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Group Title: Research report - Gulf Coast Research and Education Center - BRA1999-1
Title: Snap bean variety evaluation
CITATION PAGE IMAGE ZOOMABLE PAGE TEXT
Full Citation
STANDARD VIEW MARC VIEW
Permanent Link: http://ufdc.ufl.edu/UF00067750/00001
 Material Information
Title: Snap bean variety evaluation spring 1998
Series Title: GCREC research report
Physical Description: 6 p. : ; 28 cm.
Language: English
Creator: Howe, T. K ( Teresa K )
Combs, D. R
Gilreath, J. P ( James Preston ), 1947-
Gulf Coast Research and Education Center (Bradenton, Fla.)
Publisher: Gulf Coast Research and Education Center, IFAS, University of Florida
Place of Publication: Bradenton FL
Publication Date: 1999
 Subjects
Subject: Green bean -- Varieties -- Florida   ( lcsh )
Green bean -- Yields -- Florida   ( lcsh )
Genre: government publication (state, provincial, terriorial, dependent)   ( marcgt )
bibliography   ( marcgt )
non-fiction   ( marcgt )
 Notes
Bibliography: Includes bibliographical references (p. 3).
Statement of Responsibility: T.K. Howe, D.R. Combs, and J.P. Gilreath.
General Note: Caption title.
Funding: Bradenton GCREC research report
 Record Information
Bibliographic ID: UF00067750
Volume ID: VID00001
Source Institution: Marston Science Library, George A. Smathers Libraries, University of Florida
Holding Location: Florida Agricultural Experiment Station, Florida Cooperative Extension Service, Florida Department of Agriculture and Consumer Services, and the Engineering and Industrial Experiment Station; Institute for Food and Agricultural Services (IFAS), University of Florida
Rights Management: All rights reserved, Board of Trustees of the University of Florida
Resource Identifier: oclc - 73479882

Table of Contents
    Copyright
        Copyright
    Title Page
        Title Page
    Materials and methods
        Page 1
    Results and discussion
        Page 2
    Summary
        Page 3
    Literature cited
        Page 3
    Tables
        Page 4
        Page 5
        Page 6
    The gulf coast research and education center
        Page 7
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







W l/ UNIVERSITY OF
SFLORIDA
Institute of Food and Agricultural Sciences


OCT 1 9 1999
IARSTON SCIENCE LIBRARY


Gulf Coast Research and Education Center
5007 60th Street East, Bradenton, FL 34203
GCREC-Bradenton Research Report BRA-1999-01


SNAP BEAN VARIETY EVALUATION
SPRING 1998


T. K. Howe, D. R. Combs, and J. P. Gilreath








GCREC Research Report BRA1999-1


SNAP BEAN VARIETY EVALUATION. SPRING 1998

T. K. Howe, D. R. Combs and J. P. Gilreath'
Gulf Coast Research and Education Center
University of Florida, IFAS
5007 60th St. East
Bradenton, FL 34203


Florida vegetable statistics indicate that the value of fresh market snap beans was $57.3 million in
the 1996-97 season which had decreased 28% from the previous season's value of $79.6 million
(Fla. Agr. Stat. Serv., 1998). However, the value of the snap beans was surpassed only by tomatoes,
bell peppers and cucumbers. Bean production was 4.0 million 30-lb bushels, and came from 28,700
acres with an average price of $14.51 per bushel. The 1996-97 yield of 138 bushels per acre was 57
bushels less than the previous year (Fla. Agr. Stat. Serv., 1998,1997).

A variety trial was conducted at the Gulf Coast Research and Education Center (GCREC) in
Manatee County during the spring of 1998 to provide information on yield and horticultural
characteristics of 18 bean entries. The last reported public snap bean trial in Florida was conducted
over 10 years ago in 1983-84 (Ozaki and Schulz, 1986).

MATERIALS AND METHODS

Raised beds of EauGallie fine sand were formed on April 2, 1998. The 16-inch wide, 10-inch high
beds were spaced on 3 ft centers with seepage irrigation. An acre was equivalent to 14,520 linear
ft of bed. Fertilizer application was at a rate of 100-100-100 (N-P20O-K20) applied as 6-6-6 at 1670
lb/A. Prior to bedding, the entire field was treated with metolachlor at 1.0 lb.a.i./A for weed control.

