Lamesa, Texas
February 17, 2004
Producers can achieve profitable
results from grazing winter forages if they match available
small grains to their management strategy, according to a Texas
Cooperative Extension agronomist.
"There are several types of small grains that can provide
cool-season forage for grazing. Among these are wheat,
triticale, rye, oats and barley," said Calvin Trostle, Extension
agronomist based at Lubbock. "Wheat is the obvious choice for a
dual-purpose grazing and a grain crop. Rye and barley may
produce more fall forage, but they are subject to winterkill.
Ryes and some triticales can offer more forage through the
winter."
Trostle was one of seven featured speakers at the recent
Southern Mesa Agriculture Conference here. More than 150
producers attended the conference for updates on cotton, grain
sorghum and peanut production, insect and weed control options,
brush control, and cattle and forages.
"Barley tolerates saline soils, can be planted in August and
will provide good fall grazing. Rye is a cold tolerant,
early-maturing forage that will grow in poor soil," Trostle
said. "Early indications are that some triticales can produce
the most forage, but the quality may be lower than wheat."
Regardless which forage they choose, producers should evaluate
seed quality carefully when making variety selections –
especially where fall forage production is desired.
"With wheat, seed quality is the best investment you can make.
We want at least 85 percent germination, and a test weight of 58
pounds per bushel," Trostle said. "If germination or test weight
is questionable, you should consider planting treated seed at
higher-than-normal seeding rates when soil conditions are
optimal.
"For forage production, we recommend a seeding rate of 45 to 70
pounds per acre for dryland wheat and 100 to 120 pounds per acre
for irrigated wheat. Early to mid-September is ideal time to
plant wheat for grazing on the South Plains. With later
planting, you may want to raise your seeding rate by as much as
one-third."
Jagger, TAM 202, and beardless Longhorn are good varieties for
dual-purpose forage and grain production. Other beardless
wheats, however, are not recommended as a dual purpose crop but
are suitable if a grain crop is not desired, he said.
"Greenbug resistance is another important consideration for
dryland or irrigated production. TAM 110 is a greenbug resistant
variety that does well in this area," Trostle said. "We are
testing the forage production of so-called modern beardless
wheats such as Lockett, Longhorn, or TAM 109 versus conventional
Russian beardless wheats. Beardless wheats in general are
preferred if you plan to graze-out or hay your wheat."
Producers can plant small grains for grazing about three to four
weeks earlier than they would plant for a grain crop, as long as
soil temperatures at a 4-inch depth are below 75 F. Temperatures
higher than 75 F will reduce germination, the agronomist said.
"It's best to soil test to determine what nutrients you should
provide in the fertilizer mix. A good rule of thumb for wheat is
to apply 1½ pounds of nitrogen for every bushel of desired grain
yield minus any residual soil nitrogen," Trostle said. "If
forage production is your goal, remember that up to 60 pounds of
nitrogen is necessary for each ton of dry forage yield.
"If your soil test indicates a need for phosphorus, consider
deep placement rather than a broadcast application to put this
nutrient closer to the plants' roots."
Producers who want to split their nitrogen application can apply
a sidedress application in February, when plants reach stage
five on the Feekes wheat growth scale, he said.
"If you want your wheat to produce a grain crop, you need to
terminate the grazing period just before the plants reach
jointing – when the tiny, immature grain head can be seen inside
a split-open stem," Trostle concluded. "And if haying is your
intention, remember that small grains are like other forages.
You will get a higher protein content by cutting before the
plants reach full maturity.
"Wheat, for example, can achieve a protein content of 18 percent
as it reaches the boot stage."
Producers can access a full complement of wheat and small grains
information on the Internet at:
http://lubbock.tamu.edu/wheat.
Writer: Tim W. McAlavy (806)
746-4051, t-mcalavy@tamu.edu
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