Show animal fertilizer contains necessary food for plants plan ts by prof J C hogenson extension agronomist As time approaches for the start ing or of spring work and the planting of 0 spring crops the question naturally arises shall I 1 apply manure to my land from the pile that has been accumulating during the winter months every plant needs food most utah soils do not have a sufficient supply naturally available without enough food the crops will fill all to develop and produce profitably the application of farm manure supplies the food requirements of growing plants the following number of pounds of nitrogen phosphoric acid and potash the three plant food elements which are arc likely to be lacking in farm soils are found in each ton of ordinary mixed farm manure nitrogen 10 pounds phosphoric acid 5 pounds and potash 10 pounds in a ton of 0 cow manure there are 12 pounds of nitrogen 3 pounds of phosphoric acid and 9 pounds of potash in horse manure there are 12 pounds of 0 nitrogen 4 pounds of phosphoric acid and 12 pounds of potash in pig manure there are 10 pounds of nitrogen gah G pounds of phosphoric acid and 9 pounds of potash in sheep manure there are 16 pounds or nitrogen 7 pounds of phosphoric acid and 17 pounds ot of potash in poultry manure there are 20 pounds of nitrogen IS 18 pounds of 0 phosphoric acid and 10 pounds of potash in other words it takes pounds of mixed farm manure to provide one pound of nitrogen pounds to produce one pound of phosphoric add acid and pounds to produce I 1 pound of potash all manure should be spread on the land as soon as possible after it is produced to avoid waste of plant food |