Seed of 18 bean entries were direct sown on April 6, 1998. Fifty seeds were spaced 2.5 inches apart
in single rows down the center of each plot. Fields were baited for mole crickets after planting. Four
replications of each variety were arranged in a randomized complete block design.

Plants were scouted for pests throughout the season. Stinkbug, thrips, leafroller, leafminer and beet
armyworm were the primary insects found. Bacillus thuringiensis, azadirachtin and methomyl were
used according to label instructions to control insect pest populations during the season. A
preventative spray program using copper salts was followed for control of bacterial and fungal
diseases. Beds were weeded by hand as necessary.


'Research Program Coordinator, Biologist, and Associate Professor, respectively.










Pods, from a 5-ft long section in each plot, were harvested when tender, well-shaped and before the
developing seeds caused the pods to bulge. Fruit of the replicated entries were harvested 27,28 May
and 1, 3, 8 June, 1998. All four replications of each entry were harvested only once. Samples of
pods were evaluated for pod length, smoothness, sieve size, color and uniformity (Table 3). Beans
were graded as cull or marketable by U.S. standards for grades (USDA, 1981). Both cull and
marketable fruit were weighed.

RESULTS AND DISCUSSION

In spring 1998, average daily temperatures were near normal as compared to the 44-year means
(Table 1). April was very dry (1.68 inches below normal) followed by a fairly average May. June
was also very dry, when only 0.32 inches fell in the first 10 days of the month in which 7.69 inches
is average for the entire month.

YIELD:

Dates for 50% flowering ranged from May 12 to May 16. 'Storm' was the first entry to reach 50%
flowering and 'Shade' was last (Table 2). Dates of harvest ranged from May 27 to June 8. Only
one entry was harvested on May 27, 'Storm', two entries were harvested on June 8, 'Fandango' and
HMX 5991, and the majority of entries were harvested on May 28, June 1 and 3, 1998 (Table 2).

Marketable yield (Table 2) ranged from 23 bu/A for HMX 5991 to 222 bu/A for 'Storm'. Total
marketable yield from 'Storm' was significantly greater than all other entries.

Total cull yield ranged from 39 bu/A for 'Zodiac' to 97 bu/A for 'Benchmark'. Twelve entries were
not significantly different from 'Zodiac'. U-shape and undersized pods were the primary causes of
culls. U-shape pods ranged from 5 bu/A for 'Shade' to 52 bu/A for EX 393. Undersized pods ranged
from 11 bu/A for 'Zodiac' to 39 bu/A for HMX 5991. Seven entries were not significantly different
from 'Zodiac' with respect to undersized pod yield.

POD DIMENSIONS AND CHARACTERISTICS:

Average sieve size ranged from 2.7 for 'Fandango' to 4.0 for 'Storm' and MB 8007 (Table 3). A
sieve size in the range of 3.0 to 4.0 (0.27 to 0.38 inches) is preferred by the Florida market.
'Fandango' was the only entry not in that range. Pod length ranged from 4.2 inches for HMX 5991
to 5.3 inches for EX 394. Seven entries were not significantly different from EX 394: 'Zodiac' (5.2
inches), EX 393 (5.1 inches), SCC 1204 (5.1 inches), 'Sonato' (5.1 inches), 'Probe' (5.1 inches) and
'Seville' (5.0 inches).

Smoothness, color and uniformity of the pods were judged by a subjective rating on a 1 to 5 scale,
where 5 is best (Table 3). Pod smoothness ranged from 3.1 for 'Sonato' to 4.2 for 'Opus'. Seven
entries were significantly different from 'Opus': 'Benchmark', MB 8007, 'Carlo', 'Seville', HMX
5991, SCC 1204 and 'Sonato'. 'Benchmark', HMX 5991 and 'Fandango'were the only entries with
a color average different than 3.0. Uniformity ranged from 3.1 for EX 394 to 4.1 for EX 393.










The average ground clearance (distance rating between the pods and the soil) ranged from 2.0 inches
for 'Storm', 'Opus', 'Seville', SB 4188, 'Benchmark', 'Zodiac', MB 8007, 'Carlo', SCC 1204,
'Strike', 'Shade' and 'Fandango' to 4.0 inches for EX 394, 'Sonato' and HMX 5991.

