. The nature and properties of soils; a college text of edaphology. Soils. 494 NATURE AND PROPERTIES OF SOILS is reached, the return for each added increment of fertilizer becomes less and less. It is evident, therefore, that with an excessive application of any mixture, the returns to an in- crement will at last become so small that the increased crop fails entirely to pay for even the fertilizer, not to mention ts \ 3 ns _â ^ ^ ⢠ji ^âd 'â "sc w ' /zoo ' /60P zooo Z4aO POatWS OP FLOATS J^PPtmO PER. ^CfZ£. 44)0 ado moo j60o sooo s^oc POUfiDQ OP PLO/iTS PPPUED PEfS PC/^S: Fig. 60.âIn th
. The nature and properties of soils; a college text of edaphology. Soils. 494 NATURE AND PROPERTIES OF SOILS is reached, the return for each added increment of fertilizer becomes less and less. It is evident, therefore, that with an excessive application of any mixture, the returns to an in- crement will at last become so small that the increased crop fails entirely to pay for even the fertilizer, not to mention ts \ 3 ns _â ^ ^ ⢠ji ^âd 'â "sc w ' /zoo ' /60P zooo Z4aO POatWS OP FLOATS J^PPtmO PER. ^CfZ£. 44)0 ado moo j60o sooo s^oc POUfiDQ OP PLO/iTS PPPUED PEfS PC/^S: Fig. 60.âIn the upper diagram the heavy line indicates the increase m the yield of maize due to graduated applications of floats. The lower diagram shows how the cost of the fertilizer approaches and finally exceeds the value of the crop as the applications increase in size. such charges as cost of application, harvesting of increased crop, storage, and the like. The application of moderate amounts of fertilizer is to be urged for all soils until the maxi- mum paying quantity that may be applied to any given crop is ascertained by careful experimentation. Over-fertilization probably accounts for the fact that such a large proportion of. 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 Lyon, T. L. (Thomas Lyttleton), 1869-1938; Buckman, Harry Oliver, 1883-. New York, Macmillan
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Keywords: ., bookauthorlyontlth, bookcentury1900, bookdecade1920, bookyear1922
