Response of Onion (Allium cepa L.) Varieties to Farm Yard Manure in Arid Region of Western Rajasthan

An experiment was conducted on response of Onion (Allium cepa L.) varieties to Farm Yard Manure in Arid Region of Western Rajasthan in Horticulture Farm at Swami Keshwanand Rajasthan Agricultural University, Bikaner, during Rabi season 2009–2010. The experiment comprising four varieties of onion viz., PDR, RO – 59, RO – 252 and RO – 282 and different levels of FYM viz., 0, 20, 40 and 60 t ha⁻¹. The total treatment combinations were 16 with three replications. The plant height, number of leaves per plant, fresh and dry weight of leaves, fresh weight of bulb, diameter of bulb, volume of bulb and bulb yield were maximum under the variety RO – 252. Number of leaves per plant, plant height, fresh weight of bulb, diameter of bulb, volume of bulb, bulb yield, TSS and pungency were found maximum with the application of FYM @ 40 t ha⁻¹ however, plant height was recorded to be maximum with the application of 60 t FYM ha⁻¹.