Abstract
Abstract Intensive agriculture involving high crop intensity, unavailability of organics, and higher use of straight fertilizers causes imbalanced use and deficiencies of several other macro and micronutrients. Nutrients supply through the integration of microbial consortium containing Gluconacetobater diazotrophicus, Trichoderma harzianum, and Pseudomonas fluorescens can reduce the requirements on the one hand and can also increase the response of chemical fertilizers. Thus we had planned the present experiment with the objectives (i) to determine the effect of integrated application of microbial consortium (MC) and NPK fertilizer on soil quality parameters and crop growth and yield attributes and (ii) to assess the effect of integration on agronomic efficiency of N, P and K and find out the possibilities for reduction in applied doses of NPK, if any. Five treatments viz., T 1 ; N 0 P 0 K 0 ; T 2 : N 75 P 13 K 25 ; T 3 : N 150 P 26 K 50 ; T 4 : N 75 P 13 K 25 + microbial consortium and T 5 : N 150 P 26 K 50 + microbial consortium containing new strains of Trichoderma harzianum , Gluconcetobacter diazotrophicus , and Pseudomonas fluorescens (CFU 10 9–10 per ml liquid culture) were evaluated under four replications in a randomized block design (RBD). Experimental results indicated that integrating microbial consortium and NPK fertilizers' application proved effective in improving soil organic carbon, soil microbial population, microbial biomass carbon, microbial biomass nitrogen, and soil respiration. Integrated use of microbial consortium with NPK also improved the cation exchange capacity of soil and roots. However, the growth and yield attributes, nutrients uptake, sugarcane, and sugar yields also revealed a positive effect of microbial consortium's integrated application with NPK. The integration of MC and NPK also improved the agronomic efficiency of applied nutrients (NPK). Reduction of 50% NPK with these microbial consortia ( Trichoderma harzianum , Gluconcetobacter diazotrophicus , and Pseudomonas fluorescens ) was found better than the application of full NPK through chemical fertilizers. Thus application of N 150 P 26 K 50 with microbial consortium can sustain soil fertility besides improving sugarcane and sugar yields in subtropical Indian conditions.
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Claims 6
Claim · model-written summary
Integrated consortium and NPK improved soil organic carbon, microbial population, biomass carbon and nitrogen, and respiration.
- Taxon
- sugarcanet0
- Treatment
- microbial consortium and NPK fertilizerse0
- Outcome
- soil organic carbon, soil microbial population, microbial biomass carbone0
- Direction
- improvinge0
Not reportedComparator
Verbatim
e0“integrating microbial consortium and NPK fertilizers' application proved effective in improving soil organic carbon, soil microbial population, microbial biomass carbon, microbial biomass nitrogen, and soil respiration.”
t0“sugarcane”
Claim · model-written summary
Integrated consortium and NPK improved cation exchange capacity of soil and roots.
- Taxon
- sugarcanet0
- Treatment
- microbial consortium with NPKe0
- Outcome
- cation exchange capacity of soil and rootse0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“Integrated use of microbial consortium with NPK also improved the cation exchange capacity of soil and roots.”
t0“sugarcane”
Claim · model-written summary
Integrated consortium and NPK positively affected growth, yield, nutrient uptake, and sugar yield.
- Taxon
- sugarcanee0
- Treatment
- microbial consortium's integrated application with NPKe0
- Outcome
- growth and yield attributese0
- Direction
- positivee0
Not reportedComparator
Verbatim
e0“the growth and yield attributes, nutrients uptake, sugarcane, and sugar yields also revealed a positive effect of microbial consortium's integrated application with NPK.”
Claim · model-written summary
Integration improved agronomic efficiency of applied nutrients.
- Taxon
- sugarcanet0
- Treatment
- integration of MC and NPKe0
- Outcome
- agronomic efficiency of applied nutrients (NPK)e0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“The integration of MC and NPK also improved the agronomic efficiency of applied nutrients (NPK).”
t0“sugarcane”
Claim · model-written summary
Half-rate NPK with microbial consortia performed better than full chemical NPK.
Verbatim
e0“Reduction of 50% NPK with these microbial consortia ( Trichoderma harzianum , Gluconcetobacter diazotrophicus , and Pseudomonas fluorescens ) was found better than the application of full NPK through chemical fertilizers.”
t0“sugarcane”
Claim · model-written summary
The authors conclude N 150 P 26 K 50 with consortium can sustain fertility and improve sugarcane and sugar yields in subtropical India.
Verbatim
e0“Thus application of N 150 P 26 K 50 with microbial consortium can sustain soil fertility besides improving sugarcane and sugar yields in subtropical Indian conditions.”
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