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gono y. Research ort AG 78-6 (Revised) February 1978 /4 -
Library 7f-
SUNFLOWER TE TS IN THE GAINESVILLE AREA--YIELDS AND OIL CONTENTS1/
MAY 2 8 1987 R v. 7
Victor E. G een, Jr., Abdul M. Akhanda, and Gordon M. Prine-'
'versity of Florida
Sunflower cultivars have been improved for four general uses; oil, bird
,silage, and confection (hulled and unhulled). Tests at Gainesville have
conducted only with sunflower for oil. As incomes rise, so does the use
getable oils. As the use of synthetic fibers increases, the use of cotton de-
es, causing a scarci-ty of cottonseed for oil. There is a concerted effort
le USA at this time to increase the supply of sunflower seed for oil to
9 the cottonseed presses in operation the entire year. Sunflower is an
in
lent choice of oilcrop for the South because its seeds contain 50% oil of
About 90% is poly-unsaturated, making it one of the most healthful oils
world. Sunflower oil produced in the southern USA is less poly-
,.urated than that grown in the northern USA.
Sunflower should be a good crop in multiple cropping systems for north and
:st Florida. It is resistant to frost and yields well when planted in the first
alf of February. Before his retirement, Or. G.BKillinger grew sunflower crops
in the early 1970s. His early February tests made higher yields using Russian
open-pollinated varieties than our tests with hybrids planted in March or April,
or even later, as summer weather approached. Tests planted in March-and April
annually at Jayiln west Florida with both open-pollinated varieties and
'brids have always yielded less than Killinger's early February tests with the
sian releases. See Table 1.
hese tests were conducted cooperatively with Dr. Dalton E. Gandy, Agronomist,
itional Cottonseed Producers Assn., Memphis, Tenn. Oil and fatty acid
ialyses are courtesy of Dr. James A. Robertson, ARS-USDA, Athens, Ga., without
nose assistance these tests would have been impossible.
professor (Agronomist), Doctoral Candidate on Ford Foundation Scholarship on
leave from Bangladesh Academy for Rural Development, Kotbari, Comilla; and
Professor (Agronomist), Agronomy Department, IFAS, University of Florida,
Gainesville, Fla. 32611.
2 -
In 1976, a 14-entry test was made in cooperation with the National Cotton-
seed Producers Association. See Table 2. Peredovik 66 and Sputnik 71 are
Russian open-pollinated varieties, the remainder are USA hybrids. Details of
the test are in the footnotes of Table 2. Average data are as follows: 63 inch
plants varying from 46-66 inches; June 18 flowering date, with extremes of June
16 and 21; 1140 Ibs/A yield varying from 870-1470; total oil content of from
44.0 to 51.3%, averaging 47.7%, 7.6% or polysaturated (undesirable) fatty acids
palmiticc and stearic) but 91.4% poly-unsaturated (desirable) fatty acids oleicc
and linoleic). This totals 99% due to rounding. This composition makes the
oil very desirable in the diet of cardiac and vascular disease patients and
those persons who do not desire to become such.
Table 3 shows the results of the 1976 National Sunflower Performance Trials.
Average yields per acre are shown for the western, northern, and southern areas.
The yields for the southern and northern areas were essentially the same for the
10 hybrids and the 2 open-pollinated varieties, at about 1700 Ibs/A. The west-
ern area averaged about 2500 Ibs/A for all entries in the 1976 tests. The
entries were also ranked for yields under irrigation and nonirrigation. Inter-
state 891 yielded best when not irrigated, nationwide, as well as in north
Florida. It ranked number 2 when irrigated.
On February 18, 1977 a test was seeded with 11 hybrids and 2 open-pollinated
varieties. Table 4 shows the agronomic characteristics and Table 5 shows the
industrial characteristics of this irrigated field trial. Footnotes to these
tables outline the log of the test, key dates, and operations such as irrigations,
fertilizations, and sprayings, as well as planting and harvest dates. First
flowering was recorded from April 19 to May 5, averaging April 28. Full flower dates
'were recorded as occurring from April 29 to May 18, averaging
May 9; plant heights of from 50 to 78 inches, averaging 69 inches tall; yields
per acre of from 1230 to 2730, averaging about one ton per acre; with test
weights of 29 to 34 pounds per bushel, averaging 31 Ibs/bu. See Table 4.
