Study on the effect of different levels of organic and inorganic fertilizers on microbial enzymes and soil mesofauna in soybean ecosystem

Abstract

Soybean (Glycine max (L) Merril). is also called Golden bean belongs to family Fabaceae is native to China having high nutritive value and oil content. Due to usage of inorganic fertilizers the fertility of soil and yield soybean has declined. Organic manures known to increase the soil fertility, structure and also influence the microbial enzymes activity and soil mesofauna. In this context the present investigation was undertaken to study, the different doses of farm yard manure and chemical fertilizers on the soil mesofauna and microbial enzymes at GKVK, Bangalore during the year 2013-2014. The investigation revealed that higher abundance of soil mesofauna (18.53) was recorded in 20 tons of FYMha-1 compared to the treatments with recommended package of practices (12.35) and inorganic fertilizer (10.30) alone. Soil mesofauna exhibited a significant positive relation with the microbial enzymes like dehydrogenase, acid and alkaline phosphtases and urease. The results of the multiple linear regression analysis showed that the influence of exchangeable calcium, available potassium and available phosphorous, exchangeable magnesium, dehydrogenase, alkaline phosphatase and urease on the abundance of soil mesofauna was up to 79 per cent. Higher rhizobium nodule number (64.93/plant) and yield (16.01 q/ha) of soybean found to increase with increase in farmyard manure application.

Correlation between Root Nodule Characteristic and Growth Component of Jack Bean Intercropped with Aloe Plant in Calcareous Soil

“…Treatment combinations or control resulted in no differences in active nodule number. Prasanti et al [10] reported that Organic manures had been shown to improve soil fertility and structure and affect microbial enzyme activity and soil biodiversity. The investigation at GKVK, Bangalore, during 2013-2014 revealed that 20 tons of FYMha -1 showed a higher abundance of soil mesofauna (18.53) when compared to inorganic fertilizer and the recommended treatment, showing an abundance of soil mesofauna of only 10.30 and 12.35, respectively.…”

“…It was a two-factor Randomized Complete Block Design experiment consisting of three replications. The first factor was the application of cow manure at four rates (10,15,20, and 25 t ha 1 ), and the second factor was nitrogen source, including urea at a dose of 100 and 150 t ha -1 and ammonium sulfate (AS) at a dose of 200 and 300 kg ha -1 . Control treatment was jack bean monoculture, applied with manure and nitrogen fertilizer at minimum rates.…”

No-Till Technology as a Factor of Activity of Soil Invertebrate in Agricultural Chernozems of Stavropol Region

“…Также численность и разнообразие представителей мезофауны сокращало применение минеральных удобрений, что согласуются с результатами G. Prasanthi с соавт. (39).…”

Evaluate the Capability of Some Local Fungal Isolates to Produce Pectinase Enzyme using Some Fruit Peels

“…In the field of biotechnology, the process of producing enzymes from microorganisms is one of the most current approaches with a bright future (Prasanthi et al, 2019;Sharma et al, 2021). Pectinase is an acidic polysaccharide with a basic structure that includes D-galacturonic acid molecules in the main chain connected by a (1-4) bond and Arabinose and Xylose molecules in the side chain (Mohnen, 2008).…”