1. Produce Bigger Yields. A G.L.F. adapted hy- 
brid corn will produce more grain or more silage 
per acre than open-pollinated corn—10 to 25% more 
in most cases. The extra cost of seed is returned 
many fold. 
2. Easier Harvest. G.L.F. Hybrids stand up. They 
produce strong, sturdy stalks and roots which make 
harvesting easier and faster. 
3. Fit Your Farm. The best hybrid is the one that is 
particularly adapted to the growing conditions on 
your farm. If you are growing corn for silage, it 
should reach the dough stage at normal silo filling 
time. For grain production a hybrid should be se- 
lected t» ripen safely before frost. 
Within the next few weeks a G.L.F. Hybrid Corn 
chart will be posted in your G.L.F. Service Agency. 
From it you will be able to select the right hybrid 
for your farm. 
The employees in your Service Agency know 
G.L.F. Hybrid Corn varieties. They will be glad to 
help you in the selection and will have the hybrids 
on hand for you when you want them. 
Recent research indicates that on the more pro- 
ductive soils, substantial increases in yields may be 
A crop of corn that will yield 15 tons of silage or 
150 bushels of ears to the acre requires about 120 
pounds of available nitrogen. Good corn land is the 
first requirement for such yields. The 120 pounds 
of required nitrogen might then be furnished as 
follows: 50 pounds from an average good sod con- 
taining some legumes, 60 pounds from 12 loads of 
superphosphated manure (manure contains twice 
this amount but this is all that is normally available 
the year applied), and 8 to 12 pounds from the 
application of 200 pounds of 6-12-6, 5-10-5 or 4-12-8 
commercial fertilizer in the row. 
Recommendations generally call for about 200 to 
- 500 pounds to the acre of 10-10-10, 5-10-10, 5-10-35, 
6-12-6, 4-12-8 or 4-12-4 with normal manuring on a 
good sod. The higher nitrogen grades and rates are 
preferred where manuring has been light. One hun- 
obtained in many instances simply by increasing the 
planting rate. This does not mean that all farmers 
should plant corn thicker for some plant it too thick 
already. 
The number of stalks per acre rather than the 
exact spacing seems to be the important factor. 
Cornell agronomists recommend 18,000 stalks per 
acre as about the maximum on the more productive 
soils and about 14,000 stalks per acre for average 
conditions. Pennsylvania extension agronomists fee] 
that 14,000 is the top for the most productive soils 
with 10,000 about right for normal conditions. 
In New Jersey most corn is planted in hills. 
Recommendations are—heavy fertile soils, drop 
three seeds per hill in 3 to 314 foot rows. On light 
soils, drop 3 seeds per hill in 314 to 4 foot rows. 
The following table shows the number of seeds 
per hill with different planting rates. A pound of 
seed corn contains 1200 to 1800 kernels, depending 
on the graded size. Many authorities fee] that under 
ordinary planting conditions 100 seeds will produce 
80 plants. The planter should be checked with each 
lot of seed. 

RATE OF PLANTING 







Stalks per Acre 42” Row PLA 2S SURI COU Somes Om 
7,000 (thin) 21.0” apart 2 stalks 23.5” apart 
9,000 16.5” “ 18.5” “  2stalks 
11,000 : 1; Sie Bogle Was” 
13,000 kay’ 3 Oe 3 stalks 
14,000 WOES Aver ese SI) 
18,000 Sy Waa 4 stalks 
RECOMMENDATIONS 
dred pounds of 10-10-10 will replace about two tons 
of manure the year applied but will not have as 
much residual effect the following year. Unless the 
planter places the fertilizer 1% to 2 inches to the 
side of the seed no more than 200 pounds of 10-10-10 
or 3800 pounds of the other mixtures should be 
applied with the planter. Any additional quantity 
should be applied separately. 
High nitrogen grades are likely to be short. Good 
substitutes for 10-10-10 are 6-12-6, 5-10-5, and 
5-10-10. 
Sidedressing at Last Cultivation. on light 
sandy scils where little if any manure has been ap- 
plied, side dressing at the last cultivation with 100 
to 150 pounds to the acre of ammonium nitrate is 
often desirable. (See Page 14 for a report on the 
fertilizer situation.) 
