Effect of cover crop residues on white grubs and adults of Heteronychus bituberculatus (Coleoptera: Dynastidae) and on the damage they cause to upland rice

Rafarasoa Lala Sahondra, Letourmy Philippe, Naudin Krishna, Andrianantoandro A., Rajaonera Tahina Ernest, Randriamanantsoa Richard, Ratnadass Alain. 2016. Effect of cover crop residues on white grubs and adults of Heteronychus bituberculatus (Coleoptera: Dynastidae) and on the damage they cause to upland rice. African Entomology, 24 (1) : pp. 75-79.

Journal article ; Article de recherche ; Article de revue à facteur d'impact
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Quartile : Q3, Sujet : ENTOMOLOGY

Abstract : Black beetles (Heteronychus spp., Coleoptera: Dynastidae) are significant pests of upland rice in the Central Highlands of Madagascar, particularly in some conservation agriculture (CA) systems. On the other hand, certain species of cover crops used in CA systems may have a suppressive effect on black beetle populations or reduce the damage they cause to rice plants. Between 2009 and 2011, we conducted a laboratory study on the possible effects of adding dried ground plant parts (hereafter 'residues') to the soil on larvae (white grubs) and adults (black beetles) of Heteronychus bituberculatus. Ten cover crop species were tested: Cajanus cajan, Crotalaria grahamiana, Desmodium intortum and Vicia villosa (Fabaceae); Brachiaria ruziziensis and Eleusine coracana (Poaceae); Cosmos caudatus and Tagetes minuta (Asteraceae); Cleome hirta (Capparaceae); and Raphanus sativus (Brassicaceae). Adding residues of C. grahamiana, E. coracana and C. caudatus resulted in significantly higher larval mortality than in the control treatments, while residues of R. sativus had a marginally significant effect. Adding residues of C. grahamiana, C. caudatus, C. hirta, T. minuta and R. sativus significantly reduced damage caused by adult black beetles. (Résumé d'auteur)

Mots-clés Agrovoc : Oryza sativa, Riz pluvial, Heteronychus, Déchet agricole, Cajanus cajan, Crotalaria, Desmodium intortum, Vicia villosa, Brachiaria ruziziensis, Eleusine coracana, Cosmos, Tagetes, Raphanus sativus, Lutte biologique, agroécologie, Protection des plantes, couverture du sol, Utilisation des déchets

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés complémentaires : Crotalaria grahamiana, Cleome hirta

Classification Agris : H10 - Pests of plants
H01 - Protection of plants - General aspects
F01 - Crops

Champ stratégique Cirad : Axe 4 (2014-2018) - Santé des animaux et des plantes

Auteurs et affiliations

  • Rafarasoa Lala Sahondra, Université d'Antananarivo (MDG)
  • Letourmy Philippe, CIRAD-PERSYST-UPR AIDA (FRA) ORCID: 0000-0003-1040-0860
  • Naudin Krishna, CIRAD-PERSYST-UPR AIDA (BRA) ORCID: 0000-0002-9108-2456
  • Andrianantoandro A., Université d'Antananarivo (MDG)
  • Rajaonera Tahina Ernest, Université d'Antananarivo (MDG)
  • Randriamanantsoa Richard, FOFIFA (MDG)
  • Ratnadass Alain, CIRAD-PERSYST-UPR HortSys (REU) ORCID: 0000-0002-8873-5671

Source : Cirad-Agritrop (

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