Soil biological properties as affected by the conjunction of chemical fertilizers, bacterial consortia and bio-enhancers in foxtail millet cultivation

During Kharif 2019, a field experiment was conducted with eight treatments replicated three times in Randomized Block Design at College farm, PJTSAU, Rajendranagar, Hyderabad. The aim of the study is to investigate the combined effect of chemical fertilizers and bio-agents (bacterial consortia and bio-enhancers) on soil biological parameters (bacterial population, urease, dehydrogenase, acid phosphatase and alkaline phosphatase) under foxtail millet cultivation in semi-arid region where soil and climatic constraints prevail in general. The bacterial population in the rhizosphere soil was found to be greater in all the treatments that received bacterial consortia appended with bio-enhancers compared to the remaining treatments as they are rich in microbial population. The soil enzyme activity was found to be higher when bioagents were used in conjunction with fertilizers, similar to bacterial population. The use of bacterial consortia or bio-enhancers alone also improved enzyme activity when compared to the control, while fertilizers alone, were poor in the activity of above enzymes. The percentage increase in the overall biological activity over the initial value was found to be highest when bioagents were used along with the chemical fertilizers at 50% flowering and harvest stages whereas it was found least in the control and lower in the treatments applied with chemical fertilizers alone.

[1]  M. M. Reddy,et al.  Effect of Natural, Organic and Inorganic Farming Methods on Microorganisms and Enzymes Activity of Maize Rhizosphere , 2020 .

[2]  S. Krishnaprabu.  Influence of Integrated Nutrient Management in Pearl Millet , 2018, International Journal of Pure & Applied Bioscience.

[3]  S. Kansal,et al.  Effect of organic nutrient sources on growth, yield and quality of bell pepper (Capsicum annuum L.) under mid hill condition of Himachal Pradesh , 2018 .

[4]  M. Sharanappa.  Response of Finger Millet under Organic Nutrient Management in Groundnut (Arachis hypogaea L.) – Finger Millet (Eleusine coracana L.) Cropping System , 2017 .

[5]  K. B. Palanna,et al.  Effect of Panchagavya, Jeevamrutha and Cow Urine on Beneficial Microorganisms and Yield of Capsicum (Capsicum annuum L. var. grossum) , 2017 .

[6]  S. J. Basha.  PLANTING GEOMETRY, IRRIGATION AND ORGANIC NUTRIENT MANAGEMENT PRACTICES FOR AEROBIC RICE IN NORTHERN TRANSITIONAL ZONE OF KARNATAKA , 2015 .

[7]  V. Nagendra.  INFLUENCE OF RICE PRODUCTION SYSTEMS AND NUTRIENT MANAGEMENT PRACTICES ON RICE YIELD AND SOIL PROPERTIES , 2015 .

[8]  Almas Zaidi,et al.  Role of phosphate-solubilizing microorganisms in sustainable agriculture — A review , 2011, Agronomy for Sustainable Development.

[9]  V. Kuligod,et al.  Effect of farm yard manure treated with jeevamrutha on yield attributes, yield and economics of sunflower (Helianthus annuus L.). , 2009 .

[10]  R. Burns,et al.  Comparison of microbial numbers and enzymatic activities in surface soils and subsoils using various techniques , 2002 .

[11]  M. Aon,et al.  II. Temporal and spatial evolution of enzymatic activities and physico-chemical properties in an agricultural soil , 2001 .

[12]  E. Kandeler,et al.  Aggregate stability and soil microbial processes in a soil with different cultivation , 1993 .

[13]  J. M. Bremner,et al.  Assay of urease activity in soils , 1972 .

[14]  D. A. Klein,et al.  SOIL DEHYDROGENASE ACTIVITY , 1964 .