Seasonal occurrence of Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) and its natural enemies on different varieties of cotton crop
2011
Sahito, H.A. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Entomology) | Lanjar, A.G. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Entomology) | Nahiyoon, A.A. (Center of Agriculture and Bio-science, International (South Asia)) | Khajjak, A.S. (Center of Agriculture and Bio-science, International (South Asia)) | Memon, S.A. (Lasbela Univ. of Agriculture, Water and Marine Sciences, Balochistan (Pakistan). Faculty of Crop and Plant Sciences) | Mal, B.
The studies on "Seasonal Occurrence of Phenacoccus Solenopsis Tinsley (Hemiptera: Pseudococcidae) and its Natural Enemies on Different Varieties of Cotton Crop" was conducted at Experimental Field, Entomology Section, ARI, Tandojam from May to November 2008. Fifteen varieties of cotton crop viz. Cris-134, Chandi, FH-901, CIM-473, CIM-499, Shahbaz, TH-57/96, NIAB-111, CIM-496, Hari dost, Okra leaf, Sindh-1, NIAB-78, Bt. and Okra desi were cultivated in a Complete Randomized Block Design with 4 replications. The results of studies showed that mealybug appeared on all varieties of cotton crop. The occurrence of Phenacoccus solenopsis was recorded one month after sowing (8 June 2008) till harvesting (14 October) of the varieties. The analysis of variance showed highly significant (P less than 0.001) difference in the population of mealybug on the varieties.
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