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Florida peanut variety trials, 1993-
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Permanent Link: http://ufdc.ufl.edu/UF00073374/00002
 Material Information
Title: Florida peanut variety trials, 1993-
Series Title: Marianna NFREC research report
Physical Description: v. : ; 28 cm.
Language: English
Creator: North Florida Research and Education Center (Marianna, Fla.)
Publisher: University of Florida, Institute of Food and Agricultural Sciences.
Place of Publication: Marianna Fla
Creation Date: 1993
Frequency: annual
regular
 Subjects
Subjects / Keywords: Peanuts -- Varieties -- Field experiments -- Periodicals -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
serial   ( sobekcm )
 Notes
General Note: Description based on: 1996; title from caption.
General Note: Latest issue consulted: 1997.
 Record Information
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 76789206
lccn - 2006229106
System ID: UF00073374:00002

Table of Contents
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Full Text





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 Science


FEB 1 G1998
Marianna NFREC Research Report 98-1

SUniversity of Florida
Florida Peanut Variety Trials 1993-97

D. W. Gorbet1, H. A. Peacock2, E. B. Whitty3,
H. G. Wood3, and F. M. Shokes4


Peanut producers now have numerous varieties or cultivars
from which to choose. It is generally desirable to plant more
than one variety, especially if a grower has more than 100 acres
of peanuts. Many factors need to be considered in making these
choices. Good yields and grades over a range of conditions are
usually the most important considerations. However, other
factors that also are important include maturity, disease
resistance, seed supply, acreage to be planted, irrigation, soil
types, contracts, harvest ease, other crops being grown,
rotations, equipment and labor availability, planting dates,
finances, marketing options, and possibly other factors.

This report provides data from University of Florida variety
trials conducted at Gainesville (Green Acres), Jay, and Marianna
research centers from 1993-97. All tests were grown under
irrigation and managed from optimum production including use of
pesticides to control various pest problems.

Table 1 gives results on pod yields, TSMK (total sound
mature kernels) percentage, maturity and a disease rating for
tests at Marianna (1993-97). Each entry was harvested (dug) at
their apparent optimum maturity stage (i.e., E = 125-130 d; M =
133-139 d; L = 145-155 d). Data for Georgia Green, AT 120, and
AT 108 are for 1995-97, only. Disease ratings are for 1996 and
1997 and on a 1-10 scale, where 1 = no disease and 10 = all dead
or dying plants. The primary diseases present were white mold
(Sclerotiurn rolfsii) and TSWV (tomato spotted wilt virus).
Florida MDR 98, Southern Runner, Georgia Green, Virugard and NC
12C showed the best disease resistance in this test. Data for
Florida MDR 98, SunOleic 97R, Flavor Runner, Virugard, GK 7 Hi
Oleic, and NC 12C are for 1997 crop only. TSWV pressure has been
high at Marianna in recent years and was especially severe in
1997.



IUniversity of Florida, North Florida Research and Education
Center, Marianna, FL 32446.
2University of Florida, West Florida Research and Education
Center, Jay, FL 32565.
University of Florida, Agronomy Department, Gainesville, FL
32611.
University of Florida, North Florida Research and Education
Center, Quincy, FL 32351.







Table 2 provides results from tests at Gainesville (Green
Acres) for 1993-97. Only pod yield results and 1997 percent
total sound mature kernels are provided. The Gainesville Green
Acres site has less TSWV than at Marianna. SunOleic 95R and
other very susceptible varieties do better at this site than at
Marianna because of this lower TSWV pressure.

Table 3 gives results from the Jay test. Fewer entries were
included over the testing period at this location, with data from
1995-97 only. Soils are heavier (loamy) at this site.
Gainesville has the most sandy soil, with Marianna being
intermediate.

Table 4 provides results from disease studies conducted at
Marianna for 1995-96 seasons. Pod yield and disease rating
information are provided on runner and Virginia cultivars. These
studies were conducted as a RCB with three replications. A four-
row plot was used with two rows inoculated with S. rolfsii and
two rows left uninoculated. Plots were harvested at proper
maturity for the indicated variety (E, M, L). Based on disease
ratings taken prior to digging, Southern Runner, Georgia Green,
and NC V11 had the best resistance. Based on pod yields of
inoculated plots, all entries suffered significant damage from S.
rolfsii. Southern Runner, Georgia Green, NC Vll, VA 92R, and NC
9 gave the best results when inoculated.

Florida MDR 98 and Southern Runner have resistance to late
leafspot, white mold, TSWV, and rust. Florida MDR 98 and
Southern Runner are the only cultivars that producers can reduce
fungicide sprays for leafspot without significant damage.
Southern Runner is not a good choice for fields with significant
populations of peanut root knot nematode. Florida MDR 98 is not
as susceptible to root knot nematodes as Southern Runner but
still may not be a good choice for bad nematode fields.

Considering the increasing pressure from tomato spotted wilt
virus, growers probably do not need to plant peanuts before the
last week of April and need to try to finish by mid-May. Growers
should plant 5-7 seed per foot of row to insure good stands,
which helps manage TSWV. Choosing the right varieties and
planting dates, and getting good stands are important tools in
making a good crop of peanuts in the Southeast.







