Author(s): K. K. MANDAL, A. RAJAK, S. DEBNATH AND M. A. HASAN

Abstract: An experiment was carried out at the Regional Research Sub-Station Sekhampur of Bidhan Chandra Krishi Viswavidyalaya, West Bengal, India for two consecutive years during 2008-09 to 2009-10 on to study the effect of integrated nutrient management on growth and yield of aonla cv. NA-7. Observations on plant morphological characters and yield attributes were recorded at maturity of 3 years old aonla trees. The highest plant height (323.00 cm) was recorded in trees supplied with 100:25:150 g NPK+10 kg FYM+50 g PSB plant-1. The highest number of branches was noted in 100:25:150 G NPK+10KG FYM+50G PSB plant-1 treatment (15.30) and the lowest number of branches could be noted against the 100:50:150 g NPK plant-1 treatment (9.53) consisting of exclusive application of inorganic fertilizers. The highest number of fruits was observed in 100:25:150 g NPK+5 kg vermicompost+50 g PSB plant-1 (73.17) which was closely followed by 100:25:150 g NPK+10 kg FYM+50 g PSB plant-1treatment (72.73). The highest yield was recorded in 100:25:150 G NPK+10KG FYM+50G PSB plant-1 (1781.43 g plant-1) whereas lowest fruit yield was recorded in 100:50:150 g NPK plant-1 (831.96 g/plant). In general, the treatment comprising of integration of inorganics, organics and bio-fertilizers produced 50.92% more yield than the application of inorganic fertilizers only (100:50:150 g NPK plant-1 treatment). It appears from the investigation that application of (100:25:150 g NPK plant-1+10 kg FYM+50 g PSB plant-1 and 100:25:150 g NPK+10 kg FYM+50 g PSB plant-1) treatments are beneficial for increasing vegetative growth as well as improving yield and yield attributing characters of aonla cv. NA-7 under red and lateritic region of West Bengal.

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