섬유

Performance and Insect Control Cost of Bollgard vs Conventional Varieties in Tennessee.

  • 출판일2000.09
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 228
Field trials comparing the lint yield performance of Bollgard and non-Bollgard cotton varieties determined that Bollgard cotton, averaged across all locations, produced an 85 pound and 17 pound lint yield per acre increase in 1998 and 1999, respectively. Yield differences at individual field sites ranged from -29 pounds to 339 pounds in 1998 and -77 pounds to 132 pounds in 1999. Average insect control cost per acre was $62 to $65 for Bollgard cotton and $46 to $62 for non-Bollgard cotton. Bollgard cotton in the presence of higher bollworm, tobacco budworm, and European corn borer infestations. Conventional varieties performed equal to or better than Bollgard in the absence of these insects or when insecticide treatments were effective. 5 refs.
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