Urease activity and its relation to soil organic matter, microbial biomass nitrogen and urea-nitrogen assimilation by maize in a Brazilian Oxisol under no-tillage and tillage systems

2000 ◽  
Vol 32 (1) ◽  
pp. 52-59 ◽  
Author(s):  
R. Roscoe ◽  
C. A. Vasconcellos ◽  
A. E. Furtini-Neto ◽  
G. A. A. Guedes ◽  
L. A. Fernandes
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Urease Activity ◽  
Nitrogen Assimilation ◽  
No Tillage ◽  
Tillage Systems ◽  
Microbial Biomass Nitrogen ◽  
Urea Nitrogen

Chemical composition of cover crops and soil organic matter pools in no‐tillage systems in the Cerrado

2021 ◽  
Author(s):  
Arminda Moreira de Carvalho ◽  
Luana Ramos Passos Ribeiro ◽  
Robélio Leandro Marchão ◽  
Alexsandra Duarte de Oliveira ◽  
Karina Pulrolnik ◽  
...  
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Soil Organic Matter ◽  
Cover Crops ◽  
No Tillage ◽  
Tillage Systems

Microbial Activity in Soils of Vegetation-Growing Concrete Slopes

2012 ◽  
Vol 599 ◽  
pp. 124-127
Author(s):  
Cheng Hu Zhang ◽  
Ting Ting Song ◽  
Ju Liu ◽  
Hui Juan Xia ◽  
Jian Zhu Wang
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Negative Correlation ◽  
Microbial Biomass Carbon ◽  
Significant Negative Correlation ◽  
Concrete Technology ◽  
Microbial Biomass Nitrogen ◽  
Natural Restoration ◽  
Microbial Quotient

Natural restoration slope and vegetation-growing concrete slope were selected as plots. Soil water content (SWC), pH, and soil organic matter, total nitrogen content (TN), total organic carbon (TOC), microbial biomass carbon (MBC), microbial biomass nitrogen (MBN), basal respiration, microbial quotient and metabolic quotient (qCO2) were analyzed. The main results show that: Soil organic matter, TN and MBC of 0-10 cm soil in the natural restoration slope are significantly lower than that in the vegetation-growing concrete slopes at 0.05 level. Both MBC and MBN show a highly significant positive correlation with soil organic matter and TN. Microbial quotient shows a highly significant negative correlation with TOC and MBN, and shows a significant negative correlation with MBC. The qCO2 shows a highly significant negative correlation with pH, and a significant negative correlation with MBC. The vegetation-growing concrete technology can improve the soil ecosystem in the impaired slope.

scholarly journals Effects of Five Years Adoption of No-Tillage Systems for Vegetables Crops in Soil Organic Matter Contents

2018 ◽  
Vol 09 (01) ◽  
pp. 117-128 ◽  
Author(s):  
Carlos E. P. Lima ◽  
ítalo M. R. Guedes ◽  
Juscimar da Silva ◽  
Flávia A. Alcântara ◽  
Nuno R. Madeira ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
No Tillage ◽  
Tillage Systems

Soil physical attributes and organic matter accumulation under no-tillage systems in the Cerrado

Soil Research ◽  
2019 ◽  
Vol 57 (7) ◽  
pp. 712
Author(s):  
J. L. R. Torres ◽  
J. C. Mazetto Júnior ◽  
J. Silva Júnior ◽  
D. M. S. Vieira ◽  
Z. M. Souza ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Crop Production ◽  
Conventional Tillage ◽  
Native Forest ◽  
Organic Carbon Content ◽  
No Tillage ◽  
Deep Soil ◽  
Tillage Systems ◽  
Physical Attributes

Soil management has a major effect on soil physical characteristics, and consequently on soil organic matter (SOM) content, which are important for the success of crop production. The aim of this study was to evaluate the soil physical attributes and the accumulation of SOM in no-tillage systems (NTS) with different periods of implantation in a conventional tillage area and to compare them with native forest (NF) in the Cerrado biome. The experiment was planned in a 3 × 4 factorial scheme, consisting of three soil treatments (NTS for 17 years (NTS17), NTS for 5 years (NTS5) and NF) and four soil depths (0–0.1, 0.1–0.2, 0.2–0.3 and 0.3–0.4 m), with a completely randomised design and four replicates. At deep soil layers (0.2–0.4 m) the NTS17 area had a greater soil density than the NTS5 and NF areas, and greater SOM compared with the NTS5 area. Soil macroporosity in the NTS5 area was below 10% at all soil depths evaluated. The NF area had the greatest total organic carbon content (1.39 dag kg–1), stock of carbon (16.63 Mg ha--1), amount of soil organic matter (28.66 Mg ha--1) and equivalent carbon credits (60.96 Mg ha–1). Carbon stocks were similar in the NTS areas in all soil depths evaluated. The results indicate that conventional tillage areas can be successfully recovered under the Cerrado edaphoclimatic conditions with the implantation of an NTS.

scholarly journals Nitrogen Immobilisation and Microbial Biomass Build-Up Induced by Miscanthus x giganteus L. Based Fertilisers

Agronomy ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1386
Author(s):  
Michael Stotter ◽  
Florian Wichern ◽  
Ralf Pude ◽  
Martin Hamer
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Microbial Biomass ◽  
Triticum Aestivum L ◽  
Microbial Biomass C ◽  
Microbial Biomass N ◽  
Miscanthus X Giganteus ◽  
Organic Fertilisers ◽  
Biomass N ◽  
Set Up

Cultivation of Miscanthus x giganteus L. (Mis) with annual harvest of biomass could provide an additional C source for farmers. To test the potential of Mis-C for immobilizing inorganic N from slurry or manure and as a C source for soil organic matter build-up in comparison to wheat (Triticum aestivum L.) straw (WS), a greenhouse experiment was performed. Pot experiments with ryegrass (Lolium perenne L.) were set up to investigate the N dynamics of two organic fertilisers based on Mis at Campus Klein-Altendorf, Germany. The two fertilisers, a mixture of cattle slurry and Mis as well as cattle manure from Mis-bedding material resulted in a slightly higher N immobilisation. Especially at the 1st and 2nd harvest, they were partly significantly different compared with the WS treatments. The fertilisers based on Mis resulted in a slightly higher microbial biomass C and microbial biomass N and thus can be identified as an additional C source to prevent nitrogen losses and for the build-up of soil organic matter (SOM) in the long-term.

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