Abstract
In order to reduce the increase of fuel prices, and improve the living conditions of the population, a study was carried out by Convention No. 1/IRAD/PCS ESA2-SDCC in the region of Garoua in Cameroon. The study aimed to characterize the behaviour of J. curcas associated with V. unguiculata in marginal soils in the Sahel region in order to improve the livelihoods of the farmers and promote its domestication in rural areas. It also aimed at pointing out the influence of two implantation techniques of J. curcas on the germination, the different quantities of NPK and cow dung, planting techniques and association with V. unguiculata var. lori on growth parameters of development and yield of J. curcas on the degraded marginal soils in the region. The experimental design was a completely randomized block with five levels of fertilization (F0: control; F1: 50 g; F2: 100 g of NPK 15-20-15; F3: 1 kg and 2 kg of cow dung) per plant. Two types of establishment propagator (Ge) and direct seedling (Se) with three replications were used. Data were analysed by Stratigraphic + and XLSTAT. Results showed that the propagator germination was higher than the direct seeding, 95% and 40% respectively. The Principal Component Analysis (PCA) of the parameters of growths and yield of J. curcas showed high correlation between the production of the leaves and the length of the leaves (R = 0.861; P 0.001). These parameters were correlated with the Biplot (F1 and F2) to 53.24%. It was opposed to the positives and imperfect correlation between the height and the recover parameters (R = 0.486; P 0.05). The treatments 100 g of NPK per plant and 2 kg of cow dung per plant induced strongly the development and yield of J. curcas and V. unguiculata adapted to marginal soils.
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Claims 6
Claim · model-written summary
Propagator germination exceeded direct seeding, 95% versus 40%.
- Taxon
- Jatropha curcas
_tree_at_Samedha.jpg?width=60)
Jatropha curcast0 - Treatment
- propagatore0
- Outcome
- germinatione0
- Direction
- highere0
- Value
- 95%e0
- Qualifier
- 40%e0
- Comparator
- direct seedinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_tree_at_Samedha.jpg?width=500)
Verbatim
e0“propagator germination was higher than the direct seeding, 95% and 40% respectively”
t0“Jatropha curcas”
Claim · model-written summary
Leaf production and leaf length were highly correlated in J. curcas.
- Taxon
- J. curcasJatropha curcase1
- Organ / stage
- leavese0
- Outcome
- production of the leavese0
- Value
- R = 0.861e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“high correlation between the production of the leaves and the length of the leaves (R = 0.861; P 0.001)”
e1“growths and yield of J. curcas”
Claim · model-written summary
The growth and yield parameters correlated with the PCA biplot at 53.24%.
- Taxon
- J. curcasJatropha curcase1
- Outcome
- These parameterse0
- Value
- 53.24%e0
- Comparator
- Biplot (F1 and F2)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These parameters were correlated with the Biplot (F1 and F2) to 53.24%”
e1“growths and yield of J. curcas”
Claim · model-written summary
Height and recover parameters had a positive imperfect correlation.
- Taxon
- J. curcasJatropha curcase1
- Outcome
- heighte0
- Value
- R = 0.486e0
- Comparator
- recover parameterse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“positives and imperfect correlation between the height and the recover parameters (R = 0.486; P 0.05)”
e1“growths and yield of J. curcas”
Claim · model-written summary
100 g NPK per plant strongly induced development and yield of J. curcas and V. unguiculata.
- Taxon
- J. curcas and V. unguiculata
Vigna unguiculataJatropha curcase0 - Treatment
- 100 g of NPK per plante0
- Outcome
- development and yielde0
- Direction
- induced stronglye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments 100 g of NPK per plant and 2 kg of cow dung per plant induced strongly the development and yield of J. curcas and V. unguiculata adapted to marginal soils”
Claim · model-written summary
2 kg cow dung per plant strongly induced development and yield of J. curcas and V. unguiculata.
- Taxon
- J. curcas and V. unguiculataVigna unguiculataJatropha curcase0
- Treatment
- 2 kg of cow dung per plante0
- Outcome
- development and yielde0
- Direction
- induced stronglye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The treatments 100 g of NPK per plant and 2 kg of cow dung per plant induced strongly the development and yield of J. curcas and V. unguiculata adapted to marginal soils”
The same questions in other papers
fertilization · yield · Jatropha curcasPositive and negative results
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- no effect
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274 papers in the same direction as this paper · 15 in the opposite direction · 2 reporting no difference from an alternative
- no effect
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See all 292 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.