Jatropha curcas

1. 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 2010
Groningen, The Netherlands
November 1-2, 2010

2. Contents
Introduction
Jatropha curcas non-toxic
Origens and distribution
Uses in México
Soil requirements
What is promoted
Our research
Objectives
Hypothesis
Methodology
Results
Conclusions

3. Jatropha curcas non-toxic
Disemination (Heller, 1996)
Origins and distribution
Non-toxic
Toxic

4. Piñon manso traditional uses
Live fenses
Skin deceases
Traditional dishes

5. Soil texture requirements
What is promoted
High potential
Sandy
Sandy-Loam
Low potential
Clay

6. Research
Objective
To determine the effects of different soils over development and growth of root and shoot of J. curcas non toxic seedlings.

7. Research
Hypothesis
Ho: 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

8. Methodology
Site and conditions
Southeasth México
 19° 16' 00" N and 96° 16' 32" W
18 m altitude
Natural conditions
Temperature: 19.8 ºC - 40.2 ºC
Humidity: 63.2%

9. Methodology
 Biological material:
 Non-toxic seeds
 Location: 18º 59’52” N, 96º
15’ 31” W, 17 mosl
 Physical data
 Weight: 742.0 mg ± 24.3 mg
 Length: 18.55 mm ± 0.68 mm
 Width 10.3 mm ± 0.30 mm
Weight, Distribution: Normal
0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2
0
20
40
60
80
100
120
140
160
180
No. of observations

10. Methodology
Experimental design
Treatments
Age (days)
Sandy
D1
D30
Sandy-Loam
Clay-Loam

11. 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.Mx0.05
Olsen-Kitson Mellon
Diehl et al.
Diehl et al.
Sandy
7.81
(slightly alkaline)
Not detected
(very low)
Not detected
(very low)
2.8
(low)
3.859
7.717
Sandy-loam
7.26
(Neutral)
1.824
(medium)
0.0912
(low)
14.0
(medium)
8.770
14.733
Clay-loam
7.43
(slightly alkaline)
3.397
(high)
0.1698
(high)
34.0
(high)
16.487
25.958

12. Results
Root collar diameter and heights

13. Results
 Morphologycal parameters
Number of true leaves
Sandy Sandy-LoamClay-Loam
Number
0
2
4
6
8
Stem Volume
Sandy Sandy-Loam Clay-Loam
Volume (mm3)
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
Number of branches
Sandy Sandy-LoamClay-Loam
Number
0,0
0,5
1,0
1,5
2,0
2,5

14. Results
 Dry mass
a) Stem dry mass
Sandy Sandy-LoamClay-Loam
Weigth (g)
0,0
0,5
1,0
1,5
2,0
2,5
3,0
b) Root dry mass
Sandy Sandy-LoamClay-Loam
Roots weigth (g)
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
b) Root dry mass
Sandy Sandy-LoamClay-Loam
Roots weigth (g)
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6

15. Conclusions
Best growth on sandy-loam textures
Lowest growth on sandy textures
Clay-loam → Highest number of branches
Clay-loam
Sandy-loam
Sandy