Cotton Bollworm in the Philippines a Review[Sample]
The cotton bollworm, Helicoverpa is one of the most serious pests in cotton. Helicoverpa can reduce seedcotton yield by 37 to 92% and cotton farmers spend 35 to 47% fo their cash cost to control it. There have been deliberate attempts to develop control strastegies towards effective mangement of thi...
|发表在:||The Philippine Journal of Science Vol. 126, no. 1-4 (Jan. 1997 - Dec. 1997), 63-85p.|