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Group Title: IFAS NFREC Quincy Research report - University of Florida Institute of Food and Agricultural Sciences ; 92-14
Title: Influence of application rates and timing of three non-fumigant nematicides for management of Meloidogyne arenaria in peanut, 1992
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Permanent Link: http://ufdc.ufl.edu/UF00074351/00001
 Material Information
Title: Influence of application rates and timing of three non-fumigant nematicides for management of Meloidogyne arenaria in peanut, 1992
Series Title: IFAS NFREC Quincy Research report
Physical Description: 3 p. : ; 28 cm.
Language: English
Creator: Rich, J. R ( Jimmy Ray ), 1950-
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: 1992
 Subjects
Subject: Peanuts -- Diseases and pests -- Control -- Florida   ( lcsh )
Meloidogyne arenaria -- 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, Daniel W. Gorbet.
General Note: Cover title.
Funding: Research report (North Florida Research and Education Center (Quincy, Fla.)) ;
 Record Information
Bibliographic ID: UF00074351
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 85532422

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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














Marston Sciencp

APR 5 1993

University of Florida




INFLUENCE OF APPLICATION RATES
AND TIMING OF THREE NON-FUMIGANT
NEMATICIDES FOR MANAGEMENT OF
MELOIDOGYNE ARENARIA IN PEANUT 1992

IFAS NFREC Quincy.Research Report 92-14


Jimmy R. Rich
NFREC, Quincy
Rt. 3 Box 4370
Quincy, Florida 32351


Daniel W. Gorbet
NFREC, Marianna
Rt. Box 376
Marianna, Florida 32446


qa-)








Plant parasitic nematodes are one of the most limiting factors

in field crop production in north Florida. As part of the

nematology research program at IFAS NFREC, Quincy, a test was

conducted with 'Southern Runner' peanut utilizing different

application methods and rates of nematicides from Rh6ne Poulenc Ag

Company.

Materials and Methods

A field trial was conducted at the IFAS North Florida Research

and Education Center, Marianna, in a Chipola loamy sand infested

with the peanut root-knot nematode, Meliodogyne arenaria. Preplant

populations of M. arenaria in this soil was less than 1/100 cm3 as

a result of fallowing the previous year. Prior to planting, the

land was prepared by moldboard plowing and double discing. Plots

were 2 rows wide (36" wide rows) by 25' long. Treatments were

placed in a randomized complete block design and replicated six

times.

All materials utilized in this test were granular formulations

and initial applications were made at-planting on June 5, 1992

(Table 1). The materials were applied with two tractor-mounted

Gandy applicators. Mid-season/pegging time treatments were applied

similarly on August 12.

Plants were observed for symptoms of phytotoxicity at-planting

and mid-season after chemical treatments. Soil samples were taken

in-row on August 25 and on November 16. Five soil cores (1" dia)

to 10" deep were taken in each plot and composite. Nematodes were

extracted from soil utilizing the centrifugation-sugar flotation

technique and quantitated to number of juvenilles/100 cm3 soil.








Peanuts were dug on November 2and picked with a long picker on

November 9. The peanuts from each were force air-dried to 10%

moisture and weighed. Plot yields were converted to yield in

lbs/A.
Results and Discussion

Peanut growth was good in all plots, and no phytotoxicity was

observed in any of the treatments. Three treatments significantly

increased peanut yields over the control and" all nematicide

treatments numerically increased peanut yield (Table 1). The

peanut root-knot nematode numbers at mid-season were low to

moderate but increased rapidly to at-harvest populations. No

significant differences, however, were observed in nematode numbers

between the nematicide treatments and the control.

In general, those treatments which included a mid-season band

produced yields higher than the single at-planting treatments.

These data support those of others concerning the importance of a

mid-season/at-pegging nematicide treatment to increase peanut

yields. Further work on mid-season/at-pegging treatment timing

would be useful to optimize control of the peanut root-knot

nematode.










Table 1. Peanut yields and nematode numbers as influenced by nematicide treatments in a
field trial at Marianna, Florida in 1992.


No. M. arenaria2
Rate in Application Yield
Treatment Ibs. a.i/A Method1 in lbs./A Mid-Season At-Harvest


Temik 15G + 1.5 MDIF 3539 a3 63 3035
Temik 15G 1.5 MSB
Temik 15G + 2.0 MDIF 3417 a 33 2861
Mocap 15G 2.0 MSB
Temik 15G + 2.0 MDIF 3277 a 98 2931
Mocap 15G 3.0 MSB
Temik 15G + 2.0 MDIF 3188 ab 136 2676
Temik 15G 1.0 MSB
Nemacur 15G 2.5 Band 3147 ab 86 1802
Temik 15G + 2.5 Band 3126 ab 73 2531
Mocap 15G 2.5 MSB
Temik 15G 2.5 Band 3061 ab 41 2847
Temik 15G 2.0 In-furrow 2945 ab 61 3534
Control --- --- 2468 b 185 2599


1 MDIF represents modified in-furrow treatment with 4" band application over seed furrow at
planting. Band represents a band width of 10" at-planting. MSB indicates a mid-season
band of 10" wide over the peanut foliage 81 days after planting.

2 Mean number of nematodes per 100 cm3 soil.

3 Column means followed by the same letters are not significantly different (P > 0.05)
according to Duncan's Multiple Range Test.


I




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