The present study looked at the effects of planting date and spaces on growth and yield of soybean (Glycine max L. Merr) in soil and climatic conditions in Lubumbashi region. The trial was installed following a split plot design with three replicates. The main plots consisted of sowing dates (15th December, 30th December and 15th January) and the second plots included all seeding rates leading to a population of 125,000 plants per hectare (40 Cm x 20 cm was due to seed per hole; 40 cm x 40 cm with 2 seeds per hole and 60 cm x 40 cm with 3 seeds per hole). The results showed that late planting leads to slower growth and reduced yield of soybean. However, different plant densities adopted included similar effects in all the parameters observed. Planting soybean on the 15th December at a space of 40 cm x 20 cm x 3 seeds per hole would effectively increase soybean yield in the Lubumbashi region. The increase in performance would be desirable in order to fight against bad nutrition considering the scarcity of animal protein and the low- income populations.

This study checks the hypothesis which the organic amended contain components alternatives according to their mode of obtaining and conservation. Their use in agriculture efficiently contributes to resolve the problem of infertility of the soil. Samples of biowastes were analyzed at the laboratory to determine the composition in major fertilizers. Four doses of biowastes and three doses of fertilizers were applied only or in combination in a device completely randomized to three repetitions. The observations on the onion and spinach plants related to the height of plants, the number of sheets and the weight of the useful product and the results obtained were subjected to the analysis of the variance. It emerges from the physical characterization that the biowastes contain more 95% of organic matter. The chemical composition as well with it showed as these biod

Banana is exposed to many problems including excessive soil salinity and irrigation waters that decrease productivity. This trial was conducted to evaluate the effects of salinity on the behavior of banana and diversity of fungi in the soil. The trial was installed under greenhouse craft following a completely randomized design with 3 replications. Two banana cultivars (Pelipita ABB and Plantain) were subjected to increasing doses of NaCl (0, 2, 4, 6 and 8 g/ l). The behavior of cultivars, Na and K accumulation in the leaves and the color diversity of fungi were studied. The results obtained show a similar behavior between the two cultivars of banana on the observed parameters, except the leaf area in 15 days, which is high on the cultivar 1. High levels of NaCl decrease leaf area. Significant differences were observed with a high accumulation of Na with T1 and T2 and a high accumulation of K in T5 and T7. Finally the treatments that received low doses of salt have found a high diversity of fungi colors. These results show that the selection of tolerant cultivars is an inexpensive option to increase banana yield on saline soils, in a context where some poor farming practices such as irrigation and mineral fertilization lead to salinization.

Two essays were carried out to evaluate the effect of different types of auxins on root formation and the influence of dark and culture substratum on tetraploid hybrid FHIA-01 proliferation (Musa spp. AAAB). The plant material consisted of tissue culture plantlets of FHIA -01 hybrid tetraploid banana (Musa AAAB). The trial, with a total of 10 replicates per treatment was carried out in each pot containing five explants. For both tests, a combination of two cytokinins was enriched in culture substratum. The results obtained show that regeneration was high in culture substratum with light than substratum without meta-methoxytopolin riboside (M2). The medium M2 to the light induced a higher number of the buds compared to medium dose reduced meta-methoxytopolin riboside (M1). Meanwhile, only explants inoculated on the medium M1 in the dark induced callus. The bud proliferation, induction of root, leaf and the broadcast callus induction are significantly influenced by the different substratum and photoperiod, increasing the explant size, the number of emerged leaves, roots and the number of the weight of explant with buds proliferated. Formulating specific culture media cultivars according to group (ABB or AAA) and the choice of culture conditions (light intensity) would avoid consecutive failures and low proliferation in in vitro culture.