university of california cooperative extension – september...

University of California Cooperative Extension – September, 2010 (S.D. Wright, et al) 1

COTTON HARVEST AID Acala and Pima

Preliminary Research Progress Report 2009

Cotton Inc. and Cotton Alliance

Advisors and Specialists – University of

California Cooperative Extension:

Steve Wright, UCCE Farm Advisor, Tulare and

Kings Co.

Bob Hutmacher, Cotton Specialist, UC Davis

Plant Sciences Dept., West Side REC

Dan Munk, UCCE Farm Advisor, Fresno Co.

Staff Research Associates:

Lalo Banuelos, UCCE Tulare/Kings County

Mark Keeley, UC Davis Plant Science Dept.

Jon Wroble, UCCE Fresno County

Laboratory Assistants

Sara Avila, Tulare/Kings County

Agricultural Technicians:

Matt Mills, Tulare County

Craig Yancy, Tulare County

Tony Garcia, Kings County

UC West Side Research and

Extension Center:

Ed Scott

Merf Solorio


2009 Cotton Harvest Aid Research Summary

This report summarizes the applied defoliation research studies conducted during 2009. All projects were

conducted at the West Side Research and Extension Center. Five studies were conducted on Acala cotton.

Although it is one of the last management decisions in the cotton production cycle, defoliation timing and

application are critical to producing a profitable crop. Improper timing will compromise both seed cotton yield and

quality. In light of the premium and discounts for fiber quality brought about by High Volume Instrumentation (HVI),

proper choice and timing of harvest aid chemicals are of paramount importance. Ideally, the proper harvest aid materials

should defoliate the entire plant within 14 days after application with minimal desiccation. However, plant maturity,

moisture status, nitrogen status, and environmental conditions dictate this response.

The objective of these studies was to define the most appropriate conditions for ideal defoliation and crop

termination. In addition, it is necessary to evaluate alternative, as well as new materials, to current defoliation programs

in a manner to insure optimum performance and minimum impact on fiber quality.

ACKNOWLEDGMENTS

We gratefully acknowledge the assistance and support provided by the West Side Research and Extension Center

in supplying land, labor, and equipment to conduct these studies.

Support to conduct these studies was provided by Cotton Incorporated

Arysta LifeScience Bayer Crop Science

FBScience FMC

Syngenta Nichino America

HARVEST AIDS TESTED IN THESE STUDIES

Brand Name Common Chemical Name/Formulation Company

Adios 1.5 EC Thiduazuron & Diuron Arysta LifeScience

Agridex Crop Oil Concentrate Helena

CottonQuik 2.25 lb/G Ethephon Dupont

Def 6 6 lb/G Tribufos Bayer

Defol 7 6 lb/G Sodium Chlorate Monterey

ET Herbicide/Defoliant 0.2 EC Pyraflufen-ethyl Nichino

Finish 6 6.75 lb/G Ethephon & Cyclanilide Bayer

Ginstar 1.5 EC Thiduazuron & Diuron Bayer

Gramoxone Inteon Paraquat Syngenta

Induce Nonionic Surfactants Helena

Kafe FBScience

Prep 6 lb/G Ethephon Bayer

Shark Carfentrazone-ethyl FMC


Cotton Harvest Aid Management 2009 Trial 1 - In previous years Ginstar treatments at 4-6oz rate applied at the 4 nodes above cracked boll followed by a

secondary treatment of 6-8 oz of Ginstar gave 20 percent higher defoliation, no difference in desiccation, and 10 percent

improved open boll compared to similar treatments with a two shot approach applied at the standard 6 NACB stage. In

2009, 4 NACB treatments had improved defoliation, open boll, and desiccation, with slight significant differences in the

yield. Though 6 NACB has potential for late fields to bring about an earlier harvest, 4 NACB produced a more desirable

outcome.

Trial 2 – In the 2-Step Approach in Acala cotton, application timings made significant differences in defoliation,

desiccation, and open boll. Applying treatments at 15% OB followed by 70% OB produced less desirable results

compared to treatments applied at 15% OB followed by 50% OB followed by 70% OB and 50% OB followed by 70% OB

which gave two times better results.

Trial 3 – Similiarities and differences were observed when comparing Ginstar + Finish herbicides versus Adios + Prep

herbicides in Acala cotton. Treatments consisting of Ginstar + Finish produced higher percents compared to Adios + Prep

treatments, 21 DAT in defoliation and desiccation. Both herbicide mixtures gave similar percentages in open boll.

Trial 4 – The defoliation screening study in Acala cotton showed which herbicides applied at certain rates produced the

best results. In defoliation, ET 2 floz + Ginstar 6 floz +CottonQuik 3 pts + Agridex 1 pt followed by ET 2.75 floz +

Gramaxone Inteon 16 floz + Induce 1 pt gave the best 21 DAT. In desiccation, Shark 0.5 floz + Ginstar 6 floz +

CottonQuik 3 pts + Agridex 1 pt followed by Shark 1 floz + Gramaxone Inteon 18 floz + Induce 1 pt gave best results 21

DAT. And in open boll, Ginstar 6 oz + Prep 2 pt + Agridex 1 pt followed by Defol 7 1.6 qts + Gramaxone Inteon 16 floz

+ Induce 1 pt produced highest results 21 DAT. Overall treatment 12 performed extremely well in defoliation,

desiccation, and open boll.

Trial 5 – The defoliation study was conducted to observe the differences between the combinations of Kafe with Adios +

Prep and Kafe with Ginstar + Finish. Identical results were produced 8, 14, and 21 DAT with the two treatments in

defoliation, desiccation, and open boll when applied at the same timings. No differences were observed.

Defoliation Studies in Acala Cotton (photos 2009)


Acala Defoliation (Pre-Treatment Approach) UCCE--WSREC—2009

Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk,

Jon Wrobles, Mark Keeley, Matt Mills, Craig Yancy, Tony Garcia,

Sara Jo Avila, Ed Scott, Merf Solorio, WSREC Staff

The trial was conducted at the Westside Research Center in Five Points. This field was planted with Roundup

Ready Flex Phytogen 725RF on April 20, 2009 with seed rate of 18 lbs/A. The field was irrigated three times using

pressure bomb readings of 18-20 bars to better manage plant vigor. In addition, the field received 16 ounces of Pix Ultra

on July 2, 15 ounces of Pix Ultra on July 22. The plot size was 4-40” rows x 65’, 4 replications, with a volume of 15 gpa,

pressure of 40 psi, speed of 3.5 mph and 8002 flat fan nozzles.

