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Group Title: IFAS NFREC research report - University of Florida Institute of Food and Agricultural Sciences ; 96.5
Title: Application of nematicides to peanut at varying lifestage intervals for management of the peanut root-knot nematode, 1995
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Permanent Link: http://ufdc.ufl.edu/UF00074369/00001
 Material Information
Title: Application of nematicides to peanut at varying lifestage intervals for management of the peanut root-knot nematode, 1995
Series Title: IFAS NFREC research report
Physical Description: 3 leaves : ; 28 cm.
Language: English
Creator: Rich, J. R ( Jimmy Ray ), 1950-
Barber, Stacey K
Gorbet, Daniel W ( Daniel Wayne ), 1942-
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: Peanuts -- Diseases and pests -- Control -- Florida   ( lcsh )
Nematode diseases of plants -- Control -- Florida   ( lcsh )
Peanuts -- Effect of pesticides on -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
non-fiction   ( marcgt )
 Notes
Statement of Responsibility: Jimmy R. Rich, Stacey K. Barber, Daniel W. Gorbet.
General Note: Cover title.
Funding: Research report (North Florida Research and Education Center (Quincy, Fla.)) ;
 Record Information
Bibliographic ID: UF00074369
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 84741677

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HISTORIC NOTE


The publications in this collection do
not reflect current scientific knowledge
or recommendations. These texts
represent the historic publishing
record of the Institute for Food and
Agricultural Sciences and should be
used only to trace the historic work of
the Institute and its staff. Current IFAS
research may be found on the
Electronic Data Information Source
(EDIS)

site maintained by the Florida
Cooperative Extension Service.






Copyright 2005, Board of Trustees, University
of Florida






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IAR 1 9 1996

University of Florida




Application of Nematicides to Peanut at Varying Lifestage
Intervals for Management of the
Peanut Root-knot Nematode-1995






IFAS NFREC Research Report: 96.5


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


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


Daniel W. Gorbet
University of Florida
3925 Highway 71
Marianna, FL 32466








At-pegging nematicide treatment on peanut is a standard recommendation for

management of the peanut root-knot nematode, Meloidogvne arenaria. Application has

generally been recommended in a 14" band at 28-35 days after planting. While this has

been widely accepted for use in peanut cultivars such as Florunner, little information is

available on longer season cultivars such as Southern Runner. This test, in its third

year, was conducted to determine if nematicide treatment later in the season may be

more beneficial in longer season cultivars.

Materials and Methods

A field trial was conducted on the John King Farm near Greenwood, Florida in

the Chipola sandy loam soil infested with the peanut root-knot nematode, Meloidogvne

arenaria. The site was previously in clean fallow in 1994. Before planting, the plot

area was prepared by moldboard plowing and discing. Plots were 2 rows (36" wide

rows) X 20' long. Treatments were placed in a randomized complete block design and

replicated 6 times.

All materials in the test were granular formulations, and initial chemical

applications were made at-planting of peanut Southern Runner on May 19, 1994 (Table

1). The granular nematicides were applied with two tractor-mounted Gandy applicators

as a modified in-furrow, 8" wide band over the row. Over the top "pegging time"

treatments were applies at 3 different time intervals as a band 12-14" inches wide.

Peanut plants were observed for symptoms of phytotoxicity over the season. Six

soil cores (1" diameter) were taken in the row on November 31 and 5 cores to 10" deep

were taken in each plot and composite. Nematodes were extracted from a 100 cm3

aliquant of soil from each plot utilizing the centrifugation-sugar flotation technique and









second-stage juveniles were counted. Peanuts were mechanically harvested November

19. They were force air-dried to 10% moisture, weighed, and yield converted to lbs./A.

Results and Discussion

All nematicide treatments significantly increased yield over the control. Highest

numerical yields were obtained the combinations of Temik 15 treatments at planting and

"at-pegging". Both the single applications of 10 lbs. of Temik 15 G, either at-planting

or at-pegging significantly improved yields over the control. Nematode numbers were

quite variable but generally were higher in the higher yielding treatments.

Yield of peanut in this test was low, reflecting the high population densities

present in the field and the sandy soil type. While the materials improved peanut yield,

rotation is needed in this field to reduce nematode populations and allow these

nematicides to perform better.









Table 1. Effect of Temik 15 G at various application intervals and Nemacur 15 G on

yield and pod quality of peanut and number of Meloidogvne arenaria, 1995.

Formlation Days after Yield in No. Nematodes/
Treatment in lbs./A planting lbs./A 100 cm3 soil
Temik 15 G 10 + 10 49 1626a' 841 ab
Temik 15 G 10 + 10 28 1577a 428 b
Temik 15 G 10 + 10 91 1549a 1004 a
Temik 15 G 10 + 10 0 1537a 542 ab
Temik 15 G 0 + 10 28 1315a 974 a
Nemacur 15 G 13.3 + 0 0 1304a 615 ab
Thimet 15 G 6.7+ 0 0 911b 503 b

1Indicates number of days after planting for 12-14" band "at-pegging" treatments.

2Column means followed by the same letter are not different (P < 0.05) according to

Duncan's Multiple Range Test.




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