Objectives: a study on ground both ruderal and representative of the forested savannah completely degraded the city of Lubumbashi on what five varieties of common beans were exploited. Methodology and results: The test has been installed following a complement device randomized with three replicates of five varieties: SER48, BCB 585, SCR14, SER15, and SCR13 .for their assessment against their adaptation to acid soil, the following were observed: days of flowering, days to maturity, vegetative Adaptation, reproductive Adaptation, Infestation of disease, performance and impact to the acidified. The obtained results indicate that there is a difference of effect of adaptation from the varieties as well, so SCR 13, SCR 14, SER 48 and BCB 585 varieties introduced a number high force of adaptation (Group A); and the SER 18 variety has a low number of effect of adaptation (Group B). for the number of pods to reveal a significant difference compared to the varieties; Thus the SER 48 variety has a high number of pods (Group A) however the BCB 585 and SCR 14 varieties give a small number of pods (Group B) and finally the varieties SCR 13 and SCR 15 have given an intermediate number of pods) Group A B) and yields between SCR 13 with 701, 4 kg /Ha and SCR 14 with 575, 8 kg/Ha.

The study was conducted to determine the adequate dose of nitrogen for good production of okra; given that the latter is one of the most consumed fruit in the markets lushois vegetables. Our experience took place in the neighborhood golf plateau in the joint annex to the city of Lubumbashi, in the province of upper Katanga in the Democratic Republic of the Congo. The study site was like geographic coordinate: 11.66964 ° of South Latitude, Longitude East 27.41597 and 1245metre of Altitude. As part of this work, a Latin square experimental device has been used. Three doses of nitrogen (urea) (200,250 and 300 kg/ha) were combined with 250 Kg of NPK17-17-17 per hectare brought before sowing in basal. These from the combination of doses of urea of NPK17-17-17 treatments were compared to the witness who received that the ternary compound fertilizers (NPK17-17-17). The results obtained after the observation of all the parameters observed (the rate of survey, the size of the plant to bloom, the number of fruits per plant, the length of the fruit, diameter of the fruits as well as performance) have shown that the contribution additional doses of nitrogen have favored the growth and the development of our culture. For what is the average yield per hectare, the treatments: T1, T2, and T3 gave the respective returns of: 5, 8 t/ha, 8 t/ha and 5, 3 t/ha higher compared to the control with 4, 0 t/ha.

A study was conducted to evaluate the performance of five varieties of Bean common biofortifie implementation competition under treatment of growth regulators: Allwin Wonder and Allwin top, from February until May 2016. Our experience took place in the experimental field at the Institute superior teaching of Lubumbashi, located on the avenue of the revolution to the Baudouin area. As part of this work, a randomized complete block experimental device has been used. Of our five varieties use, the K132 variety was more precocious to flowering MAHARAGI soybeans takes more time before maturity, however CODMLB007, LSA144 and ZKA93-M95 present a similar result compared to the days of maturation. The CODMLB007 was most attacked by aphids; the LSA144 and MAHARAGI soybeans were less contested and the K132 and ZKA93-M95 are intermediate compared to the impact of aphids attack. For all parameters observed: (days to flowering, days to maturity, reproductive Adaptation (in charge of the pod), vegetative Adaptation (force), attack by insects, performance level), on the threshold of 5%. When it comes to attacks of aphids; the LSA144 MAHARAGI soy have been resistant, have given a better performance and are best suited in the edapho-climate conditions of Lubumbashi.