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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #148026
Title: EVALUATION OF TWO NEMATICIDES AND TIMING OF APPLICATION TO MANAGE PEANUT ROOT-KNOT NEMATODE IN GEORGIA

Author
item KEMERAIT JR, R - UNIVERSITY OF GEORGIA
item Davis, Richard
item BREWER, C - UNIVERSITY OF GEORGIA

Submitted to: American Peanut Research and Education Society Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 7/1/2003
Publication Date: 10/1/2003
Citation: Kermerait, R.C., Davis, R.F., Brewer, C.L. 2003. Evaluation of two nematicides and timing of application to manage peanut root-knot nematode in Georgia [Abstract]. Proceedings of the American Peanut Research and Education Society. 35:78-79.

Interpretive Summary:

Technical Abstract: Field trials (randomized complete block design, six replications) were conducted at the Southeast Georgia Research and Education Center in Attapulgus, GA in 2001 and 2002 to evaluate the effectiveness of aldicarb (Temik 15G) and ethoprop (Mocap 15G) on management of the peanut root-knot nematode. In 2001, pressure from the peanut root-knot nematode, Meloidogyne arenaria, was light to moderate. In 2002, nematode pressure in the same field was severe (populations reached 1674 root-knot nematodes/100 cc soil in the control plots) and was complicated by Cylindrocladium black rot. In 2001, two trials were conducted side-by-side in the plot area. Efficacies of Temik 15G applied at planting (10 lb/A), at pegging (10 lb/A), or at planting and pegging (10lb/A + 10lb/A) were evaluated. In the second trial, efficacies of at-pegging applications of Temik 15G (10 lb/A) and Mocap 15G (10 lb/A) after both received at-plant applications of Temik 15G (10 lb/A) were compared. The control in the first trial received 5 lb/A Thimet 20G at planting; the control in the second trial received Temik 15G at planting. In 2002, the treatments from the first year were combined into a single trial; the control was treated with 5 lb/A Thimet 20G at planting. In 2001 and 2002, pod galling and yields from plots that received applications of Temik 15G at planting without an application at pegging were not statistically different from the control. In two of three trials, pod galling was significantly lower when Temik 15G was applied at pegging, with or without an at-plant treatment, than when plots were treated with Temik only at planting. At-pegging applications of Mocap 15G after at-plant applications of Temik did not significantly reduce galling or increase yield over at-plant applications of Temik 15G alone. There were trends for increased yields in plots treated with Temik 15G at pegging and at plant + at pegging in all three trials over at-plant applications of Temik alone; however the increases were only statistically significant in one trial in 2001 and in the trial conducted during 2002.