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ARS Home » Southeast Area » Tifton, Georgia » Crop Protection and Management Research » Research » Publications at this Location » Publication #144340
Title: EVALUATION OF NEMATICIDES TO REDUCE LOSSES TO ROOT-KNOT NEMATODE IN PEANUT.

Author
item KEMERAIT, R - UNIVERSITY OF GEORGIA
item Davis, Richard

Submitted to: Fungicide and Nematocide Tests
Publication Type: Abstract Only
Publication Acceptance Date: 3/31/2003
Publication Date: 8/1/2003
Citation: Kemerait, R.C., Davis, R.F. 2003. Evaluation of nematicides to reduce losses to root-knot nematode in peanut [abstract]. Fungicide and Nematicide Tests. 58 Report No. NO14.

Interpretive Summary:

Technical Abstract: A trial was established in a field with a very high nematode damage potential in Attapulgus, GA to compare mid-season applications of Temik and Mocap and determine if either is beneficial. Substituting Mocap for the mid-season application of Temik would be beneficial to some farmers because Temik cannot be applied within 90 days of harvest, but Mocap can. The soil type in the plot area was a Norfolk loamy sand, pH 6.4. Peanut (>Georgia Green=) was planted on 15 May on 36-inch rows. The experimental design was a randomized complete block with six replications. Plots were four-rows wide by 50 feet in length. Mid-season applications for Temik 15G (10 lb/A) and Mocap (10 lb/A) were made at pegging time on 9 Jul. Plots were managed identically throughout the study for irrigation, weeds, disease, and fertility. Soil was sampled for nematodes on 15 May and 10 Oct. The peanut plots were inverted on 1 Oct and harvested on 3 Oct. Damage from nematodes in this field was evident from visible differences in growth among treatments and from galls that formed in abundance on the pods, pegs, and root systems. Cylindrocladium black rot, caused by the fungus Cylindrocladium parasiticum, was present throughout the study and appeared most damaging in plots with severe damage from root-knot nematodes. The mid-season application of Temik 15G increased yield by 130% and reduced pod galling, but the mid-season applications of Mocap did not have an effect (0% yield increase) and would not be beneficial.