EFFECT OF NITROGEN LEVELS, ORGANIC MANURES AND AZOTOBACTER INOCULATION ON YIELD AND ECONOMICS OF MULTI-CUT OATS
UMA DEVI, K.P. SINGH, SURESH KUMARAND MEENA SEWHAG
Department of Agronomy
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
(Received: 01 June 2014; Accepted: 20 June 2014)
A field experiment was conducted at Research farm, CCS HAU, Hisar, laid out in split-plot design with treatments comprising of four nitrogen (0, 40, 80 and 120 kg N/ha) and two bio-fertilizer (no inoculation and inoculation with Azotobacter chrococcum) levels in main plots and five levels of organic manures (control, FYM @ 5 t/ha, FYM @ 10 t/ha, vermicompost @ 5 t/ha and vermicompost @ 10 t/ha) in sub-plots, replicated thrice. Application of nitrogen levels significantly improved green fodder yields at fodder harvest (75 DAS), yield attributes, grain and straw yields and net returns up to 80 kg N/ha. Inoculation of oats seed with Azotobacter improved significantly the green fodder yield, yield attributes, grain and straw yields and economic returns of oats during both the years. Among five levels of organic manures, application of vermicompost @ 10 t/ha resulted in maximum green fodder yield, yield attributes, grain and straw yields and economic return which were statistically at par recorded in FYM @ 10 t/ha. Azotobacter inoculation had pronounced effect under no nitrogen or at lower levels of nitrogen than higher levels of nitrogen during both the years of experimentation.
Key words: Oats, Nitrogen, Azotobacter, oraganic manures, fodder yield, grain yield, economics