Effect of integrated nutrient management on growth, yield and quality of guava (Psidium Guajava L.) cv. Allahabad safeda under high density planting

The present investigation entitled, "Effect of integrated nutrient managemnt on growth and yield of guava (Psidium guajava L.) cv. Allahabad Safeda under high density planting" was conducted at Department of Horticulture, Allahabad School of Agriculture, Sam Higginbottom University of Agriculture, Technology and Sciences, Allahabad during 2016–17 and 2017–18. The experiment laid outin Randomized Block Design (RBD) with three replications. The experiment consisted of ten treatmentsviz. (T₀) 100% RDF (NPK-180, 90, 90g), (T₁) 75% RDF+2.5 kg Vermicompost, (T₂) 50% RDF+2.5 kg. Vermicompost, (T₃) 75% RDF+10 kg FYM, (T₄) 50% RDF+10 kg FYM, (T₅) T₃ + Micronutrients (Zn+B+Mn (0.5, 0.2, 0.1%), (T₆) T₄ + Micronutrients (Zn+B+Mn (0.5, 0.2, 0.1%), (T₇) 50% RDF+10 kg FYM+Azotobactor, (T₈) 50% RDF+10 kg FYM+ Azotobactor+ PSB (100g/P), (T₉) 50% RDF+10 kg FYM+ VAM, (T₁₀) 50% RDF+10 kg FYM+ Azotobactor+ VAM. The results revealed that the application of 75%RDF+10 kg FYM + Micronutrients (Zn+B+Mn (0.5, 0.2, 0.1%), (T₅) significantly influence the growth andyield of guava. Maximum plant height (256.80 cm), more number of branch (20.56), maximum number ofleaves (150.16), maximum plant girth (2.58), higher number of flowers (79.33), more number of fruits(38.23), fruit diameter (6.51 cm), fruit length (6.05 cm) at harvest, fruit volume (121.75 ml), average fruitweight (152.84 g) and number of fruits per plant (5829.59 g) were obtained with treatment T₅. The combined application of 75% recommended dose of NPK with FYM (10 kg) and micronutrient gavesignificantly higher fruit yield per hectare (99.56q/ha).