Impact of Chemically Diverse Organic Residue Amendment on Soil Enzymatic Activities in a Sandy Loam Soil

Abstract

To monitor soil biological quality, it is of paramount importance to assess how chemically diverse organic residue amendments reciprocate to organic matter. The present incubation study aimed to evaluate the effect of organic residue amendments varying widely in their biochemical composition on the dynamics of soil enzymatic activity. The changes in the pattern of soil enzymatic activity have been monitored over a period of 63 days using a total of eleven different crop residues. The enzyme activity (dehydrogenase, fluorescein diacetate hydrolysis, acid phosphatase, alkaline phosphatase and phytase) in soils amended with chemically diverse organic residues were significantly higher as compared to the control. It was further observed that the enzymatic activities in Azadirachta indica, Avena sativa and Lens culinaris continued to be higher up to 28 days after their incorporation (DAI). Our study showed that plant residues varying in different cellulose and hemicellulose contents influenced the enzymatic activities as well as functional diversity of soil microbial communities.

Assessment of Structural Components in the Formation of Productivity of Different Lens culinaris Varieties Against the Background of the Use of Mineral Fertilizers

“…The positive effect of nitrogen and phosphorus fertilizers on the structural components of lentil yield was noted: the mass of 1000 seeds, the number of seeds in a bean, the number of beans, opacity (Ali et al, 2017;Kumar et al, 2023;Louarn et al, 2021;Pandey et al, 2016;Sehgal et al, 2021;Singh et al, 2018). This is explained by the fact that fertilizers, namely phosphorous, stimulate flowering and fruiting, which leads to the formation of more beans and also increases the division of seed cells and the formation of fats and albumins (Kumar et al, 2022;Sharma et al, 2023). In the studies mentioned previously it is noted that different doses of phosphorus fertilizers (from 40 to 120 kg/ha) contributed to the positive effect at naturally different levels of mineral nutrition (from 2.2-9.1 ppm of P 2 O 5 and 6-9 ppm of N-NO 3 ).…”