Management of Helicoverpa armigera (Hubner) on cotton by host plantresistance and sowing time
2004
Mustafa, G. | Nasreen, A.,Bahauddin Zikrya Univ., Multan (Pakistan).University College of Agricultur
Experiments were conducted to record the larval population and damagecaused Helicoverpa armigera on four cotton cultivars viz., NIAB-krishma (V1),FH-900 (V2), CIM-446 (V3) BH-118 (V4), sown on four different dates, viz., 25-April (D1), 10-May (D2), 25-May (D3) and 9-June (D4), Mean population anddamage caused by the larvae of first generation of H. armigera was nonsignificant for all the cultivars. While, it was found significant, when recordedin relation to sowing dates. Interaction between plant genotype and sowingdates showed that early planting dates supported the high larval populationand percent fruit injury by H. armigera on each of the cultivar.
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