EFFECT OF DIFFERENT NITROGEN LEVELS ON FORAGE YIELD, QUALITY AND ECONOMICS OF OAT (AVENA SATIVA L.) GENOTYPES
A. S. GODARA, SATPAL*, B. S. DUHAN AND S. K. PAHUJA
Department of Genetics & Plant Breeding
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
*(e-mail : satpal.fpj@gmail.com)
(Received : 24 February 2016; Accepted : 26 March 2016)
SUMMARY
A field experiment was conducted at CCS Haryana Agricultural University, Hisar (Haryana) during winter season (rabi) of 2014-15 to study the response of different nitrogen levels on the yield and quality of oat (Avena sativa L.) genotypes. Twelve oat genotypes viz., RSO 60, RSO 59, SKO 190, UPO 12-1, OS 405, JHO 2012-1, OL 1760, JO 04-14, JHO 2012-2, OL 125, OS 6 and Kent were sown with 40, 80 and 120 kg nitrogen per hectare. Among genotypes, OS 405 produced the maximum plant height, green fodder, dry matter followed by SKO 190. Both these two genotypes of oat remained on a par with each other with respect to green fodder and dry matter production. Genotype SKO 190 produced maximum number of tillers/metre row length which was significantly higher over rest of the genotypes. Kent was found superior in terms of crude protein content (11.36%), while SKO 190 yielded the highest crude protein yield. Growth parameters, green fodder and dry matter were influenced significantly by increasing levels of nitrogen from 40 to 120 kg/ha. Whereas leaf : stem ratio and tillers/metre row length were increased up to 80 kg N/ ha. Crude protein content and its yield revealed increased trend with increasing levels of nitrogen, maximum with 120 kg N/ha. Among genotypes, the maximum gross returns (Rs. 69645/ha), net returns (Rs. 41955/ha) and B : C ratio (1.52) were recorded with OS 405 and among different nitrogen levels, the maximum gross returns (Rs. 69945/ha), net returns (Rs. 41785/ha) and B : C ratio (1.48) were noticed with application of 120 kg N/ha.
Key words:Dry matter, forage yield, nitrogen, oats