Effect of Different Micronutrients on Growth, Yield and Quality of Papaya (Carica papaya L.) cv. Ranchi

The present investigation was carried out to study the effect of different levels of boron (borax at 0.25 and 0.50%), zinc (zinc sulphate 0.25 and 0.50%) and their combinations on growth, yield and quality of papaya cv. Ranchi at the horticulture orchard of Uttar Banga Krishi Viswavidyalaya, Pundibari, Cooch Behar, West Bengal. Among the different levels of above micronutrients, application of borax at 0.50% + ZnSO4 at 0.25% was considered as the best which caused the maximum plant growth (171.62 cm plant height and 39.74 cm girth) and fruit yield (37.20 kg/plant). The maximum values of qualitative parameters in respect of total soluble solids (6.81 degrees Brix), total sugar (6.88%), ascorbic acid (57.11 mg/100 g), beta carotene (3327.14 mu g/100 g), and TSS-acid ratio (58.41) were also obtained with the same combination.