WATER REGIME OF HUMID SUBTROPICS OF RUSSIAAND IRRIGATION OF ACTINIDIA DELICIOSA (ACTINIDIA DELICIOSA (A. CHEV.) LIANG. ЕT. FERG.)
- The authors:
- Besedina T. D., Tutberidze T. V., Toria G. B.
- Page numbers:
- 135 - 144
- Actinidia deliciosa, humid subtropics, drip irrigation, water regime, yield.
Length of vegetation of Actinidia deliciosa in growth conditions of humid subtropics of Russia was observed from March to the end of November. Mathematical modeling was established: during the "flowering" phase, its yield is limited by precipitation and humidity; during the period of fruit development, irrigation is necessary, due to the specificity of water regime in the region. In the cold period (November – March), a pouring rains is observed here, in the warm period (April – October), especially in July-September, drought intervals of the summer season occur of different duration from 10 to 40 days, as a result soil moisture deficiency occurs. The study of drip irrigation under different irrigation regimes after reaching pre-threshold before normal humidity (90, 80, 70 %) revealed the greatest efficiency at watering 80 % of normal humidity, which increased yield of Actinidia deliciosa cultivar ‘Hayward’ by 59 %.