. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. UNFAVORABLE FACTORS 83 If all the staves were as high as the concrete sides of the tank, the tank would then hold its greatest amount of water. If all the fertility factors were most favorable, the soil would have power for producing maximum yields. Just as the water-holding capacity of the tank may be limited by the shortest stave, so fertihty or the productive power of a soil may be limited or brought to naught by one deficient element or an unfavorable soil condition. Thus it is possibl
. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. UNFAVORABLE FACTORS 83 If all the staves were as high as the concrete sides of the tank, the tank would then hold its greatest amount of water. If all the fertility factors were most favorable, the soil would have power for producing maximum yields. Just as the water-holding capacity of the tank may be limited by the shortest stave, so fertihty or the productive power of a soil may be limited or brought to naught by one deficient element or an unfavorable soil condition. Thus it is possible for a soil to. Fig 33 —Soil fertility illustrated Just as the water-holdmg capacity of the tank may be hmited by the shortest stave, so fertility or the productive power of a soil may be limited or brought to naught by one deficient element or an unfavorable condition lose its fertility or productive power through the depletion or loss of a single fertilizing element. Unfavorable Factors.—Many soils are unproductive because one or more factors are unfavorable. In case of drained peat, the common cause of poor crops, or failures, is the lack of potassium. This condition can be corrected through the use of potash fertil- izers—or in terms in harmony ^ith Fig 33, the shortest stave may be lengthened by applying fertihzers carrying potassium. In many instances, poor yields and failures in growing alfalfa,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Weir, Wilbert Walter, 1882-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920
