Title: Cool-season forage trials, 1995-1996
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Permanent Link: http://ufdc.ufl.edu/UF00091697/00001
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Title: Cool-season forage trials, 1995-1996
Physical Description: Book
Creator: Dunavin, Leonard Sypret,
Publisher: West Florida Research and Education Center,
Copyright Date: 1996
 Record Information
Bibliographic ID: UF00091697
Volume ID: VID00001
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 312149138 - OCLC

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j'-( ) ~West Florida Research and Education Center|jarstoin Scienc.
Jay, Florida 32565-9524 Library

Jay, WFREC Research Report WF96-5 OCT 17 tWY' 1996

Cool-Season Forage Trials, 1995-1996
L. S. Dunavinl University of Florida

Cool-season forage trials conducted in l995-1996 included a ryegrass cultivar
trial, a fescue cultivar trial, a clover trial, and an observation of agrotri-
cum.

Conversion factors from English to metric units are presented in Table 1 and
climatological data are given in Table 2.

Ryegrass Cultivar Trial. The ryegrass trial contained 12 cultivars and was
planted on October 12, 1995 on a Tifton sandy loam soil (Plinthic Paleudult).
The seeding rate was 20 pounds per acre. Following seeding, the area was cul-
tipacked. Prior to seeding, an application of 800 pounds per acre of 4-12-12
fertilizer was disked into the soil. Ammonium nitrate was applied at 100 pounds
per acre on December 20, March 4, and April 3. Four harvests were obtained
(February 27, April 2, May 1, and May 29), and yield data are presented in
Table 3. The cold weather apparently had a considerable effect on late. writer
growth. The 150 and 120 F temperatures of February 4 and 5 resulted in damage
to top leaves.

Fescue Cultivar Trial. This trial contained 16 entries and was planted on
November 16, 1993 on an Orangeburg sandy loam soil (Typic Paleudult). An
application of 300 pounds per acre of an 8-24-24 fertilizer was made on Sep-
tember 14, 1995. Ammonium nitrate was applied at 100 pounds per acre on
September 14 and at 200 pounds per acre on November 17, January 23, and March
22. Four harvests were obtained (November 16, January 17, March 22, and April
22), and yield data are presented in Table 4. A harvest was not taken in May
because of very dry weather.

Cool-Season Clovers. This trial contained eight entries and represented seven
different species of Trifolium. The trial was planted on November 15, 1995 on
a Tifton sandy loam soil (Plinthic Paleudult). Seeding rates in pounds per
acre were as follows: Red 10, crimson 20, rose 20, berseem 20, sub 25,
arrowleaf 6, and rabbitfoot 6. The inoculated seed were planted on a good
seedbed and the area was cultipacked. Growth was slow during the rather cold
winter and early spring. Relatively good harvests were obtained in April and
May, and four clovers still were producing in June. The June harvest is included
here although it could not be called a "cool-season" harvest. Yield data are
presented in Table 5. Red clover and arrowleaf clover may well produce into
July, and red could even produce later than that, Additional harvests may be
included in a later report.

Agrotricum Observation. Agrotricum was developed from wheat and a perennial
wheatgrass. The OK906 variety was developed in Oklahoma. Seed of OK906 agro-
tricum were received in December, 1995. This was too late to include agrotricum
in trials at our normal time for planting cool-season trials; however, in order

Associate Professor of Agronomy.









to observe agrotricum, a small observation was planted in rows with wrens
abruzzi rye as a check.

Four replications of rows 16' long on 3' spacing were utilized. The observation
was planted on January 22, 1996 at 10 grams of seed per row. P and K were in
good supply in the soil and ammonium nitrate at 200 pounds per acre was applied
on March 15 and June 3. Harvests were made on April 29 (rye only), May 22, and
June 19 (agrotricum only). Yield data are presented in Table 6. The agrotricum
produced a total that was less than half that of rye, but it did persist into
June.


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Table 1. Conversion factors from English to metric units

English Unit Factor Metric Unit

pounds per acre multiply by 1.12 kilograms per hectare

pounds per acre multiply by 0.00112 metric tons per hectare

tons (English) multiply by 0.9072 tons (metric)

tons (English) per acre multiply by 2.24 tons (metric) per hectare

inches multiply by 2.54 centimeters

yards multiply by 0.914 meters

miles multiply by 1.609 kilometers

acres multiply by 0.405 hectares

o Fahrenheit 0.556 (0 F-32) 0"Celsius .


Table 2. Climatological data for the West Florida I

Jay, 1995-1996.

Precipitation Temperature

inches OF

Month 1995-96 47-year Avg. Avg. Max. Avg. Min.