The first application was applied on September 10, 2009, using a High Clearance Spider sprayer when the cotton

was at 6 nodes above cracked boll (NACB), with temperature of 87oF and wind factor of 0-1 mph. The second

application was applied on September 15, 2009, using a High Clearance Spider when the cotton was at 4NACB, with

temperature of 81oF and wind factor of 2-4 mph. The third application was applied on September 22, 2009, using a High

Clearance Spider, with temperature of 84oF and wind factor of 0-1 mph. The last application was applied on September

24, 2009, using a High Clearance Spider with temperature of 94°F with wind factor of 0-2 mph. Defoliation, desiccation,

and open boll percentages were visually recorded at 7, 14, and 21 days after treatment (DAT).

At 7 DAT, all treatments displayed various defoliation percentages, averaging approximately 30 percent.

Treatment 1 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) exhibited the lowest

average defoliation percent, 11 percent, and treatment 8 (Ginstar 4 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6

oz + Finish 20 oz + Agridex 1 pt) exhibited the highest, 50 percent (Table 1). Desiccation averaged approximately 10

percent. Treatment 1 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) exhibited the

lowest, 3 percent, and treatment 8 (Ginstar 4 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz +

Agridex 1 pt) exhibited the highest, 18 percent (Table 2). Open boll averaged approximately 65 percent and treatment 8

(Ginstar 4 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) showed the highest

with 76 percent (Table 3).

At 14 DAT, all treatments showed a range of defoliation percentages, with treatment 9 (Ginstar 6 oz + Finish 12

oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) being the highest, 69 percent, and treatment 1

(Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) being the lowest at 21 percent (Table

1). Desiccation was still fairly low for most treatments, but treatment 9 (Ginstar 6 oz + Finish 12 oz + Agridex 1 pt

followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) had the highest rating, 48 percent and treatments 1 (Ginstar 4 oz

+ Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) and 2 (Ginstar 6 oz + Agridex 1 pt followed by

Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) showing the lowest, 10 percent (Table 2). Open boll ratings were in the mid

70 to mid 80 percent range for most treatments with treatments 6 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz +

Finish 20 oz + Agridex 1 pt) and 9 (Ginstar 6 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz +

Agridex 1 pt) at the highest, 84 percent, and treatments 1 (Ginstar 4 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish

20 oz + Agridex 1 pt) and 5 (Ginstar 6 oz + Agridex 1 pt followed by Ginstar 8 oz + Finish 20 oz + Agridex 1 pt) at the

lowest, 75 percent (Table 3).

At 21 DAT, treatment 9 (Ginstar 6 oz + Finish 12 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz +

Agridex 1 pt) had the highest defoliation ratings at 95 percent, and treatment 1 (Ginstar 4 oz + Agridex 1 pt followed by

Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) having the lowest ratings at 73 percent (Table 1). Treatment 10 (Ginstar 6 oz

+ Agridex 1 pt followed by Ginstar 8 oz + Finish 20 oz + Agridex 1 pt) also had the highest desiccation at 85 percent, and

treatment 7 (Ginstar 6 oz + Agridex 1 pt followed by Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) having the lowest rating

at 35 percent (Table 2). Open boll ratings, with treatment 7 (Ginstar 6 oz + Agridex 1 pt followed by Ginstar 6 oz +

Finish 20 oz + Agridex 1 pt) showing the highest at 95 percent and treatment 2 (Ginstar 6 oz + Agridex 1 pt followed by

Ginstar 6 oz + Finish 20 oz + Agridex 1 pt) having the lowest at 87 percent (Table 3).


Table 1.

Percent Defoliation

Treatments

Rate pr/A

Timing Sept. 24 Sept. 29 Oct. 6

9 DAT 14 DAT 21 DAT

1. Ginstar + Agridex

B. Ginstar + Finish + Agridex

4oz + 1pt

6oz + 20oz + 1pt

6NACB 11 21 73



6oz + 1pt

6oz + 20oz + 1pt

6NACB 15 31 76

3. Ginstar + Finish + Agridex


4oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 43 61 84



6oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 43 68 81



6oz + 1pt

8oz + 20oz + 1pt

6NACB 15 48 76

9 DAT 14 DAT 21 DAT



4oz + 1pt

6oz + 20oz + 1pt

4NACB 24 66 90



6oz + 1pt

6oz + 20oz + 1pt

4NACB 28 60 86



4oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 50 66 91



6oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 46 69 95



6oz + 1pt

8oz + 20oz + 1pt

4NACB 25 54 90

11. Untreated --- --- 10 23 31

Table 2.

Percent Desiccation

Treatments

Rate pr/A

Timing

Sept. 24 Sept. 24 Oct. 1

9 DAT 14 DAT 21 DAT



4oz + 1pt

6oz + 20oz + 1pt

6NACB 3 10 53



6oz + 1pt

6oz + 20oz + 1pt

6NACB 7 10 53



4oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 9 19 59



6oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 11 16 60



6oz + 1pt

8oz + 20oz + 1pt

6NACB 5 13 53

9 DAT 14 DAT 21 DAT



4oz + 1pt

6oz + 20oz + 1pt

4NACB 10 40 69



6oz + 1pt

6oz + 20oz + 1pt

4NACB 14 33 35



4oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 16 36 63



6oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 18 48 63



6oz + 1pt

8oz + 20oz + 1pt

4NACB 10 33 85

11. Untreated --- --- 5 8 10


Table 3.

Percent Open Boll

Treatments

Rate pr/A

Timing


9 DAT 14 DAT 21 DAT



4oz + 1pt

6oz + 20oz + 1pt

6NACB 54 75 88



6oz + 1pt

6oz + 20oz + 1pt

6NACB 53 78 87



4oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 60 78 90



6oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 59 76 90



6oz + 1pt

8oz + 20oz + 1pt

6NACB 54 75 88

9 DAT 14 DAT 21 DAT



4oz + 1pt

6oz + 20oz + 1pt

4NACB 74 84 93



6oz + 1pt

6oz + 20oz + 1pt

4NACB 74 81 95



4oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 76 83 93



6oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 75 84 94



6oz + 1pt

8oz + 20oz + 1pt

4NACB 73 80 89

11. Untreated --- --- 71 78 89

Table 4.