Table 5 shows the total oil content of the 11 hybrids and 2 open-pollinated
varieties as well as the fatty acid composition of the oil and oil production
per acre. Standard deviations of each parameter were calculated. This table
shows the real value of a sunflower crop. Note that the total oil content of
13 entries averaged 48.3% oil, with extremes of 45.8 and 51.1%. Over 90% of
this oil is poly-unsaturatedw.which should place it in demand in both the local
and export markets. Only about 9% of the total oil is saturated. Oil
production per acre averaged 960 pounds, with extremes of from 560 and 1320
pounds per acre. See Table 5.
Because a number of Alachua County farmers were going to plant sunflower
following drought killed corn in July and August of 1977 we also planted
a test on August 18, 1977. The same 13 entries of the February planting were
tested. Footnotes to Table 6 show the log, important dates and practices of
the test. This test followed tobacco and nematodes were a great problem. At
harvest, there was hardly any root system on many of the plants. There were
great reductions from the February planting in plant heights (30-55", averaging
40); head diameters (1.5-3.7", averaging 2.5); number of heads per 10-foot row
(3-20, averaging 15); and yields (180-720, averaging 500 pounds per acre) in
this test. Yields would probably have been higher had pesticides and irrigation
water been applied. Farmers in the area made 800-2300 pounds per acre which
so Idat $0.08/1b. Most of the farmers planted Golden Harvest hybrids from the
Columbiana Seed Company.
Table 7 is the information sheet that accompanied the seed for the National
Sunflower Performance Trials and was drawn up by Dr. Dalton E. Gandy of the
National Cottonseed Producers Association of Memphis, Tenn. Useful information
in this table includes the hybrid names and sources, number of seeds per pound,
the seed size index, and the planter plate guide for three manufacturers plates.
- 4 -
ADDITIONAL READING
Striking oil with sunflowers. 1977. Agricultural Research, ARS-USDA, pp. 6-7.
Sunflowers: Production, pests and marketing. June 1975. Extension Bull. 25,
North Dakota State Univ. 60 pp.
Sunflower food products. March 1972. Texas A & M Univ. MP-1026, 10 pp.
Sunflower: A survey of the literature. May 1971. Texas A & M Univ. MP-992.
32 pp.
USDA ARS North Central Region, Iowa-Missouri area.
Plant Introduction Station. May 1976. 9pp.
introductions by sunflower moth and birds, by
Iowa.
University of Minnesota.
direction. MP-141.
North Central Regional
Damage to sunflower
James L. Jarvis. Ames,
1976. Sunflower population, row width, and row
24 pp.
USDA-FAS. Oilseeds and products. Dec. 1977. World production and trade of
sunflowerseed and oil and meal. FOP 23-77. 8 pp. Washington, D. C. 20250.
Sunflower production guidelines for the southeastern United States, Jasper E.
Jernigan. 1978. National Cottonseed Products Assn., Inc. Memphis, TE 38112.
14 pp.
RBA News. December 1977. Rauenhorst, Bellows & Associates. Olivia, MN 56277.
The January 1978 issue will also be largely devoted to sunflower culture.
SUNFLOWER.
annually.
Official publication of the Sunflower Assn. of America. 6 times
In 1978 Volume 4 was current. Box 2051, Fargo, ND 58102.
Proceedings of the International Sunflower Conferences. The VIII conference will
be in the Leamington Hotel, Minneapolis, MN in July 1978.
-5-
Table 1. Sunflower seed yields
1970s at Gainesville,
of open-pollinated varieties and hybrids In the early
FL from early February plantings.
Yields, Pounds Per Acre During Indicated Growing Season
1971 1972 1973 1974 1975 Averagel/
Krasnodarets 2418 1942 N --- N 2180
0 0
Peredovik 2360 2152 3231 2580
T T
NK H01 2548 3422 -- 2990
T T
Record --- 3134 S 3557 S 3340
NK Romsun HS-52 --- 3877 3775 3830
Issanka -- ---- 4048 4050
USDA 8946 -- ---- 4592 4590
USDA 896 ---- --- 3249 '250
Annual Average 2440 2910 3740 ---
Data courtesy of Dr. Gordon B. Killinger,
University of Florida, IFAS, Gainesville,
Agronomist (Professor) Emeritus,
FL 32611.
1/ Yield figures rounded to nearest 10 lbs. per acre.
