Effect of zinc and boron on growth, yield and quality of onion (Allium cepa L.) cv. Agrifound dark red

Studies on effect of zinc and boron on growth, yield and quality of onion (Allium cepa L.) cv. Agrifound dark red was carried out with nine treatment (zinc viz., 0, 25 and 50 kg ha⁻¹ and boron viz., 0, 2.5 and 5 kg ha⁻¹) combinations. Results were significant in most of the parameters of onion. The highest plant height (57.47 cm), number of leaves (12.37), neck thickness (1.68 cm), bulb diameter (6.83 cm), bulb weight (110.80 g), yield plot⁻¹ (5.73 kg), yield hectare⁻¹ (254.81 q), dry weight of bulb (14.30 g), t. S.S (13.98%), Zn content in leaves (41.27 ppm) and bulbs (55.33 ppm), B content in leaves (13.87 ppm) and bulbs (14.43 ppm), N (1.49%), P (0.58%) and K (1.77%) content in leaves and N (1.60%), P (0.47%) and K (1.85%) content in bulbs were maximum in treatment combination of Zn 25 kg + B 5 kg ha⁻¹, while treatment combination of Zn 50 kg + B 5 kg ha⁻¹ showed maximum sulphur content in leaves (2196.7 ppm) and bulbs (2344 ppm). results indicated soil application of Zn 25 kg + B 5 kg ha⁻¹ significantly improved in leaves and bulb compared to other treatment combinations and control.