Vol. 11, Issue 11 (2022)

Author(s):
Raveender Kumar, D Ram, Awadhesh Kumar, Rajeev Kumar, Pragya Ojha and Viseshwar Dayal

Abstract:
The present experiment was carried out to effect of micro nutrients and plant growth regulator on fruit setting of Psidium guajava L. cv. Lucknow-49. Number of flowers per shoot, fruit set, fruit retention percentage were influenced significantly with different micro nutrients and plant growth regulator as compared to control. The maximum fruit set (66.33 per cent) was noted with foliar spray of 0.5 per cent ZnSO4 + 0.4 per cent borax + 50ppm GA₃ (T₇) followed by (63.18 per cent) fruit set with foliar spray of 0.4 per cent borax + 50ppm GA3 (T₅). Maximum fruits retention (61.58 per cent) was noted with foliar application of 0.5 per cent ZnSO4 + 0.4 per cent borax + 50ppm GA3 (T7) followed by (55.30 per cent) fruits retention with foliar spray of treatment (T₅) 0.4 per cent borax + 50ppm GA3 respectively. The maximum average fruit weight (106.35 gm) fruit length (6.93cm) and fruit width (6.28cm) were obtained with the foliar spray of 0.5 per cent ZnSO4 +0.4 per cent borax + 50 ppm GA3 (T₇) and minimum recorded under control (T₀).