1971 Notes: Seeded Feb. 1 @ 7 Ibs/A in 36-inch rows; 400 Ibs/A 10-10-10
at plantings; 50 Ibs/A N and 30 Ib/A K20 on April 13; 3 on-inch irri-
gations in 4/71 + 5/71; harvested 6/8. Arredondo fine sand.
1972 Notes: Planted Feb. 7; harvested early June; Krasnodarets earliest
bloomer; 4 reps; 10' row combined for yield; Avg 25 plants/10' of row
36" apart; harvested before bird damage; 500 Ibs/A 10-10-10 on Jan 24;
sidedressed in March with 66 Ibs N and 60 Ibs K20 peracre; irrigated
3 times 0.75" each H20, on Arredondo fine sand.
1974 Notes: Planted Feb. 11, 6 to 7 Ibs/A seed; 500 Ibs/A 10-10-10 on
Feb. 4; 100 Ibs/A NH4N03 and 60 Ibs/A K20 from KCL; harvested from late
May to early June; 16 plants/8' of row stand; irrigated 4/19 and 5/1
with 0.75" H20; considerable bird damage, but.harvested prior to that.
IMore details on these tests can be found in Agronomy Research Reports
AG 72-5, 73-3; and 75-3, Agronomy Department, IFAS, University of Florida,
Gainesville, Florida 32611.
Table 2. The agronomic and industrial character
of Florida, Gainesville, 1976.
istics of late planted sunflowers at the Agronomy Farm, University
SHeight, Date of Yields, Test Total Oil Fatty Acid Content of the Sunflower Oil; %
Brand Hybrid Inches Flower, Pounds/ Wt/Bu. Percent, Palmitic Stearic Oleic Linoleic
June Acre Lbs. Dry Basis 16:0 18:0 18:1 18:2
Cargill 201 63 21 1470 27.9
Interstate 891 64 17 1470 26.1 51.3 4.7 2.5 52.5 39.7
Northrup-King Romsun HS-52 65 21 1315 26.8 -- ---- -
Pacific Oilseeds Sun-hi 3Q4 65 20 1290 26.5 46.9 4.7 3.1 50.6 40.6
Cargill Percdovi .66 66 16 1165 26.1 47.3 4.6 3.0 54.8 36.6
Growers Sungrow 372, 62 16 1145 27.2 50.4 4.7 2.8 49.6 41.9
Northrup-King Sunbred 212 65 16 1145 26.8 44.0 4.4 3.3 59.3 31.8
Northrup-King Sunbred 223 46 18 1085 28.2 46.0 4.6 3.0 54.6 37.0
Dalgren DO 410 62 16 1080 27.2 46.6 4.4 3.3 55.7 35.4
Pacific Oilseeds Sun-hi 301 64 21 1035 25.4 48.5 4.5 3.1 56.7 34.9
Growers Sungrow 380 65 18 1015 26.4 50.4 4.7 2.9 53.5 37.7
Interstate 8944 65 16 990 26.8 44.7 4.6 3.2 54.7 36.4
Cargill 204 62 17 885 27.2 47.6 5.1 2.6 49.6 41.6
Cargill Sputnik 71 64 17 870 26.8 49.2 4.4 3.1 59.0 32.5
Mean Values 63 18 1140 26.8 47.7 4.6 3.0 54.2 37.2
Planted April 14; Harvested July 21. Fertilizer at planting: 800 Lbs/Acre 4-8-16. Arredondo fine sand. Four row plots,
4 replications, rows 3 feet apart and 25 feet long. Harvested 2 center rows for data. Sidedressed with 250 Lbs/Acre
NH N03 on May 21. No irrigation water applied. Yields were suppressed by severe damage by birds. In cooperation with
Dr. Dalton E. Gandy, Agronomist, National Cottofseed Producers Assn., Memphis, TN. Oil and fatty acid analysis courtesy
of Dr. Jim Robertson, R. B. Russell ARC, UG, Athens, Ga. Rainfall recorded during crop growth of the experiment:
April 14-30: 0.85, May: 6.38; June: 11.37; and July 1-21: 2.06 inches; Total rainfall- 20.66 Inches.
V.E. GREEN, JR.
- 7 -
TABLE 3.
Variety.
