THE DYNAMICS OF THE EXCHANGE OF POTASSIUM AND A BALANCE OF NUTRIENTS IN LEACHED CHERNOZEM UNDER GREEN MANURING
https://doi.org/10.31677/2311-0651-2019-24-2-138-144
Abstract
<p>In field studies found that when plowing green mass of green manure in leached Chernozem accumulates from 60 to 140 kg/ha of potassium exchange. Most of it is found in green manure pairs with phacelia and pea mixture. Only a couple of phacelia creates a positive balance of potassium in the soil, in other pairs, the deficit amounted to 30–80 kg/ha. Stocks of nitrate nitrogen in the soil was varied in the range of 60–80 kg/ha, and the highest they have been in the green manure a couple of phacelia. Nitrogen balance in soil in all green manure pairs is positive. The reserves of mobile phosphorus in pairs made up of 12–15 kg/ha, and its deficiency is 50–80 kg/ha. maximum yield capacity of wheat and its addition to a clean pair obtained in the green manure a couple of phacelia – 25 and 32 kg/ha and 25 and 46 %, respectively. To obtain high and stable yields of spring wheat, maintain potash status and a positive balance of nutrients in leached chernozems as green manure crops, it is advisable to recommend growing pea mixture and phacelia.</p>
Keywords
exchange potassium,
green manure,
pea mixture,
phacelia,
rapeseed,
mustard,
leached Chernozem,
balance,
nitrogen,
phosphorus,
yield,
wheat
About the Author
L. P. Galeeva
Novosibirsk State Agrarian University
Russian Federation
Doctor of Agricultural Sciences, Associate Professor
Russian Federation
Doctor of Agricultural Sciences, Associate Professor
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Review
For citations:
Galeeva L.P. THE DYNAMICS OF THE EXCHANGE OF POTASSIUM AND A BALANCE OF NUTRIENTS IN LEACHED CHERNOZEM UNDER GREEN MANURING. Innovations and Food Safety. 2019;(2):138-144. (In Russ.) https://doi.org/10.31677/2311-0651-2019-24-2-138-144
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