Summary
Defence Institute of Bio-Energy Research, Haldwani has successfully developed a hydroponics system by clubbing the soil less cultivation with rain water harvesting technology. The institute has also developed a suitable nutrient composition suitable for wide range of vegetables. Among the various varieties/hybrids grown in hydroponics, cucumber line PC 4C-8 exhibited the maximum fruit yield (448.3 q/ha). Among the various tomato hybrids, Avinash-2 exhibited highest yield (1052 q/ha) and number of fruits (154 per sq m) whereas TSS, total sugars, crude protein and minerals content were the maximum in tomato hybrid DARL-304. Interestingly, hydroponics system prolonged the harvesting period by 45 days in tomato. Plant population density of 6 plants/m2 was found optimum with the highest fruit y
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