Hybrid.s
SUMMER Y
1976 National Sunflower Performance Trials
Average Yields Per Acre for Each Area
Western
Average
1. Hybrid 204 2370
2. 00 410 2766
3. Sun-Gro 372 2252
4. Sun-Gro 380 2483
5. Hybrid 891 2611
6. Hybrid 8944 2563
7. Sunbred 212 2890
8. Sunbred 223 2390
9. Sun-Hi 301 2374
10. Sun-Hi 304 2535
YIELD AVERAGE: 2523.4
Open Pollinated
11. Peredovik 66 2301
12. Sputnik 71 2690
YIELD AVERAGE: 2495.5
Rank
10
2
12
7
4
5
1
8
9
6
11I
3
Southern
Average
1720
1561
1659
1725
1758
1726
1715
1639
1817
1807
1742.7
1601
1615
1608
Rank
6
12
8
5
3
4
7
9
1
2
11
10
Northern
Average
1771
1677
1681
1808
1876
1790
1783
1601
1771
1782
1754
1717
1761
1739
Rank
7
11
10
2
1
3
4
12
6
5
9
8
Ranking of Sunflower Varieties
in the Performance Trials
Overall Nonirrigated Irrigated
Rank Rank Rank
1 Hybrid 891 2 2
2 Sunbred 212 1 5
3 Sun-Hi 304 3 1
4 Sun-Hi 301 6 6
5 Hybrid 8944 4 7
6 Sun-Gro 380 8 4
7 Sputnik 71 9 3
8 Hybrid 204 7 9
9 Sun-Gro 372 11 10
10 Peredovik 66 10 11
11 Sunbred 223 5 12
12 DO 410 12 8
This table courtesy Dr. Dalton E. Gandy, President, International Sunflower Assn.
8 -
Table-4 1977 Sunflower Test Characteristics Gainesville, FL
Entry Gandy Brand Name Hybrid First Full Plant Yields, Test Weight
Letter Entry Desig- Flower Flower Heights, Lb/Acre Lb/Bu Kg/HI
nation Date Date 5/ Inches x6.2578
A 3 Cargill 204 4/26 9 70 2180 32 200
B Cargill X-203 4/27 9 78 2730 32 200
C 13 Cargill Sputnik 71 4/22 7 73 2270 30 188
0. 14 Interstate Peredovik 4/25 7 77 2450 29 181
66
E 4 Growers Sun-gro 5/2 9 73 1690 29 181
372A
F 5 Growers Sun-gro 5/4 13 75 1650 32 200
380
G Interstate 891 5/5 10 75 1920 32 200
H Interstate 8944 4/25 5 65 1740 33 207
I Northrup-King Sunbred 4/25 5 60 2580 34 212
212
J 8 Northrup-King Sunbred 4/19 4/29 50 1520 29 181
223
K Northrup-King Romsun 5/2 16 67 1230 26 163
HS52
L 9 Pacific Oil Sun-hi 5/4 18 69 1980 33 207
301A
M 10 Pacific Oil Sun-hi 4/25 10 65 1860 32 200
304
Average 4/28 5/9 69 1980 31 194
Planted February 18; Harvested June 14-16, 1977. Field S-16, Agronomy Farm; Rows 3-feet apart
running east and west. Fertilized with 500 lbs/A 10-10-10; Sidedressed with 300 Ibs/A 15-0-15
on March 29; and 200 Ibs/A NH4N03 on April 7. Irrigated as necessary to prevent stress. Rain-
fall: Feb: 1.94; March: 1.22; April: 0.83; May: 0.46; June: 0.37; Total: 4.82 inches.
Irrigation water added: 14.5 inches during crop growth. Cooperative test with Dr. Dalton
Gandy, President, International Sunflower Assn. and Agronomist, National Cottonseed Products
Assn. Inc., Memphis, TE.
V.E. GREEN, JR.
..,:# ,,.'. .. -... .. . .