Treatment Rate pr/A

Timing Lint %

Gin

T.O. %

Lint Yield

Lbs/A



4oz + 1pt

6oz + 20oz + 1pt

6NACB 36.9 32.7 1776



6oz + 1pt

6oz + 20oz + 1pt

6NACB 37.0 32.8 1813



4oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 36.8 32.9 1807



6oz + 12oz + 1pt

6oz + 20oz + 1pt

6NACB 36.9 33.0 1756



6oz + 1pt

8oz + 20oz + 1pt

6NACB 36.6 32.6 1764



4oz + 1pt

6oz + 20oz + 1pt

4NACB 36.9 32.8 1848



6oz + 1pt

6oz + 20oz + 1pt

4NACB 37.1 33.3 1834



4oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 37.0 32.8 1858



6oz + 12oz + 1pt

6oz + 20oz + 1pt

4NACB 36.8 32.6 1803



6oz + 1pt

8oz + 20oz + 1pt

4NACB 37.0 32.5 1798

11. Untreated --- --- 34.4 28.9 1665


Acala Defoliation - Shark (2 Step-Approach) UCCE--WSREC—2009








pressure of 30 psi at first application, pressure of 40 psi at second and third application, speed of 3.6 mph, 8003 flat fan

nozzles at first application, and 8002 flat fan nozzles at second and third applications.

The first application was applied on September 4, 2009, using a John Deere 6100 with temperatures of 82oF and a

wind factor of 2-5 mph. The second application was disbursed on September 15, 2009, using a High Cycle Spider with an

exterior temperature of 71oF and a wind factor of 2-4 mph. The third and last application was applied on September 22,

2009, using a High Cycle Spider with temperature of 75°F with wind factor of 0-3 mph. Defoliation, desiccation, and

open boll percentages were visually recorded at 13, 18, and 27 days after treatment (DAT).

At 13 DAT, all treatments displayed average defoliation percentages, averaging approximately 2 percent.

Treatment 4 (Finish 12oz + Agridex 1 pt followed by Ginstar 6oz + Finish 12oz + Agridex 1 pt) exhibited the lowest

average defoliation percent, 0 percent, and treatments 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish

20oz + Agridex 1 pt), 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt followed by Ginstar 6oz +

Finish 20oz + 1pt), and 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt followed by

Ginstar 6oz + Finish 20oz + Agridex 1pt) showed highest average defoliation percent, 2 percent. Desiccation averaged

approximately 4 percent. Treatment 4 (Finish 12oz + Agridex 1 pt followed by Ginstar 6oz + Finish 12oz + Agridex 1 pt)

exhibited the lowest at 0 percent, and treatment 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt

followed by Ginstar 6oz + Finish 20oz + 1pt) the highest, 6 percent (Table 2). Open boll averaged 52 percent. Treatment

2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt followed by Ginstar 6oz + Finish 20oz + 1pt)

showing the highest with 54 percent (Table 3).


Treatments 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish 20oz + Agridex 1 pt) and 4 (Finish 12oz +

Agridex 1 pt followed by Ginstar 6oz + Finish 12oz + Agridex 1 pt) exhibited the lowest average defoliation percents, 19

percent, and treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt followed by

Ginstar 6oz + Finish 20oz + Agridex 1pt) the highest, 33 percent (Table 1). Desiccation averaged approximately 28

percent. Treatment 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish 20oz + Agridex 1 pt) exhibited the

lowest, 13 percent, and treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt

followed by Ginstar 6oz + Finish 20oz + Agridex 1pt) the highest, 39 percent (Table 2). Open boll averaged

approximately 73 percent. Treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz + Finish 12oz + Agridex 1pt

followed by Ginstar 6oz + Finish 20oz + Agridex 1pt) showing the highest with 78 percent (Table 3).


Treatment 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz + Finish 20oz + Agridex 1 pt) exhibited the lowest

average defoliation percent, 49 percent, and treatment 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex

1pt followed by Ginstar 6oz + Finish 20oz + 1pt) and treatment 3 (Shark 1floz + Agridex 1pt followed by Ginstar 6 oz +

Finish 12oz + Agridex 1pt followed by Ginstar 6oz + Finish 20oz + Agridex 1pt) the highest, 83 percent (Table 1).

Desiccation averaged approximately 49 percent. Treatment 1 (Shark 1floz + Agridex 1 pt followed by Ginstar 6oz +

Finish 20oz + Agridex 1 pt) exhibited the lowest, 29 percent, and treatment 2 (Shark 1floz + Agridex 1pt followed by

Ginstar 6oz + Agridex 1pt followed by Ginstar 6oz + Finish 20oz + 1pt) the highest, 64 percent (Table 2). Open boll

averaged approximately 89 percent and treatment 2 (Shark 1floz + Agridex 1pt followed by Ginstar 6oz + Agridex 1pt

followed by Ginstar 6oz + Finish 20oz + 1pt) showing the highest with 91 percent (Table 3).


Table 1.

Percent Defoliation

Treatment Rate /A Timing


13 DAT 18 DAT 27 DAT

1. Shark + Agridex


1floz +1pt

6oz + 20oz + 1pt

8 NACB

4 NACB

15% OB

70% OB 2 19 49

2. Shark + Agridex

B. Ginstar + Agridex

C. Ginstar + Finish + Agridex

1floz + 1pt

6oz + 1pt

6oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

2 30 83

3. Shark + Agridex



1 floz + 1pt

6oz + 12 oz + 1pt

6 oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

2 33 83

4. Finish + Agridex


12oz + 1pt

6oz + 12oz + 1pt

6 NACB

4 NACB

50% OB

70% OB 0 19 76

5. Untreated --- --- 0 15 20

Table 2.

Percent Dessication




1. Shark + Agridex


1floz +1pt

6oz + 20oz + 1pt

8 NACB

4 NACB

15% OB

70% OB 5 13 29

2. Shark + Agridex



1floz + 1pt

6oz + 1pt

6oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

6 38 64

3. Shark + Agridex



1 floz + 1pt

6oz + 12 oz + 1pt

6 oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

5 39 56

4. Finish + Agridex


12oz + 1pt

6oz + 12oz + 1pt

6 NACB

4 NACB

50% OB

70% OB 0 23 46

5. Untreated --- --- 0 2 9

Table 3.

