Pre-harvest application of eco-friendly chemicals and fruit bagging to enhance yield and quality of mango cv. Amrapali
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Date
2021-10
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G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
Abstract
The investigation was carried out at Horticultural Research Center, Patharchatta, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Udham Singh Nagar (Uttarakhand), during the year 2020-2021. The experiment was laid out in Randomized Block Design (RBD) with 12 treatments (T1: Nimbecidine @ 0.4%, T2: Kunapajala @ 10%, T3: Starch @ 1%,T4: Starch @ 2%, T5: Mineral oil @ 0.5%, T6: Mineral oil @ 1.0%, T7: Starch @ 1 % + Mineral oil @ 0.5%, T8: Sodium bicarbonate @
1% + mineral oil @ 0.5%, T9: Nutrients mixture (boric acid @ 0.2% + calcium nitrate @ 0.2% + zinc sulphate @ 0.2%), T10: Fruit bagging (ordinary brown paper), T11: Fruit bagging (organic/ UV/ water resistant brown paper), T12: Control) and the treatment were replicated thrice. The results of the study revealed that the treatment T11 (fruit bagging with organic/ UV/ water resistant brown paper bags), was found to be most effective for increasing the yield (14.58 kg plant-1, 19.43tonnes hectare-1), fruit weight (298.23 g), width (7.29 cm), volume (310.17 ml), shelf life (15.05 days), TSS (20.95 ºB), total sugars (16.86%), reducing sugar (5.20%) and total carotenoids (5.86 mg/100g). The higher net return (737027.2 Rs/ha) was also observed with the treatment T11. The higher fruit length (12.39 cm) was observed with the treatment T8. However, it was observed that the treatment T9 have found most effective for increasing the ascorbic acid (42.01mg 100g-1) content in fruit. On the other hand, the disease incidence (anthracnose: 16.67 %, stem end rot: 6.67 %, sooty mold: 1.67%), disease severity (anthracnose: 8.00 %, stem end rot: 0.00 %, sooty mold: 0.00 %) and AUDPC (anthracnose: 18.50, stem end rot: 0.00) were also found minimum at 15 days of shelf life with the treatment T11. Thus it can be concluded that the fruit bagging with organic/ UV/ water resistant brown paper bag is most effective for increasing the yield, shelf life, quality, net return and controlling the sooty mold, anthracnose and stem end rot in late maturing mango cv. Amrapali.