Evaluation of potential relay strip crops for predator enhancement in Texas cotton

Autor: Megha N. Parajulee, J. E. Slosser
Rok vydání: 1999
Předmět:
Zdroj: International Journal of Pest Management. 45:275-286
ISSN: 1366-5863
0967-0874
DOI: 10.1080/096708799227680
Popis: A two-year study was conducted at the Texas Agricultural Experiment Station farm at Munday, Texas to evaluate different relay strip crops for predator enhancement in cotton. The study evaluated eight relay strip crop treatments, including three fall crops (fall planted canola, Brassica rapa L., hairy vetch, Vicia villosa Roth, and wheat, Triticum aestivum L.), three spring crops (spring planted canola, forage sorghum, Sorghum bicolor L., and grain sorghum, Sorghum bicolor L.), a relay crop system comprised of canola planted in the fall and grain sorghum in the spring, and cotton planted adjacent to cotton as control. Each treatment consisted of four rows of the relay crop planted on both sides of an 8-row 23-m cotton plot, replicated three times. Predator abundance was monitored weekly in strip crops and cotton throughout the crop season by taking a 15 s D-vac sample from each plot. Cotton aphids, Aphis gossypii Glover, and bollworm- budworms, Helicoverpa zea (Boddie) and Heliothis virescens (F.) combined...
Databáze: OpenAIRE