Seasonal Nitrification As Influenced By Crops And Tillage
The book Seasonal Nitrification As Influenced By Crops And Tillage was written by author Jensen, Charles a Here you can read free online of Seasonal Nitrification As Influenced By Crops And Tillage book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Seasonal Nitrification As Influenced By Crops And Tillage a good or bad book?
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Only the dry weights are platted in the figure. A comparison of figure 1 and figure 2 shows the same general fact, namely, that the maximum amount of water-soluble nitrates in any soil layer is shifted every two weeks to the next lower layer. The detailed variations are about the same in the two plats, but there is one general difference — the date of the maximum- accumulation of nitrates in the respective soil layers in the two plats is shifted one week forward in the case of the spring-wheat ...i)lat — that is, each of the 6, 12, and 18 inch layers, respectively, attained its maximum 173 DISCUSSION OF RESULTS OP DETERMINATIONS. 15 accumulation of water-soluble nitrates just one week later in the wheat plat than in the fallow plat. It will be remembered that it was stated that the fallow plat was plowed to a depth of about 8 inches in the spring of 1908 and that the wheat plat had not been plowed since being backset in the previous fall to about 5 inches deep. There was thus a difference in the mechanical condition of the two plats; the summer-fallow plat being more open and stirred to a greater depth, there was presumably a more rapid access of air, and in consequence a more rapid rise in temperature.
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