Bulletin Volume 11-19 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1893 Excerpt: ...that there are no indications of a decided character, the advantage alternating between the two forms of nitrogen. (5) The greatest absolute increase was the result of--r 3 doses of superphoshate 468 pounds. 78 130 i The next largest was--r 3 doses superphospate 468 pounds. c-j 1 dose mur. of potash 39" I0 2 doses nitrate of soda 130" Total 637 Increased yield 860 pounds cotton. Value, at 2 cents per pound $17 20 The fertilizer cost 7 38 Profit $9 82 Coiftper pound seed cotton 8.5 mills. The next largest was--( 3 doses superphosphate 468 pounds. d. 1 dose mur. of potash 39" l-3 doses nitrate of soda 195" Total 702" Increased yield 843 pounds cotton. Value, at 2 cents per pound 16 86 The fertilizer cost 8 80 Profit. 18 06 Cost per pound seed cotton 10.4 mills. It would be easy to examine the table thus still further, and it may be dome by any one. It is remarkable that at the highest four yields above detailed in every cose there were three doses of superphosphate. It is further noted that the profits were in proportion to the increased yields. (6) The following will be found interesting: Per acre. Average yield of unfertilized plats was 1,300 pounds cotton. "" fertilized plats was 1,947"" Average increase 647"" Average Value of the increase $12 94 Average Cost of fertilizers 7 19 Average Profit $5 75 Avenge Cost per pound of seed cotton 11.1 mills. Conclusions. (1) That phosphoric acid is the most effective in increasing the yield of cotton on this soil. (2) That potash was not.required except when liberal amounts of phosphoric acid and nitrogen were used, when one dose of potash was moderately effective. The behavior of potash (muriate) is uncertain and even erratic, as shown by the absence of u...