ACTA AGRICULTURAE BOREALI-SINICA ›› 1992, Vol. 7 ›› Issue (3): 81-87. doi: 10.3321/j.issn:1000-7091.1992.03.016

Special Issue: Corn Cotton

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Studies on the Damage and the Control Index of Asiatic Corn Borer Ostrinia furnacalis to Cotton

Gao Zongren1, Zhang Dian2   

  1. 1. Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002
    2. Zhang Dian Xinxiang Institute of Agricultural Sciences, Xinxiang, 453003
  • Received:1990-05-16 Published:1992-09-28

Abstract: The damage and the control index of siatic corn borer in cotton fields were investigated during 1985-1988. The results showed that after the growing point and main stem of the cotton plant were injured by the corn borer,the yield could be reduced by 28.26%to 88,70%for the plant, However, the practical loss was only from 12.61%to 52,17%resulting from the self-regulation and mass compensation of the plant, According to the relationships between the percentage of infested plants and the yield loss, and between the percentage of the infected plants and the nu tuber of the egg masses/100 plants, the control indices (4.0, 5.5, 6.2 egg masses/100 plants) were determined for the different yields of cotton 0100, 75, 50kg/mu).

Key words: Cotton, Asiatic corn borer, Control index

Cite this article

Gao Zongren, Zhang Dian. Studies on the Damage and the Control Index of Asiatic Corn Borer Ostrinia furnacalis to Cotton[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1992, 7(3): 81-87. doi: 10.3321/j.issn:1000-7091.1992.03.016.

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