Influence of soil properties on urease activity under different agro-ecosystems
TL;DR: In this article, Urease activity (by buffer and non-buffer method) of different agro-ecosystems in alluvial soil was studied and multiple regression analysis showed that the stabilization of urease activation in the soils studied was due to an organic matter humus complex.
Abstract: Urease activity (by buffer and non-buffer method) of soils of different agro-ecosystems in alluvial soil was studied. Urease activity by buffer method records a higher value than the non-buffer method. Both the methods showed significant positive correlation (0.99**) between each other. Urease activity by both methods showed positive correlation with organic matter (0.88** and 0.89**, buffer method) and clay content (0.91** and 0.83*, non-buffer method)) of the soils. Multiple regression analysis showed that the stabilization of urease activity in the soils studied was due to an organic matter – enzyme complex. Among the organic matter humus C plays a dominating role to control the urease activity of the soils.
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TL;DR: In this article, short-range ordered aluminum hydroxide exhibited a strong affinity for laccase from Trametes villosa (Xm = 6.18μg−mg−1) as evidenced by an H-type adsorption isotherm.
47 citations
TL;DR: In this article, the activity of dehydrogenases and urease in forest peat soils of different fertility was determined by analyzing 23 experimental plots localised in central and northern Poland, and the results showed that the highest average dehydrogenase activity in the soil surface level was observed in forest fens, transition bogs and raised bogs soils.
Abstract: The aim of the study was to determine the activity of dehydrogenases and urease in forest peat soils of different fertility. There were selected 23 experimental plots localised in central and northern Poland. The research was conducted on forest fens, transition bogs and raised bogs. The biggest differences in soil physical and chemical properties were detected between fen and raised bog soils while raised bog soils and transition bog soils differed the least. Statistically significant differences between particular subtypes of peat soils were observed for soil pH-H2O, pH-KCl, C/N ratio as well as the content of organic carbon, nitrogen, calcium and potassium. The highest average dehydrogenase activity in the soil surface level was observed in fen soils, and the lowest – in raised bogs soils. The results obtained on urease activity were similar. Differences in urease activity in the studied soil types were shown. Dehydrogenase activity did not reveal statistically significant diversity. The activity of urease was negatively correlated with the content of carbon, C/N ratio, hydrolytic acidity and moisture. Also the increase in enzymatic activity accompanied by the increase in pH has been observed.
27 citations
Cites background from "Influence of soil properties on ure..."
...Urease in soil is closely connected with organic matter (Alef and Nannipieri 1995, Chakrabarti et al. 2004)....
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TL;DR: Long-term use of these practices could be recommended for reclamation and improving soil health and crop productivity of degraded lands of central India, and one-way operational role of soil enzymes was revealed.
25 citations
TL;DR: Wang et al. as discussed by the authors investigated the effect of Agaricus bisporus residues return on soil fertility, compared the effects of five treatments on soil nutrients, soil enzymatic activities, N use efficiency and crop yields in a paddy soil under a rice-wheat rotation.
Abstract: In the Peoples Republic of China, more than 4 Mt of fungal residues needs to be treated yearly. To investigate the effect of Agaricus bisporus residues return on soil fertility, this study compared the effects of five treatments on soil nutrients, soil enzymatic activities, N use efficiency and crop yields in a paddy soil under a rice-wheat rotation. Five treatments were designed including application of chemical fertilizer only (CF), a combined application of 30% fungal residues and 70% chemical fertilizer with the ratio of total N in the fungal residues to that in CF being 0.3:1 (30%FR), a combined application of 70% fungal residues and 30% chemical fertilizer with the ratio of total N in the fungal residues to that in CF being 0.7:1 (70%FR), a full dose of fungal residues return only with the ratio of total N in fungal residues to that in CF being 1:1 (100%FR), and a full return of fungal residues only with the ratio of total N in fungal residues to that in CF being 1.5:1 (150%FR). We found that the content of soil nutrients and soil enzymatic activities in the same treatment were higher at VGS (vegetative growth stage) than at RGS (reproductive growth stage) in rice and wheat seasons. 100%FR and 150%FR treatments had higher level of soil organic matter, available N, P, K, invertase, urease, neutral-phosphatase, catalase, N use efficiency and crop yields than CF treatment. These results indicated that A. bisporus residues return could positively affect soil nutrients, soil enzymatic activities, N use efficiency and crop yields as organic manure in a paddy soil. The information obtained will be helpful to more rational utilization of fungal residues.
22 citations
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03 Feb 1983
12,173 citations
14 Feb 1996
8,749 citations
"Influence of soil properties on ure..." refers methods in this paper
...Organic carbon (C) was determined as in Nelson and Sommers (1982) and total nitrogen according to the method of Sankaram (1966)....
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01 Jan 1982
5,659 citations
"Influence of soil properties on ure..." refers methods in this paper
...Organic carbon (C) was determined as in Nelson and Sommers (1982) and total nitrogen according to the method of Sankaram (1966)....
[...]
01 Jan 2017
TL;DR: Piper as discussed by the authors presents a survey of methods for soil and plant analysis, with a focus on a specific analysis or group of related analyses, and gives the working details of all or nearly all the existing methods.
Abstract: BOOKS on methods of analysis can be divided into two classes, one of which is the ‘collected methods’ type. Here each chapter or section of the book is devoted to a specific analysis or group of related analyses, and gives the working details of all or nearly all the existing methods. Such books are not only very useful and convenient but also are a necessity for those analysts to whom the original papers in the literature are not easily accessible. It is, however, the other class of book that the analyst most appreciates, namely, the book in which he is not bewildered by an array of methods but is presented with a selection recommended from considerable experience. Dr. Piper has compiled his book along these lines, and all the methods, with a very few exceptions, are those in use at the Waite Agricultural Research Institute. Concise, and more important still, precise working details are given with ample explanation and a wealth of guidance and help.Soil and Plant AnalysisA Laboratory Manual of Methods for the Examination of Soils and the Determination of the Inorganic Constituents of Plants. By Dr. C. S. Piper. (A Monograph from the Waite Agricultural Research Institute.) Pp. xiv + 368. (Adelaide: University of Adelaide, 1942.) 15s.
4,022 citations