Table 1. Peanut Variety
(1993-97)


Test Results from NFREC, Marianna, FL


Pod Yield #/A WM/TSWVt
Avg.
Variety/type 1997 Avg.(93-97) TSMK% Mat.* 1996 1997

Runner

Southern Runner 2512 4146 77.4 L 2.7 3.0
Andru 93 2576 4014 77.8 E 4.3 5.8
Georgia Green** 2790 3959 78.9 M 2.8 4.3
Marc I 2460 3842 76.7 E 4.0 7.0
GK 7 1830 3587 79.4 M 5.0 6.8
Florunner 2024 3522 79.8 M 4.3 6.3
Georgia Runner 2269 3500 79.7 M 5.0 6.0
AT 108** 2265 3490 74.5 M 5.0 7.0
AT 120** 1972 3415 74.8 E 4.2 7.3
Sunrunner 1490 3365 78.7 M 5.5 8.0
SunOleic 95R 1353 3289 77.2 M 5.0 7.2

Virginia

NC 10C 2791 4235 74.8 ML 4.0 5.8
NC 7 2898 4210 76.1 ME 3.3 4.8
NC V11 2385 3987 73.0 E 2.8 5.8
VA 92R 2324 3920 75.9 E 4.0 7.3
VC 1 2229 3702 74.7 E 4.2 6.3

New Entries

Florida MDR 98 3750 79.2 L 3.0
NC 12C 2903 73.9 E 4.7
Virugard 2389 77.0 E/M 4.3
SunOleic 97R 2218 76.6 M 6.5
Flavor Runner 1746 77.6 M 6.3
GK 7 Hi Oleic 1515 75.9 M 6.8

*Maturity (E = early, M = medium, L = late); ** 1995-1997 only;
tWhite mold and TSWV ratings in 1996 and 1997 (1-10, 1 = no
disease).








Table 2. Peanut Variety Test Results from Green Acres,
Gainesville, FL (1993-97)


Pod Yield #/A
% TSMK
Variety/type 1997 1996 Avg. (93-97) 1997

Runner

Georgia Green** 4695 4538 4986 81.6
SunOleic 95R 4078 4320 4568 75.2
GK 7 4296 4961 4498 79.1
AT 108** 3013 4828 4457 77.7
Sunrunner 4404 4489 4426 78.9
Marc I 4078 4247 4407 79.6
Andru 93 3945 4332 4365 80.7
Florunner 4041 4417 4346 78.9
Georgia Runner 3993 4610 4339 79.5
Southern Runner 4538 3866 4275 78.9

Virginia

VC 1 4296 4550 4610 74.3
NC V11 3957 4743 4342 74.3
NC 7 4078 4925 4325 76.7
VA 92R 3654 4743 4254 77.2
NC 10C 3352 5409 4194 74.0

New Entries

SunOleic 97R 4441 78.1
GK 7 Hi Oleic 4199 78.7
Florida MDR 98 3993 80.7
NC 10C 3896 77.5
Flavor Runner 3521 77.0
Virugard 3207 79.1


** 1995-1997 data.







Table 3. Peanut Variety Test Results from WFREC, Jay, FL 1995-97



Yield #/A

Entry 1995 1996 1997 Average

NC V11 -- 5082 5209 5146
SunOleic 97R 5147 4864 4603 4871
Georgia Runner 4919 4683 4421 4674
Southern Runner 5209 4465 3986 4553
Florunner 4574 4538 4385 4499
Georgia Green -- 4683 4276 4480
Andru 93 5082 3957 4302 4447
NC 7 4421 4320 4120 4287
AT 108 4726 3557 4320 4201
GK 7 -- 4320 3848 4084
SunOleic 95R 4592 3122 -- 3857










Table 4. Pod yield
rolfsii) studies at


and disease rating for white mold (S.
Marianna, 1995-96


Pod Yield (#/A) Disease*

Entry/mkt. type Uninoc. Inoc.** Loss Uninoc. Inoc.**

Runner


Southern Runner
Georgia Green
Andru 93
Marc I
AT 120
AT 108
GK 7
Florunner
Georgia Runner
SunOleic 95R
Sunrunner


Virginia

NC 10C
NC 7
NC V11
VA 92R
VC 1
NC 9


Avg.


5033
4544
4395
4144
4137
4102
4055
3951
3807
3669
3614


4791
4688
4443
4376
4119
4060


4231


2544
2419
1902
1779
1277
1432
1377
1485
1466
1494
1604


2069
2023
2925
2605
2238
2558


1953


2489
2125
2493
2365
2860
2670
2678
2466
2341
2175
2010


2722
2665
1518
1771
1881
1502


227


2.5
2.3
3.3
2.9
3.4
3.4
3.5
3.3
3.6
3.9
3.8


2.9
2.7
2. 3
5.3
3.1
3.0


3.2


4.6
4.9
6.6
6.6
7.5
8.2
7.9
7.3
7.6
7.9
7.3


6.2
6.9
4.9
5.8
5.9
5.7


6.6


*Disease rated on 1-10 scale,


1 = no disease.


**Inoculated with S. rolfsii (white mold).