AMERICAN AGRICULTURIST. 
impeft ta tntjrralre tjje fanner, tlje ff(anter, anfr tlje (ferkner. 
agriculture is the most healthy, the most useful, and the most noble EMPLOYMENT of MAN.— Washington. 
ORANGE JUDD, A. M. 
CONDUCTING EDITOR. 
Published Weekly by Allen No. 189 Water-st. 
i UNDER THE JOINT EDITORIAL SUPERVISION OF 
A. B. AI.LEN & ORANGE JUDD. 
VOL XIII.—NO. II.] 
NEW-YORK, WEDNESDAY, NOV. 22, 185-1. 
[NEW SERIES.—NO. 63. 
.far |Jro 0 pcctu 0 , <iTmn 0 , &c., 
jy SEE LAST PAGE, 
CONCENTRATRD FERTILIZERS ON CORN 
We recently reported an experiment with 
these fertilizers upon grass. A friend has 
applied them to corn, and put them in com¬ 
petition with stable-manure, sending us the 
results, in a letter, which was not quite so 
carefully written as his experiments were 
conducted. He is a careful and observing 
cultivator of the soil, and we have entire 
confidence in the accuracy of his statements. 
It will be seen that these manures are as 
good for corn as grass, and that, if one is 
under the necessity of purchasing, they are 
much cheaper than stable-manure, at fifty 
cents per half cord, at the place of delivery. 
His standard for comparison is stable ma¬ 
nure, spread in the field, at one dollar a load, 
[4 a cord.] His experiments are highly in¬ 
teresting, and will bear study. He writes : 
For the full understanding of these exper¬ 
iments, I will state that, the ground selected 
was sward land, and what I should call a 
gravelly loam. It was plowed about the 
20th of May last, in strips one rod wide, and 
planted four rows to each breadth, with me¬ 
dium-sized yellow corn. 
The stable-manure was taken from a heap 
outside the barn, made from good hay fed to 
neat cattle, nearly free from litter, and 
drawn in a common ox-cart, and spread on 
the land before plowing. 
The manure, from grain fed to swine, was 
made in a covered pen, with tight plank floor, 
and soil from the fields used as an absorbent. 
The bones w-ere dissolved in sulphuric acid, 
mixed with twice its quantity of water. 
I have estimated the yield by husking On the 
hill, and counting eighty pounds of sound 
ears a bushel, and have brought both the 
crops and fertilizers to acres. I used both 
De Burg’s and Mapes’s superphosphate of 
lime, but found so little difference in the ef¬ 
fect that I have not encumbered the state¬ 
ment with the amount of each. In order to 
ascertain the exact value of the fertilizers, 
or their comparative value, it will be neces¬ 
sary to keep an account of the crops, as long 
as there is a difference between the manured 
and unmanured parts of the field. 
Every one acquainted with our hard soil, 
knows that, as respects the stable-manure, 
it would take ten years to exhaust it. After 
using some thirty tons of guano, during a 
period of eight years, I am confident that its 
beneficial effects will be seen on the soil as 
long as stable-manure. In the following ex¬ 
periments, T think only one half the cost of 
the fertilizers should be charged to the first 
crop. I have no doubt that, three years’ trial 
will show that this is more than belongs to 
it. I estimate the value of the stable-manure 
at one dollar a load spread upon the ground; 
the superphosphate at 2-1 cents a pound; the 
guano at 24 cents, and the dissolved bones 
at H cents a pound ; the leached ashes at 6 
cents a bushel; the value of the manure, 
made from a bushel of corn fed to swine, at 
15 cents. 
I had one strip plowed twice the usual 
depth, and the consequence was a diminu¬ 
tion of the crop one quarter. I do not men¬ 
tion this as an objection to deep plowing. 
It requires no experiment to show that six 
inches of good soil is more productive than 
the same soil mixed with six inches of dead 
earth. It is equally evident that a soil 12 
inches deep, is much more valuable than one 
0 inches, of the same composition. 
EXPERIMENTS. 
No. 1—No manure ; yield, 28 bushels. 
No. 2—500 pounds of superphosphate of 
lime ; yield. 46 bushels. Increase of crop, 
18 bushels. Cost of fertilizer, $12 50. In¬ 
crease for each dollar, one bushel and 14 qts. 
No. 3—690 pounds of guano ; yield 501- 
bushels. Cost of fertilizer, $19. Increase 
of crop, 221 bushels. Increase for each dol¬ 
lar, one bushel and 6 quarts. 
No. 4—300 pounds of superphosphate and 
640 of guano ; jield, 58 bushels. Cost of 
fertilizers, $25 10. Increased yield, 30 
bushels. Increase for each dollar, one bush¬ 
el and 64 quarts. 
No. 5—320 pounds of guano, mixed with 
640 of dissolved bones; yield, 51 bushels. 
Increased yield, 23 bushels. Cost of fertil¬ 
izers,$18 40. Increase per dollar, one bush¬ 
el and 8 quarts. 
No. 6—1,040 pounds of guano and 400 of 
superphosphate; yield, 742 bushels. In¬ 
crease, 461 bushels. Cost of fertilizers, 
$38 60. Increase per dollar, one bushel and 
6$ quarts. 
No. 7—16 loads of stable-manure; yield, 
354 bushels. Increased yield, 74- bushels. 
Cost of manure, $16, Increase per dollar, 
15 quarts. 
No. 8—32 loads of stable-manure ; yield, 
424 bushels. Increase, 144 bushels. Cost 
of fertilizer, $32. Gain per dollar, 144 qts. 
No. 9—16 loads of stable-manure and 200 
bushels of leached ashes ; yield, 44 bushels. 
Increased yield from ashes, 84 bushels. 
Cost of ashes $12, Gain per dollar, 224 qts. 
No. 10—10 loads of stable-manure and 640 
pounds of superphosphate ; yield, 494 bush¬ 
els. Cost of superphosphate, $16. Gain 
per dollar for superphosphate, 28 quarts. 
No. 11—32 loads of stable-manure, 320 
pounds of guano and 320 of superphosphate ; 
yield, 60 bushels. Increase for superphos¬ 
phate and guano, 174 bushels. Cost of gu¬ 
ano and superphosphate, $16 80. Gain for 
each dollar, one bushel and 4 of a quart. 
No. 12—640 pounds of meal fed to swine, 
equal to 108 bushels of corn ; yield 43 bush¬ 
els. Increase, 15 bushels. Cost of manure, 
$16 20. Gain for each dollar, 30 quarts. 
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It is worthy of notice, in this table, that 
you get your money back again for manure, 
just as surely, when you apply it in large 
quantities, as in small. The 16 loads of ma¬ 
nure gives you 15 quarts for a dollar, and 
32 loads 144 quarts.. In three of the experi¬ 
ments with guano, you get about one bushel 
and 6 quarts for one dollar, The economy 
of home-made superphosphate, to be used 
with guano, is clearly shown. 
We are much obliged for these valuable 
experiments, and hope to hear from this cub 
tivator often. 
