Managing the post-weaning period in children-farm in North Kivu is a problem that requires the use of local products of agriculture. A composite flour made from corn, sweet potato, pumpkin and soy has been proposed to substitute breast milk. Three treatments were then developed with each clean overalls him. The physico-chemical analyzes and the organoleptic characteristics tests were then performed on the three treatments at the end of which the following results were obtained:
- Treatment III, containing 30% corn, 40% of sweet potato, squash 10% and 20% soy, was found to be the combination that offers many advantages over other light of its wealth protein, minerals and vitamins;
- The composite flour obtained has remarkable physicochemical properties. Low humidity for proper preservation, a protein capable of covering in small quantities the protein needs of children under one year, an acceptable percentage of fat needed to provide essential lipids in the body without so ask digestion or diarrhea problems. The only drawback it has is that it contains few minerals and vitamins.
- When compared to breast milk and formulations already developed in the North, the composite flour obtained is illustrated with a high protein content (16%), low humidity and a share of acceptable fat. It also has weaknesses as regards mineral salts and vitamins.
- The organoleptic characteristics of this flour have been very interesting with an average rating of "very good" from every point of view whether the aroma, the taste and color.

La production des légumes devient de plus en plus impérieuse dans les agglomérations comme c'est le cas dans la ville de Bukavu dont la population accroit avec une vitesse anachronique au taux de normal de la démographie.
Cette étude intéresse la production en termes de biomasse des feuilles de chou rouge et dont l'observation a portée sur la croissance, la formation des pommes et le rendement sous différents traitements d'engrais organiques.
Les résultats sont évalués à deux niveaux :
Sur le plan de l'analyse physico-chimique des sols, il ressort un apport considérable dans le changement de la composition du sol enrichi. Le fumier est plus remarquable en apport d'azote et de phosphore, l'engrais flamand en complexe d'échanges (Ca, Mg, K) et le phosphore.
Sur le plan de l'évolution des plantes, l'engrais flamand vient en premier sur les aspects : nombre (33,8 - 47,4), taille (312cm2 - 902cm2), coloration des feuilles (vert rouge – vert cendre rouge), diamètre de pomme (3,2-6,2), rendement/ poids moyen (0,35kg – 0,65kg). Les résultats pour le fumier et le compost sont de moyenne entre l'engrais flamand et le témoin.
Ce qui rassure de remettre à la terre ce qu'elle perd après récolte dans les champs et vendues comme denrées alimentaire. L'engrais flamand et sa production en quantité suffisante dans le cadre d'assainissement des sanitaires à travers la ville de Bukavu, offre une opportunité et constitue une alternative de renforcement dans la production du fumier de la spéculation leguminière.

This research consisted to the assessment of the degree of pollution of the waters of the Kivu lake: case of the basin of Bukavu, being given the different affluents that himself pours there with all ways of garbages.
The objective of this last is to achieve a qualitative survey of the waters of the Kivu lake according to the ecological norms in the determination of the temperature, the pH, the alkalinity or the acidity, of the dissolved oxygen and of the biologic and chemical demand in oxygen on one hand; and on the other hand the comparison of the pollution degree in the different mentions retained: SNCC, BRALIMA, PHARMAKINA, BWINDI, KAZINGO and RUZIZI, the waters of large having served like witnesses.
After analysis of results, he/it cleared himself/itself what follows:
- The temperature of the waters of the Kivu lake is variable next one seasons with an average of 23°C;
- The waters of the lake are alkali and variable according to seasons;
- The dissolved oxygen is variable between 2,92 and 4,84mg/l, what is an admissible value for a better life in the aquatic middle because lower to 5mg/l.
He/it is therefore conclusive that the waters of the coastline of the Kivu lake in the basin of Bukavu are polluted in the decreasing order in sites of the following manner: SNCC, PHARMAKINA, KAZINGO, BRALIMA and BWINDI.