SUMMARY

The entries with the highest yield in the once over harvest were 'Storm', 'Opus', and EX 393 (Table
2). These entries also had the desirable horticultural qualities of good sieve size, pod length and pod
smoothness (Table 3).

The earliest snap bean entry was 'Storm'. 'Storm' was also the first entry to reach 50% flowering
and the first to be harvested (Table 2). Overall, 'Storm' was the best entry in the trial.


Note: The information contained in this report is a summary of experimental results and should not
be used as recommendations for crop production. No discrimination is intended or endorsement
implied where trade names are used.

Acknowledgment: The authors thank the following organizations/firms which donated funds toward
vegetable cultivar research during 1997 and 1998: Abbott & Cobb Inc., Agrisales, Seminis-Asgrow
Seed Co., Daehnfeldt Inc., Enza Zaden, Ferry-Morse, Pepper Research, Novartis, Sakata Seed
America Inc., Samen Mauser, Shamrock Seed Co., Sunseeds and Vilmorin.

LITERATURE CITED

Florida Agricultural Statistics Service. 1998. Florida agriculture: Vegetables acreage, production
and value. Fla. Stat. Serv., Orlando, FL.

Florida Agricultural Statistics Service. 1998. Vegetable summary 1996-97. Fla. Agr. Stat. Serv.,
Orlando, FL.

Ozaki, H. Y. and Schulz, D. D. 1987. Bush snap bean variety trial results, p 6 In: D. N. Maynard
(ed.). Vegetable variety trial results in Florida for 1986. Fla. Agr. Expt. Sta. Circ. S-341.

Stanley, C. D. 1998. Weather report for 1997, Gulf Coast Research and Education Center,
Bradenton, FL. Bradenton GCREC Res. Rept. BRA 1998-02.

United States Department of Agriculture. 1981. U.S. standards for grades of snap beans. USDA
Agr. Marketing. Serv., USDA, Washington, DC.










The average ground clearance (distance rating between the pods and the soil) ranged from 2.0 inches
for 'Storm', 'Opus', 'Seville', SB 4188, 'Benchmark', 'Zodiac', MB 8007, 'Carlo', SCC 1204,
'Strike', 'Shade' and 'Fandango' to 4.0 inches for EX 394, 'Sonato' and HMX 5991.

SUMMARY

The entries with the highest yield in the once over harvest were 'Storm', 'Opus', and EX 393 (Table
2). These entries also had the desirable horticultural qualities of good sieve size, pod length and pod
smoothness (Table 3).

The earliest snap bean entry was 'Storm'. 'Storm' was also the first entry to reach 50% flowering
and the first to be harvested (Table 2). Overall, 'Storm' was the best entry in the trial.


Note: The information contained in this report is a summary of experimental results and should not
be used as recommendations for crop production. No discrimination is intended or endorsement
implied where trade names are used.

Acknowledgment: The authors thank the following organizations/firms which donated funds toward
vegetable cultivar research during 1997 and 1998: Abbott & Cobb Inc., Agrisales, Seminis-Asgrow
Seed Co., Daehnfeldt Inc., Enza Zaden, Ferry-Morse, Pepper Research, Novartis, Sakata Seed
America Inc., Samen Mauser, Shamrock Seed Co., Sunseeds and Vilmorin.

LITERATURE CITED

Florida Agricultural Statistics Service. 1998. Florida agriculture: Vegetables acreage, production
and value. Fla. Stat. Serv., Orlando, FL.

Florida Agricultural Statistics Service. 1998. Vegetable summary 1996-97. Fla. Agr. Stat. Serv.,
Orlando, FL.

Ozaki, H. Y. and Schulz, D. D. 1987. Bush snap bean variety trial results, p 6 In: D. N. Maynard
(ed.). Vegetable variety trial results in Florida for 1986. Fla. Agr. Expt. Sta. Circ. S-341.

Stanley, C. D. 1998. Weather report for 1997, Gulf Coast Research and Education Center,
Bradenton, FL. Bradenton GCREC Res. Rept. BRA 1998-02.

United States Department of Agriculture. 1981. U.S. standards for grades of snap beans. USDA
Agr. Marketing. Serv., USDA, Washington, DC.








4

Table 1. Temperature and rainfall at the GCREC during the spring of 1998 and the 44-year
averages (Stanley, 1998).


