Open AccessCorn Rootworm Larval Control, 1994
Author(s) -
Arthur A. Hower,
Sandra D. Alexander
Publication year - 1995
Publication title -
arthropod management tests
Language(s) - English
Resource type - Journals
eISSN - 2155-9856
pISSN - 2155-9848
DOI - 10.1093/amt/20.1.170
Subject(s) - tillage , biology , agricultural experiment station , agronomy , yield (engineering) , mathematics , horticulture , agriculture , ecology , physics , thermodynamics
Two insecticide efficacy studies for control against mixed populations of NCR (32% Experiment I and 42% Experiment II) and WCR were conducted at the Russell E. Larson Agricultural Research Center at Rock Springs, Centre County, PA. The experiments were conducted on separate fields approximately 1 mile apart. Corn was planted no-till on 10 May (Experiment I) and 11 May (Experiment II) using a John Deere Max-Emerge 2 row planter with 30-inch row spacing. There were 3 treatments in each experiment which were planted in conventional tillage. Insecticides were applied to 5 × 40 ft plots in a RCBD with 4 replications per treatment. Plants were counted on 1 Jun (Experiment I) and 8 Jun (Experiment II). Root damage ratings were evaluated 26 Jul (Experiment I) and 29 Jul (Experiment II) using the Iowa 1 to 6 system. Yield was determined by mechanically harvesting each plot for shelled corn on 11 Nov (Experiment I) and 8 Nov (Experiment II). Percent moisture was determined for each plot and adjusted to 15.5%.
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