Field trial was carried out in the Soudano-Guinean zone of Cameroon to investigate the effect of intercropping systems of castor bean with common bean and maize on their growth and yield. Randomized complete block des...Field trial was carried out in the Soudano-Guinean zone of Cameroon to investigate the effect of intercropping systems of castor bean with common bean and maize on their growth and yield. Randomized complete block design with three replications was used and five treatments： castor bean in monoculture or in association with common beans or maize, common bean in monoculture and in association with castor bean, maize in monoculture and in association with castor bean. The growth parameters and seed yield were evaluated. Castor beans associated with either maize or common bean grew faster compared to the monoculture system. In addition common bean exhibited fast growth and high seed yield when associated to castor bean, while, no significant difference was observed for maize. In conclusion, the culture of castor bean in association with common bean or maize is advantageous for the peasants in the Adamawa Cameroon region.展开更多
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 c...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 ofJ.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 d.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;FI: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 ofJ.curcas and V.unguiculata adapted to marginal soils.展开更多
A study was carried out in the Northern region of Cameroon to assess the influence of fertilizers （chemical fertilizer NPK （15-20-15 w/w/w） or cow dung） on the growth and yield ofJatropha curcas from four origins ...A study was carried out in the Northern region of Cameroon to assess the influence of fertilizers （chemical fertilizer NPK （15-20-15 w/w/w） or cow dung） on the growth and yield ofJatropha curcas from four origins namely Cameroon, Senegal, Tanzania and Mozambique. The experimental design was factorial with 4 origins×3 fertilizers×8 month durations. After planting, growth parameters and dendrometric measurements were carried out monthly during eight months. Data were analyzed using a Statgraphics program and Duncan test. The results showed that plant of Tanzania and Mozambique origin had higher germination rate in field 75% and 69.5%, respectively. The survival rate of transplants was 100% for Cameroon origin and 98.48% for Senegal origin. NPK and cow dung significantly （P 〈 0.05） increased the growth parameters height, diameter, number of ramifications, leaves and fruits of Jatropha curcas. In addition Jatropha from Cameroon origin exhibited the highest growing conditions and high fruit yield, then highlighting its potential for the biofuel program of the country. But significant improvement needs to be done, particularly on the level of fertilizer needed.展开更多
文摘Field trial was carried out in the Soudano-Guinean zone of Cameroon to investigate the effect of intercropping systems of castor bean with common bean and maize on their growth and yield. Randomized complete block design with three replications was used and five treatments： castor bean in monoculture or in association with common beans or maize, common bean in monoculture and in association with castor bean, maize in monoculture and in association with castor bean. The growth parameters and seed yield were evaluated. Castor beans associated with either maize or common bean grew faster compared to the monoculture system. In addition common bean exhibited fast growth and high seed yield when associated to castor bean, while, no significant difference was observed for maize. In conclusion, the culture of castor bean in association with common bean or maize is advantageous for the peasants in the Adamawa Cameroon region.
文摘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 ofJ.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 d.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;FI: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 ofJ.curcas and V.unguiculata adapted to marginal soils.
文摘A study was carried out in the Northern region of Cameroon to assess the influence of fertilizers （chemical fertilizer NPK （15-20-15 w/w/w） or cow dung） on the growth and yield ofJatropha curcas from four origins namely Cameroon, Senegal, Tanzania and Mozambique. The experimental design was factorial with 4 origins×3 fertilizers×8 month durations. After planting, growth parameters and dendrometric measurements were carried out monthly during eight months. Data were analyzed using a Statgraphics program and Duncan test. The results showed that plant of Tanzania and Mozambique origin had higher germination rate in field 75% and 69.5%, respectively. The survival rate of transplants was 100% for Cameroon origin and 98.48% for Senegal origin. NPK and cow dung significantly （P 〈 0.05） increased the growth parameters height, diameter, number of ramifications, leaves and fruits of Jatropha curcas. In addition Jatropha from Cameroon origin exhibited the highest growing conditions and high fruit yield, then highlighting its potential for the biofuel program of the country. But significant improvement needs to be done, particularly on the level of fertilizer needed.
