Microbial biomass content and enzymatic activities after the application of organic amendments to a horticultural soil

Effect of Vermicompost on Yield and Yield Components of Two Corn Cultivars

“…In addition to its richness in essential plant nutrients, it also supplies plant growth promoting substances, humus forming microbes and Nfixers in the soil (Lenin et al, 2010). Organic manures act not only as a source of nutrients and organic matter, but also increase size, biodiversity and activity of the microbial population in soil, influence structure, nutrients get turnover and many other change related to physical, chemical and biological parameters of the soil (Albiach et al, 2000).Vermicomposting is one such viable technique for augmentation of organic source in soil, also, Application of vermicompost influences the physical, chemical and biological properties of soil, It improves the water holding capacity of the soil and it possesses vitamins and growth hormones which have a direct role on plant growth. Integrated use of organic N through vermicompost and fertilizer N enhanced the growth and yield attributes of crops (Thirunavukkarasu and Vinoth, 2013).…”

Microbial enzymatic activity and thermal effect in a tropical soil treated with organic materials

“…Organic treatments stimulated microbial growth and the enzymatic activity due to an enrichment of soil organic matter (Marinari et al, 2000). Soil microbial carbon correlated to cellulase and protease activities (r = 0.54, p < 0.001) (Table 2), indicating that production of extra cellular enzymes is related to microbial biomass enhancement (Albiach et al, 2000). Cellulase and protease enzymes are good markers of soil biological activity, since they are involved in microbial cycling of nitrogen-rich substrates and cellulose compounds, the most abundant components of organic matter.…”

“…CM also increased the production of proteases (49.68 mg Tyr g -1 soil 2 h -1 ) ( Figure 2B). Labile nitrogen compounds in CM have a relatively rapid turnover in soil, thus being readily utilized as a soil microorganisms substrate (Albiach et al, 2000). , respectively).…”

“…The main microbial enzymes involved in the mineralization of soil organic matter are cellulases, proteases, ureases and phosphatases (Albiach et al, 2000;Kunito et al, 2001). Cellulase decomposes cellulose compounds present in fresh plant residues that are continuously deposited above soil -the litter layer (Dilly & Nannipieri, 2001).…”

Tuber Growth and Quality of Potato var. Kufri Bahar as Affected by FYM, Vermicompost and Neem Cake under Western Haryana Conditions, India

“…induced greater interest in the utilization of organic amendments for crop production. Organic manures act not only as a source of nutrients and organic matter, but also increase microbial diversity and activity in soil, which influence soil structure and nutrients rotation, in addition to improvement in other physical, chemical and biological properties of the soil (Albiach et al, 2000;Edmeades, 2003), it also as slow motion source of plant nutrients to the crops and increases water holding capacity to preserve the water regime of the soil and acts as a buffer against change in soil pH (Upadhayay and Singh,2003). Thus, organic amendments/manures are environmentally benign and help in maintaining soil fertility as well as agricultural productivity.…”