Effect Of Bio-Fertilizer In Conjunction With Agro-Chemicals On Yield Of Indian Mustard Under Nutrients Stress Condition

The present study was under taken during 2004-05 and 2005-06 at Regional Research Station, Mainpuri. The experimental soil was sandy loam, having pH 8.5, organic carbon 0.45%, total nitrogen 0.04%, available phosphorus 10 kg/ha and available potassium 278 kg/ha, therefore, poor fertility level indicated nutrients stress condition. The main objective was to enhanced the productivity of Indian mustard with suitable doses of chemical fertilizer in the combination of bacterial fertilizer. Four levels of Bacillus circulans culture (bacterial fertilizer) i.e. 0, 10, 15 and 20 kg/ha in combination of 50% RDF and 100% RDF were tested. Variety Urvashi was planted in the first fortnight of October and harvested in second fortnight of February after 130 days of seeding during both experimental years. Application of Bacillus circulans culture @ 15 kg/ha or 1.50 lakh caror bacteria of Bacillus circulans/ha with 100% RDF/ha registered significantly higher seed yield of Indian mustard by 20.97 q/ha over 100% RDF + 0 kg Bacillus circulans culture/control (18.99 q/ha). Thus application of bacterial fertilizer @ 15 kg/ha increased the seed yield by 10.45% over non use of bacterial fertilizer. Application of Bacillus circulans culture beyond 15 kg/ha confined the seed yield of Indian mustard. Application of 50% RDF reduced the seed yield of Indian mustard at each level of Bacillus circulans culture in comparison to 100% RDF + Bacillus circulans culture doses. The growth and yield contributing parameters were concordance to the seed yield of Indian mustard.