The study of population density of cotton Pests on sole cropping and intercropping of cotton and mellon
2005
Jamili, Hossien | Sirjani, Mohammad | Hossieni, Mehdi | Ghayoor, Mohammad
The natueral environment are continue to distroy by increasing population and progress tecnology. Therfore we must to think to produced sustainable agricaltueral food. Intercropping is one of the methods for enhanced diversity and sustaineble agricaltural productions. In this research the intercropping of cotton and mellon was compaired with monocultuer of thems, that to evaluate the yield and the main pests of cotton. The expriments was conducted in complet block design with four treatments, include sole cropping of cotton, sole cropping of mellon and intercropping of cotton and mellon with eleminate and remain of mellon plants in four replications. The results show that the mellon plants are predominance because earlier planting and speed growing. But cotton plants are defeat because relay planting and slow growing in mixtuer. There was no significant difference between sole cropping and intercropping frome yield and grow plants of mellon, but the yield, earlines and plant hight of cotton were significant difference between sole cropping and intercropping. The mellon plants was controled the weeds of intercropping by covering of the soil. The study of the main pests of cotton was show that, the jassid dencity decrease in sole cropping of cotton but the large anten aphide population was increased.The shedder bug dencity was not significant difference between cotton sole cropping and intercropping but the pests of shedder bug and jassid were fewer in mellon sole cropping than the other treatments. The population of large anten aphides in the cotton sole cropping was maximum and in the mellon sole cropping was minimum, so that in the intercropping was medeum. The most dencity of wite fly was in the mellon sole cropping and the least in the cotton sole cropping. The population dencity of spider mite in the all of treatments was the same.
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