Mountainous South Kivu has potential but its exploitation is subject to constraints of various kinds. The living conditions of households are bad. Poverty affects more than seven out of ten households. The majority of the population works in agriculture, but income they derive from it is considered insignificant. This study presents the results of an analysis of food security factors in 288 households in Kabare, Kaziba, Luhwinja and Ngweshe. It took place in the first half of 2018. In this study area, food production is confirmed to be insufficient and can’t ensure food self-sufficiency. The majority of households own land ranging from 0.1 to 0.9 ha (43.1% of households); the external dependence of households is high (on average 9 months of deficiency); only 12.7% of households receive food aid; income is estimated at $ 0.7 / person / day; the available infrastructure is faulty and insufficient; the households take 2 meals a day (morning and evening) considered unbalanced but in sufficient quantity; the probability of having malnourished children aged 0-5 years is 16%, while acute malnutrition is 33%, compared with severe malnutrition of 22.3% for an estimated food insecure population of 55%. , 3%. This situation is exacerbated by climate disruptions and significant distortions in agricultural product markets. Therefore, it is recommended to support and support in an efficient and effective way the revival of agropastoral production which must be at the center of the provincial strategy of food security. However, no agricultural and pastoral revival will be possible without a more active presence of the State.

In the DR Congo and more particularly in the Center-Eastern part, the populations of both urban and rural areas are experiencing signs such as the late and sometimes sudden return of rains, high temperatures, unusual drought and a disruption of the agricultural calendar. This study consisted of analyzing meteorological data from 1980 to 2016 in the Bukavu region around Lake Kivu; changes in the water levels of this lake, yield of cassava, beans, corn and potatoes from 1992 to 2015 to determine if there have been climatic disturbances and their consequences in agriculture. These data were coupled with those of a survey of 90 households to analyze their perceptions of climate change and resilience practices. The results show that the majority of crops in Central - East DRC suffer from biotic and / or abiotic stresses due to the effectiveness of climatic disturbances. The component factor analysis of the evolution of the agricultural yield of the four crops testifies that climatic changes have partial impact on yields with consequences the appearance of poorly controlled diseases of some plants, an ever-decreasing diminution of the agricultural production, the persistence of malnutrition in households, etc. The resilience strategies developed by households are the adoption of the Integrated Management of Soil Fertility package and the reorganization of the agricultural calendar.

In the perpective of enquiring the state of the plantations phytosanitairy of coffee tree of the North Kabare in order to undertake the averages ways of fighting (preventive, curative or integral) able to grow up the coffee production in the science subjects in the South Kivu coffee tree a study for evaluation the phytosanitary state of coffee plantations in the region of Kabare the North has been done. At the end of the study, it has noticed that the anthracnose, the rust, the die-back and the sigatoka even the thrips unwrapping, the drawing pin coffee tree, the dentals drawing pin, the rongers leaves catapillar, the pyral of drupes and the coffee tree hannetons are respectively the illnesses and the found insects in the coffee plantations of the North Kabare but with the incidence relatively different. The anthracnose's rate incidence has been very highest (33%), followed by the coffee trees rust (30%) than the sigatoka (22%) and at the end die-back (15%). As far as ravagers are concerned, the drawing pin of coffee tree presented a relative incidence the highest of 32% of order, followed by the unwrapping thrips (15%), and the coffee tree hannetons (14%), of rongers leaves catapillar (14%), of pyral of drupes (13%) and at the end of dentel drawing pin (12%). All the coffee trees of the region of the North Kabare are old in the way that their ages vary between 43, 1 years and 69 years with 57, 5 years of average.

In an attempt to find non-harmful to humans and does not pollute the environment, effective tack against the coffee and alternatives to synthetic pesticides polluters of the environment, an in vitro test of activity biodegradable organic substances insecticides, insecticide alkaloids, steroids, saponins and isolated Capscicum frutescens L. terpenes was performed in the presence of synthetic pesticides (Supadip and Dimethoate) and water as controls. Mortality tack the coffee very varied significantly depending on the treatment, concentration as well as the interaction of treatment and concentrations of insecticides tested substances. The insecticidal activity of Supadip was superior to all other insecticides tested at doses of 0.01ml / l and 0.1 ml / l (100% mortality) at the dose 0,636g / l, the alkaloids have Capsicum similar to that of Supadip and dimethoate (100% mortality) effect. Steroids have a mortality of 57% at the dose 0,636g / ml saponins and terpenes have a minimum effect to said dose. Dimethoate was inactive at doses 0.1 ml / l and 0.01ml / l. Alkaloids have low lethal dose LD50 (0.21