| Titre : |
Insect pests of sorghum and pearl millet panicles in Asia |
| Type de document : |
texte imprimé |
| Auteurs : |
B.S. Rana, Auteur ; B.U. Singh, Auteur |
| Année de publication : |
1995 |
| Importance : |
p 57-67 |
| Langues : |
Anglais (eng) |
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
ASIE SORGHO MIL A CHANDELLE PANICULE INSECTE RAVAGEUR |
| Résumé : |
In Asia, several species of midges, head bugs, head worms and head beetles are associated with panicle damage in sorghum and pearl millet. Among them, Contarinia sorghicola coquillet in the asian region; Geromyia penniseti felt in southern India; calocoris angustatus lethiery in India, Myanmar and Pakistan; Nezara viridula Linnaeus in Thailand; Nysius plebejus distant in China; helicoverpa armigera Hubner assume greater importance than the others.In this paper, the distribution, economic importance, seasonal occurrence, nature of damage and biology of important species are briefly described. The status of panicle pest spectrum has changed due to the introduction of medim-duration high-yielding cultivars to replace the long-duration traditional cultivars. The extent of avoidable grain yield losses and economic injury levels for sorghum midge and head bugs are also discussed. Cultural strategies which ensure escape from peak period of panicle pest occurrence are described. Although a few biological control agents have been identified and their effective role and establishment under field conditions remain unexplored. Chemical strategies are uneconomical and destabilize the environment. Current research efforts are focused on host-plant resistance to midge and head bug on sorghum and to midge and head worms in pearl millet. These studies have led to the development of midge-resistant cultivars in sorghum, however, resistance to head worms in sorghum and to other panicle pests in pearl millet have not been as successful. |
| Numéro du document : |
A 96000/H00 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
PROTECTION DES VEGETAUX |
| Bull2 (Theme secondaire) : |
RAVAGEURS DES PLANTES |
Insect pests of sorghum and pearl millet panicles in Asia [texte imprimé] / B.S. Rana, Auteur ; B.U. Singh, Auteur . - 1995 . - p 57-67. Langues : Anglais ( eng)
| Catégories : |
SCIENCES AGRICOLES
|
| Mots-clés : |
ASIE SORGHO MIL A CHANDELLE PANICULE INSECTE RAVAGEUR |
| Résumé : |
In Asia, several species of midges, head bugs, head worms and head beetles are associated with panicle damage in sorghum and pearl millet. Among them, Contarinia sorghicola coquillet in the asian region; Geromyia penniseti felt in southern India; calocoris angustatus lethiery in India, Myanmar and Pakistan; Nezara viridula Linnaeus in Thailand; Nysius plebejus distant in China; helicoverpa armigera Hubner assume greater importance than the others.In this paper, the distribution, economic importance, seasonal occurrence, nature of damage and biology of important species are briefly described. The status of panicle pest spectrum has changed due to the introduction of medim-duration high-yielding cultivars to replace the long-duration traditional cultivars. The extent of avoidable grain yield losses and economic injury levels for sorghum midge and head bugs are also discussed. Cultural strategies which ensure escape from peak period of panicle pest occurrence are described. Although a few biological control agents have been identified and their effective role and establishment under field conditions remain unexplored. Chemical strategies are uneconomical and destabilize the environment. Current research efforts are focused on host-plant resistance to midge and head bug on sorghum and to midge and head worms in pearl millet. These studies have led to the development of midge-resistant cultivars in sorghum, however, resistance to head worms in sorghum and to other panicle pests in pearl millet have not been as successful. |
| Numéro du document : |
A 96000/H00 |
| Niveau Bibliographique : |
2 |
| Bull1 (Theme principale) : |
PROTECTION DES VEGETAUX |
| Bull2 (Theme secondaire) : |
RAVAGEURS DES PLANTES |
|
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