Open AccessCorn Rootworm Larval Control, 1993
Author(s) -
Arthur A. Hower,
Sandra D. Alexander
Publication year - 1994
Publication title -
arthropod management tests
Language(s) - English
Resource type - Journals
eISSN - 2155-9856
pISSN - 2155-9848
DOI - 10.1093/amt/19.1.196
Subject(s) - biology , agronomy , agricultural experiment station , yield (engineering) , larva , grain yield , mathematics , agriculture , botany , ecology , physics , thermodynamics
Control of mixed populations of NCR and WCR was determined in 2 insecticide efficacy studies. Both experiments were conducted on separate fields approximately 1 mile apart at the Russell E. Larson Agricultural Research Center at Rock Springs, Centre County, PA. Corn was planted no-till on 18 May (in both experiments) using a John Deere Max-Emerge 2 row planter with 30-inch row spacing. Insecticides were applied to 5 × 40 ft plots in RCBD with 4 replications per treatment. Plants were counted on 7 Jun (Experiment 1) and 24 Jun (Experiment 2). Root damage ratings were evaluated 29 Jul (Experiment 1) and 30 Jul (Experiment 2) using the Iowa 1 to 6 system. Yield was determined by mechanically harvesting each plot for shelled corn on 18 Nov (in both experiments). Percent moisture was determined for each plot and adjusted to 15.5%.
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