
          387

Amount of P2O5 & K2O in New Jersey Soil.

Dr. Peter Collier made a series of analyses
of the "light sandy soils of Rio Grande,
in Cape May Co." N.J. with the following
results per cubic foot, weighing about 100#.

maximum
P2O5 %: 0.088
K2O %: 0.238
Nitrogen %: 0.128

minimum
P2O5 %: 0.024
K2O %: 0.061
Nitrogen %: 0.045

"Calculated on a depth of nine inches,
Each acre contains 32,670 cu. ft. which
weigh 3,267,000 pounds." * * *

"These percentages, calculated upon the
total weight of soil per acre, give the following
as the absolute amounts of plant-food 
present"

maximum
P2O5 per acre: 2,875 lbs
K2O per acre: 7,775 lbs.
Nitrogen per acre: 4,182

minimum
P2O5 per acre: 784 lbs
K2O per acre: 1,993 lbs
Nitrogen per acre: 1,470

See 7th Ann. Rep. N.J. Agric Exp. St. 1886, p. 173
        