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•re a aeciaea aid in my making *f e r 11 lizer recommendations that approach optimum rate levels. By optimum levels Is meant rates per acre that will tend to maximize profit. Let's get those soil samples In—frozen ground or land that is excessively wet makes soil sampling impossible or very difficult at best. Remember winter is as sure to come as
la spring planting^time.
The Virginia ACP Handbook for 1965 has some changes in It. One change which probably needs some explaining to some of our farmers pertains to fertilizer. Different fertilizer mixtures such as 5-20-10 or 3-18-18 are not approved as such for establishment of permanent vegetative cover, or for maintenance of permanent vegetative cover.
Instead you will And on page 18 of the Handbook that fertiliser cost-share rates are on a pound basis of N, P 2-0 5' anc K2-0.
Now you must learn a little about the chemistry of fertiliser materials particularly if you are going to be able to take advantage of better buys.
N is the symbol for pure nitrogen. There are several sources of nitrogen in commercial fertiliser goods, nitrate of soda, ANL, Ammonium Nitrate etc. These materials vary in the percent of N they contain.
Nitrate of soda contains 16% N, or in other words in every 100 Ibe. of nitrate of soda there la 16 lbs. of N; ANL has 20 lbs of N to the 100 lbs. and Ammonium Nitrate S3 lbs. of N pet 100.
ACP allowance to farmers for N is at two rates depending upon the practice (7c or 11c pet pound).
By checking with your fertili' ser supplier you'll And that al' N does not cost the same amount oa a pound basis.
P 2-0 6 is the chemical symbol for phosphoric acid, or in barnyard talk pure phosphate, in a
65.8%