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The Central Scientific Agricultural Library of the Russian Academy of Agricultural Sciences is a Bibliographic Center for Agricultural Science and Industry in Russia

Journal Article

Journal article

Dynamics of plant residues depending on technology of crops cultivation on ordinary chernozem  [2018]

Perederieva, V.M.; Vlasova, O.I.; Dorozhko, G.R.; Petrova, L.N.; et al.

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The research was carried out in 2016-2016 in the Stavropol krai in the unstable precipitation zone. The influence of traditional crop cultivation method and direct seeding without tillage on the quantity of plant residues, changes during vegetation and distribution in the 0-30 cm layer are shown. These indices were compared in crop production conditions. It is established that before direct seeding upper soil layer contains, depending on the crop, from 59.6 to 71.8% of root and stubble residues. The cultivation of winter wheat after winter rape promotes a more intensive loss of plant residues in the upper (0-10 cm) soil layer during the vegetative period. To the stage of full ripeness, their share is about 22.0%. In the cultivation of winter rapeseed and maize for grain after cereal crops, 34.2 and 34.1% of plant residues respectively remain in the upper soil layer. Traditional cultivation technology leads to more active decomposition of plant residues. In the upper 0-10 cm layer of soil from sowing to full ripeness of maize cultivated according to traditional technology plant residue content decreases by 90.9%, and in direct seeding - by 66.0%. In the subsoil layer of the soil, 20-30 cm, is preserved up to 42.3% of plant residues, and in direct sowing up to 72.2% of the initial amount. The traditional crop cultivation and use of practices recommended for the soil and climatic zone promotes the plant residue mineralization and the enrichment of the soil la
yer of 0-30 cm with plant nutrition elements. Direct seeding hamper the decomposition of organic matter and create mulching layer on the soil top.

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Agrochem Herald

ISSN : 0235-2516