Impact of granivorous birds on the yield of rainfed rice Or(yza sativa L.) in Ubangi Province, DR Congo

A study on the impact of granivorous birds on rice yield was carried out at the Bokonzi High School of Agricultural Studies, located in the Sud-Ubangi province in Democratic Republic of Congo.The aim of the study was to evaluate the yield deficit of rice in husk, due to the birds in study area. The results showed that the rate of deficit due to the birds is 4.67% for fields kept on surveillanceand 28.35% without surveillance (about 16.1% of yield/ha). According of the current price of dry paddy in this area, the yield deficit of rice in value is respectively 28.35 USD and 167 USD with an average of 97.83USD of deficit/ha. This loss of yield constitutesan important economic and social deficit for the rice culture practitioners

Impact des oiseaux granivores sur le rendement de la culture du riz pluvial (Oryza sativa L.) dans la province du Sud-Ubangi, RD Congo

A study on the impact of granivorous birds on rice yield was carried out at the Bokonzi High School of Agricultural Studies, located in the Sud-Ubangi province in Democratic Republic of Congo. The aim of the study was to evaluate the yield deficit of rice in the field, due to the birds in the study area. The results showed that the yield deficit due to the birds was 4.67 % for fields kept on surveillance and 28.3 % without surveillance (about 16.1 % of yield/ha). According of the current price of dry paddy in this area, the yield deficit of rice in value is respectively 28.3 USD and 167 USD with an average of 97.8 USD of deficit/ha. This loss of yield constitutes an important economic and social deficit for the farmers. KEYWORDS: Oryza sativa, Granivorous birds, Surveillance, Yield, Democratic Republic of the Congo.Une étude de l’impact des oiseaux granivores sur le rendement du riz pluvial (Oryza sativa) en culture pure a été conduite à l’Institut Supérieur d’Études Agronomiques (ISEA) de Bokonzi, dans la province du Sud-Ubangi, en République Démocratique du Congo. L’objectif principal de cette étude était d’évaluer les déficits des rendements de la culture pluviale du riz, causés par les oiseaux granivores dans la zone d’étude. Les résultats des analyses statistiques démontrent que le taux de déperdition dû à l’action des oiseaux est de 4,67 % dans les champs surveillés et de 28,3 % dans les champs non surveillés, soit une perte moyenne à l’hectare de 16,1 % de rendement. Ceci traduit une perte respective équivalant à 28,3 USD et 167 USD, soit en moyenne 97,8 USD/ha. Ces pertes constituent un déficit socio-économique important pour les riziculteurs. MOTS-CLEFS: Oryza sativa, Oiseaux granivores, Surveillance, Rendement, République démocratique du Congo