Open Boll




1. Shark + Agridex


1floz +1pt

6oz + 20oz + 1pt

8 NACB

4 NACB

15% OB

70% OB 53 61 83

2. Shark + Agridex



1floz + 1pt

6oz + 1pt

6oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

54 75 91

3. Shark + Agridex



1 floz + 1pt

6oz + 12 oz + 1pt

6 oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

53 78 90

4. Finish + Agridex


12oz + 1pt

6oz + 12oz + 1pt

6 NACB

4 NACB

50% OB

70% OB 48 76 90

5. Untreated --- --- 48 59 76


Table 4.

Treatment Rate /A Timing Lint %

Gin

T.O. %

Lint

Yield

1. Shark + Agridex


1floz +1pt

6oz + 20oz + 1pt

8 NACB

4 NACB

15% OB

70% OB 37.1 32.6 1922

2. Shark + Agridex



1floz + 1pt

6oz + 1pt

6oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

37.5 33.4 1898

3. Shark + Agridex



1 floz + 1pt

6oz + 12 oz + 1pt

6 oz + 20oz + 1 pt

8 NACB

6 NACB

4 NACB

15% OB

50% OB

70% OB

37.1 32.9 1880

4. Finish + Agridex


12oz + 1pt

6oz + 12oz + 1pt

6 NACB

4 NACB

50% OB

70% OB 37.2 32.7 1927

5. Untreated --- --- 34.8 29.6 1833


Acala Defoliation 3 – Ginstar vs Adios UCCE--WSREC—2009








pressure of 40 psi, speed of 4 mph and 8002 flat fan nozzles.

The first application was applied on September 15, using a High Clearance Spider with temperature of 73oF and

wind factor of 3-5 mph. The last application was applied on September 24, 2009, using a High Clearance Spider with

temperature of 89°F with wind factor of 0-2 mph. Defoliation, desiccation, and open boll percentages were visually

recorded at 7, 14, and 21days after treatment (DAT).


Treatment 12 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + ET 2.75oz + Agridex 1pt) exhibited the

lowest average defoliation percent, 18 percent, and treatments 3 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by

ET 2.75oz + Agridex 1 pt) and 5 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + ET 2.75oz +

Agridex 1pt) the highest, 38 percent (Table 1). Desiccation averaged approximately 23 percent. Treatment 10 (Adios 6oz

+ Prep 2pt + Agridex 1pt followed by ET 2.75oz + Agridex 1pt) exhibited the lowest, 12 percent, and treatments 3

(Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by ET 2.75oz + Agridex 1 pt) and 4 (Ginstar 6oz + Finish 20oz +

Agridex 1 pt followed by Shark 1.6oz + Agridex 1 pt) the highest, 37 percent (Table 2). Open boll averaged

approximately 89 percent and treatment 1 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt +

Gramoxone Inteon 16oz + Induce 1pt) showing the highest with 93 percent (Table 3).


Treatment 13 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) exhibited the

lowest average defoliation percent, 38 percent, and treatments 2 (Ginstar 6 oz + Finish 20 oz + Agridex 1 pt followed by

Gramoxone Inteon 16oz + Agridex 1pt), 3 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by ET 2.75oz + Agridex 1

pt), 5 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + ET 2.75oz + Agridex 1pt), and 6 (Ginstar

6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) the highest, 68 percent (Table

1). Desiccation averaged approximately 36 percent. Treatment 13 (Adios 6oz + Prep 2pt + Agridex 1pt followed by

Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) exhibited the lowest, 17 percent, and treatment 6 (Ginstar 6oz + Finish 20 oz

+ Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) the highest, 55 percent (Table 2). Open boll

averaged approximately 94 percent with treatments 1 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt

+ Gramoxone Inteon 16oz + Induce 1pt) showing the highest with 98 percent (Table 3).


Treatment 13 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Shark 1.6oz + Agridex 1pt) exhibited the

lowest average defoliation percent, 60 percent, and treatment 4 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by

Shark 1.6oz + Agridex 1 pt) and treatment 6 (Ginstar 6oz + Finish 20 oz + Agridex 1pt followed by Defol 7 1.6qt + Shark

1.6oz + Agridex 1pt) having the highest, 92 percent (Table 1). Desiccation averaged approximately 27 percent.

Treatment 11 (Adios 6oz + Prep 2pt + Agridex 1pt followed by Shark 1.6oz + Agridex 1pt) exhibited the lowest, 10

percent, and treatment 7 (Ginstar 6oz + Finish 20oz + Agridex 1pt followed by Ginstar 8 oz + Agridex 1pt) the highest, 62

percent (Table 2). Open boll averaged approximately 96 percent with treatments 1 (Ginstar 6oz + Finish 20 oz + Agridex

1pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1pt), 2 (Ginstar 6 oz + Finish 20 oz + Agridex 1 pt

followed by Gramoxone Inteon 16oz + Agridex 1pt), 3 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by ET 2.75oz

+ Agridex 1 pt), and 4 (Ginstar 6oz + Finish 20oz + Agridex 1 pt followed by Shark 1.6oz + Agridex 1 pt) showing the

highest with 98 percent (Table 3).


Table 1.

Percent Defoliation

Treatments Rate/A


7 DAT 14 DAT 21 DAT


B. Defol 7 + Gramoxone Inteon + Induce

6oz + 20oz + 1pt

1.6qt + 16 oz + 1pt 32 55 82


B. Gramoxone Inteon + Induce

6oz + 20oz + 1pt

16oz + 1.6pt 32 68 90


B. ET + Agridex

6oz + 20oz + 1pt

2.75oz + 1pt 38 68 88


B. Shark + Agridex

6oz + 20oz + 1pt

1.6oz + 1pt 32 62 92


B. Defol 7 + ET + Agridex

6oz + 20oz + 1pt

1.6qt + 2.75oz + 1pt 38 68 88


B. Defol 7 + Shark + Agridex

6oz + 20oz + 1pt

1.6qt + 1.6oz + 1pt 30 68 92



6oz + 20oz + 1pt

8oz + 1pt 32 65 90

8. Adios + Prep + Agridex


6oz + 2pt + 1pt

1.6qt + 16oz + 1.6pt 22 53 67



6oz + 2pt + 1pt

16oz + 1.6pt 20 48 68


B. ET + Agridex

6oz + 2pt + 1pt

2.75floz + 1pt 25 50 70


B. Shark + Agridex

6oz + 2pt + 1pt

1.6oz + 1pt 22 45 68



6oz + 2pt + 1pt

1.6qt + 2.75oz + 1pt 18 42 83



6oz + 2pt + 1pt

1.6qt + 1.6oz + 1pt 22 38 60


B. Adios + Agridex

6oz + 2pt + 1pt

8oz + 1pt 27 53 78

15. Untreated ----- 15 23 45


Table 2.

