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yields in terms of bushels, tons, or grazing capacity. What analysis and amount of fertilizer, kind and amount of lime, has been applied in the past three years. Also any special crop conditions you may have noticed such as firing of- the lower leaves of corn, lodging of small grains discoloration of leaves, -etc. (Test results are like reading a thermometer, your doctor must know more before he can prescribe medicine. He gets your performance history.)
Yields give me insight on what has been taken from the field. . nitrogen, phosphoric acid, potash salts, etc. Second: I need to know what crop is to be grown. Different crops demand different amounts of the three major plant food elements: nitrogen, phosphoric acid and potash. Corn is a hog over nitrogen. Too much nitrogen can cause small grain to lodge. Alfalfa maintenance usually calls for more potash (about 2 to l)than phosphoric acid. etc. etc. Third: What soil types are being dealt with? Even when the pH, calcium and magnesium content levels are the same, different amounts of lime are needed if the soil; is a straight loam, a silt loam, or a clay loam. Also different soil types vary in their ability to hold fertility added. Although it will speed matters up, you don’t necessarily have to remember all soil types of each field, we can learn these by referring to our soil survey maps after you have pointed out the field. Always Remember: A soil test can be no better than the methods used in getting the sample. First. . in all cases get soil from as many different places
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