Effect of Biofertilizers on growth and yield attributes of Guava (Psidium guajava L) cv. L-49

Abstract

Research was conducted on 4 years old guava trees var. L-49 during Nov-Dec at College of Horticulture and Forestry, Pasighat, Arunachal Pradesh. The result showed that Plant height (17.90%) and Plant girth (16.66%), Canopy spread (N-S) (21.90%), Canopy spread (E-W) (22.59%) was highest with the application of ½ RDF + Azotobacter 100 g + Azospirillum 100 g + VAM 100 g followed by ¼ RDF + Azotobacter 100 g + Azospirillum 100 g + PSB 100 g + VAM 100 g. Application of ½ RDF + Azotobacter 100 g + Azospirillum 100 g + VAM100 g showed maximum Fruit set (59.43%), Number of fruiting branches (26.40), Number of fruits per branch (8.60), No. of fruits per tree (234.28) and Fruit yield (57.53 kg/ha). Fruit retention (59.76%) was maximum with the application of ¼ RDF+ Azotobacter 100 g + Azospirillum 100 g + PSB 100 g + VAM 100 g.