Bulletin - Alabama Agricultural Experiment Station of the Agricultural and Mechanical College, Auburn Volume 122-138 (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. 1908 Excerpt: ...E. J. DafHn 1901 Washington.Carson R. D. Palmer 1904 The directions sent required each plot to be one-eighth of an acre in area-. Rows were 3 1-2 feet apart, and each experimenter was advised to so thin the cotton as to leave the same number of plants on each plot. preferable at distances of 18 inches between plants. The directions stated that laud employed for this test should be level aad uniform, not manured in recent years; and not new ground, or subject to overflow, and that it should be representative of large soil areas in its vicinity. 'The need of perfect uniformity of treatment for all plots (except as to kinds of fertilizers used) was emphasized. Fertilizers were applied in the usual manner--that is, drilled. In the summer of 1902 occurred a drought of unprecedented duration. This was general and in many localities there was little or no rain from April to August. Hence results of that year should be given less weight than those for the other years. In 1904 there was a deficiency of rain in spring and an injurious drought beginning about the middle of August. The Fertilizers Used. The following prices are used, as representing approximately the average cash price in local markets during thelast few years: Per Ton. Acid phosphate (14 per cent. available) $14,00 Cotton seed meal 22.00 Kainit 15.00 Prices naturally vary in different localities. Any one can substitute the cost of fertilizers in his locality for the pricegiven above. In each experiment two plots were left unfertilized, these being plots 3 and 8. The following table shows what kinds. and amounts of fertilizers were used on certain plots; the number of pounds of nitrogen, phosphoric acid, and potash supplied per acre by each fertilizer mixture; and the percentage composition and cost pe...