xt7w9g5gcz20 https://exploreuk.uky.edu/dips/xt7w9g5gcz20/data/mets.xml   Kentucky Agricultural Experiment Station.  journals kaes_circulars_004_506 English Lexington : The Service, 1913-1958. Contact the Special Collections Research Center for information regarding rights and use of this collection. Kentucky Agricultural Experiment Station Circular (Kentucky Agricultural Experiment Station) n. 506 text Circular (Kentucky Agricultural Experiment Station) n. 506  2014 true xt7w9g5gcz20 section xt7w9g5gcz20   A A A JW F   AL     A A . .AA.A`     4   A.? A ,
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than Ky 102 or Ky 103. It is recommended where planting ir `
A 6

 ` I
der ` delayed or where it is desired to get the corn crop off early to I
~ sow the land to a cover crop. I
be Ky 103 is becoming one of the most popular hybrids in
last K Kentucky. It is slightly taller than US 13 and reaches maturity
lum  t about 3 days later. ~ {
’ be Q Ky 102 is the latest maturing yellow hybrid. It produces well  
the on soils with high fertility and moisture, but stands up poorly.  
lt is a vigorous grower, has tall leafy stalks with plenty of foliage, lg
and is recommended as a silage corn. Ears are long, tapering,  
md- and quite resistant to ear—worm and other insect damage. It is  
,, in . an lixcellent liyli{‘1cltfpi‘dt§iose wishing to produce a good crop as  
we as an exce en o er.
6 Though the yellow hybrids usually mature earlier than whites "
leaf and are higher in feeding value because of their carotene and i
_ yitamin—A content, demand for white corn is increasing. White i
EWS hybrids normally produce higher yields and sell at a higher price  
*th€`l` ` because of increasing demand for milling purposes. li
_ Indiana 750B is a low-eared, early maturing white hybrid yi
mm" which yields well and stands up well for mechanical harvesting.  
ml lt does well under moderate moisture and fertility conditions.  
_ dis- _ Ky 203 is a medium early vigorous grower, has a strong stalk, il
' and yields well. lt is a good fodder producer, and is dependable
on a wide range of soils. - i
Ky 405B is slightly later in maturity than Ky 203 by virtue
of holding its green color longer. lt stands well and carries the i
tugcfi _ FMS low on the stalk. However, it is not planted extensively
ti <*< uecause of seed production difliculties.  
'l°"'d‘ . US 523W, certified since 1950, is gaining wide acceptance
 E in Kentucky and several adjoining states. It is a high—yielding  
  hybrid with an excellent stalk, is low eared and well adapted to
. {mechanical harvesting. lt is similar in maturity to Ky 203, but
loscly l las a somewhat harder grain.  
> pro-   y
i Get ¤ Good Stand r
.5 and  T The b€$t )’l€‘l€lS Oi COl`11 z1l`€‘ made Only Where there are cnougli
to bc 4 Dltillfs to fully utilize the plant food and moisture available in thc
VtuCk\. g $011- The right number of plants varies with the fertility of the
mg {5  L $011. On soils of very high fertility capable of producing over

 ll
l 100 bushels per acre, 15,000 plants are needed for the highest
l yield. On soils of moderate to low fertility, capable of produc-
  ing less than 50 bushels per acre, 7,500 plants are enough. In the  
l table below is shown what is regarded as the best spacing of  
plants in rows   feet apart for producing highest yields of hy-  ll 
brid corn on soils of different fertility levels.  
l Distance between. Approximate number ll  ·»  t
Estimated plants, drilled of plants l r 
yield 00m per acre 5   
Below 50 bushels .................................... 20 inches 7,500  
50-80 bushels ............................................ 15 inches 10,000  
~ 80-100 bushels .......................................... 12 inches 12,500  
Over 100 bushels ..........,........................... 10 inches 15,000 . ¥  
E  » 
lf rows are spaced closer than   feet, distance between   °ls l’ °
plants in the row should be increased accordingly. About the  
same number of plants per acre should be grown where corn is  `llgfi
planted in hills. Three plants per hill in hills 3% feet apart each
way equals approximately 10,500 plants per acre.
Good stands are obtained by good seedbed preparation, use .
of efficient machinery, care in planting, good seed, and control
of seedling insects and diseases. Most certified seed corn is well
graded and treated for seedling diseases. Corn should not be
planted until a proper seedbed can be prepared and until the
h soil is warm enough to cause the COl'11 to sprout within one week.
Control Weeds y
\Veeds in corn compete with the crop for both moisture and
plant food. Good preparation of the seedbed and early cultiva- y
tion of the crop are essential to control weeds. The vigorous
growth of a thick stand of corn on fertile land should make fre- .
quent and late cultiyations unnecessary. Cultivation in general
V should be shallow to avoid cutting the roots of the corn, and no .
more than enough to control weeds. ;
Supplemental control with herbicides may be advisable wlierv
broadleaf weeds compete with corn for moisture and plant food.
L("XlHgtOl1, KCDtllL`k}`
]unc, 1953
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