Vol. 7 No. 2
Influence of biofertilizer and inorganic fertilizer in pruned mango orchard cv. Amrapali
Author(s): S. KUNDU, P. DATTA, J. MISHRA, K. RASHMI AND B. GHOSH
Abstract: An experiment was carried out at Horticultural Research Station of Bidhan Chandra Krishi Viswavidyalaya (Agriculture University), West Bengal, India during 2005-07 to find out the effect of biofertilizer and inorganic fertilizer in Amrapali mango trees of 10 years old which were planted in the year 1995 at 5 m × 5 m spacing and subsequently pruned during January, 2004 at 2.5 m height. Three levels of inorganic fertilizers (100% NPK, 75%, NPK and 50% NPK) were applied alone and also in combinations with different biofertilizers (Azotobacter, Azospirillum and VAM). Among sixteen treatments, all the inorganic and biofertilizer combinations exhibited profound effect on growth, yield and fruit quality and leaf mineral composition than inorganic fertilizer alone. However, the efficiency of inorganic fertilizer at three levels was more when supplemented with both Azotobacter and VAM. Higher fruit yield was obtained when the plants were treated with 100%, NPK+Azotobacter+VAM (98.1 kg/plant) or 75% NPK+Azotobacter+VAM (93.5 kg/plant) as compared to much lesser yield (60 Kg/plant) with 100% NPK. It was concluded that the treatments 100% NPK+Azotobacter+VAM and 75% NPK+Azotobacter+VAM were effective and may be adopted to improve the vegetative growth and productivity with quality fruits.
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