Identification of Rice Insect Pests (Oryza sativa) Grown in Kindu: Case of the Lwama I Site

Abstract

The experiment was carried out in the DRC, Maniema Province, City of Kindu precisely in the Lwama I university site. The main objective of this study was to identify the insect pests of rice (Oryza sativa) grown in Kindu. Indeed, in a specific way, we have set the following objectives: to determine the types of insects that attack rice grown in Kindu, and to observe the damage caused by insect pests to the organs of rice grown in Kindu. To achieve these objectives and test our hypotheses, we used the experimental method with a randomized complete block design with 4 treatments and 4 replicates.

At the end of this study, the following results were obtained: (1) The order of orthoptera 29.4% and beetle with 24% were important; (2) 17 species of insect pests have been identified and described; (3) 4 species showed the high number of insects inventoried (Zonocerus variegantus with 38 insects, Orseola oryzivora with 34 insects, Diploxis falaxis with 31 insects and forficula auricularia 28 insects); (4) 3 species caused serious nuisance during the vegetative phase (Coccinella septempunctata with 60%, Cnapholocrosis medinalis and Shistocera gregaria attacked at 55%); (5) 3 species were important for the nuisance in the production phase (Forficula auricularia caused damage at 80% attack, Diaperasticus Erytrocephalus at 70% and Leptoglosus membranaceus at 56.1%).

In view of these results, the production of rainfed rice cultivation in Kindu reinforces a problem related to attacks, especially since each species causes losses on the different organs and on each phase of the plant's development. Losses caused by insects that cut the stubble and destroy the panicles are more formidable.