National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
To study the effect of different levels (0, 2, 4 and 6 t ha-1) of wheat and maize crop residues (CR), potassium (K) doses [50, 100, 150% recommended K and 50% RDK+K solubilising bacteria (KSB)] and a combination of CR+K doses on maize and wheat crop yield and KSB population, a field experiment was conducted during 2014-15 and 2015-16, following split plot design. The biological yield and KSB population in soil under both the test crops responded positively to CR and K management practices. Wheat and maize CR retention of 4 t ha-1 recorded significantly higher biological yield of maize and wheat, compared to their un-amended controls (11.88 and 12.04 t ha-1 in maize and 12.09 and 12.77 in wheat during 2014-15 and 2015-16, respectively). The viable population of KSB in inoculated soil under maize increased to 24.1 and 26.3 x104 cfu g-1 soil at 60 days after sowing (DAS) and 25.7, 27.9 x104 cfu g-1 soil in wheat compared to their 30 DAS values of 15.5, 16.3 x 104 cfu g-1 in maize, 15.8, 16.8 x104 cfu g-1 in wheat during test years of 2014-15 and 2015-16. Statistically insignificant difference in yield and KSB population was observed with KSB+ CR at 4 and 6 t ha -1. Application of 50 % RDK+KSB resulted in highest biological yield (13.32, 14.46 t ha-1 in maize and 13.51, 14.34 t ha-1 in wheat). A positive correlation between biological yield of maize and wheat, yield components and KSB population was recorded at harvest stage.
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