Effect of method and interval of irrigation on plant growth, yield and quality of grape cv. Pusa Navrang

Abstract

An investigation was carried out at the Malancha Farm under Srinekatan, Shantinekatan Development Authority, Government of West Bengal, Bolepur, Birbhum, West Bengal on 4-year-old vines of Pusa Navrang planted at 2 m × 3 m on Y-trellis to know the effects of method and interval of irrigation on growth dynamics, yield and fruit quality. There were 6-irrigation treatments, viz., basin irrigation @ 16 t/vine daily, 1-day interval, 2-day interval; drip irrigation @ 16 l/vine daily, 1-day interval and 2-day interval. Drip irrigation at one day interval resulted in highest yield increment (33.3%) with higher bunch and berry weight and better fruit quality. Regarding irrigation strategy, vines should be irrigated daily after pruning to 2-leaf stage, 1-day interval from flowering to near fruit maturity and 2-day interval during fruit maturity for better growth dynamics, fruit yield and fruit quality.