Dl2-Lancaster Farming Saturday, June 24,1989
Check Soybean Fields
For Nutrient Problems
Low soybean prices for the past
few years have caused farmers to
cut back on their fertilization.
USDA surveys of aimer use of
fertilizer on row crops reflect this
cut back. For example, in 1984
Arkansas farmers fertilized about
24 percent of the soybean acreage.
But in 1988, only 21 percent was
fertilized. Missisippi growers fer
tilized 40 percent of the soybean
acreage in 1984, but only 21 per
cent in 1988. The situation was
different in the Midwest because
most soybeans are grown in rota
tion with well-fertilized com. That
is not the case in the South.
Farmers have cut back on phos
phate and potash use on other
crops, too. While this decline in
soybean fertilization has been tak
ing place, there has been an in
crease in potash deficiency prob
lems on cotton, limiting yields and
profitability. Subsoil deficiencies
of potash have been related to the
increased frequency of deficien
cies in cotton.
Soybean producers need to
scout their fields for nutrient defi
ciencies this summer to be sure
that yields and profits have not
been limited by correctable nutri
tion problems. If deficiencies are
present, proper fertilization pro
grams should be followed to elim
inate the problem. Growers need
to be aware, too, that borderline
potash deficiencies in soybeans
were worse when certain herbi
cides were used in 1987 and 1988.
Early scouting of fields this
year can provide timely detection
of yield-limiting nutrient prob
lems. Plant analyses can help di-
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i? 'j^||
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548 New Holland Ave
Lancaster PA 17602
(717)393 3612
Along Rte 23
Early Morning or Evening Call 717-345-8795
We Serve PA & Surrounding States
i Contact our Representatives in—
So. Chester Co., PA
Dick Breckbill 215-932-3307
Mt. Bethel, PA
Bill Korp 717-897-5283
Bradford Co., PA-
Joel Histand 717-247-2174
New Milford, PA ,
Joe Sega.7l7-465-75^6
agnose those problems and others
that may not be readily apparent.
Early diagnosis may allow correc
tive actions during the current
growing season.
In Brazilian soybean fields a
potash deficiency, called green
stem, has been reported in recent
growing seasons. After physio
logical senescence, deficient
plants continue to have green
stems and retain leaves, some re
maining green in color. Some soy
bean varieties planted in Brazil
have genetic backgrounds similar
to those grown in the southern
U.S. Farmers should be on the
lookout for green stem in their
fields in the fall of 1989. Such in
cidences could be reported to local
Extension specialists, fertilizer
dealers or the Potash & Phosphate
Institute (telephone number 404-
634-4274).
Potash is an essential nutrient
that can be effectively applied to
deficient soybeans during the
growing season. In Arkansas, Ex
tension specialists report that soy
beans diagnosed as deficient in Ju
ly responded to potash fertilizer
applied July 29, producing yield
increases ranging from 18 to 26
bushels per acre.
Many growers scout their soy
beans for insect and disease pests.
That is the time to be looking for
yield-limiting nutrient deficien
cies as well. Scout early so correc
tive measures can be taken in the
current growing season. Remem
ber that it pays to identify and act
early on factors that are limiting
your yields.
Clfi| ff.
WATER SYSTEMS
Lancaster Co., PA
Service:
Richard Landis 717-665-7405
Sales:
Thomas Heist 717-354-8182
. Belleville, PA.
Trennis King 717-935-2786
Union County, PA
Martin Beachy, Jr.
, 717-966-1191
Virginia
Ron Me'lllnger 703-879-9958
740 E Lincoln Ave
Myerbtown PA 17067
171 7)866 7555
Along Rte 422
University Of Maryland Appoints Ag Ambassadors
ge of Agriculture student ambassadors at the University of
Maryland posed recently for their picture. Standing are, from left, Gary E. Seibel of
Knollwood, agricultural engineering senior; Christine A. Keppel, ag economics
senior; Cynthia G. Bailor, natural resources management graduate; Mildred A. Hay
man, natural resources management senior; and William R.*Reed 111, natural resour
ces management Junior. Seated are, from left, Brenda S. Irwin, ag economics fresh
man and Trisha E. Marsh, animal sciences freshman.
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(717) 665-6775
CRAFT-BILT
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FARM-HOME BUILDING
1242 Breneman Road
MANHEIM, PA. 17545
PH: (717) 665-4372
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Victorian Scraanad Gazabo