Morphological Characterization of Four Leguminous Crops Cultivated in Two Agro Ecological Zone: Western and Guinean Savannah Highlands of Cameroon

In 2014, quarter (¼) of Africa populations were estimated to be suffering from hunger. In Cameroon, the demand for food is increasing while productivity was decreasing subsequently the food insufficiency. To solve this problem, leguminous crops were valorized in Cameroon. They represent a major source of protein especially among the poorest population, and are rich in essential amino acidssuch as lysine, supplementing thusthe nutritional value of cereal and tuber diets. Nevertheless, their production faced the problem of soil degradation and loss of soil fertility. The main objective of this work was to characterize leguminous crops cultivated in two agro ecological zones of Cameroon. Investigations based on farmer’s knowledge on leguminous crops cultivation were done in Western highlands and High Guinean savannah zones of Cameroon. During this survey, leguminous crops were collected for qualitative and quantitative analysis. Farmers which were mostly women have at least 10 years of experience on these leguminous crops cultivation. They kept their seed for next cultivation season and did not use fertilizers in their field. Based on color of seeds, nine, seven, six and four ecotypes of representing beans, peanuts, Bambara groundnuts and soybeans respectively were found from study sites. Quantitative analysis of these ecotypes presents the diversity of beans, peanuts and soybeans (p = 0.00) according to their biometric parameters. Except the weight of Bambara groundnuts which were different (p = 0.00) their size was similar among ecotypes

Effets de differents sels de sodium sur la physiologie de la tomate (Lycopersicon esculentum (Mill.) var. "Marmande a gros fruits")

SIGLEINIST T 76353 / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc

The Combination of Arbuscular Mycorrhizal Fungi with Rock Powder and Poultry Litter: An Appropriate Natural Fertiliser for Improving the Productivity of Soybean (Glycine max (L.) Merr)

The present study aimed to evaluate the effect of the combination of various natural fertilisers on growth and seed yield of the soybean plants. Field experimentations were carried out during two cropping seasons (2018 and 2019). A randomized complete block experimental design with 11 treatments (F1: 30 g of poultry litter, F2: 60 g of poultry litter, MP: 10 g of mycorrhizae + 10 g of vivianite powder, MF1: 10 g of mycorrhizae + 30 g of poultry litter, MF2: 10 g of mycorrhizae + 60 g of poultry litter, PF1: 10 g of vivianite powder + 30 g of poultry litter, PF2: 10 g of vivianite powder + 60 g of poultry litter, MPF1: 10 g of mycorhizae + 10 g of vivianite powder + 30 g of poultry litter, MPF2: 10 g of mycorrhizae + 10 g of vivianite powder + 60 g of poultry litter, T+: chemical fertiliser, T–: unfertilised plants) and three replications were used. The growth parameters and seed yield were evaluated. The results showed that the growth and seed yield of soybean varied depending on the fertiliser and the cropping season. Plants that have received the MPF2 treatment exhibited significantly (p ˂ 0.05) the highest values of the studied parameters (plants height, foliar production, plants dry biomass, seed yield). The MPF2 treatment increased the seed yield of soybean by 20.08% and 184.76% compared to T+ and T– treatments, respectively. The supply of the following combination, 10 g of mycorrhizae + 10 g of vivianite powder + 60 g of poultry litter was found to be very promising in improving the soybean plant growth and therefore, can be used as an alternative to replacing the mineral fertilisers usually employed for the cultivation of this crop

Effect of Pyroclastic Powder on the Growth and Seeds Nutritional Values of Common Bean (Phaseolus vulgaris l.) on Ferralitic Soils in Adamawa (Cameroon, Central Africa)

Aims: Amendment of ferralitic soils of Ngaoundere (Cameroon) by rock materials, so-called petrofertilizer, can be a promising solution to improve their fertility and thus enhance crop yield. Study Design: In the present study, the influence of pyroclastic powder on the growth of the common bean (Phaseolus vulgaris L.) was assessed. Place and Duration of Study: Department of Biological Sciences. The sowing was done on June 13, 2017 until 2 septembre. Methodology: An experimental design with four (04) different treatments was implemented: 0 g per pot (0% of pyroclastic: the control), 150 g per pot (10% of pyroclastic: P10 Treatment), 300 g per pot (20% of pyroclastic: P20 Treatment) and 450 g per pot (30% of pyroclastic: P30 Treatment). The pyroclastic powder was applied at three different (03) stages: sowing, germination, and flowering stage. All the treatments were irrigated with 250 ml of water once every 3 days during the growing stage. Results: Growth parameters, seed yield, and seeds nutritional values were measured. Results revealed that seeds yield from the treated pot using 30% of pyroclastic powder is 4.2 times greater than that of the control. Globally, pyroclastic powder improved the nutritional values of common bean seeds compared to the Control. Fertilizing the soils at the sowing stage significantly (p<0.05) improves the values of the studied growth parameters. The protein content of seeds from treatment at the sowing stage was 1.05 and 1.11 times greater than that from treatment at germination and flowering stages. Conclusion: The application of 30% of pyroclastic powder at the sowing stage is recommended for the cultivation of the common bean in the Adamawa (Cameroon)