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Group Title: Soybean variety trials.
Title: Soybean variety trials, 1975
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Permanent Link: http://ufdc.ufl.edu/UF00075816/00002
 Material Information
Title: Soybean variety trials, 1975
Series Title: Soybean variety trials.
Translated Title: Research report - UF Agricultural Research and Education Center ; CF-76-6 ( English )
Physical Description: Serial
Language: English
Creator: Scudder, W. T.
Publisher: Agricultural Research and Education Center, University of Florida
Publication Date: 1976
 Record Information
Bibliographic ID: UF00075816
Volume ID: VID00002
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: oclc - 144607737

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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











AGRICULTURAL RESEARCH AND EDUCATION CENTER
Sanford, Florida

Research Report CF 76-6 '1 .""" -Sepefber 21, 1976
H UME LIBRtARY
Soybean Variety Trials 1975

W. T. Scudde, SEP 2 7 1977

Two soybean variety trials were conduct-~ &nt l/f.rida by the Sanford
Agricultural Research and Education Center during 1976.'"TDr~-KIuell. inson of
the Agronomy Department, University of Florida, Gainesville, was coordinator
and project leader for the several trials located throughout the state from Jay,
in Escambia County, to Homestead, in Dade County. Grower cooperators who
furnished the land and maintained the crops reported here were Mr. William
W. Tyre at Sanford and Mr. R. Carroll Potter at Zellwood, Florida. The
Sanford trial on mineral soil included the cooperative 1975 Florida State Variety
Trial-South, as designated by Dr. Hinson. The 1975 Florida State Variety Trial-
North, which included many earlier types adapted to north and west Florida, was
planted on organic soil at Zellwood.
At Zellwood, four varieties, Dare, Davis, Essex, and Jupiter, were added
to the 12 selected for the uniform North Florida Trials. The Sanford trial, with
20 varieties, included several late-maturing types better adapted to lower
latitudes, plus three newly introduced Brazilian lines, Prata, Parana, and
IAS-1.
The details of these experiments are itemized on page 2. Both trials were
planted on July 1. The plantings grew well and produced yields considerably
higher than in 1974. During that year, the later planting dates (July 12 at Sanford
and July 18 at Zellwood) appeared to favor certain later maturing varieties such
as Jupiter over the earlier types. In the 1975 crops, seed quality of most of the
late-maturing varieties was significantly higher than that of the early varieties.













Soybean Variety Trial Experimental Data 1975

Sanford


Location
Soil type
No. of varieties
No. or replications
Plot size
Row spacing
Rhizobium inoculation
Planting date
Seed fungicide treatment
Nematode control
Weed control
Pre-emergence

Post-emergence
Insect control
Worms
Stink bugs
Observational data recorded
Lodging
Plant height
Maturity
Seed quality
Harvest dates:
Early and midseason
varieties
Late varieties


W. W. Tyre Farm
Leon fine sand
20
4
4 rows x 19 feet
30 inches
liquid soil injection
July 1
thiram (Arasan 50-Red)
2 lb. Mocap in 15" band

3 lb. CDAA (Randox) +
3 lb. CDEC (Vegadex)
2 cultivations

methomyl (Lannate)
parathion (Niran)
October 23
October 23
October 23
Oct. 23 Nov. 13
January 1976


November 13
November 25


R. Carroll Potter Farm
Everglades mucky peat
16
4
4 rows x 19 feet
36 inches
liquid soil injection
July 1
thiram (Arasan 50-red)
(none)

2 lb. alachlor (Lasso)

2 cultivations

methomyl (Lannate)
parathion (Niran)

November 4
November 4
November 4-18
January 1976


November 4
November 18


Item


Zellwood










Table 1.-Response of 20 soybean varieties grown on sand soil at Sanford,
summer 1975, with comparative 1974 yield data.


