Journal of Horticultural Sciences

S. N. Ghosh ¹, B. Bera ², S. Roy ², A. Kundu ²

Affiliations
1 Department of Fruits and Orchard Management, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741252, IN
2 MPS Farm, Dahijuri, Paschim Midnapore, West Bengal, IN

Abstract

An investigation was carried out during 2006-07 and 2007-08 to harness beneficial effects of plant growth regulators on yield and fruit quality in pomegranate cv. Ruby. Seven treatments with three growth regulators, viz., NAA at 25, 50 ppm; GA₃ at 10, 20 ppm; 2,4-D at 5, 10 ppm and control (water spray) were sprayed three times starting at 50% flowering stage and, subsequently, at 21 days' interval. Results revealed that application of NAA at 25 ppm gave significantly high fruit set (44.3%) and fruit retention (44.1%) which resulted in highest fruit yield of 7.8 kg/plant at the age of 7 years, as against 1.7 kg in the control. Fruit weight and quality improved significantly due to growth regulator sprays.

Keywords

Pomegranate, Growth Regulators, Yield, Fruit Quality.

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S. N. Ghosh ¹, B. Bera ², S. Roy ², A. Kundu ², S. K. Dutta Roy ³

Affiliations
1 Department of Fruits and Orchard Management, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur – 741252, IN
2 MPS Farm, Dahijuri, Jhargram, Paschim Midnapore, IN
3 Department of Fruits and Orchard Management, Bidhan Chandra Krishi Viswavidyalaya, Mohanpur-741252, IN

Abstract

To check pre-mature fruit drop in aonla cv. NA-10, an investigation was undertaken during 2007 and 2008 in a Seven year old private orchard at Jhargram, Paschim Midnapore, West Bengal, where the soil is red laterite and pH ranges between 4.5 and 5.5. Treatments included foliar spray of urea (0.2%) + DAP (0.2%), ZnSO₄ (0.5%), Borax (0.4%), NAA (10 and 20 ppm), Vermiwash (3 ml/l), Humaur (2 ml/l) and water spray (control). Results of two years of investigation revealed that spray of NAA at 10 ppm was the best to increase fruit retention, followed by NAA 20 ppm, Vermiwash and Borax, which consequently resulted in the highest fruit yield of 54.9, 52.0, 46.8 and 36.2 kg/plant, respectively, against 13.8 kg in the control. Fruit weight was maximum with 0.5% ZnSO₄ spray, followed by NAA 10 ppm. Fruit quality with regard to TSS, total sugar and ascorbic acid content was better in all the treated fruits compared to control.

Keywords

Aonla, Fruit Quality, Laterite Soil, Growth Regulators, Nutrients, Yield.

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