Evaluation of food sprays and relay strip crops for enhancing biological control of bollworms and cotton aphids in cotton

Autor:	J. E. Slosser, Megha N. Parajulee, D. G. Bordovsky
Rok vydání:	2000
Předmět:	Strip farming Biology engineering.material biology.organism_classification Fiber crop Horticulture Vicia villosa Bollworm Agronomy Insect Science Aphis gossypii engineering Helicoverpa zea Agronomy and Crop Science Sweet sorghum Malvaceae
Zdroj:	International Journal of Pest Management. 46:267-275
ISSN:	1366-5863 0967-0874
DOI:	10.1080/09670870050206037
Popis:	Studies were conducted at the Texas Agricultural Experiment Station research farms located at Munday (1996 test) and Chillicothe (1997 test) to evaluate relay strip crops in combination with a food spray to enhance biological control of bollworms, Helicoverpa zea (Boddie), and cotton aphids, Aphis gossypii Glover, in cotton. The relay crops included fall plantings of hairy vetch, Vicia villosa Roth, and canola, Brassica napus L., and a spring planting of grain sorghum, Sorghum bicolor L. Cotton, Gossypium hirsutum L., was planted between the relay crops or was isolated from the relay crops. Treatments within the two cotton systems included an untreated check plot, a plot sprayed with sugar+yeast (food spray) during summer to attract and hold predator insects, a plot sprayed with biological ('soft') insecticides for bollworm and cotton aphid control (Bacillus thuringiensis and pymetrozine, respectively), and a plot sprayed with harsh insecticides for bollworm and cotton aphid control (zeta cypermethrin and...
Databáze:	OpenAIRE
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