Group Title: Research report (North Florida Research and Education Center (Quincy, Fla.))
Title: Application of temik 15g to peanut at varying lifestage intervals for management of the peanut root-knot nematode
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Permanent Link: http://ufdc.ufl.edu/UF00066142/00001
 Material Information
Title: Application of temik 15g to peanut at varying lifestage intervals for management of the peanut root-knot nematode
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: 1997
 Subjects
Subject: Peanuts -- Florida   ( lcsh )
Nematoda -- Management   ( lcsh )
Genre: non-fiction   ( marcgt )
 Notes
Statement of Responsibility: Jimmy R. Rich, Daniel W. Gorbet, Stacey K. Barber.
General Note: Cover title.
 Record Information
Bibliographic ID: UF00066142
Volume ID: VID00001
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 71198127

Full Text


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IFAS NFREC Research Report 97:6


University of Florida






APPLICATION OF TEMIK 15G TO PEANUT AT VARYING
LIFESTAGE INTERVALS FOR MANAGEMENT OF
THE PEANUT ROOT-KNOT NEMATODE


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


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


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


Marston Science
Library
MAY 2 2 1997









At-pegging Temik treatment on peanut is a part of standard recommendations for

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

been recommended in a 14" inch band at 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 fourth year, was conducted to

determine if Temik treatment later in the season may be more beneficial in longer season cultivars.

MATERIALS AND METHODS

A field trial was conducted on the UF Foundation Seed Farm near Greenwood, Florida in

a Chipola sandy loam soil infested with the peanut root-knot nematode, Meloidogyne arenaria.

The site was planted to peanut in 1994 and cotton in 1995. Preplant populations ofM. arenaria

averaged 45/100 cm3 of soil. Before planting, the plot area was prepared by moldboard plowing

and double discing. Plots were 2 rows (36" wide rows) by 20' long. Treatments were placed in a

randomized complete block design and replicated 6 times.

Initial chemical applications of Temik 15G or Thimet 15G were made at planting of

Southern Runner peanut on May 30, 1996. The chemicals were applied as an 8" wide band over

the open seed furrow with a tractor-mounted Gandy applicator. Postplanting treatments were

applied at 4 different time intervals in a band width of 12-14 inches over the row (Table 1).

Plants were observed for symptoms ofphytotoxicity over the season. Peanuts were dug on

October 24 and combined on October 30. Pods and seed were force air-dried to 10% moisture,

weighed, and yield converted to lbs./A. Soil samples were taken on December 15, and six soil

cores (1" dia.) to 10" deep were collected from each plot and composite. Nematodes were

extracted from a 100 cm3 aliquant of soil from each plot utilizing the centrifugation-sugar flotation

technique and root-knot nematode juveniles counted.









RESULTS AND DISCUSSION

Early to midseason peanut growth was good in all plots, and no phytotoxocity was

observed in any of the treatments. Application of Temik at 28 and 70 days significantly improved

yield compared to the Thimet control. All postplanting Temik treatments numerically increased

yield over the at-planting Temik alone or control by greater than 400 lbs./A. Nematode numbers

were generally inversely related to peanut yield.

Data from this test indicate that postplant applications may be made later than the

normally recommended 35 days after planting and could improve yield when applied up to 70

days after planting and beyond. A 90-day period is required between the last Temik application

and peanut harvest. Thus, since Southern Runner matures in about 160-days, Temik should not be

applied later than 70 days after planting.

CONCLUSION

Data from four years of testing showed differing results concerning postplant application

timing of Temik, however, all postplant Temik treatments showed good yield increases. In

contrast, yield increase from Temik application at planting, only slightly increased peanut yield

over Thimet-treated controls. These tests indicate a greater than 300 lb. yield advantage in

applying Temik postplant.











Table 1. Influence of postplant treatments of Temik 15G on peanut yield and peanut root-knot
nematode numbers in a Jackson County field trial, 1996.



Chemical Days after Yield No. nematodes/
planting2 in lbs./A 10 cm soil


Temik 15G

Temik 15G

Temik 15G

Temik 15G

Temik 15G

Temik 15G

Control (Thimet)


70

28

49

28*

91

0

0


2696 a3

2688 a

2524 ab

2478 ab

2467 ab

1999 b

1951 b


585 c

702 bc

1121 abc

1356 a

634 bc

1132 abc

1206 ab


1 An 8" wide modified infurrow treatment of Temik 15G (10 lbs. formulation/A) was made to all
treatments at planting except the control and 28* day Temik 15G treatment. These two received Thimet
15G (6.7 lbs./A) atplanting.

2 Indicates number of days after planting for Temik 15G (10 lbs./A) application in 14" band over the
plant row.

3 Column means followed by the same letter are not significantly different (P < 0.05) according to
Duncan's multiple range test.


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