Nutrient Concentration of Straw during its Degradation in the Conditions of Forest-Steppe Zone of Trans-Urals

DOI

10.2991/agrosmart-18.2018.2How to use a DOI?

Keywords

straw, mineral fertilizers, plant residues, mineralization, nitrogen concentration, phosphorus and potassium

Abstract

Based on the economic reasons, the agrarians refused to apply organic fertilizers on arable land. Nowadays, to obtain high yields of agricultural crops, agrochemicals have been actively used, which led to organic matter shortage entering the soil. Straw, as a by-product, is usually removed from fields, which aggravates the situation on arable land. Moreover, this leads to deterioration of the humus state and nutrient regime of arable soil. The research objective was as follows: to study the dynamics of nutrient release from the plowed straw. The studies were carried out on the basis of Northern Trans-Ural State Agricultural University, located in the forest-steppe zone of the eastern margin of the Trans-Ural Plateau. The soil is leached chernozem, thin, formed on covering silt. The straw was collected from each area where mineral fertilizers were applied for the planned yield from 3.0 to 6.0 t/ha of grain. The straw was buried at various depths (10, 20, and 30 cm). It was established that immediately after the plowing up of plant residues in the autumn period, the nitrogen leaching was observed from the straw in the areas where fertilizer at various rates were introduced for the planned grain yield. In May, its concentration in the plowed up plant residues reaches 0.56-0.80% by weight. In June, the nitrogen concentration in the straw increases after the microflora growth on the surface of the plant residues. Different levels of mineral nutrition do not affect the release of phosphorus and potassium from the plowed up plant residues. The main amount of phosphorus and potassium from the plowed up straw is released in the period from October to June, reaching 0.11 and 0.10%, respectively.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - Anastasiya Akhtiamova
AU  - Oksana Kulyasova
PY  - 2018/12
DA  - 2018/12
TI  - Nutrient Concentration of Straw during its Degradation in the Conditions of Forest-Steppe Zone of Trans-Urals
BT  - International scientific and practical conference "AgroSMART - Smart solutions for agriculture" (AgroSMART 2018)
PB  - Atlantis Press
SP  - 6
EP  - 10
SN  - 2352-5401
UR  - https://doi.org/10.2991/agrosmart-18.2018.2
DO  - 10.2991/agrosmart-18.2018.2
ID  - Akhtiamova2018/12
ER  -