Evaluation of Effect of Evaluation of Effect of Combining SRI and UDP Combining SRI and UDP

Practices on Performance of Practices on Performance of Lowland Rice in KenyaLowland Rice in Kenya

Wanjogu R.K, Machungo C, Owilla B. P, Njoka J.J.

NIB RESEARCH WORKSHOP 13th & 14th June

System of Rice Intensification (SRI) System of Rice Intensification (SRI)

SRI - A set of farming practices developed to increase the productivity of land and water, as well as other resources.

SRI is based on intermittent irrigation, developing healthy, large and deep root systems that can better tolerate drought, water-logging and lodging.

SRI IN PRACTICE (PRINCIPLES)SRI IN PRACTICE (PRINCIPLES)

1. Seedlings transplanted at a much younger age. (8-12 DAS)

2. Transplanting: Single seedling/ Hill

SRI Principles Cont.SRI Principles Cont.

3. Wider Spacing in a square pattern. (25 by 25 cm)

4.Intermittent water application to create wet and dry soil conditions Vs .flood irrigation.

Pilot ProjectPilot Project

Pioneer farmer in the field

SRI Field

Conventional Field

UREA DEEP PLACEMENT (UDP)

Nitrogen balance for broadcasted N Nitrogen balance for broadcasted N fertilizer in rice field fertilizer in rice field

UREA DEEP PLACEMENT- UDPUREA DEEP PLACEMENT- UDP

OBJECTIVEOBJECTIVEEvaluate the effectiveness of

combining SRI and UDP Practices on growth and yield of lowland rice.

Specific ObjectiveEvaluate the performance of different

varieties under SRI/UDP combination

Determine the optimal spacing for the test varieties under SRI and UDP system

MethodologyMethodologyFertilizer treatments2.7gram Urea Super Granule 1.8 gram Urea Super granule Standard practice- Split application of

SA

Varieties

Bas 370, IR 2793, BW 196Spacing 20cm x 20cm : 25cmx25cm: 30cm

x 30cm 12

Experimental Design Experimental Design

Factorial Experiment

Split –Split plot RCB Design Fertilizer treatment- Main plot Variety – Sub plot Spacing – Sub- sub plot Factor Crop Management- As per SRI practice

Field experiment layoutField experiment layout

Data Collection Data Collection

Growth Plant height Tiller counts

Yield parameters Tiller counts at harvest – PT, NPT &

TT Panicle data- FG, SG, TG & Sterility 1000 grain weight Yield Kg/Ha

14, 28, 42, 56 , 70 & 84DAT

RESULTS RESULTS

BASMATI 370

Plant height (cm)

Tiller number

BASMATI 370

BASMATI 370

BASMATI 370

IR 2793

IR 2793

IR 2793

BW 196

BW 196

CONCLUSIONCONCLUSIONThe varieties responded differently to

the treatments at the different spacings.

However, considering that previous UDP and SRI separate evaluations indicated cost advantage over the conventional method, the study need to be repeated in order to get conclusive findings.

THANKYOU THANKYOU