Group Title: Research report (North Florida Research and Education Center (Quincy, Fla.))
Title: Evaluation of the effectiveness of an experimental nematicide from agridyne technologies, azatin ec, for management of meloidogyne arenaria in peanut.
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Permanent Link: http://ufdc.ufl.edu/UF00066135/00001
 Material Information
Title: Evaluation of the effectiveness of an experimental nematicide from agridyne technologies, azatin ec, for management of meloidogyne arenaria in peanut.
Series Title: Research report (North Florida Research and Education Center (Quincy, Fla.))
Physical Description: 4 leaves : ; 28 cm.
Language: English
Creator: Rich, J. R ( Jimmy Ray ), 1950-
Gorbet, Daniel W ( Daniel Wayne ), 1942-
Barber, Stacey K
North Florida Research and Education Center (Quincy, Fla.)
Publisher: North Florida Research and Education Center
Place of Publication: Quincy Fla
Publication Date: 1996
 Subjects
Subject: Meloidogyne arenaria   ( lcsh )
Nematocides   ( lcsh )
Peanuts -- Effect of pesticides on   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: by Jimmy R. Rich, Daniel Gorbet, and Stacey K Barber.
General Note: Cover title.
 Record Information
Bibliographic ID: UF00066135
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 71188669

Full Text
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MAR 1 9 1996

University of Florida






EVALUATION OF THE EFFECTIVENESS OF AN EXPERIMENTAL NEMATICIDE
FROM AGRIDYNE TECHNOLOGIES, AZATIN EC, FOR MANAGEMENT OF
MELOIDOGYNE ARENARIA IN PEANUT



NFREC Research Report: 96.6


Jimmy R. Rich
University of Florida
Route 3, Box 4370
Quincy, FL 32351


Daniel Gorbet
University of Florida
3825 Highway 71
Marianna, FL 32446


Stacey K. Barber
University of Florida
Route 3, Box 4370
Quincy, FL 32351









New Nematicide 1995

The trial reported herein was conducted to evaluate the effectiveness of Azatin EC,

from Agridyne Technologies, to control Meloidogyne arenaria in peanut.

Materials and Methods

A field trial was conducted in a Chipola sandy loam soil infested with the peanut

root-knot nematode, Meloidogyne arenaria. The site was located on the John King farm

near Greenwood, Florida and was cropped in peanut in 1993 and clean-fallowed in 1994.

The field was prepared by moldboard plowing and discing prior to treatment applications.

Application of nematicides and planting of peanut "Southern Runner" was made on May

22, 1995. Azatin EC was applied in the equivalent of 50 gallons of water per acre in a 18"

band with a PTO driven spray unit prior to planting. Temik 15 G was applied with a

Gandy granular applicator in a modified infurrow 8" band treatment at planting. Plot

rows were 36" wide and 2 rows x 20' long. Treatments were placed in a randomized

complete block design and replicated 6 times.

Plants were observed for phytotoxicity early in the season and mechanically

harvested on October 18, 154 days after planting. Peanuts from individual plots were force

air-dried to 10% moisture, weights recorded and converted to lbs./A. A visual pod index

rating was made on a 1-5 scale with 5 representing the highest degree of pod browning and

galling. Five soil cores (1" diam.) were taken from each plot on November 11 and

composite. Nematodes from 100 cm3 subsamples from each plot were extracted by a

modified centrifugation-floatation technique and counted.

Results

No phytotoxicity was observed with the Azatin EC or Temik 15 G treatments.









Temik 15 G produced highest yield and yields were significantly higher than the control.

Yield of the Azatin EC treatment was not significantly different from the control or the

Temik 15 G. No significant differences in pod index ratings or nematode numbers were

observed among treatments. The pod index, however, was moderately high in all

treatments.

Discussion

Peanut yield was low due to alternating wet-dry conditions and very high

temperatures during the growing season. Additionally, a high and uniform population of

the peanut root-knot nematode was present at the site. However, both the Temik 15 G and

Azatin EC improved yield of peanut over the control. These data indicate the potential use

of Azatin EC for nematode management in peanut production. It is suggested that both

an at-planting and pegging-time treatment be tested with Azatin EC to further enhance its

nematicidal activity and increase yield of peanut. These applications are standard with

Temik 15 G in Florida and have shown to be beneficial due to long growing season of this

crop (120 160 days). Higher rates of Azatin EC application also could be considered.









Table 1. Influence of two nematicides on yield, pod quality and number of Meloidogyne

arenaria in a peanut field trial, 1995.


Treatment

Temik 15 G

Azatin EC

Thimet 15 G

LSD (P < 0.05)


Rate
a.i./A

20 lbs.

100 lbs.


Application
Method

8" Band

18" Band


Yield
lbs./A

2190

1849

1636

440


Pod
Index

2.8

2.8

2.8

1.2


No. Nematodes/
100 cm3 soil

1051

1051

878

244


STemik 15 G was applied as a modified in-furrow band 8" wide while the Azatin EC was
applied prior to planting in 50 gal. of water/A.




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