Percent Desiccation

Treatments Rate/A


7 DAT 14 DAT 21 DAT



6oz + 20oz + 1pt

1.6qt + 16 oz + 1pt 33 43 32



6oz + 20oz + 1pt

16oz + 1.6pt 28 52 38


B. ET + Agridex

6oz + 20oz + 1pt

2.75oz + 1pt 37 47 35


B. Shark + Agridex

6oz + 20oz + 1pt

1.6oz + 1pt 37 50 22



6oz + 20oz + 1pt

1.6qt + 2.75oz + 1pt 30 50 52



6oz + 20oz + 1pt

1.6qt + 1.6oz + 1pt 23 55 20



6oz + 20oz + 1pt

8oz + 1pt 32 47 62



6oz + 2pt + 1pt

1.6qt + 16oz + 1.6pt 13 22 12



6oz + 2pt + 1pt

16oz + 1.6pt 18 25 20


B. ET + Agridex

6oz + 2pt + 1pt

2.75floz + 1pt 12 30 17


B. Shark + Agridex

6oz + 2pt + 1pt

1.6oz + 1pt 13 20 10



6oz + 2pt + 1pt

1.6qt + 2.75oz + 1pt 17 25 18



6oz + 2pt + 1pt

1.6qt + 1.6oz + 1pt 13 17 13


B. Adios + Agridex

6oz + 2pt + 1pt

8oz + 1pt 17 20 18

15. Untreated ----- 3 5 8


Table 3.

Percent Open Boll

Treatments Rate/A


7 DAT 14 DAT 21 DAT



6oz + 20oz + 1pt

1.6qt + 16 oz + 1pt 93 98 98



6oz + 20oz + 1pt

16oz + 1.6pt 92 97 98


B. ET + Agridex

6oz + 20oz + 1pt

2.75oz + 1pt 92 97 98


B. Shark + Agridex

6oz + 20oz + 1pt

1.6oz + 1pt 92 96 98



6oz + 20oz + 1pt

1.6qt + 2.75oz + 1pt 90 95 96



6oz + 20oz + 1pt

1.6qt + 1.6oz + 1pt 88 97 97



6oz + 20oz + 1pt

8oz + 1pt 90 95 96



6oz + 2pt + 1pt

1.6qt + 16oz + 1.6pt 87 92 94



6oz + 2pt + 1pt

16oz + 1.6pt 85 92 92


B. ET + Agridex

6oz + 2pt + 1pt

2.75floz + 1pt 85 93 95


B. Shark + Agridex

6oz + 2pt + 1pt

1.6oz + 1pt 85 92 93



6oz + 2pt + 1pt

1.6qt + 2.75oz + 1pt 88 95 95



6oz + 2pt + 1pt

1.6qt + 1.6oz + 1pt 87 92 95


B. Adios + Agridex

6oz + 2pt + 1pt

8oz + 1pt 85 92 96

15. Untreated ----- 83 88 94


Defoliation Screening Study in Acala Cotton - 4 UCCE - WSREC - 2009








pressure of 40 psi, speed of 4 mph and 8002 flat fan nozzles.

The first application was applied on September 15, 2009, using a High Clearance Spider when the cotton was at

60% open boll, with temperature of 84oF and wind factor of 2-4 mph. The second application was applied on September

24, 2009, using a High Clearance Spider when the cotton was at 80% open boll, with temperature of 89°F with wind

factor of 0-2 mph. Defoliation, desiccation, and open boll percentages were visually recorded at 7, 14, and 21 days after

treatment (DAT).

At 7 DAT, all treatments which were sprayed at 60% OB displayed average defoliation percentages of 43 percent

(Table 1). On the treatment 9 (Shark 2.75floz + Ginstar 8oz + Agridex 1pt) showed percentages of 55 at 7 DAT.

Desiccation averaged approximately 37 percent on all treatments sprayed at 60% OB (Table 2). On treatment 11 (Def 2pt

+ CottonQuik 3pt + Agridex 1pt) the percentages showed 55. Open boll averaged approximately 81 percent on all

treatments at 60% OB. On treatment 8 (Shark 0.5 + Ginstar 6 floz + CottonQuik 3pt + Agridex 1pt) it showed a 85

percent open boll (Table 3).

At 14 DAT, all treatments sprayed with one application at 60 % OB and a second application at 80% OB

displayed average defoliation percentages, averaging approximately 62 percent (Table 1). Treatment 3 (Ginstar 6floz +

CottonQuik 3pt + Agridex 1pt followed by Gramoxone Inteon 16floz + Defol 7 1.6qt + Induce 1pt) and treatment 6 (Prep

2pt + Def 2pt + Gramoxone Inteon 8oz + Induce 1.6pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1.6

pt) exhibited the lowest average defoliation percent, 53 percent, and treatment 4 (ET 2.75floz + Ginstar 8oz + Agridex 1pt

followed by ET 2.75floz + Gramoxone Inteon 16floz + Induce 1.6pt) exhibited the highest, 68 percent. Desiccation

averaged approximately 49 percent. Treatment 6 (Prep 2pt + Def 2pt + Gramoxone Inteon 8oz + Induce 1.6pt followed

by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1.6 pt) exhibited the lowest, 32 percent, and treatment 4 (ET 2.75floz

+ Ginstar 8oz + Agridex 1pt followed by ET 2.75floz + Gramoxone Inteon 16floz + Induce 1.6pt) the highest, 62 percent

(Table 2). Open boll averaged approximately 87 percent on all treatments and treatment 13 (Ginstar 6oz + Prep 2pt +

Agridex 1pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1pt) showing the highest with 91 percent

(Table 3).