Average Daily Temperature (oF)
Maximum Minimum Rainfall (in.)
Month 1998z 44-vr avg 1998Z 44-vr avg 1998z 44-vr avg

April 82 82 60 60 0.10 1.78
May 88 87 65 65 3.41 3.24
June 92 90 73 70 0.32 7.69

Field direct sown April 2, 1998. Last harvest June 8, 1998.
YJune 1998 weather information is tabulated for the first 10 days of the month only.









Table 2. Yields, incidence of culls, plant stand, and days to harvest and 50% flowering from planting for bean entries in the spring, 1998.


From Planting
50% Marketable Culls (bu/A)z Plant
Flower Harvest Yield U-Shape Under-Sized Stand
Entry Source (days)y (days)y (bu/A)z Total Pods Pods (%)

Storm Asgrow 36 51 222 ax 84 ab 47 a 34 ab 71 a
Opus Asgrow 37 52 158 b 72 a-d 40 a 30 a-d 67 ab
EX 393 Asgrow 36 52 156 b 73 a-d 52 a 17 e-g 74 a
Seville Novartis 37 56 104 c 62 b-e 22 b-d 30 a-d 71 ab
SB 4188 Novartis 38 56 102 c 64 b-e 18 b-e 23 b-g 46 a-d
EX 394 Asgrow 37 56 99 cd 52 c-e 18 b-e 23 b-g 70 ab
Benchmark Novartis 37 58 97 cd 97 a 23 bc 28 a-c 53 a-d
Sonato Ferry-Morse 37 56 89 c-e 47 de 11 c-e 24 b-f 63 a-c
Zodiac Asgrow 38 56 87 c-e 39 e 17 b-e 11 g 31 d
Probe Harris Moran 37 56 82 c-e 45 de 11 c-e 20 c-g 51 a-d
Mirada Novartis 38 56 80 c-e 59 b-e 26 b 19 d-g 63 a-c
MB 8007 Novartis 37 58 75 c-e 59 b-e 24 be 15 fg 61 a-d
Carlo Asgrow 37 58 70 c-f 60 b-e 11 c-e 34 ab 59 a-d
SCC 1204 Shamrock 36 56 68 c-f 51 c-e 9 de 20 c-g 74 a
Strike Asgrow 38 58 66 c-f 61 b-e 8e 31 a-c 40 b-d
Shade Harris Moran 40 58 47 d-f 42 e 5 e 23 b-g 35 cd
Fandango Petoseed 38 63 38 ef 79 a-c 17 b-e 38 a 68 ab
HMX 5991 Harris Moran 39 63 23 f 59 b-e 18 b-e 39 a 53 a-d


YNumber of days from planting, April 6.
zBushel=30 lbs. Acre=14,520 linear ft of bed, on 3 ft centers.
xMean separation in columns by Duncan's multiple range test, 5% level.









Table 3. Bean pod characteristics, spring 1998.


Pod Characteristics
Sieve Ground
Entry Source Sizez Length (inches)y Smoothnessx Color" Uniformity' Clearanceu

Storm Asgrow 4.0 at 4.9 cd 3.9 a-c 3.0 c 3.9 a-c 2.0
Opus Asgrow 3.5 b 5.0 b-d 4.2 a 3.0 c 3.9 a-c 2.0
EX 393 Asgrow 3.5 b 5.1 a-c 4.0 ab 3.0 c 4.1 a 3.0
Seville Novartis 3.0 be 5.0 a-d 3.3 d-f 3.0 c 3.3 b-e 2.0
SB 4188 Novartis 3.2 bc 4.9 de 4.0 ab 3.0 c 3.7 a-e 2.0
EX 394 Asgrow 3.4 b 5.3 a 3.8 a-d 3.0 c 3.1 e 4.0
Benchmark Novartis 3.3 b 5.1 a-c 3.5 b-f 4.0 a 3.3 b-e 2.0
Sonato Ferry-Morse 3.4 b 5.1 a-c 3.1 f 3.0 c 3.9 a-c 4.0
Zodiac Asgrow 3.0 be 5.2 ab 3.7 a-e 3.0 c 3.8 a-d 2.0
Probe Harris Moran 3.1 bc 5.1 a-d 3.8 a-d 3.0 c 3.4 b-e 3.0
Mirada Novartis 3.0 be 4.7 e-g 3.8 a-d 3.0 c 3.3 c-e 2.5
MB 8007 Novartis 4.0 a 4.7 ef 3.6 b-f 3.0 c 3.3 c-e 2.0
Carlo Asgrow 3.0 be 4.9 de 3.4 c-f 3.0 c 3.9 a-c 2.0
SCC 1204 Shamrock 3.3 b 5.1 a-c 3.2 ef 3.0 c 4.0 ab 2.0
Strike Asgrow 3.0 be 4.6 fg 3.9 a-c 3.0 c 3.9 a-c 2.0
Shade Harris Moran 3.0 bc 4.5 g 4.0 ab 3.0 c 4.0 ab 2.0
Fandango Petoseed 2.7 c 4.6 fg 3.8 a-d 3.2 b 3.2 de 2.0
HMX 5991 Harris Moran 3.3 b 4.2 h 3.3 d-f 4.0 a 3.2 de 4.0