September 4.23 6.24 89.0 65.9

October 16.85 3.79 80.0 55.5

November 9.05 4.20 67.8 43.6

December 4.71 5.02 61.0 38.5

January 5.67 5.41 60.6 35.6

February 4.72 5.07 65.2 40.3

March 10.62 6.48 65.9 43.3

April 8.92 4.80 74.1 50.4

May 0.64 4.50 87.9 62.4


Research and Education Center,



Solar Radiation

Watts per Square Meter

Daily Avg. 9-yr. Daily Avg.

5301 4591

4450 4124

3250 3187

2835 2501

3120 2311

3910 3186

4480 4158

5234 5416

6399 5374








Table 3. Ryegrass cultivar trial, WFREC, Jay. 1995-1996.

Yield of dry matter

Pounds per acret

Entry 27 Feb. 96 2 Apr. 96 1 May 96 29 May 96 Total

Jackson 110 1880 2260 310 4560

Gulf 410 1980 1790 300 4480

Surrey 180 1840 2120 310 4450

SSEBJS49 340 1900 1900 .290 4430

Grazer 300 1900 1950 240 4390

WVPB-AR-R-9 350 1740 1820 380 4290

Fla. 80 290 1860 1850 280 4280

SSEOP24Z 250 1780 1960 220 4210

Big Daddy 180 1450 2090 440 4160

WVPB-AR-93-101 120 1630 2040 280 4070

FL/ORX1994LR 30 1150 2400 390 3970

WVPB-AR-A-13 390 1040. 1820 300 3550

LSD (t .05) N.S. 420 340 N.S. N.S.

tPounds per acre X 1.12 = kilograms per hectare.

PLANTED: October 12, 1995.

SOIL: Tifton.sandy loam (Plinthic Paleudult).

FERTILIZER: 400 pounds per acre of 4-12-12 on 10 Oct. 95 and 100

pounds per acre of ammonium nitrate on 20 Dec. 95, 4

Mar. 96, and 3 Apr. 96.









Table 4. Fescue cultivar trial, WFREC, Jay. 1995-1996

Dry Matter

Pounds per acret

Entry 16 Nov. 95 17 Jan. 96 22 Mar. 96 22 Apr. 96 Total

Ga. 5 860 190 1570 2140 4760

AU91-2 E.I.* 940 100 1390 2160 4590

UFTF-93B 770 80 1380 2200 4430

AU91-2 E.F. 970 80 1340 2030 4420

UFTF-89BI 710 90 1290 2120 4210

Ga. Jessup Improved E.I. 740 100 1390 1980 4210

AU91-3 E.F. 860 150 1290 1830 4130

Ga. Jessup Improved E.F. 780 70 1310 1780 3940

Ky. 31 720 100 1170 1890 3880

AU91-4 E.F. 770 100 1170 1750 3790

UFTF-92B 500 60 1130 2030 3720

AU91-4 E.I. 670 100 1080 1650 3500

AU91-3 E.I. 780 60 950 1640 3430

AU Triumph 470 60 1110 1500 3140

AU91-1 E.I. 210 20 840 1200 2270

AU 91-1 E.F. 110 10 460 590 1170

LSD (t .05) 410 770 440 510 1180

tPounds per acre X 1.12 = kilograms per hectare.

*E.I. = endophyte infected. E.F. = endophyte free.

PLANTED: November 1:6, 1993.

SOIL: Orangeburg sandy loam (Typic Paleudult).

FERTILIZER: 300 lb./acre 8-24-24 on 14 Sept. 95; 100 lb./acre ammonium

nitrate on 14 Sept. 95 and 200 lb./acre ammonium nitrate on

17 Nov. 95, 23 Jan. 96, and 22 Mar. 96.









Table 5. Cool-season clovers, WFREC, Jay. 1995-1996.

Dry Matter

Pounds per acret

Clover 11 Apr. 96 9 May 96 11 June 96 Total

Yuchi arrowleaf 1580 2790 400 4770

Rabbitfoot 280 3970 220 4470

Overton X white rose 2730 1390 --- 4120

Flame crimson 2820 1000 --- 3820

Cherokee red 420 2070 1320 3810

Flame X DWC crimson 2610 970 ---- 3580

Bigbee berseem 730 1960 700 3390

Mt. Barker Sub 580 2040 --- 2620

LSD (t .05) 750 640 220* 1050

tPounds per acre X 1.12 = kilograms per hectare.

tStatistics for 11 June calculated only on those still present on 11


June.

PLANTED: November 15,

SOIL: Tifton sandy


1995.

loam (Plinthic Paleudult).









Table 6. Observation of OK906 agrotricum and wrens abruzzi rye, WFREC, Jay. 1996.

Dry Matter

Pounds per rowt

Entry 29 April 96 22 May 96 19 June 96 Total

Wrens abruzzi rye 1.52 0.32 0 1.84

OK906 agrotricum 0 0.56 0.26 .82


.56


LSD (t .01) ----

tFour replications of rows 16' long spaced 3' apart.

PLANTED: January 22, 1996.

SOIL: Tifton sandy loam (Plinthic Paleudult).




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