scholarly journals Soil Insecticide Efficacy Trials for Managing Corn Rootworms Using Planting Time Applications in South Dakota, 1995

1996 ◽  
Vol 21 (1) ◽  
pp. 211-212
Author(s):  
M. A. Boetel ◽  
B. W. Fuller ◽  
D. J. Thompson
Keyword(s):  
South Dakota ◽  
Planting Time ◽  
Efficacy Trials ◽  
Corn Rootworms ◽  
Insecticide Efficacy

scholarly journals Cultivation and Planting-Time Insecticide Treatments for Control of Corn Rootworms in South Dakota, 1997

1998 ◽  
Vol 23 (1) ◽  
pp. 196-197
Author(s):  
B. W. Fuller ◽  
M. A. Boetel
Keyword(s):  
South Dakota ◽  
Feeding Damage ◽  
Planting Time ◽  
Corn Rootworms ◽  
Insecticide Efficacy ◽  
Scale Data

Abstract Cornfields located near New Holland and Garretson in central and eastern South Dakota, respectively, were chosen for this study. The experiment was conducted to evaluate insecticide efficacy using ground-driven Noble metering and electronic Smartbox metering units with band or in-furrow insecticide placement methods for control of northern and/or western com rootworm larvae. Treatment plots (15.2-m-long rows spaced 0.96 m apart) were arranged in a RCB design with four replications. Noble and Smartbox metering units were calibrated on the planter prior to insecticide applications. Banded treatments were applied in an 18-cm swath in front of the furrow-closing wheels, and incorporated by the wheels and drag chains. In-furrow applications consisted of directing granules immediately between double-disk furrow openers. Pioneer IR-3751 (100-day) com seed was planted at approximately 23,000 kernels per acre at each location. Five roots per replicate were dug, washed, examined for feeding damage, and rated using the Iowa 1 to 6 scale. Data were analyzed with the ANOVA procedure and means were compared using LSD.

scholarly journals INSECTICIDE EFFICACY TRIALS FOR REDNECKED CANE BORER ON BLACKBERRY, 2002

2003 ◽  
Vol 28 (1) ◽  
Author(s):  
Donn T. Johnson ◽  
Barb A. Lewis
Keyword(s):  
Efficacy Trials ◽  
Insecticide Efficacy

scholarly journals Evaluation of the Fermentation Byproduct Spinosad and Conventional Insecticide Treatments for Controlling Sunflower Beetle Larvae, 1996

1997 ◽  
Vol 22 (1) ◽  
pp. 324-324
Author(s):  
M. A. Boetel ◽  
B. W. Fuller ◽  
R. J. Braun
Keyword(s):  
South Dakota ◽  
Linear Models ◽  
Test Area ◽  
Individual Treatment ◽  
North Central ◽  
General Linear Models ◽  
Insecticide Efficacy ◽  
Whole Plant ◽  
Spray Volume ◽  
Central South

Abstract A commercial sunflower field near Mina, in north-central South Dakota, was selected foi our trial of several insecticide treatments at standard and reduced rates for management of SB larvae. The experiment was arranged in a RCBD with 4 replications, and individual treatment plots were 25 ft long by 10 rows (38 inch spacing) wide. In addition, each plot was bordered by two buffer rows to prevent drift. Pre-application evaluations were carried out using whole-plant visual counts of the number of live SB larvae per plant. Twenty plants were examined from each treatment plot and these counts indicated an average of 11 SB larvae per plant within the test area. Treatments were applied on 11 Ju’ using a CO2-propelled backpack sprayer system with a hand-held 6.7-ft long boom. The boom was equipped with 4 TeeJet 8001 nozzles spaced 20 inches apart, and was calibrated to deliver a spray volume of 15 gpa while traveling at 3 mph. Insecticide efficacy was evaluated at 6 DAT using the same count ing technique and number of samples described for pre-application sampling. Data were analyzed with SAS’ s General Linear Models procedure and means were compared using DMRT.

scholarly journals INSECTICIDE EFFICACY TRIALS FOR RASPBERRY CROWN BORER ON BLACKBERRY,2002

2003 ◽  
Vol 28 (1) ◽  
Author(s):  
Donn T. Johnson ◽  
Barb A. Lewis
Keyword(s):  
Efficacy Trials ◽  
Insecticide Efficacy

scholarly journals Evaluation of Planting-Time Soil Insecticide Applications for Controlling Corn Rootworm Larvae in South Dakota, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 167-167
Author(s):  
B. W. Fuller ◽  
M. A. Boetel ◽  
M. A. Catangui ◽  
J. M. Jenson ◽  
D. J. Thompson ◽  
...  
Keyword(s):  
Experimental Design ◽  
South Dakota ◽  
Linear Models ◽  
Delivery Systems ◽  
Individual Treatment ◽  
Corn Rootworm ◽  
Corn Seed ◽  
Efficacy Trials ◽  
Root Injury ◽  
Design For All

Abstract Efficacy trials were conducted at 5 locations (Aurora, Bruce, Cavour, Delmont, and Garretson) in SD. Individual treatment plots consisted of single rows, 12.2 m to 15.2 m in length, and spaced 96.5 cm apart. Experimental design for all studies was a RCB with 4 replications. Granular insecticide formulations were applied with modified Noble metering units mounted on a specially-adapted Kinze 4-row corn planter. Metering units were ground-driven, and all units were calibrated on the planter. Liquid insecticides were applied using CO2-powered delivery systems individually mounted on each row of the planter. Each system was calibrated to deliver 20 gpa. Banded insecticide treatments (granular or liquid) were applied in an 18-cm swath over the open seed furrow (T-band) in front of the furrow-closing wheels, and were incorporated by the wheels and drag chains. Infurrow treatments were placed directly between double-disk furrow openers and into the open seed furrow. Pioneer IR-3751 (100-day) corn seed was planted at a rate of 23,000 kernels per acre at all study locations. Five roots per replication were dug, washed, and rated using the Iowa 1 to 6 scale to measure rootworm larval damage. Root injury ratings were recorded and analyzed using SAS’s General Linear Models procedure, and DMRT was used to compare treatment means.

LEAFFOOTED BUG INSECTICIDE EFFICACY TRIALS, 2013

2014 ◽  
Vol 39 (1) ◽  
Author(s):  
Elizabeth E. Grafton-Cardwell ◽  
Sara J. Scott
Keyword(s):  
Efficacy Trials ◽  
Insecticide Efficacy

scholarly journals Planting-Time Insecticide Applications to Control Corn Rootworm Larvae in South Dakota, 1992

1994 ◽  
Vol 19 (1) ◽  
pp. 186-186
Author(s):  
M. A. Boetel ◽  
B. W. Fuller ◽  
J. M. Jenson ◽  
W. W. Chambers
Keyword(s):  
South Dakota ◽  
Corn Rootworm ◽  
Planting Time
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