Effect of foliar application of nano urea on growth and yield of custard apple (Annona squamosa L.) CV. GJCA-1

Abstract

A field experiment was conducted to study the effect of foliar application of nano urea on growth and yield of custard apple (Annona squamosa L.) cv. GJCA-1 during the year 2023-2024 at Madhadibaug, Fruit Research Station, Department of Fruit Science, College of Horticulture, Junagadh Agricultural University, Junagadh. The experiment that uses a randomized block design (RBD) with eleven treatments and three replications. The results revealed that the variation due to different treatments of nano urea was found significant and highest incremental tree height (87.00 cm), incremental tree canopy spread N-S (90.83 cm) and incremental tree canopy spread E-W (88.50 cm), chlorophyll content index (50.03 CCI) and leaf area (90.20 cm2) was found in treatment 100% RDN + 0.5% Nano urea (T5). While, maximum number of fruits per tree (86.93), fruit yield per tree (15.27 kg), fruit yield per hectare (4.23 tonnes) was noted in 100% RDN + 0.4% Nano urea (T4). Therefore, concluded that using nano urea enhances the growth and yield of custard apple.