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.
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