Group Title: Research report (North Florida Research and Education Center (Quincy, Fla.))
Title: Influence of planting date and variety on damage due to meloidogyne arenaria in peanut
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Permanent Link: http://ufdc.ufl.edu/UF00066123/00001
 Material Information
Title: Influence of planting date and variety on damage due to meloidogyne arenaria in peanut
Series Title: Research report (North Florida Research and Education Center (Quincy, Fla.))
Physical Description: 5 leaves : ; 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: 1994
 Subjects
Subject: Peanuts -- Florida   ( lcsh )
Meloidogyne arenaria   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: Jimmy R. Rich, Daniel W. Gorbet.
General Note: Cover title.
 Record Information
Bibliographic ID: UF00066123
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 71187824

Full Text




















INFLUENCE OF PLANTING DATE AND VARIETY ON DAMAGE DUE TO
MELOIDOGYNE ARENARIA IN PEANUT







IFAS NFREC Research Report 94:8


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


Daniel W. Gorbet
University of Florida
Route 3, Box 376
Marianna, FL 32446


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INTRODUCTION

The root-knot nematode, Meloidoqyne arenaria, is one of the

most serious soilborne pests of peanut in North Florida. Crop

rotation and nematicides are major management tools which reduce

but do not prevent losses from this pest. Other management

techniques need to be developed to further reduce nematode

populations in peanut. Studies in other crops have indicated yield

benefits by altering planting dates and utilizing shorter season

varieties. The trial reported herein was conducted to determine

the effect of three planting dates and two varieties on peanut

yield loss caused by Meloidoqyne arenaria.

MATERIALS AND METHODS

A field trial was conducted on a Chipola loamy sand soil at

S the North Florida Research and Education Center, Marianna in 1993.

The field was previously planted to peanut in 1992, and contained

an average of 297 juiv/tes on May 25, 1993. The site was

moldboard plowed and double-disced in late March. Treatments in

the test included three planting dates (April 14, May 4, and May

24), two peanut varieties, (Florunner and Marc I), and a nematicide

(with or without Temik). Varieties served as the main plots and the

nematicide treatments (Temik VS none) were subplots within each

planting date with three replications at each planting. Temik 15G

application was made at-planting in a 12-14" band over the row at

the rate of 10 lbs. formulation/acre. Subplots were two rows (36"

wide) by 20' long. Standard cultural practices were utilized over

the season and the two peanut varieties were harvested according to

S average days and visual indication of maturity.









After harvest, in-shell peanuts were force air-dried to 10%

moisture, weighed and yield convert to lbs./A. Nematode samples

were taken at harvest by removing five soil cores (1" diam) to a

depth of 10" in each plot. Samples from individual plots were

composite and 100 cm3 soil extracted by the centrifugation, sugar-

flotation technique.

RESULTS

Temik treatment significantly improved peanut yield at each of

the three planting dates in both peanut varieties (Table 1). No

significant yield differences were found between the Marc I and

Florunner variety at any planting date. The % yield loss to M.

arenaria was greatest at the May 4 planting date in the Marc I

variety and at the April 14 date with Florunner (Table 2). Average

number of nematodes generally increased at the later planting dates

while % yield loss decreased.

COMMENTS

The design of this test did not allow direct comparisons of

differences among planting dates. Percentage yield loss and total

plant yield, however, suggested later planting dates may be useful

in reducing nematode losses. A more detailed test with an even

later planting date is needed before any firm conclusions can be

made.










Table 1. Influence of Temik 15G application and planting date

on yield in' two peanut varieties in soil infested

with Meloidoqyne arenaria, 1993.
Variety and

Planting Date Temik (+)1,2 Temik (-) Average

Marc I

April 14 1676 1279 1478

May 4 2807 1759 2283

May 24 2281 1721 1997

Average 2255 1583 1919

Florunner

April 14 1506 875 1191

May 4 2372 1548 1960

May 24 2542 2222 2382

Average 2140 1548 1844


1 Temik 15G application was made in a

the rate of 10 lbs. formulation/A.


12-14" band at-planting at


2 All Temik treatments significantly improved yield over the non-

treated plots.











Table 2. Percentage yield loss and number of nematodes in two

peanut varieties infected with Meloidoqyne arenaria,

1993.

Variety and No. Nematodes/

Planting Date % Yield Loss1 100 cm3 Soil

Marc I

April 14 32 594

May 4 60 799

May 24 34 831

Average 42 741

Florunner

April 14 73 675

May 4 54 464

May 24 15 1026

Average 47 722


1 Yield loss calculated as the percentage difference in yield with

and without application of Temik 15G at 10 lbs./A at-planting.


. I



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