--1:
r-_
iL1 * - -
brand Name Hybrid or Total Oil % Fatty Acid Composition (Average Percent) r, 'i C ds
Variety Name Dry Basis Unsat. Fatty Acids Total Saturated Fatty Acids Total Seed U7I
18i1 18:2 18;3 .1/ 16:0 18:0 20:0 2/ Pounds per Acre
Growers SunGro 372A 51.1 42.8 47.5 0.1 90.4 5.3 3.5 0.3 9.1 1690 860
Pacific Oil SunHi 301A 50.5 39.0 51.6 0.2 90.8 5.2 3.0 0.4 8.6 1980 1000
Sputnik 71 49.8 42.4 48.4 0.1 90.9 4.7 3.5 0.4 8.6 2270 1130
Growers SunGro 380 48.9 41.2 50.0 0.1 91.3 5.2 2.8 0.3 8.3 1650 810
Pacific Oil SunHi 304 48.9 37.9 53.1 0.1 91.1 5.6 2.9 0.2 8.7 1860 910
NK Sunbred 212 48,5 45.6 44.4 0.1 90.1 5.2 3.8 0.5 9.5 2580 1250
Cargill X-203 48.3 50.6 39.9 0.2 90.7 4.' 3.5 0.5 8.7. 2730 1320
Interstate 891 48.3 39.3 51.5 0.3 91.1 4.9 2.9 0.5 8.3 1920 930
Cargill 204 47.8 40.2 51.2 0.1 91.5 5.3 2.6 0.3 8.2 2180 1040
Interstate 8944 47.4 41.5 49.2 0.1 90.8 5.3 3.3 0.3 8.9 1740 820
NK Sunbred 223 46.7 30.5 58.3 0.1 88.9 6.1 4.1 0.5 10.7 1520 710
Peredovin 66 46.0 47.1 43.2 0.1 90.4 4,8 3.7 0.4 8.9 2450 1130 a
NK Romsun HS-52 45.8 44.4 46.3 0.1 90.8 5.3 3.1 0.4 8.8 1230 560 ,
Average, % 48.3 41.7 48.9 0.2 90.7 5.2 3.3 0.4 8.9 1980 960
Std. Dev., % 1.6 4.9 4.7 0.1 0.7 0.4 0.4 0.1 0.7 440 220
Each figure represents the results of triplicate analyses. 18:1 = o1eic; 18:2 = Linoleic; 18:3 i Linolenic;
16:0 = Palmitic; 18:0 = Stearic; 20:0 = Arachidic Acid. Test planted: February 18, harvested June
18:1 + 18:2 + 18:3 = Total "unsaturate"; 16:0 + 18:0 + 20:0 = Total "saturate" in the total oil.
Analyses courtesy Dr. Jim RObertson, ARS-USDA, Box 5677, Athens, GA 30604.
14-16.
VE GREEN, JR.
Table 6
Entry Gar
Letter Ent
Agronomlc characteristics of a late-summer planted sunflower variety test following tobacco
at.the Green Acres Agronomy Farm near Gainesville, FL, 1977.
idy Brand Hybrid Plant Head Number Heads Yields,
try Name Name Ht., In. Dia., In. per 10' Row Lbs/Acre
A 3 Cargill 204 30 1.8 15 490
B -- Cargill X-203 35 2.9 15 480
C 13 Cargill Sputnik 71 35 3.1 16 330
D 14 Interstate Peredovik 66 40 3.2 18 580
E 4 Growers Sun-Gro 372A 45 1.5 17 670
F 5 Growers Sun-Gro 380 45 2.5 20 680
G -- Interstate 891 55 1.9 19 660
H -- Interstate 8944 50 2.3 17 410
I -- Northrup-King Sunbred 212 50 3.2 16 720
J 8 Northrup-King Sunbred 223 40 3.1 9 530
K -- Northrup-King Romsun HS-52 30 2.0 3 180
L 9 Pacific Oilseeds Sun-Hi 301A 40 3.7 12 250 C
M 10 Pacific Oilseeds Sun-Hi 304 30 1.8 13 460
-----------------------------------------------------------------------
Average 40 2.5 15 500
Planted: August 18; Harvested: December 6, following frosts. Fertilizer at planting with 600
Lbs/Acre 10-10-10. Side-dressed on September 8 with 200 Lbs/Acre NH4N03. No Pesticides applied.
Rainfall during growth: August 8-31: 6.92"; September: 5.72"; October: 0.13"; November: 1.95".
Irrigation water added: None. Cooperative test with Dr. Dalton Gandy, President, International Sunflower
Assn. and Dr. James E. Robertson, ARS USDA, .Russell Research Center, Athens, GA. Planting underwent
a serious nematode infestation following a tobacco crop.
V.E. GREEN, JR.
