Control of paddy soil redox condition on gross and net ammonium fixation and defixation

Geoderma ◽  
2021 ◽  
Vol 400 ◽  
pp. 115151
Author(s):  
Heleen Deroo ◽  
Masuda Akter ◽  
Orly Mendoza ◽  
Pascal Boeckx ◽  
Steven Sleutel
Keyword(s):  
Paddy Soil ◽  
Redox Condition ◽  
Soil Redox ◽  
Ammonium Fixation

Waterlogging and soil reduction affect the amount and apparent molecular weight distribution of dissolved organic matter in wetland soil: a laboratory study

Soil Research ◽  
2018 ◽  
Vol 56 (1) ◽  
pp. 28 ◽  
Author(s):  
Asmaa Rouwane ◽  
Malgorzata Grybos ◽  
Isabelle Bourven ◽  
Marion Rabiet ◽  
Gilles Guibaud
Keyword(s):  
Molecular Weight ◽  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Humic Substances ◽  
Apparent Molecular Weight ◽  
Redox Condition ◽  
Redox Conditions ◽  
Wetland Soil ◽  
Soil Redox ◽  
Reducing Conditions

The release of dissolved organic matter (DOM) from wetland soils is an important pathway for the input of organic compounds into adjacent aquatic environments. In the present study we investigated, under controlled laboratory conditions, the quantity and quality of DOM released from a wetland soil subject to waterlogging and reducing conditions. Three soil redox conditions (oxic, moderately reducing and advanced reducing) were distinguished based on nitrate, ferrous ions and sulfate concentrations in soil solution. Under each redox condition, the quantity (dissolved organic carbon (DOC), humic substances and peptides plus proteins (P-PN) and quality (aromaticity; specific ultraviolet absorbance at 254 nm (SUVA254nm)) and apparent molecular weight (aMW) distribution) of DOM were investigated. The results showed that soil redox condition affects the amount and properties of mobilised DOM. The rate of DOM release and SUVA254 values were highest during the transition from oxic to moderately reducing conditions, whereas both stabilised during progression to advanced reducing conditions. In addition, the mobilised DOM is expected to be more reactive because of an increase in polar substituents in aromatic structures between oxic and moderately reducing conditions. During the development of moderately reducing conditions, dissolved humic substances increased significantly, whereas their aMW distribution (between 500 and 6000 ) remained constant for each of the three different redox conditions. In contrast, the quantity of dissolved P-PN remained low and steady under the three redox conditions, whereas the aMW distribution of protein-like and microbial by-product-like compounds decreased during the development of reducing conditions (aMW of compounds between 100 and >100 000).

Effect of long-term fertilization on archaeal community structure in cal-careous purplish paddy soil

2011 ◽  
Vol 19 (3) ◽  
pp. 369-376
Author(s):  
Gu Yunfu ◽  
Zhang Xiaoping ◽  
Tu Shihua ◽  
Lindström Kristina
Keyword(s):  
Community Structure ◽  
Paddy Soil ◽  
Archaeal Community

Diversity of Microbial Community of Paddy Soil Types in Double-Rice Crop-ping System

2010 ◽  
Vol 36 (5) ◽  
pp. 826-832
Author(s):  
Chuan-Deng YI ◽  
Li-Hong WANG ◽  
Xiao-Ping XIAO ◽  
Guang-Li YANG ◽  
Yue-Gao HU ◽  
...  
Keyword(s):  
Microbial Community ◽  
Paddy Soil ◽  
Rice Crop ◽  
Soil Types ◽  
Double Rice

Influence of Long-term Fertilizations on Nutrients and Fungal Communities in Typical Paddy Soil of South China

2017 ◽  
Vol 43 (2) ◽  
pp. 286 ◽  
Author(s):  
Dan-Mei CHEN ◽  
Ling YUAN ◽  
Jian-Guo HUANG ◽  
Jian-Hua JI ◽  
Hong-Qian HOU ◽  
...  
Keyword(s):  
South China ◽  
Paddy Soil ◽  
Fungal Communities

Critical Coagulation Concentration of Paddy Soil Clays in Sodium–Ferrous Iron Electrolyte

2004 ◽  
Vol 68 (3) ◽  
pp. 789 ◽  
Author(s):  
Atinut Saejiew ◽  
Olivier Grunberger ◽  
Somsri Arunin ◽  
Fabienne Favre ◽  
Daniel Tessier ◽  
...  
Keyword(s):  
Paddy Soil ◽  
Ferrous Iron ◽  
Critical Coagulation Concentration ◽  
Soil Clays

Arsenic volatilization in flooded paddy soil by the addition of Fe-Mn-modified biochar composites

2019 ◽  
Vol 674 ◽  
pp. 327-335 ◽  
Author(s):  
Lina Lin ◽  
Zhengguo Song ◽  
Xuewei Liu ◽  
Zulqarnain Haider Khan ◽  
Weiwen Qiu
Keyword(s):  
Paddy Soil ◽  
Modified Biochar ◽  
Flooded Paddy Soil

Clostridium species and γ-BHC degradation in paddy soil

1979 ◽  
Vol 11 (6) ◽  
pp. 645-649 ◽  
Author(s):  
N. Ohisa ◽  
M. Yamaguchi
Keyword(s):  
Paddy Soil ◽  
Clostridium Species

Mitigation of carbon dioxide by accelerated sequestration from long-term biochar amended paddy soil

2021 ◽  
Vol 209 ◽  
pp. 104955
Author(s):  
Qianqian Zhang ◽  
Pengpeng Duan ◽  
Anna Gunina ◽  
Xi Zhang ◽  
Xiaoyuan Yan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Paddy Soil
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