Show pam aa aka aman s bomm K R 0 county agent farmers of utah should beware of anyone attempting to sell them raw rock phosphate as fertilizer warns E 0 biggs san luan uan county agent according to dr D ww athorne WT thorne horne head of the agronomy department part ment raw rock phosphate is worthless in utah soils biggs said the phosphate is combined in rock form which changes to soluble forns forms only under the action of acid utah soils are neutral or alkaline and rock phosphate ate remains rock in our soils dr therne explained plants cannot feed on the fertilizer lacked locked in rock phosphate experiments conducted brusac byU SAC by the university of idaho idah 0 and the university of arizona hive have all shown that ground rock phosphate will not increase crop yields on our soils he reported on the other hand super phosphate doii doubled bled the yield on the same soils an in one test in cache valley a moderate application of increased alfalfa yields two tons per acre but a treatment tre ament with five tons of ground rock phosphate per acre less than ten feet away gave no increased yield dr thorne declared declai ed dont be a sucker save your money if you need a phosphate fertilizer b buy u y money spent for raw rock phosphate in utah is money wasted |