. The Bulletin of the North Carolina Department of Agriculture. Agriculture -- North Carolina. 18 The Bulletin. The following materials were used as carriers of the different ele- ments of plant food: Dried blood for nitron-en. Acid phosphate for phosphoric acid. Potassium sulphate for jDotash. Rock lime for lime. The rate of application is based on the amount of the various plant foods known to be removed by maximum crops. In the case of corn 100 bushels was taken as a maximum yield. This may seem high to some but many such yields are yearly obtained in the State and over twice this amount ha
. The Bulletin of the North Carolina Department of Agriculture. Agriculture -- North Carolina. 18 The Bulletin. The following materials were used as carriers of the different ele- ments of plant food: Dried blood for nitron-en. Acid phosphate for phosphoric acid. Potassium sulphate for jDotash. Rock lime for lime. The rate of application is based on the amount of the various plant foods known to be removed by maximum crops. In the case of corn 100 bushels was taken as a maximum yield. This may seem high to some but many such yields are yearly obtained in the State and over twice this amount has been produced on a measured acre. Even on this very much depleted field, we obtained a yield of nearly GO bushels by the use of commercial fertilizers alone. In order to secure the required amount of plant food it was necessary to apply the fol- lowing amounts of materials: Dried Blood—1,0C2 lbs. Acid Phosphate—350 lbs. Sulphate of potash—170 lbs. Lime was applied at the rate of 1,000 pounds of rock lime per acre. The following table gives the treatment and the yield of each of the plats: TABLE 1. RESULTS ON PORTER'S CLAY. CHAS. BALDWIN'S FARM, BLANTYRE, TRANSYLVANIA N. C. Plat No. TREATMENT. Yield per Acre. Grain. I Stover. Bushels. Pounds. Increaae. Grain. Stover. Bushels. Pounds. 1 2 3 4 5 6 7 8 9 10 11 12 None Lime (CaO) Nitrogen Phosphoric Acid- Potash - None Nitrogen, Phosphoric Acid- Nitrogen, Potash Phosphoric Acid, Potash Nitrogen, Phosphoric Acid, Potash- None - Lime, Nitrogen, Phosphoric Acid, Potash 1590 2030 2020 2200 1180 1340 3360 2810 2130 3240 1370 3850 440 j 430 860 — —160 2020 1470 780 1870 2480 Average gain for Nitrogen Average gain for Phosphoric Acid- Average gain for Potash Average gain for Lime (CaO). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and
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