At 21 DAT, treatment 6 (Prep 2pt + Def 2pt + Gramoxone Inteon 8oz + Induce 1.6pt followed by Defol 7 1.6qt +

Gramoxone Inteon 16oz + Induce 1.6 pt) exhibited the lowest average defoliation percent, 72 percent, and treatment 2 (

ET 2floz + Ginstar 6floz + CottonQuik 3pt + Agridex 1pt followed by ET 2.75floz + Gramoxone Inteon 16floz + Induce

1pt)the highest, 95 percent (Table 1). Desiccation averaged approximately 35 percent. Treatment 6 (Prep 2pt + Def 2pt +

Gramoxone Inteon 8oz + Induce 1.6pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz + Induce 1.6 pt) and treatment

10 ( Def 2pt + Prep 2pt + Agridex 1pt followed by Defol 71.6qt + Gramoxone Inteon 16oz + Induce 1pt) exhibited the

lowest, 15 percent, and treatment 8 ( Shark 0.5floz + Ginstar 6floz + CottonQuik 3pt + Agridex 1pt followed by Shark

1floz + Gramoxone Inteon 18floz + Induce 1pt) the highest, 53 percent (Table 2). Open boll averaged approximately 89

percent and treatment 13 (Ginstar 6oz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Gramoxone Inteon 16oz +

Induce 1pt) showed the highest with 93 percent (Table 3).


Table 1.

Percent Defoliation

Treatments Rate/A


7 DAT 14 DAT 21 DAT

1. ET + Prep + Agridex

B. ET + Agridex

2floz + 2pt + 1pt

2floz + 1pt 45 60 80

2. ET + Ginstar + CottonQuik + Agridex

B. ET + Gramoxone Inteon + Induce

2floz + 6floz + 3pt + 1pt

2.75floz + 16floz + 1pt 42 63 95

3. Ginstar + CottonQuik + Agridex

B. Gramoxone + Defol 7 + Induce

6floz + 3pt + 1pt

16fl + 1.6qt + 1pt 37 53 85

4. ET + Ginstar + Agridex


2.75floz + 8oz + 1pt

2.75floz + 16floz + 1pt 42 68 90

5. Ginstar + Gramoxone Inteon + Induce


8floz + 5floz + 1.6pt

1.6qt + 16oz + 1.6pt 50 65 90

6. Prep + Def + Gramoxone Inteon + Induce


2pt + 2pt + 8oz + 1.6pt

1.6qt + 16oz + 1.6pt 40 53 72

7. Shark + Prep + Agridex

B. Shark + Agridex

0.5floz + 2pt + 1pt

1floz + 1pt 47 60 88

8. Shark + Ginstar + CottonQuik + Agridex

B. Shark + Gramoxone Inteon + Induce

0.5floz + 2pt + 1pt

1floz + 1pt 43 62 87

9. Shark + Ginstar + Agridex



2.75floz + 16oz + 1.6pt 55 62 93

10. Def + Prep + Agridex


2pt + 2pt + 1pt

1.6qts + 16floz + 1pt 53 65 88

11. Def + CottonQuik + Agridex

B. Def + Gramoxone Inteon + Induce

2pt + 3pt + 1pt

1.6oz + 16oz + 1pt 45 63 90

12. Ginstar + Def + Agridex


6oz + 2pt + 1pt

1.6qt + 16oz + 1pt 47 67 93

13. Ginstar + Prep + Agridex


6oz + 2pt + 1pt

1.6qt + 16oz + 1pt 40 67 90

14. Untreated ----- 18 30 45

* 1st application sprayed on 15-Sept.

* 2nd application sprayed on 24-Sept.


Table 2.

Percent Dessication

Treatments Rate/A


7 DAT 14 DAT 21 DAT


B. ET + Agridex

2floz + 2pt + 1pt

2floz + 1pt 27 38 25




2.75floz + 16floz + 1pt 53 55 45



6floz + 3pt + 1pt

16fl + 1.6qt + 1pt 37 43 38




2.75floz + 16floz + 1pt 33 62 30




1.6qt + 16oz + 1.6pt 33 48 40



2pt + 2pt + 8oz + 1.6pt

1.6qt + 16oz + 1.6pt 22 32 15


B. Shark + Agridex

0.5floz + 2pt + 1pt

1floz + 1pt 40 45 27



0.5floz + 2pt + 1pt

1floz + 1pt 35 52 53




2.75floz + 16oz + 1.6pt 47 60 50



2pt + 2pt + 1pt

1.6qts + 16floz + 1pt 23 45 15



2pt + 3pt + 1pt

1.6oz + 16oz + 1pt 55 53 28



6oz + 2pt + 1pt

1.6qt + 16oz + 1pt 43 55 47



6oz + 2pt + 1pt

1.6qt + 16oz + 1pt 43 53 42

14. Untreated ----- 0 20 13




Table 3.

Percent Open Boll

Treatments Rate/A


7 DAT 14 DAT 21 DAT


B. ET + Agridex

2floz + 2pt + 1pt

2floz + 1pt 80 87 88




2.75floz + 16floz + 1pt 80 87 90



6floz + 3pt + 1pt

16fl + 1.6qt + 1pt 80 87 90




2.75floz + 16floz + 1pt 80 85 87




1.6qt + 16oz + 1.6pt 82 87 88



2pt + 2pt + 8oz + 1.6pt

1.6qt + 16oz + 1.6pt 80 83 86


B. Shark + Agridex

0.5floz + 2pt + 1pt

1floz + 1pt 82 88 90



0.5floz + 2pt + 1pt

1floz + 1pt 85 87 88




2.75floz + 16oz + 1.6pt 80 83 85



2pt + 2pt + 1pt

1.6qts + 16floz + 1pt 83 87 91



2pt + 3pt + 1pt

1.6oz + 16oz + 1pt 83 88 88



6oz + 2pt + 1pt

1.6qt + 16oz + 1pt 82 90 92



6oz + 2pt + 1pt

1.6qt + 16oz + 1pt 83 91 93

14. Untreated ----- 75 82 83




Defoliation Study with Kafe in Acala Cotton - 5 UCCE - WSREC - 2009








pressure of 40 psi, speed of 3.5 mph and 8002 flat fan nozzles.

The first application was applied on September 28, 2009, using a High Cycle Spider when the cotton was at 60%

open boll, with temperature of 89oF and wind factor of 2-4 mph. The last application was applied on October 8, 2009,

using a High Cycle Spider with temperature of 49°F with wind factor of 4 mph. Defoliation, desiccation, and open boll

percentages were visually recorded at 8, 14, and 21days after treatment (DAT).

