Effect of chemical fertilizers, bio-fertilizers and organic manure on growth, yield and quality of guava under Prayagraj agro-climatic condition

Abstract

The present experiment was carried out during December 2018 to March 2019 in Central horticulture research farm of Department of Horticulture, SHUATS, Prayagraj. The experiment was conducted in Randomized Block Design with 12 treatment replicated thrice. The treatments were T0 (control), T1 (100% RDF (600:300:300g NPK / Tree), T2 (75% RDF Cow dung slurry (10L/tree)), T3 (50% RDF Azospirillum (100g / tree)), T4 (75% RDF VAM (30g/Tree)), T5 50% RDF Vermicompost (10kg/tree), T6 (75% RDF Cow dung slurry (10Lt./tree)+ Azospirillum (100g / tree)), T7 (50% RDF VAM (30g/Tree) + Azospirillum (100g/Tree)), T8 (75% RDF Cow dung slurry (10Lt./tree)+ VAM (30g/Tree), T9 (50% RDF Cow dung slurry (10Lt./tree) + Vermicompost (10kg/tree)), T10 (75% RDF VAM (30g/Tree) + Vermicompost (10kg/tree)), T11 (Azospirillum (100g/Tree) + (50% RDF VAM (30g/Tree)+ Vermicompost (10kg/tree). From the present investigation it is found that treatment T11 (Azospirillum (100g/Tree) + (50% RDF VAM (30g/Tree) + Vermicompost (10kg/tree) was found superior in terms of Plant height, Crown height, plant girth, no. of flowers, no. of fruit set percentage, no. of fruit, average fruit weight, fruit yield per plant, length of fruit, width of fruit, pulp thickness, T.S.S., Acidity and cost benefit ratio.