Impact of Resource Conserving Technologies (RCT) on soil physical properties and rapeseed (Brassica napus L.) yield in irrigated agriculture areas of the South-Eastern Kazakhstan

Year 2019, Volume: 8 Issue: 1, 83 - 93, 01.01.2019

Naziya Suleimenova Baglan Makhamedova Gulnar Orynbasarova Dastan Kalykov Zhainagul Yertayeva

https://doi.org/10.18393/ejss.510686

Cited By: 5

Abstract

The
aim of this resarch was to determine the effects of Resource Conserving Technologies (RCT) system and Conventional Tillage
(CT) on soil physical properties and Rapeseed (Brassica
napus L.) yield in irrigated agriculture areas of the South-Eastern Kazakhstan. The experimental
study was conducted according to a radomized block design with three
replications between 2015 and 2018. The CT system had maximum anthropogenic
effect and caused loosening of arable soil layer, had the lowest bulk density
values (1.19 -1.21 g/cm³).
The CT had a bulk density ranged between 1.13 and 1.30 g/cm³. With a
RCT tillage, the bulk density during the growing season of rape was located in
optimal density zone between 1.20 and 1.22 g/cm³. The
RCT of rapeseed provided the greatest efficiency, where the yield of rapeseed
increased by 13.3% and 22.0%. It has been revealed that with RCT of rapeseed
cultivation, minimum technology (Mini-till) ensures sustainability of soil
environment and its ecological condition, improves structure and raises water
resistance of agroecosystem’s soil aggregate. In turn the structure of soil’s
arable layer stabilizes with optimal soil density, which contributes to normal
growth and development of rapeseed.  It
is proved that minimal technology of tillage is the leading agricultural
practice ensuring preservation and improvement of qualitative and quantitative
indicators of soil resource and productivity of oilseed rape.

Keywords

Conservation tillage, agrophysical factors, fertility, yield

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