Insect pests

Many insect pests are crop-specific and, in the absence of such a specific host, there is less likelihood of them occurring on a regular basis and attaining threshold level. Soybean, if used appropriately as an inter/mixed crop or in a sequential cropping system, has a positive role in preventing the insect pest cycles of other crops. The effects of intercropping castor (Ricinus communis) and black soybean on the biological prevention and control of major pests have been investigated by Hua et al. (2003). They observed that intercropping castor and black soybean had a significant effect on the prevention and control of A. glycines and L. glycinivorella, but the effect depended on the cultivar. When castor and black soybean 1, which had weak resistance to pests, were intercropped, the number of aphids per plant and the rate of pest damage decreased by 61.5% and 16.2%, respectively, compared with single cropping. When castor and black soybean 2, which had high resistance to pests, were intercropped, the number of aphids per plant decreased by 32.4% compared with single cropping. When castor and the two black soybean cultivars were intercropped with the same row arrangement (2:4), the effect on the prevention and control of A. glycines and L. glycinivorella was better. In another study, a significant difference in the weight of maize earworm larvae, which were allowed to feed on different genotypes of fodder soybean, was observed, indicating the positive effect of fodder soybean in controlling the earworm larvae in maize (Javaid et al., 2006).

Lawn Care

Lawn Care

The Secret of A Great Lawn Without Needing a Professional You Can Do It And I Can Show You How! A Great Looking Lawn Doesnt Have To Cost Hundreds Of Dollars Or Require The Use Of A Professional Lawn Care Service. All You Need Is This Incredible Book!

Get My Free Ebook


Post a comment