{"title":"Control of Bollworm/Budworm Complex in Mississippi Cotton, Trial I, 1992","authors":"B. Layton, Michael S. Howell, Bob Head","doi":"10.1093/iat/18.1.237","DOIUrl":null,"url":null,"abstract":"\n Treatments were applied on 20 Jul using a CO2 powered backpack sprayer calibrated to deliver 9.9 gal of finished spray per acre through 8001 nozzle tips at 40 psi. The plots, which were located in Warren County, were 8 rows wide (38 inch on center) by 50 ft long, arranged in a randomized complete block with 4 replications. Counts were made 3 and 7 DAT by searching the terminal area of 25 plants per plot for larvae; 4 randomly chosen squares from each plant were examined for damage determination. A total of 0.2 inches of rain fell on the plots approximately 60 hr posttreatment. Pretreatment infestation level within the test area was 18% eggs and 26% small larvae. Of 25 larvae collected from check plots and adjacent untreated areas at 3 DAT, 92% were tobacco budworms.","PeriodicalId":13691,"journal":{"name":"Insecticide and Acaricide Tests","volume":"65 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"1993-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Insecticide and Acaricide Tests","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1093/iat/18.1.237","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Treatments were applied on 20 Jul using a CO2 powered backpack sprayer calibrated to deliver 9.9 gal of finished spray per acre through 8001 nozzle tips at 40 psi. The plots, which were located in Warren County, were 8 rows wide (38 inch on center) by 50 ft long, arranged in a randomized complete block with 4 replications. Counts were made 3 and 7 DAT by searching the terminal area of 25 plants per plot for larvae; 4 randomly chosen squares from each plant were examined for damage determination. A total of 0.2 inches of rain fell on the plots approximately 60 hr posttreatment. Pretreatment infestation level within the test area was 18% eggs and 26% small larvae. Of 25 larvae collected from check plots and adjacent untreated areas at 3 DAT, 92% were tobacco budworms.
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