Maturityd
b c Maturityd e Yield- Bu/A
S Lodging Height Pods Stems Seed quality
Variety (1-5 rating) (inches) (date) (1-5 rating) (0-10 rating) 1975 1974

Cobb 3.3 35.5 Nov. 12 1.3 8.0 74.6 46.7
Hampton 266A 1.5 29.0 Oct. 30 4.5 7.5 68.1 53.3
Vicoja 3.5 35.3 Nov. 9 3.0 8.0 65.8 44.4
Santa Rosa 5.0 35.5 Nov. 10 1.8 8.0 64.7 46.6
Miniera 2.8 33.0 Nov. 10 2.8 8.0 62.7 35.6
D70-3185 1.0 28.8 Oct. 17 5.0 8.0 62.4
F67-3673 2.0 30.8 Oct. 27 3.5 8.0 61.5 40.2
Ransom 1.0 26.5 Oct. 29 2.5 8.0 61.5 45.3
Bragg 2.0 29.5 Oct. 29 3.3 8.0 61.4 48.0
Hutton 1.8 28.8 Oct. 30 3.5 7.8 60.2 45. 2
Coker 338 1.0 22.5 Oct. 25 4.5 7.8 59.9 --
Hardee 1.8 29.3 Oct. 29 5.0 8.0 58.7 40.3
IAS-1 1.3 28.3 Oct. 17 5.0 7.8 58.1
)Parana 2.0 30.0 Oct. 5 5.0 6.5 51.2 --
Seminole 3.0 27.5 Oct. 22 4.0 8.0 51.0 41.1
Davis 2.3 28.3 Oct. 18 5.0 8.0 50.7 47.2
Forrest 2.8 27.8 Oct. 15 5.0 6.5 48.0 40.3
McNair 600 1.8 26.3 Oct. 17 4.8 7.5 47.2 45.8
Prata 2.0 24.5 Oct. 3 5.0 7.0 45.2
Jupiter 4.8 47.8 Nov. 10 4.3 8.0 43.2 50.0

LSD: 5% level 0.6 2.3 3 days 0.6 0.4 9.3
1% level 0.7 3.0 5 days 0.8 0.5 12.4
Notes: All data are means of four replications.
a
Varieties are ranked in order of decreasing yield in the 1975 trial.
bLodging ratings: 1-erect; 5-all plants lodged.
CHeight: Plant height from soil level to top of main stem.
dMaturity: Pods: Average date when pods became dry.
Stems: Rating Nov. 13; 1-all stems green; 5-all stems dry.
e
Seed quality rating: 0-all seeds shriveled or discolored; 10-all seeds fully
developed, bright, unstained.
Yields followed by the same line do not differ significantly from each other at the
5% level, using Duncan's Multiple Range Test.











-4-


Table 2.-Response of 16 soybean varieties grown on peat soil at
summer 1975, with comparative 1974 yield data.


Zellwood,


b c d e Yield- Bu/acre
Lodging Height Maturity Seed quality Yield -
Variety (1-5 rating) (inches) (date) (0-10 rating) 1975f 1974

Hardee 1.5 28.8 Nov. 1 8.0 63.71 33.3
Bragg 3.0 25.8 Oct. 31 8.8 51.91 30.0
Coker 338 1.2 21.2 Nov. 1 8.0 49.2 --
D70-3185 2.2 28.2 Oct. 28 8.0 47.3 --
Ransom 1.8 27.5 Nov. 2 8.5 47.3 23.7
Cobb 3.0 32.0 Nov. 4 7.2 45.4 34.9
McNair 2.8 27.8 Oct. 29 8.0 45.4 27.5
Hampton 266A 2.8 27.8 Nov. 1 8.2 45.2 27.5
F67-3673 3.2 31.0 Nov. 3 8.0 44.8 34.1
Tracy 3.0 30.5 Oct. 29 7.5 44.2 25.0
Hutton 3.0 31.0 Nov. 2 8.0 41.3 31.4
Dare 2.2 27.2 Oct. 25 8.0 40.6 23.0
Davis 3.0 29.0 Oct. 29 8.5 39.4 27.2
Forrest 2.5 23.8 Oct. 30 7.8 36.6 25.1
Essex 3.5 22.0 Oct. 23 7.2 35.0 26.5
Jupiter 4.0 52.0 Nov. 13 8.2 29.1 35.8

LSD: 5% level 0.6 4.3 2 days 0.8 11.8
1% level 0.8 5.8 3 days 1.0 15.8


Notes: All data are means of four replications.
a
Varieties are tanked in order of decreasing yield in
bLodging ratings: 1-erect; 5-all plants lodged.


the 1975 trial.


c
Height: Plant height from soil level to top of main stem.
dMaturity: Average date when pods became dry.
e
Seed quality rating: 0-all seeds shriveled or discolored; 10-all seeds fully
developed, bright, unstained.
fYields followed by the same line do not differ significantly from each other at
5% level, using Duncan's Multiple Range Test.




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