SHIVANGI KAITH*, NAVEEN KUMAR AND SUPRIYA
Department of Agronomy, College of Agriculture
CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176062 (H.P.), India
ICAR- National Dairy Research Institute, Karnal-132 001 (Haryana), India
*(e-mail: shivkaith30@gmail.com)
(Received: 15 September 2024; Accepted: 28 September, 2024)
SUMMARY
A field experiment was conducted during rabi 2022-23 at Fodder Research Farm, CSK HPKV, Palampur (H.P.) to evaluate the performance of nano urea in oat (Avena sativa L.) under field conditions and examine how well it can be combined with other N source. Eleven treatments comprised of combinations of three levels of nitrogen (100, 75 and 50 per cent recommended dose of nitrogen), three doses of nano urea (2, 4 and 6ml/l of water) along with the recommended dose of nitrogen (RDN) 100 kg/ha, RDN + water spray at the time of nano urea spray and control (No N) were evaluated in the randomized block design with three replications in soils having acidic soil pH, low in available nitrogen and medium in available phosphorus and potassium. Application of 75 per cent recommended nitrogen + nano urea @ 6 ml/l of water resulted in significantly taller plant heights. The number of shoots was significantly increased through a conventional source as well as nano urea spray, where higher shoot numbers were recorded with the RDN; 100kg/ha which was remained at par with RDN + water spray and 75 per cent recommended nitrogen + nano urea @ 6 ml/l of water. Significantly, higher green (171.04 q/ ha) and dry fodder (62.34 q/ha) yield, and monetary returns viz., gross return (88089 Rs./ha), net return (51487 Rs./ha) and benefit-to-cost (1.41) ratio were recorded with the application of a recommended dose of nitrogen 100kg/ha. The results established that the use of nano urea in combination with conventional urea can improve the growth contributing characters to some extent whereas it could not establish the superiority of getting higher yields and profitability in fodder oat.
Key words: Conventional urea, nano urea, fodder oats, net return and yield