Soils and fertilizers . oats was greater than from the additional 200pounds, and from the next 400 pounds the increase was ata still lower rate. This is best shown by a curve, which maybe seen in the upper part of Fig. 32. From the direction taken by the curve it may be seen thatfinally a point will be reached when there will no longer beany increase from larger applications of fertiUzer. Longbefore that point is reached, however, the use of the ferti-lizer ceases to be profitable. This may be shown by anotherdiagram containing curves for the value of the grain and thecost of the fertilizer. (
Soils and fertilizers . oats was greater than from the additional 200pounds, and from the next 400 pounds the increase was ata still lower rate. This is best shown by a curve, which maybe seen in the upper part of Fig. 32. From the direction taken by the curve it may be seen thatfinally a point will be reached when there will no longer beany increase from larger applications of fertiUzer. Longbefore that point is reached, however, the use of the ferti-lizer ceases to be profitable. This may be shown by anotherdiagram containing curves for the value of the grain and thecost of the fertilizer. (See lower diagram in Fig. 32.) This diagram as well as the last column of Table 44 showsthat the difference between the value of the product and the THE USE OF FERTILIZERS 217 cost of the fertilizer decreases after the lowest application, andthat for the very heavy application there is an actual loss. 275. Conditions that influence the effect of fertilizers. —The extent to which fertiUzers are utihzed by crops depends. ioo aoo TZoO TbSd aioo POONDS OF FLOATS ^fiPUCO PER y^CR£
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