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- Title
Effect of Malathion Applications at Different Times on the Alfalfa Weevil Population, Natural Enemies, Forage Yield and Protein Content.
- Authors
Özmen, Mehmet; Necip Yardım, Erdal
- Abstract
The aim of this study was to determine the effects of insecticides applied at different times against alfalfa weevil, Hypera postica Gyllenhal (Coleoptera: Curculionidae) on pests, natural enemies, forage yield and protein. The study was based on five treatments, including four different spray times (4, 11, 18 and 25 May 2008) and a control, each with four replications and conducted in 18 m² (3mx6m) plots. A malathion based insecticide (Malathion 65% EC) was used against alfalfa weevil. All of the insecticide treatments reduced the populations of alfalfa weevils, aphids and natural enemies significantly. Compared to the control, the lowest weevil populations were observed in the plots treated on May 4th Correspondingly, the forage yield and the crude protein content increased 73.88% and 51.59%, respectively. Overall, results indicated that timely insecticide applications were more effective in chemical control of alfalfa weevil and increase of forage yield and quality.
- Subjects
MALATHION; PHYSIOLOGICAL effects of insecticides; ALFALFA weevil -- Control; HYPERA; CHOLINESTERASE-inhibiting insecticides
- Publication
Pakistan Journal of Zoology, 2013, Vol 45, Issue 5, p1459
- ISSN
0030-9923
- Publication type
Article