Techno-economic feasibility of microirrigation in pineapple under the Gangetic alluvial plain of West Bengal

Cost Benefit Analysis of Drip Fertigation and Flower Induction in Pineapple (Ananas comosus L. Merr.) Variety ‘Giant Kew’ in Goa, India

“…Among all the treatments, the highest benefit cost ratio was recorded in F3T1 (3.34) followed by F2T1 (3.32). Patra et al, 2015 had reported BC ratio of 3.15-3.32 in drip irrigated pineapple cv. 'Kew' in gangetic plains of India.…”

“…According to Carr, (2012), drip irrigation, micro-jets or over head sprinklers can be used in pineapple production when the water supply is restricted and the cost of labour is high.The drip irrigation depths that provided the maximum N, P, K and Ca accumulation in 'Perola' pineapple were 53.6, 61.6, 54.5 and 60.2% of ECA( Class A pan evaporation) respectively (Amaral et al, 2014). According to Patra et al (2015), in pineapple, drip irrigation was superior to micro sprinklers and sub-surface irrigation under gangetic alluvial plains of West Bengal. According to them, individual fruit weight without crown varied from 1.4 to 1.6 kg regardless of irrigation levels under drip system; and irrigation at 0.6 E0 recorded the higher yield (56.86 t/ ha), maximum water use efficiency (59.6-70.2 kg/ ha/ mm), water saving and benefit-cost ratio (3.15-3.32) with an average increase of 8.6, 10.9 and 15.4% in yield in drip irrigation scheduled at 0.6, 0.8 and 1.0 of E0, respectively.…”

Estimation of Crop Water Requirement of Pineapple (Ananas comosus (L.) Merr.) for Drip Fertigation

“…The maximum yield of 96.80 t ha -1 was recorded under drip fertigated plants, followed by drip irrigated (90.96 t ha -1 ) and surface washed (76.45 t ha -1 ) plants (Table 2). According to Patra et al (2015), drip irrigation was superior to micro-sprinklers and sub-surface irrigation in a pineapple under Gangetic alluvial plains of West Bengal. Fontes et al (2000) also reported that, the application of N, P and K through drip fertigation might have increased the yield by maximizing the mobility of nutrients around the root zone.…”