At 8 DAT, both treatments displayed average defoliation percentages, averaging approximately 37 percent.

Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt) exhibited the lower average defoliation percent, 36

percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt) the higher, 38 percent (Table 1).

Desiccation averaged approximately 14 percent. Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt)

exhibited the lower average dessication percent, 13 percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz +

Agridex 1 pt) the higher, 15 percent (Table 2). Open boll averaged approximately 84 percent with both treatments

producing 84 percent (Table 3).


Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt +

Induce 1 pt) exhibited the lower average defoliation percent, 48 percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz +

Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) the higher, 54 percent

(Table 1). Desiccation averaged approximately 26 percent. Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex

1pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) exhibited the lower average dessication percent, 23

percent, and treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt +

Gramoxone Inteon 1pt + Induce 1 pt) the higher, 30 percent (Table 2). Open boll averaged approximately 90 percent with

treatment 1 (Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon

1pt + Induce 1 pt) producing the highest at 90 percent (Table 3).

At 21 DAT, all treatments displayed the same defoliation percentages at 73 percent (Table 1). Desiccation

averaged approximately 17 percent. Treatment 2 (Kafe 7floz + Adios 6floz + Prep 2pt + Agridex 1pt followed by Defol 7

1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) exhibited the lower average dessication percent, 14 percent, and treatment 1

(Kafe 7floz + Ginsatr 6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1

pt) the higher, 20 percent (Table 2). Open boll averaged approximately 93 percent with treatment 1 (Kafe 7floz + Ginsatr

6 floz + Finish 12floz + Agridex 1 pt followed by Defol 7 1.6qt + Gramoxone Inteon 1pt + Induce 1 pt) showing the

highest with 94 percent (Table 3).


Table 1.

Percent Defoliation

Treatments Rate/A Timing

Oct. 6 Oct. 12 Oct. 19

8 DAT 14 DAT 21 DAT

1. Kafe + Ginstar + Finish + Agridex


7floz + 6floz + 12floz + 1pt

1.6qt + 1pt + 1pt

5 NACB

3 NACB

60% OB

80% OB 38 54 73

2. Kafe + Adios + Prep + Agridex



1.6qt + 1pt + 1pt 5 NACB

3 NACB

60% OB

80% OB 36 48 73


* 2nd application sprayed on 12-Oct.

Table 2.

Percent Dessication



8 DAT 14 DAT 21 DAT




1.6qt + 1pt + 1pt

5 NACB

3 NACB

60% OB

80% OB 15 30 20





3 NACB

60% OB

80% OB 13 23 14



Table 3.

Percent Open Boll



8 DAT 14 DAT 21 DAT




1.6qt + 1pt + 1pt

5 NACB

3 NACB

60% OB

80% OB 84 90 94





3 NACB

60% OB

80% OB 84 89 92




Shark (2-Step Approach) Pima 1 UCCE - WSREC – 2009

Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk, Matt Mills,

Craig Yancy, Tony Garcia, Jon Wrobles, Sara Avila

1st Application (15% Open Boll) 2nd Application (70% Open Boll)

Date Sprayed: 15-Sep Date Sprayed: 24-Sep

Sprayer Type: High Clearnace Spider Sprayer Type: High Clearnace Spider

Air Temp: 72oF Air Temp: 95

oF

Wind Speed: 2-4 MPH Wind Speed: 2-5 MPH

Volume: 15 GPA Volume: 15 GPA

Pressure: 40 PSI Pressure: 40 PSI

Sprayer Speed: 4 MPH Sprayer Speed: 4 MPH

Nozzle Types: 8002 FF Nozzle Types: 8002 FF

Plot Size: 4-40" rows x 65', 4 replications Plot Size: 4-40" rows x 65', 4 replications

Percent Defoliation

Treatments Rates/A Timing

22-Sep 29-Sep

6-

Oct

7 DAT 14 DAT

21

DAT

1. Shark + Agridex

B. Shark + Ginstar + Agridex

0.5 floz + 1 pt

1 floz + 8 oz + 1 pt

8 NACB 3 NACB

15% OB

70% OB 15 35 73

2. Shark + Agridex


0.75 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 14 38 76

3. Shark + Agridex


1 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 18 40 81


B. Ginstar + CottonQuik + Agridex

5 oz + 12 oz + 1 pt

10 oz + 3 pt + 1 pt

8 NACB 3 NACB

15% OB

70% OB 21 59 89

5. Untreated --- 13 21 40

Percent Dessication


22-Sep 29-Sep

6-

Oct

7 DAT 14 DAT

21

DAT

1. Shark + Agridex


0.5 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 18 18 69

2. Shark + Agridex


0.75 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 16 24 56

3. Shark + Agridex


1 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 26 21 79



5 oz + 12 oz + 1 pt

10 oz + 3 pt + 1 pt

8 NACB

3 NACB

15% OB

70% OB 38 45 91

5. Untreated --- 5 5 15


Percent Open Boll


22-Sep 29-Sep 6-Oct

7 DAT 14 DAT 21 DAT

1. Shark + Agridex


0.5 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 53 66 74

2. Shark + Agridex


0.75 floz + 1 pt


8 NACB 3 NACB

15% OB

70% OB 41 61 78

3. Shark + Agridex


1 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 56 66 78



5 oz + 12 oz + 1 pt

10 oz + 3 pt + 1 pt

8 NACB

3 NACB

15% OB

70% OB 58 69 81

5. Untreated --- 38 54 81

Percent Regrowth

Treatments Rates/A Timing Top Bottom

1. Shark + Agridex


0.5 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 0 1

2. Shark + Agridex


0.75 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 0 0

3. Shark + Agridex


1 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 0 0



5 oz + 12 oz + 1 pt

10 oz + 3 pt + 1 pt

8 NACB

3 NACB

15% OB

70% OB 0 1

5. Untreated --- 0 0

Treatments Rates/A Timing Lint %

Gin

T.O %

Lint

Yield

Lbs/A

1. Shark + Agridex


0.5 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 38.3 33.6 1665

2. Shark + Agridex


0.75 floz + 1 pt


8 NACB 3 NACB

15% OB

70% OB 38.2 33.7 1650

3. Shark + Agridex


1 floz + 1 pt


8 NACB

3 NACB

15% OB

70% OB 38.3 33.7 1672



5 oz + 12 oz + 1 pt

10 oz + 3 pt + 1 pt

8 NACB

3 NACB

15% OB

70% OB 38.0 33.8 1451

5. Untreated --- 37.8 33.0 1626


2009 Ginstar (2-Step Approach) Pima 2

UCCE - WSREC - 2009

Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk, Matt Mils,


1st Application (6 NACB) 2nd Application (4 NACB)

