Effect of foliar spray of nutrients on fruiting and yield attributes of guava (Psidium guajava L.)

Abstract

The present investigation was managed out at the Regional Horticultural Research Station, ASPEE College of Horticulture, Navsari Agricultural University, Navsari, Gujarat during the year 2021-22 on guava cv. VNR Bihi. The completely randomized design (CRD) was used with three repetitions and nine treatments which included a foliar spray of nutrients like 1.0% urea, 1.5% urea, 2.0% urea, 0.4% ZnSO4, 0.6% ZnSO4, 0.8% ZnSO4, 0.5% boron, 1.0% boron and compared with control (water spray). Foliar sprays of nutrients were given in the second fortnight of June and 20 days after first spray. The result revealed that maximum fruit set (74.37%) at marble stage, fruit retention (68.70%) at harvesting stage, number of fruits per tree (52.33), average fruit weight (447.86 g), marketable fruit yield (21.08 kg tree-1 and 35.15 t ha-1), fruit length (9.03 cm), fruit diameter (9.72 cm), fruit volume (472.67 cm3) and the minimum fruit drop (31.30%) were observed in foliar spray of 0.8% ZnSO4 in guava cv. VNR Bihi.