Open AccessSilverspotted Skipper Control in Soybeans, 1979
Author(s) -
John L. Hellman,
Galen P. Dively,
William R. Curtis,
Lee Venables
Publication year - 1980
Publication title -
insecticide and acaricide tests
Language(s) - English
Resource type - Journals
ISSN - 0276-3656
DOI - 10.1093/iat/5.1.156
Subject(s) - sprayer , randomized block design , boom , mathematics , row , sample (material) , block (permutation group theory) , control sample , horticulture , zoology , biology , statistics , agronomy , environmental science , computer science , physics , combinatorics , database , food science , environmental engineering , thermodynamics
Soybeans were planted on June 10 in 30 in rows near Salisbury, Wicomico Co., Maryland. Treatment plots were 20 ft × 2 rows arranged in a randomized complete block design with 4 replicates. Precounts averaged 6 larvae per m2. Treatments were applied on Sept 10 with a back-pack hand held CO2 pressure boom sprayer calibrated to deliver 30 gpa at 40 psi. Post treatment larval sample counts were taken on Sept 15. Three random 5 m sample counts were made in each plot.
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