Open AccessPecan Phylloxera Control, 1983
Author(s) -
Michael Hall,
Richard Shelton
Publication year - 1984
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/9.1.94
Subject(s) - sprayer , phylloxera , sampling (signal processing) , randomized block design , block (permutation group theory) , gall , horticulture , environmental science , mathematics , hydrology (agriculture) , forestry , toxicology , biology , geology , geography , botany , agronomy , rootstock , engineering , geotechnical engineering , geometry , electrical engineering , filter (signal processing)
The study was conducted on mature Schley pecan trees approximately 40 ft. tall, located in south Bossier City, Bossier Parish, La. Test plots were set up in a randomized block design composed of three blocks, with one tree per treatment, per block. There were a total of five treatments. Insecticide applications were made on 29 Mar. using an FMC 957 speed sprayer, delivering approximately 30 gal of finished material per tree. Sampling was conducted on 17 May, following gall formation. Between the time of insecticide application and sampling a total of 4.3 in. of rainfall occurred. Twenty-four h after treatments were made .08 inches of rainfall was recorded. Sampling consisted of counting the number of phylloxera galls on each of 100 terminals per tree. Data were subjected to analysis of variance.
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