Bulletin Volume 157-188 (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. 1907 Excerpt: ...unless heavily fertilized with phosphates. Pages 1-4 Phosphates are Removed from Farms in the grains, milk, cheese and live stock sold and in the manures which are allowed to go to waste. A conservative estimate shows that 15,000,000 pounds of phosphoric acid worth $700,000 is annually Iosl from Wisconsin farms. The total loss through sales is 25,000,000 pounds and only 10.000,000 is returned in bran and other feed stuffs purchased and fed. On an average 100 acre dairy farm the annual loss is G30 pounds phosphoric acid and 000 pounds Is returned in feeds purchased, leaving a net loss of 30 pounds. On an average 100 acre grain farm the total loss is 615 pounds with none returned. Pages 5-S Experiments with Phosphate Fertilizers show that on old exhausted lands the application of 300 pounds per acre of acid phosphate greatly increased the yields. Even new lands are often deficient in available phosphates. Rock phosphate supplementing manure increases yields to a marked degree. Acid soils usually need phosphate fertilizers. Pages 9-13 Methods of Maintaining Soil Phosphates are two in number: the purchase of feeding stuffs containing phosphates and the purchase oi' phosphate fertilizers. By buying bran for feeding purposes phosphates may be maintained on dairy farms. By the purchase of fertilizers the phosphates of the soil may be absolutely maintained. The mest important phosphate fertilizers for Wisconsin farms are ground steam bone meal, raw rock phosphate, and acid phosphate all of which can be obtained at moderate cost. Pages 14-20 SOIL ANALYSIS The Soils department of this Station receives many samples of soil sent in from all parts of the state with the request that they be analyzed. When it is realized that the full analysis of a soil requires work exte...