Selected Article


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


Theaim of this resarch was to determine the effects of Resource Conserving Technologies (RCT) system and Conventional Tillage(CT) on soil physical properties and Rapeseed (Brassicanapus L.) yield in irrigated agriculture areas of the South-Eastern Kazakhstan. The experimentalstudy was conducted according to a radomized block design with threereplications between 2015 and 2018. The CT system had maximum anthropogeniceffect and caused loosening of arable soil layer, had the lowest bulk densityvalues (1.19 -1.21 g/cm3).The CT had a bulk density ranged between 1.13 and 1.30 g/cm3. With aRCT tillage, the bulk density during the growing season of rape was located inoptimal density zone between 1.20 and 1.22 g/cm3. TheRCT of rapeseed provided the greatest efficiency, where the yield of rapeseedincreased by 13.3% and 22.0%. It has been revealed that with RCT of rapeseedcultivation, minimum technology (Mini-till) ensures sustainability of soilenvironment and its ecological condition, improves structure and raises waterresistance of agroecosystem’s soil aggregate. In turn the structure of soil’sarable layer stabilizes with optimal soil density, which contributes to normalgrowth and development of rapeseed. Itis proved that minimal technology of tillage is the leading agriculturalpractice ensuring preservation and improvement of qualitative and quantitativeindicators of soil resource and productivity of oilseed rape.