HomeMy WebLinkAboutClinton News-Record, 1985-3-20, Page 48r
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nA ealntThl
Ming
,earizeetion,'S Were.
1t► 2. Loki Opted: iz5 +ate of Kira' -t
Qom and,, s of . no -till soybeans.
Included .8 gw nod WOsituatlons over
winchhela; 33aopt [bents. The results
after two p"ofwork very encourag-
ing, says b but not to the point where
caution could be abandonded."
The 1382 Huron County Soils and Cop
Improvement Association No -Till Project
added substance to this evaluation. No -till
yields were equal to or greater than'conven-
tional tillage more often than notin 1981,
however, there was no killing frost until
October 25. A normal September frost could
have changed the results somewhat where
early growth had been slow or uneven. The
potential for no -till was however well estab-
lished.
In 1983 Jane Sadler-fiidhards under the
direction off Dr. Teary Daynard gave much of
the no -till work on the Lobb farm a research
perspeetive - 28 treatmentsin all, including
cop hist9Jty,. effect on no=m ; cover mop
stn. ronvontronal till ram
and no -tett is .00nnentlonal tint ,sow an
un sed types -
of daJtton, Ibtr Siad corn v; ety trials,
no,tt ^vS ventiQn alis, WA* 1,41.9* and
nfz till y on foul' i� In contrast to
thevelY fav4uable no -tills *either in 1.82
(d3r at planting time followed by good
loPiStOre JeveLaan ja,iong.f ist free **OM;
19.84 n laroversp and areal learning
experience, says •Iobb. ^ • ee
Some observations Lobb has noted keep in
mind I:obb is not doing research but on farm
evaluation, under his management, for his
use. Observations are his own and data is
based on his own machine harvest results.)
—Where soil drainage or compaction are
problems, alternatives to no -till should be
used. In 1983 Lobb had some bare ages to
prove that.
--Next to drainage, crop sequence may be the
principle limitation factor in tillage system
choices. For example, no -till corn is best
following alnx)st any crop other than corn. In
1982, ' no-tiJ corn after no -till soybeans
yielded 13 per cent higher than after no -till
coati. In 1983, .no -till corn following soys
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l i tend
Platter
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1:982 ACAS were WPM YeeTen per lit
on sandybamapesi t on sit day by
using these coshdea„p15 20
ceighOedee. Thin was tbe.narhYletOnereMe
registered When they eomPareitthe nseoff'
starter fertilizer vs no starter fertiliz:on an
adjacent site. Inbb believe§ it is important, at
least in the beginning with actin, to apply all
of their Pplussome Nand K with the Planter,
at least to soil test recomniended.level. 1983
soil testing along a no -till vs conventional till
jlaaUion on one site (sandy loam -clay loam)
indicates under his fertility "ram, there
has been no relative change in fertility or pH
will drop to unmanageable levels end no -till
fertility will be concentrated at the surface -
unlike conventional till.
--A series of nitrogen fertilizer trials in 1982,
which included both NH3 and 28 per cent
indicated likely losses of N when 28 per cent
was broadcast sprayed over corn stalk
rest,SIS Lobb :POOL foundteen yield
4t i,one sits : In t38
b� sown' r'AP Igo
With 28
per ,dent td !l its•
One anoth i r he W te
m u spit . -
--Co er ps, 'a<ppebleanwherekill
is too ` late. In .1982, iobb had yield
depressions of 13 - f7 per, mut and natisstvre
inereases of .9 3.5 per cent when' planted is
grass legume hay and rye when growth was
too advanced vs —till on relatives bare
ground. Shading and or.allelopathic effects off
decaying vegetation are likely causes. A 10
day before planting kill of rye in 1982 produc-
ed a dramatic improvement in crop peafomo-
ince - panic ulerly on low organic soil. Fall or
early spring kill of grass and legumes seems
most effective and less expensive.
--Herbicide application with 28 per cent N as
a carrier, has been unreliable for Lobb. Of the
variety of procedures which he has died, the
post -emerge type is most effective and when
used with precision and care, has not
increased his weed control costs. Ftrennials
are often cued as a no -till problem. Lobb has
tuna to page 20
a a
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