Soil Organic Carbon Fractions and Enzymes Activities as Affected by Organic and Inorganic Amendments in an Acid Soil of Meghalaya

Verma, Balwant; Choudhury, B. U.; Kumar, Manoj; Hazarika, S.; Ramesh, T.; Bordoloi, L. J.; Moirangthem, Prabha; Bhuyan, D.

doi:10.5958/0974-0228.2017.00008.1

Cited by 9 publications

(2 citation statements)

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“…The lowest value of SMBC in 100%N plot may be due to unfavourable environment for soil microorganisms on account of low pH due to use of urea alone over the years coupled with low crop productivity and hence low organic carbon content. Verma et al (2017) also observed that application of FYM or lime along with NPK fertilizer had significant effect on SMBC content in acid soil.…”

Section: Application Of Lime Along With Balanced 211mentioning

confidence: 79%

Long term effect of fertilizers, manure and lime on biological health of an acid soil

VERMA¹

2022

APSR

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The study was conducted under long term fertilizer experiment (LTFE) to assess the impact of nutrient management practices on biological health of acid soils under soybean-wheat cropping system at Birsa Agricultural University, Kanke, Ranchi, Jharkhand. Ten treatments were evaluated in randomized block design with three replications. The integrated nutrient management involving the use of organic manure together with inorganic fertilization exerted a significant positive effect on soil microbial biomass carbon, CO2 evolution, dehydrogenase activity (DHA), urease and microbial population. Similarly, use of lime along with NPK also showed improvement in enzymatic activities, soil microbial biomass carbon, and CO2 evolution compared to 100% NPK and control. The microbiological properties were drastically reduced in 100% N only treatment. Application of 100% NPK was found to superior over 100% NP, 100% N and 50% NPK and 100% N(S)PK while the same was significantly at par with 150% NPK. The effect between weedicide applied and hand weeded treatments was also statistically at par for the grain and straw yield of wheat as well as for the biological properties of the soil. Long term application of FYM/lime with NPK significantly increased the mean grain and straw yield of wheat over the years (1972-2019) compared to only inorganic fertilization and control. Overall, continuous application of FYM or lime along with 100% NPK improved the soil biological health and increased the crop yield in acid soil under wheat based cropping system.

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Section: Application Of Lime Along With Balanced 211mentioning

confidence: 79%

Long term effect of fertilizers, manure and lime on biological health of an acid soil

VERMA¹

2022

APSR

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“…On routine basis, soil organic carbon content is measured by wet oxidation method of Walkley and Black (1934) (soil carbon is oxidized by a strong oxidizing agent in an acidic medium), which reflects a portion of TOC in the soil. Verma et al (2013Verma et al ( , 2014 also reported that proportion of SOC to TOC varied from 10.2-47.4 % and 25-38 % in different organic systems and nutrient management practices. SOC content is highly dependent on changes in management practices.…”

Section: Soil Organic Carbon (Soc)mentioning

confidence: 99%

Effect of Nutrient Management Regimes on Soil Biological Properties - A Review

Mawlong

Verma²,

Kumar

et al. 2020

Research Biotica

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Soil quality assessment is very important aspect in determining long term sustainability; however it is governed by different physico-chemical and biochemical parameters. These are interrelated among them and controlled by different management practices like tillage, water, organic and inorganic source of nutrients etc. Among the different soil parameters, it was considered that soil biochemical parameters provide rapid and accurate estimates on soil quality and its evaluation require understanding of biochemical and microbiological soil properties. Among the several biochemical and microbiological properties, soil organic carbon fractions, microbial biomass and soil enzymes activities may be considered as an important property which governed soil health or quality. Soil organic carbon fractions includes total organic carbon, soil organic carbon (oxidizable carbon), labile carbon etc., microbial biomass and enzymes activities include content of microbial biomass carbon, nitrogen, phosphorus and activities of different enzymes like dehydrogenase, acid and alkaline phosphatase, Urease, β-glucosidase, Aryl sulphatase etc. It is established and proved that, nutrient management practices (application of fertilizers and manures) marked significant effect on SOC fractions and soil enzymes activities. In most of cases, the application of organic sources of nutrients as well as integrated nutrient management resulted in significant improvement in the soil biochemical properties, however, microbial properties like microbial biomass carbon, nitrogen, phosphorus and enzymes activities are very sensitive to nutrient management options compared to soil organic carbon fractions.

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