Progressive is the principle of nonstop water supply to plants and soil in accordance with their water intake. Drip irrigation and impulse sprinkling correspond to this principle. Drip irrigation provides optimal water and nutrients regimes directly in the root system of plants. However, this irrigation is not effective enough under the conditions of high temperatures (over 25–35 °С) as growth processes are known to slow down and photosynthesis to cease, consequently affecting the yielding capacity. Impulse sprinkling provides optimal moisture level in the given layer, improved micro climate in the plant environment and water regime of plants within the whole vegetation period and is most effective within day time. Through improvement of micro climate and plants water regime within the period of high temperatures and low air humidity under the conditions of South Kazakhstan technology of impulse sprinkling enabled increasing productivity of clonal rootstock mother plantation for 3 years of research on average by 19.4% compared to regular sprinkling. The applied technology provided optimization of layers growth and development conditions upon decrease of the soil layer of mother plantation bushes moistening for derogation of their water regime after hilling the grown root layers.
- impulse sprinkling
- First received 8 December 2015.
- Accepted in revised form 2 March 2016.
- © IWA Publishing 2016