- 11 -
TABLE 7. 1977 NATIONAL SUNFLOWER PERFORMANCE TRIALS
Entry Germination Seed
No. Entry % Source of Seed. Seeds/lb. Size
Hybrids
1. Cal/West 894 86 Cal/West Seed Company 5500-5600 3
2. CalA/est 903 91 5500-5600 3
3. Cargill 204 95 Cargill, Inc. 6288 5
4. Sun-Gro 372A 85 Growers Seed Assn. 5800 3
5. Sun-Gro 380 85 6500
6. Hybrid 8943 90 Interstate Seed & Grain Co. 5900-6100 3
7. Sunbred 254 90 Northrup-King & Co. 5925-6125 3
8. Sunbred 223 90 6675-6875 3
9. Sun-Hi 301A 90 Pacific Oilseeds, Inc. 6000-6500 3
10. Sun-Hi 304 90 6000-6500 3
11. Big Top + 91 Rauenhorst, Bellows & Assoc. 5500 3
12. Sigco 894 96 SigCo Sun Products 6500 3
Open Pollinated
Varieties (check)
13. Sputnik 71 93 Cargill, Inc. 5808 3
14. Peredovik 4* 90 Interstate Seed & Grain Co. 6000-6200 3
Planter Plates Guide
Grade 5 Grade 4 Grade 3 Grade 2
Planter Filler Planter Filler Planter Filler Planter Filler
Plate Ring Plate Ring Plate Ring Plate Ring
(1) B 050-24 B FR-40 B 040-24 B FR-40 B 030-24 B FR-2 B 020-24 B FR-2
(2) C 050-24 C FR-3 C 040-24 C FR-3 C 030-24 C FR-3 C 020-24 C FR-3
(3) B 050-24 B 040-24 B 030-24 B 020-24
+ Adapter B FR-40 + Adapter B FR-40 + Adapter B FR-2 + Adapter B FR-2
(1) John Deere; (2) International; (3) Allis Chalmers
This table courtesy of Dr. Dall6n E. Gandy, formerly Agronomist for the Uational
Cottonseed Producers Assn, Memphis, TE; now Agronomist, Rauenhorst, Bellows & Assoc.
Olivia, MN.
Table 8 Sunflower yields of seed
itulation of results.
and oil for two years at Gainesville, Florida, 1976 and 1977. Recap-
- - - - - - POUNDS PER ACRE- - - -
BRAND HYBRID Yields of sunflower seeds Yields of sunflower oil
1976 1977 Average 1976 1977 Averac
Interstate
Pacific Oils,
Growers(Cargil 1)
Northrup-King
Northrup-King
Pacific Oils.
Growers
Interstate
Cargi 11
Cargi 11
Cargill
Cargil 1
Dalgren
Cargill(Inter)
Northrup-King
Average for the
891
Sun-Hi 304
372A
Sunbred 212
Sunbred 223
Sun-Hi 301-A
Sungrow 380
8944
204
Sputnik 71
201
X-203
00-410
Peredovik 66
Romsun HS-52
year
year
1470
1290
1150
1150
1090
1040
1020
990
890
870
1470
1080
1170
1320
1140
1920
1860
1690
2580
1520
1980
1650
1740
2180
2270
2730
2450
1230
1980
1700
1580
1420
1870
1310
1510
1340
1370
1540
1570
1470
2730
1080
1810
1280
- e- m -
51.3
46.9
50.4
44.0
46.0
48.5
50.4
44.7
47.6
49.2
46.6
47.3
47.7
48.3
48.9
51.1
48.5
46.7
50.5
48.9
47.4
47.8
49.8
,----
48.3
46.0
45.8
48.3
49.8
47.9
50.8
46.3
46.4
49.5
49.7
46.1
47.7
49.5
48.3
46.6
46.7
45.8
- - - - - -
Yields of oil/acre
e 1976 1977 Aver,
750 930 840
610 910 460
500 860 680
510 1250 880
500 710 610
500 1000 750
510 810 660
440 820 630
420 1040 720
430 1130 780
+-- ---- ----
--- 1320 1320
500 ---- 500
550 1130 840
--- 560 560
520 96 ---
520 960 --
Planting dates: April 14, 1976; February 18, 1977. Harves
These tests were conducted cooperatively with Dr. Dal*'" e
Association, Memphis, TE, also President, Interne*
In the laboratory of Dr. '- '"rtson, ARS-"
Total rainfall during '-20"
t dates: July 21, 1976;
June 14-16, 1977.: '
tonal Cottonseed Producers
analyses were performed
,nt stre. VI.E. GREEN,
JR.
- -- -- =- -- --
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