z2-<0.27 inches, 3=0.27-0.32
'Average of 50 pods.


inches, 4=0.32-0.38 inches, 5->0.38 inches.


xl-very rough, 3-smooth-slightly rough, 5-very smooth.
"l-light green, 3-medium dark, 5-very dark green.
Vl-mixed, 3-satisfactory, 5-uniform
"l-touches soil badly, 5-well above soil.
'Mean separation in columns by Duncan's multiple range test, 5% level.







The Gulf Coast Research and Education Center


The Gulf Coast Research and Education Center is
a unit of the Institute of Food and Agricultural Sci-
ences, University of Florida. The Research Center
originated in the fall of 1925 as the Tomato
Disease Laboratory with the primary objective of
developing control procedures for an epidemic out-
break of nailhead spot of tomato. Research was ex-
panded in subsequent years to include study of sev-
eral other tomato diseases.

In 1937, new research facilities were established
in the town of Manatee, and the Center scope was
enlarged to include horticultural, entomological, and
soil science studies of several vegetable crops. The
ornamental program was a natural addition to the
Center's responsibilities because of the emerging in-
dustry in the area in the early 1940's.

The Center's current location was established in
1965 where a comprehensive research and extension
program on vegetable crops and ornamental plants is
conducted. Three state extension specialists posi-
tions, 16 state research scientists, and two grant
supported scientists from various disciplines of
training participate in all phases of vegetable and
ornamental horticultural programs. This interdisci-
plinary team approach, combining several research
disciplines and a wide range of industry and faculty
contacts, often is more productive than could be ac-
complished with limited investments in independent
programs.


The Center's primary mission is to develop new
and expand existing knowledge and technology, and
to disseminate new scientific knowledge in Florida, so
that agriculture remains efficient and economically
sound.

The secondary mission of the Center is to assist
the Cooperative Extension Service, IFAS campus
departments, in which Center faculty hold appropri-
ate liaison appointments, and other research centers
in extension, educational training, and cooperative
research programs for the benefit of Florida's pro-
ducers, students, and citizens.

Program areas of emphasis include: (1) genetics,
breeding, and variety development and evaluation;
(2) biological, chemical, and mechanical pest manage-
ment in entomology, plant pathology, nematology,
bacteriology, virology, and weed science; (3) produc-
tion efficiency, culture, management, and counteract-
ing environmental stress; (4) water management and
natural resource protection; (5) post-harvest physiol-
ogy, harvesting, handling and food quality of horti-
cultural crops; (6) technical support and assistance to
the Florida Cooperative Extension Service; and (7)
advancement of fundamental knowledge of disciplines
represented by faculty and (8) directing graduate
student training and teaching special undergraduate
classes.


Location of
GCREC Bradenton


IFAS IS:
Q The Institute of Food and Agricultural Sciences,
University of Florida.
" A statewide organization dedicated to teaching,
research and extension.
Q Faculty located in Gainesville and at 13 research
and education centers, 67 county extension
offices and four demonstration units throughout
the state.
Q Partnership in food and agriculture, andnatural
and renewable resource research and education,
funded by state, federal and local government,
and by gifts and grants from individuals, founda-
tions, government and industry.
O An organization whose mission is:
Educating students in the food, agricultural,
and related sciences and natural resources.
Strengthening Florida's diverse food and
agricultural industry and its environment
through research.
Enhancing for all Floridians, the application
of research and knowledge to improve the
quality of life statewide through IFAS exten-
sion programs.




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