Date Sprayed: 22-Sep Date Sprayed: 24-Sep

Sprayer Type: High Clearance Sprayer Sprayer Type: High Clearnace Spider

Air Temp: 85oF Air Temp: 95oF

Wind Speed: 0-1 MPH Wind Speed: 2-5 MPH






Percent Defoliation


29-Sep 6-Oct 13-Oct

7 DAT 14 DAT 21 DAT



4 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

6-8

NACB

48 84 90



4 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 48 85 93



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt 48 81 90



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 48 83 91



6 oz + 1 pt

8 oz + 20 oz + 1 pt 39 80 89



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

3-4

NACB

48 88 88



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 55 88 88



6 oz + 1 pt

8 oz + 20 oz + 1 pt 39 81 81

9. Untreated 25 55 68


Percent Dessication


29-Sep 6-Oct 13-Oct

7 DAT 14 DAT 21 DAT



4 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

6-8

NACB

24 44 69



4 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 35 45 69



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt 28 56 73



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 33 45 68



6 oz + 1 pt

8 oz + 20 oz + 1 pt 18 60 65



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

3-4

NACB

25 56 60



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 24 53 55



6 oz + 1 pt

8 oz + 20 oz + 1 pt 14 49 55


Percent Open Boll


29-Sep 6-Oct 13-Oct

7 DAT 14 DAT 21 DAT



4 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

6-8

NACB

65 79 90



4 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 66 79 89



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt 66 80 90



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 65 80 89



6 oz + 1 pt

8 oz + 20 oz + 1 pt 61 75 86



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

3-4

NACB

61 83 88



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 64 80 88



6 oz + 1 pt

8 oz + 20 oz + 1 pt 60 79 84



Percent Regrowth

Treatments Rates/A Timing Top Bottom



4 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

6-8

NACB

0 0



4 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 0 0



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt 0 0



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 1 1



6 oz + 1 pt

8 oz + 20 oz + 1 pt 0 0



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

3-4

NACB

0 1



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 0 2



6 oz + 1 pt

8 oz + 20 oz + 1 pt 0 1

9. Untreated 0 0

Treatments Rates/A Timing Lint %

Gin

T.O %

Lint

Yield

LBS/A



4 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

6-8

NACB

38.4 34.1 1645



4 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 38.5 34.3 1584



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt 38.3 34.5 1635



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 38.3 33.9 1601



6 oz + 1 pt

8 oz + 20 oz + 1 pt 38.2 34.4 1616



6 oz + 12 oz + 1 pt

8 oz + 20 oz + 1 pt

3-4

NACB

38.6 34.4 1610



6 oz + 12 oz + 1 pt

10 oz + 20 oz + 1 pt 38.3 34.0 1633



6 oz + 1 pt

8 oz + 20 oz + 1 pt 38.7 34.6 1658

9. Untreated 38.0 33.4 1610


Defoliation Screening Pima 3

UCCE - WSREC - 2009

Steve Wright, Bob Hutmacher, Lalo Banuelos, Dan Munk, Matt Mills,


Pima 3 (60% Open Boll) 1st Application Pima 3 - Last Application

Date Sprayed: 28-Sep Date Sprayed:

Sprayer Type: High Clearance Spider Sprayer Type: High Clearance Spider

Air Temp: 89oF Air Temp:

Wind Speed: 2-4 MPH Wind Speed:






Percent Defoliation

6-Oct 12-Oct 19-Oct

Treatments Rates/A 8 DAT 14 DAT 21 DAT

1. NNH-950-4 + Prep 13.72 floz + 2 pts

65 75 77 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt

2. NNH-950-4 + Prep 20.6 floz + 2 pts


3. NNH-950-4 + Prep 27.44 floz + 2 pts


4. NAI-1289 + Agridex 1 pt + 1 pt


5. NAI-1289 +Agridex 20 floz + 1 pt


6. NAI-1289 + Agridex 24 floz + 1 pt


7. Ginstar + Finish + Agridex 6 floz + 20 floz + 1 pt


8. ET + Prep + Agridex 1 floz + 2 pts + 1 pt


9. ET + Prep + Agridex 1.5 floz + 2 pts + 1 pt




11. Adios + CottonQuik + Agridex 6 floz + 3 pts + 1 pt

52 78 82 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt

12. Adios + Prep + Agridex 13 floz + 2 pts + 1 pt


13. Def + Prep + Agridex 2 pts + 2 pts + 1 pt


14. Ginstar + Prep + Agridex 6 floz + 2 pts + 1 pt


15. Ginstar + Finish + Kafe + Agridex 6 floz + 12 floz + 7 floz + 1 pt 43 80 80


B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt

Percent Dessication

6-Oct 12-Oct 19-Oct


1. NNH-950-4 + Prep 13.72 floz + 2 pts


2. NNH-950-4 + Prep 20.6 floz + 2 pts


3. NNH-950-4 + Prep 27.44 floz + 2 pts
























15. Ginstar + Finish + Kafe + Agridex 6 floz + 12 floz + 7 floz + 1 pt



Percent Open Boll

6-Oct 12-Oct 19-Oct


1. NNH-950-4 + Prep 13.72 floz + 2 pts


2. NNH-950-4 + Prep 20.6 floz + 2 pts


3. NNH-950-4 + Prep 27.44 floz + 2 pts



























Percent Regrowth

Treatments Rates/A Top Bottom

1. NNH-950-4 + Prep 13.72 floz + 2 pts

0 1 B. ET + Gramoxone Inteon + Induce 2.75 floz + 1 pt + 1 pt

2. NNH-950-4 + Prep 20.6 floz + 2 pts


3. NNH-950-4 + Prep 27.44 floz + 2 pts

















1 1 B. Defol 7 + Gramoxone Inteon + Induce 1.6 qts + 1 pt + 1 pt









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