STUDIES ON INTEGRATED NUTRIENT MANAGEMENT IN GUAVA (PSIDIUM GUAJAVA L.) CULTIVAR SARDAR
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Date
2008
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present studies were conducted in the research orchard of Division of Fruit Science, Faculty of Agriculture, SKUAST-J, Udheywalla during 2006-07 & 2007-08 to study the effect of organics and inorganics augmented with Azotobacter and Azospirillium on yield, quality and nutrient status of guava cv. Sardar. Integrated use of 25 per cent nitrogen through FYM and 75 per cent nitrogen through urea augmented with Azotobacter significantly improved the yield of guava which recorded maximum fruit size (8.39 x 7.94cm), fruit weight (244.24 g), and highest yield of (41.14 kg per plant) as
compared to other treatments, which was at par with the trees receiving cent per cent nitrogen through urea augmented with Azotobacter. The total soluble solids (12.95 °Brix), total sugars (8.61 per cent), and pectin content (0.71 per cent) improved significantly in fruits receiving 50 per cent nitrogen through FYM and 50 per cent nitrogen through urea augmented with Azotobacter, as well as with 25 per cent nitrogen through FYM and 75 per cent nitrogen through urea augmented with Azotobacter, whereas the ascorbic acid content was found maximum (212.34 mg per 100g of pulp) with cent percent nitrogen through application of FYM augmented with Azotobacter and in the trees receiving 75 per cent nitrogen through FYM and 25 per cent through urea augmented with Azotobacter. Integration of 50 per cent nitrogen through poultry manure and 50 per cent of nitrogen through urea augmented with Azotobacter resulted in maximum fruit size (8.47 x 8.02cm), weight (248.80 g), and highest yield (41.69 kg per plant) as compared to other treatments, however trees receiving 25 per cent of nitrogen through poultry manure and 75 per cent nitrogen through urea augmented with Azotobacter was equally effective. The total soluble solids (13.01 °Brix), total sugars (8.68 per cent), pectin content (0.74 per cent) was found maximum in trees receiving 75 per cent nitrogen through poultry manure and 25 per cent nitrogen through urea augmented with Azotobacter, and trees receiving 50 per cent nitrogen through poultry manure and 50 per cent nitrogen through urea augmented with Azotobacter, whereas the ascorbic acid content was found maximum (215.35 mg per 100g of pulp) with cent per cent nitrogen through poultry manure augmented with Azotobacter and also in trees treated with 75 per cent nitrogen through poultry manure and 25 per cent nitrogen through urea augmented with Azotobacter.
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No. of references 240