The law requires that there shall be affixed to every package of fertilizer offered for sale a statement about as follows:
The minimum per centum of each of the following constituents which may be contained therein:
(a) Nitrogen.
(b) Soluble, available and total phosphoric acid, except in cases of undissolved bone, basic slag phosphate, wood ashes, unheated phosphate rock, garbage tankage and pulverized natural manures, when the minimum per centum of total phosphoric acid may be substituted. This latter applies only in those states where raw materials are subject to inspection.
(c) Potash soluble in distilled water.
It is possible to comply with the law and yet state the guarantee upon each bag of fertilizer in such a manner as to mislead the uninformed. It is not the purpose of this book to deal with such technical details, but if the purchaser of commercial fertilizers is not already well acquainted with fertilizer terms, he should secure an elementary textbook on the subject or write to his state experiment station for a bulletin discussing them.
FEEDING STUFF CONTROL
The law controlling the sale of stock foods is of more recent origin than the fertilizer control act and has not been so universally adopted up to the present time. The necessity for such a law arises from the growing use as stock foods of various by-products in the manufacture of liquors, starch, glucose, sugar, cottonseed and linseed oils and breakfast foods. Various mixtures, varying widely in chemical composition, especially in protein and crude fiber, were placed upon the market. In some instances mixtures were grossly adulterated with such things as oat hulls and ground corn cobs.
The adoption of this law by certain states has served to make other states the dumping ground for inferior stock foods, thus increasing the necessity for similar protection. The law does not apply to the ordinary grains produced by farmers or to the usual by-products of millers.
SEED CONTROL