Bollworm incidence as affected by sowing date, nitrogen application and plant populanon in upland cotton uri icon


  • Trials were conducted to know the effect of sowing date, nitrogen application and plant population levels on the incidence of bollworms (pink and spotted bollworms) at Cotton Research Station, Sirsa (Haryana) during the crop seasons 1979?80 and 1980?81. Incidence of pink boll-worm on flowers and spotted bollworm on bolls was more in early sown crop than the normal and late sown crop. Late sown crop recorded highest level of pink bollworm incidence on bolls and number of diapausing larvae. Application of nitrogen resulted in higher incidence of bollworms whereas plant population levels did not influence the bollworm incidence

publication date

  • 1982