La production maraîchère est une filière importante de l’agriculture urbaine et périurbaine en Afrique. En République démocratique du Congo, un projet d’horticulture urbaine et périurbaine a été mis en place avec l’appui technique de l’Organisation des Nations Unies pour l’alimentation et l’agriculture pour vulgariser des techniques de production et protection intégrées. Les techniques promues comprenaient l’usage des fertilisants naturels, des extraits de plantes à effet insecticide, des produits naturels de lutte contre les ravageurs, les associations et les rotations culturales, l’usage raisonné des pesticides en dernier recours, ainsi que l’utilisation de variétés résistantes aux maladies. Le modèle Logit a permis d’analyser les données d’enquête d’un échantillon de 246 maraîchers à Lubumbashi entre mars et juin 2016 pour identifier les facteurs favorisant l’adoption des techniques promues. L’appartenance à une association de maraîchers et la formation reçue en maraîchage sont deux facteurs clés qui influencent positivement et significativement l’adoption des techniques de production et protection intégrées, respectivement de 3,5 à 7 fois plus que les agriculteurs n’appartenant pas à une association ou n’ayant pas reçu de formation. Ces résultats suggèrent que la participation des agriculteurs à des ateliers de formation et à des groupes de discussion au travers de champs-écoles peut servir de catalyseur pour accroître l’adoption de techniques innovantes en maraîchage.

The adverse impacts of mining industries on human health, local biodiversity, and food security are well-documented in the Katangese Copperbelt. However, farmers' perceptions of pollution and their struggles to obtain compensation for the externalities of mining industries are little addressed in scientific and public debates. Drawing on interviews with smallholder farmers, local civil society archives, oral histories, and analysis of satellite images, this article presents a case of farmers of Mulungwishi Valley whose fields and waterways were polluted by mining effluents. While 25% of respondent farmers argued that they had noticed pollution from the beginning of the 2000s, testimonies from civil society, customary authorities, and farmers concurred that the phenomenon has increased since 2010. Particularly between 2013 and 2014, the death of fish in the Mulungwishi River, the coloration of the water, the spread of mining effluents across the valley, and crop failure raised concerns and despair among farmers. Remarkable changes in land cover and use were noticeable. Since a joint impact assessment in 2014 by la Générale des Carrières et des Mines’ (Gécamines) experts and farmers, civil society unsuccessfully continued a struggle to obtain compensation for about 2570 farmers affected by pollution. Despite an absolute silence of the polluter, 88% of these farmers insisted on the depollution of the valley and were willing to accept, if it was offered, financial compensation of $US 2820 per farmer. The decade-long persistence of farmers in asserting these requests debunks the view of farmers as passive or not concerned about environmental pollution. This article will be helpful for stakeholders (victims and polluters) to find common ground when resolving this environmental issue that has resulted in socio-economic difficulties beyond the valley.

In the South Kivu province of the DR Congo, marshes are considered as favorable lands for various crop productions, and these improve food security and livelihood of thousands of households. We analyzed survey data collected from 148 farmers using a binary logit model and descriptive statistics in order to identify the potential threats to agricultural production, and the coping strategies used by farmers in marshlands. Results showed that 65% of respondents were female, and 76% of all farmers claimed perceiving threats to agricultural production in marshes. The perceived potential threats to agriculture included floods, pest infestation (millipede, fall armyworm), crop theft, and unsecure land-holding status as well as the decrease in soil fertility. Moreover, the ongoing COVID-19 pandemic has also led to the increase in prices of agricultural inputs (pesticides, seeds), and manure that has become increasingly rare and expensive due to the drastic reduction in livestock in that region weakened by several years of civil war and insecurity. In response, farmers were combining several adaptation strategies and these included drainage, mulching, manure application, and crop diversification used by farmers for, respectively, managing floods, maintaining soil fertility, and reducing crop failure. To cope with land scarcity, both female (75%) and male farmers (60%) claimed seeking for lands in highlands and renting extra plots in the same marshes or elsewhere. Despite the strategies implemented, there is still a need to strengthen farmers’ knowledge of flood and pesticide management and promote the integrated pest management practices for a sustainable use of marshlands.

The move towards reducing environmental and health risks related to pesticide application in smallholder agriculture requires a more detailed understanding of farmers’ awareness and pesticide use practices. Drawing on field observations and interviews with 90 randomly selected farmers, this study assesses the choice of pesticide, use patterns and the level of awareness of pesticide risks among male and female farmers growing vegetables on Idjwi Island, eastern Democratic Republic of Congo. The main crops grown are tomatoes, eggplants, and cabbages, which are vulnerable to pest attacks, leading to fruit rot (70%), leaf holes, and spots (17%), resulting in significant economic losses. To protect crops, farmers use various pesticides, including fungicides (e.g., Metalaxyl, Mancozeb) and insecticides (e.g., profenofos, Cypermethrin), based on their availability on local market, perceived effectiveness, and relatively affordable prices. Although the results did not reveal significant differences in pesticide use patterns between male and female farmers, men (41%) make decisions about pesticide purchase and use within households either alone or jointly with their spouses (31%). Regrettably, farmers disregard safety instructions and hygiene practices following pesticide application, leading to concerns about public health and the environmental impact of using these products. While we highlight the factors influencing farmers’ willingness to wear protective equipment, findings also show that 75% of the participants are willing to pay $US 5 for any alternative method to pesticide use. This study emphasizes the need for improving awareness and recommends field farmers’ schools to train farmers on pesticides’ proper usage and management. The results suggest further research on farmers’ exposure to pesticide and the exploration of existing alternative methods based on integrated pest management to advance sustainable agriculture.

Une enquête a été réalisée sur l’île d’Idjwi, à l’est de la République démocratique du Congo, pour évaluer les pratiques phytosanitaires actuelles et les risques perçus par les agriculteurs. Les maraîchers, constitués en majorité de femmes (68 %) utilisent en cultures de tomate, de choux et d’aubergine, une diversité de fongicides, souvent en combinaison (43 %) avec des insecticides tels que la cyperméthrine. Le choix de ces pesticides est principalement déterminé par la perception de leur efficacité par les maraîchers et leur disponibilité sur les marchés locaux, où les revendeurs sont la principale source d’information des agriculteurs. L’incapacité des autorités compétentes (Office national de la protection des végétaux, Office congolais de contrôle) à limiter la distribution des pesticides non autorisés et très dangereux (e.g., profénofos), l’analphabétisme (39 % des agriculteurs) et l’absence de formation à l’usage des pesticides ne favorisent pas de bonnes pratiques phytosanitaires. De plus, le non port des équipements de protection (62 % des cas) et le non-respect des délais de sécurité ainsi que la négligence des pratiques d’hygiène après traitement (50 % de cas) exposent les maraîchers aux risques des pesticides, avec un impact potentiel direct sur leur santé. Enfin, les déchets de pesticides abandonnés sur les exploitations (60 %) et la mauvaise gestion de la bouillie restante après traitement contribuent à polluer l’environnement. Nous proposons donc une série d’actions pour favoriser une gestion rationnelle des pesticides et une amélioration des pratiques phytosanitaires des agriculteurs de l’île d’Idjwi.