This study was conducted in the Lubumbashi region (DR Congo) during the 2013-2014 cropping season to determine optimal doses of chemical fertilizers to be applied to new varieties of maize. Four doses of mineral fertilizers (D1 =
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.
Sustainability and economic efficiency in corn production could increase by the integrated weed management to a tolerable level. A study was conducted at the Kasapa farm during the 2013-2014 crop year to assess growth, grain yield of two improved varieties of maize (UNILU and Bukidi-Bukidi) and production economics Starting from two modes of weeding (manual weeding hoe and chemical weeding) and 4 weed management alternatives: {Weeding Manual (TO), 3l / ha atrazine (T1), 3l / ha acetochlor (T2), 6l / ha atrazine and acetochlor mixture (T3)}. The results revealed that the two varieties were similar height perspective of seedlings and yield. Six species have been recorded, but only two species (Setaria pumila and Cyperus rotundus) were resistant to their presence in all plots. Compared to weed management practices, performance culture has evolved as follows: T2> T3> T1> T0.Cependant an acceptable economic return was obtained with 3l / ha acetochlor. To intensify maize production in the study area, the mixture of acetochlor and atrazine is Discourage while adoption of acetochlor requires an extension on these modes.
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
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