Growth, Yield, Quality and Irrigation Water Use Efficiency of Banana under Drip Irrigation and Fertigation in the Gangetic Plain of West Bengal
A field experiment was carried out during 2008-2010 inthe Gangetic plain of West Bengal, India to study the effect of drip irrigation and fertigation on growth, yield, nutrient uptake, fruit quality and irrigation water use efficiency of banana. The treatments consisted of three levels of drip irrigation (50, 60 and 70% of cumulative pan evaporation) and three levels of drip fertigation (50, 60 and 80% of recommended NPK fertilizers) including surface irrigation and conventional soil fertilization was laid out in an augmented factorial complete block design. The results showed that improvedgrowth, yield, leaf nutrient uptake, fruit quality and irrigation water use efficiency were obtained under drip irrigation compared to surface irrigation. The increasing levels of drip fertigation consistently and significantly increased all these characteristics. However, drip irrigation at 60% CPE with fertigation at 80% RDFproduced maximum growth, yield and fruit quality attributes and higher irrigation water use efficiency, besides water saving of 41.7% for plant and 40.4% for ratoon crop of banana over the surface irrigation and soil fertilization.