soil effects on development of non toxic piñón

O. A. Valdés Rodríguez, Sánchez-Sánchez, Pérez-Vázquez, Ruíz-Bello

Soil texture effects on development of non-toxic piñón (Jatropha curcas L.)

seedlings

International Conference on JATROPHA CURCAS 2010Groningen, The Netherlands

November 1-2, 2010

Contents Introduction

Jatropha curcas non-toxic Origens and distribution Uses in México

Soil requirements What is promoted

Our research Objectives Hypothesis Methodology Results Conclusions

Jatropha curcas non-toxic

Disemination (Heller, 1996)

Origins and distribution

Non-toxic

Toxic

Piñon manso traditional uses

Live fensesSkin deceasesTraditional dishes

Soil texture requirements

What is promotedHigh potential

SandySandy-Loam

Low potentialClay

Research

ObjectiveTo determine the effects of different soils over

development and growth of root and shoot of non toxic J. curcas seedlings.

Research

HypothesisHo: Jatropha curcas seedlings growth is the

same in sandy, sandy-loam, and clay-loam textures

Ha: Jatropha curcas seedlings growth is different in sandy, sandy-loam, and clay-loam textures

Methodology

Site and conditionsSoutheasth México

19° 16' 00" N and 96° 16' 32" W18 m altitude

Natural conditionsTemperature: 19.8 ºC - 40.2 ºCHumidity: 63.2%

Methodology

Biological material: Non-toxic seedsLocation: 18º 59’52” N, 96º

15’ 31” W, 17 moslPhysical data

Weight: 742.0 mg ± 24.3 mgLength: 18.55 mm ± 0.68 mmWidth 10.3 mm ± 0.30 mm

Weight, D istribution: Normal

0 ,3 0 ,4 0 ,5 0 ,6 0 ,7 0 ,8 0 ,9 1 ,0 1 ,1 1 ,20

20

40

60

80

100

120

140

160

180

No

. of o

bs

erv

atio

ns

Methodology

Experimental design

Treatments Age (days)

Sandy D1 D30

Sandy-Loam D1 D30

Clay-Loam D1 D30

Results

Soil analysis

Table 1. Soil chemical analysis and the method used for each test

Soil type pH Organic matter (%)

Total N (%) P (ppm) Ca(me/100g)

Mg(me/100g)

Method Potentiometer Walkley-Black N=O.Mx0.05Olsen-Kitson

Mellon Diehl et al. Diehl et al.

Sandy7.81

(slightly alkaline)Not detected

(very low)Not detected

(very low)2.8(low) 3.859 7.717

Sandy-loam7.26

(Neutral)1.824

(medium)0.0912

(low)14.0

(medium) 8.770 14.733

Clay-loam7.43

(slightly alkaline)3.397(high)

0.1698(high)

34.0(high) 16.487 25.958

Results

Root collar diameter and heights

Results

Morphologycal parameters

Number of true leaves

Sandy Sandy-LoamClay-Loam

Num

ber

0

2

4

6

8

Stem Volume

Sandy Sandy-Loam Clay-Loam

Vo

lum

e (

mm

3)

0

2000

4000

6000

8000

10000

12000

14000

16000

18000Number of branches


Num

ber

0,0

0,5

1,0

1,5

2,0

2,5

Results

Dry massa) Stem dry mass


Wei

gth

(g)

0,0

0,5

1,0

1,5

2,0

2,5

3,0

b) Root dry mass


Roo

ts w

eigt

h (g

)

0,0

0,2

0,4

0,6

0,8

1,0

1,2

1,4

1,6

b) Root dry mass


Roo

ts w

eigt

h (g

)

0,0

0,2

0,4

0,6

0,8

1,0

1,2

1,4

1,6

Conclusions

Best growth on sandy-loam texturesLowest growth on sandy texturesClay-loam → Highest number of branches

Clay-loam Sandy-loam Sandy

soil effects on development of non toxic piñón

Education