International Journal of Agriculture, Environment & Biotechnology
Citation: IJAEB: 7(3): 517-525 September 2014
DOI Number: 10.5958/2230-732X.2014.01356.4
©2014 New Delhi Publishers. All rights reserved
Soil Science
Effect of Fertilizer Levels, FYM and Bioinoculants on
Soil Properties in Inceptisol of Varanasi,
Uttar Pradesh, India
Hanuman Prasad Parewa, 1, 2* Janardan Yadav 2 and Amitava Rakshit 2
1 College of Agriculture, (Agriculture University, Jodhpur) Sumerpur, Pali, Rajasthan, INDIA.
2 Department of Soil Science & Agricultural Chemistry, Institute of Agricultural Sciences, BHU, Varanasi, Uttar Pradesh,
*Corresponding author:
Paper No. 237
Received: August 12, 2014
Accepted: August 25, 2014
Published: September 4, 2014
A field experiment was conducted during Rabi seasons of 2009-10 and 2010-11 at the Agricultural Research Farm, Banaras Hindu University,
Varanasi (U.P.) to study the effect of fertilizer levels, FYM and bioinoculants and their interaction effect on soil properties. The treatments
consisted four levels of recommended dose of fertilizer (0, 50, 75 and 100% NPK), two levels of farmyard manure (0, 10 t ha -1 ) and four
inoculation [no inoculation, PGPR ( Azotobactor chroococum W5 + Azospirillum brasilence Cd + Pseudomonas fluorescens BHU PSB06
+ Bacillus megaterium BHU PSB14), VAM (vesicular arbuscular mycorrhiza) and PGPR+VAM]. The experiment was replicated thrice in
a split plot design. The results revealed that application of different treatments did not affect the pH, EC and bulk density decreased, water
holding capacity, organic carbon and CEC significantly improved after harvest of wheat. The dehydrogenase, phosphatase enzyme activity
and soil microbial biomass carbon (SMBC) and available N, P and K and microbial population of soil after the harvest of wheat were
improved significantly due to the integration of inorganic fertilizers with FYM and bioinoculants. Positive impact of biological and organic
manure application have been recorded with an additional advantage of reduction of chemical fertilizer use.
  • Physical, chemical and microbial properties of soil were improved by combined application of fertilizer levels, FYM and
    bioinoculants over control.
  • Combined application of 75% NPK fertilizer, FYM @ 10 t ha -1 and bioinoculants emerged as an viable alternative for sustainable
    maintenance of soil fertility, plant nutrient and wheat productivity
    Keywords : PGPR, FYM, enzyme activity, SMBC
    The integrated nutrient management advocates balanced
    desired crop productivity. Fertilizers are very important
    and conjoint use of inorganic fertilizer, organic manure,
    sources of plant nutrients for increasing agricultural
    (Rakshit et al., 2008) green manure and biofertilizer in
    production. The inorganic fertilizer could supply only
    order to maintenance or adjustment of soil fertility and
    one, two or three nutrients but integrated use of inorganic
    plant nutrient supply to an optimum level for sustaining
    fertilizers, FYM and bioinoculants would provide N, P,