Accumulation of soil moisture in winter wheat cultivation on slopes of ordinary chernozems of the Rostov oblast

Abstract

The article discusses the effect of different predecessors and methods of basic treatment of soil on the magnitude and nature of the formation of soil moisture reserves in the cultivation of winter wheat on the slopes of ordinary chernozems in the Rostov oblast. Winter wheat in the experiment was cultivated after a steam clean, after winter wheat, after peas, and after corn silage. The study was conducted in four variants of primary tillage in the following crop rotations: chisel, combo, surface, and moldboard tillage. It is established that, in general, over the growing period of winter wheat, 3 of 4 years have a shortage of water supply, especially in the period from the resumption of the spring growing season to complete full ripeness. Analysis of the autumn watersupplies by variants of the main processing of the soil indicates the advantage of the chisel treatment, confirmed statistically by two predecessors—a clean pair and corn silage. The studies for the years 2011–2014 showed the close relationship of the absorption coefficient of precipitation from the reserves of productive moisture in autumn (R 2 = 0.94). It is revealed that the assimilation of precipitation of the cold period largely depends on soil fertility due to different stocks of productive moisture in autumn. The close relationship of grain yield with the value primary of moisture reserves in the autumn sowing of winter wheat in the soil layer of 0–150 cm is shown.

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Correspondence to I. N. Ilinskaya.

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Original Russian Text © I.N. Ilinskaya, 2017, published in Rossiiskaya Sel’skokhozyaistvennaya Nauka, 2017, No. 2, pp. 34–38.

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Ilinskaya, I.N. Accumulation of soil moisture in winter wheat cultivation on slopes of ordinary chernozems of the Rostov oblast. Russ. Agricult. Sci. 43, 244–248 (2017). https://doi.org/10.3103/S1068367417030089

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Keywords

  • winter wheat
  • ordinary chernozem
  • erosion—a dangerous slope
  • moisture availability
  • predecessor
  • basic soil cultivation methods