Impact of Integrated Nutrient Management On the Agronomic Performance and Yield of Guava Cv. Hisar Safeda
摘要
Excessive dependence on chemical fertilizers in perennial fruit crops often results in declining soil fertility and reduced microbial activity, highlighting the need for sustainable nutrient management strategies. The present study evaluated the impact of integrated nutrient management (INM) on yield attributes, economic returns, and soil nutrient status in guava. The experiment was conducted in a randomized block design with eight treatment combinations and three replications. Treatment means were compared using Duncan’s Multiple Range Test at P < 0.05. Treatments comprised different levels of recommended dose of fertilizers (RDF; 50%, 75%, and 100%) integrated with vermicompost (10 kg tree⁻1) and biofertilizers (Azospirillum and phosphate-solubilizing bacteria at 75 g tree⁻1 each). Among the treatments, 75% RDF combined with vermicompost and biofertilizers recorded the highest number of fruits per plant (199), fruit yield (42.11 kg tree⁻1), and average fruit weight (211.12 g), which was statistically at par with 50% RDF integrated with the same organic and biological inputs. The control (100% RDF alone) exhibited significantly lower yield and fruit weight. Notably, the integration of 50% RDF with vermicompost and biofertilizers resulted in superior economic returns and improved soil nutrient status compared with other treatments. The results demonstrate that partial substitution (50–75%) of inorganic fertilizers with organic and biofertilizer inputs enhances productivity, profitability, and soil fertility in guava.