Occasional tillage has no effect on soil microbial biomass, activity and composition in Vertisols under long-term no-till

2015 ◽  
Vol 52 (2) ◽  
pp. 191-202 ◽  
Author(s):  
Vivian A. Rincon-Florez ◽  
Yash P. Dang ◽  
Mark H. Crawford ◽  
Peer M. Schenk ◽  
Lilia C. Carvalhais
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Soil Microbial ◽  
No Till ◽  
Biomass Activity

LONG-TERM LAND USE INFLUENCES SOIL MICROBIAL BIOMASS P AND S, PHOSPHATASE AND ARYLSULFATASE ACTIVITIES, AND S MINERALIZATION IN A BRAZILIAN OXISOL

2013 ◽  
Vol 25 (4) ◽  
pp. 397-406 ◽  
Author(s):  
Elcio L. Balota ◽  
Ines F. Yada ◽  
Higo Amaral ◽  
Andre S. Nakatani ◽  
Richard P. Dick ◽  
...  
Keyword(s):  
Land Use ◽  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Soil Microbial ◽  
S Mineralization ◽  
Microbial Biomass P

scholarly journals Effects of liming on the microbial biomass and its activities in soils long-term contaminated by toxic elements

2011 ◽  
Vol 52 (No. 8) ◽  
pp. 345-352 ◽  
Author(s):  
G. Mühlbachová ◽  
P. Tlustoš
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Respiratory Activity ◽  
Soil Microbial Communities ◽  
Microbial Biomass C ◽  
Negative Effects ◽  
Lead Smelter ◽  
Soil Microbial ◽  
Hydrogen Carbonates

The effects of liming by CaO and CaCO<sub>3</sub> on soil microbial characteristics were studied during laboratory incubation of long-term contaminated arable and grassland soils from the vicinity of lead smelter near Př&iacute;bram (Czech Republic). The CaO treatment showed significant negative effects on soil microbial biomass C and its respiratory activity in both studied soils, despite the fact that microbial biomass C in the grassland soil increased sharply during the first day of incubation. The metabolic quotient (qCO<sub>2</sub>) in soils amended by CaO showed greater values than the control from the second day of incubation, indicating a possible stress of soil microbial pool. The vulnerability of organic matter to CaO could be indicated by the availability of K<sub>2</sub>SO<sub>4</sub>-extractable carbon that increased sharply, particularly at the beginning of the experiment. The amendment of soils by CaCO<sub>3 </sub>moderately increased the soil microbial biomass. The respiratory activity and qCO<sub>2</sub> increased sharply during the first day of incubation, however it is not possible to ascribe them only to microbial activities, but also to CaCO<sub>3</sub> decomposition in hydrogen carbonates, water and CO<sub>2</sub>. The pH values increased more sharply under CaO treatment in comparison to CaCO<sub>3</sub> treatment. The improvement of soil pH by CaCO<sub>3</sub> could be therefore more convenient for soil microbial communities.

Soil microbial biomass and the fate of phosphorus during long-term ecosystem development

2012 ◽  
Vol 367 (1-2) ◽  
pp. 225-234 ◽  
Author(s):  
Benjamin L. Turner ◽  
Hans Lambers ◽  
Leo M. Condron ◽  
Michael D. Cramer ◽  
Jonathan R. Leake ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Soil Microbial Biomass ◽  
Ecosystem Development ◽  
Soil Microbial

scholarly journals Soil Microbial Biomass Carbon under Rhizosphere and Non- Rhizosphere of Maize after a Long-Term Nitrogen Fertilization and Tillage Systems

2013 ◽  
Vol 16 (1) ◽  
pp. 63-68
Author(s):  
. Dermiyati ◽  
Eva Firdaus ◽  
Muhajir Utomo ◽  
Mas Achmad Syamsul Arif ◽  
Sutopo Ghani Nugroho
Keyword(s):  
Microbial Biomass ◽  
Nitrogen Fertilizer ◽  
Soil Microbial Biomass ◽  
Microbial Biomass Carbon ◽  
Maize Plant ◽  
Biomass Carbon ◽  
Tillage Systems ◽  
Soil Microbial ◽  
Soil Microbial Biomass Carbon

This research aimed to study the soil microbial biomass carbon (SMBC) under maize plant after a long-term application of nitrogen fertilizer and tillage systems (at the 37th growing season). The treatments were arranged in a factorial (3x3) in a randomized completely block design with 3 replications. The first factor was tillage systems, namely intensive tillage (IT) system, minimum tillage (MT) system, and no tillage (NT) system, and the second factor was the long-term application of nitrogen fertilizer, namely 0, 100, and 200 kg N ha-1. Data were analyzed using an orthogonal contrast test and a correlation test between SMBC and organic-C, total-N, and pH of the soil. The results showed that, in the rhizosphere and non-rhizosphere of maize plant, MT system increased the SMBC compared to NT and IT systems. However, application of long-term application of nitrogen fertilizer did not increase the SMBC. Nevertheless, fertilizer application of 100 kg N ha-1 increased the SMBC compare to 200 kg N ha-1.Furthermore, the combination of MT system and 100 kg N ha-1 could increase the SMBC compared to the other combined treatment between tillage systems and N fertilization doses. The SMBC was higher in the rhizosphere than in non-rhizosphere of maize plant.Keywords: Non-rhizosphere, rhizosphere, soil microbial biomass carbon, tillage systems

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