Impact of tillage practices on soil aggregation and humic substances under double‐cropping paddy field

2020 ◽  
Vol 112 (1) ◽  
pp. 624-632 ◽  
Author(s):  
Haiming Tang ◽  
Xiaoping Xiao ◽  
Chao Li ◽  
Wenguang Tang ◽  
Xiaochen Pan ◽  
...  
Keyword(s):  
Humic Substances ◽  
Paddy Field ◽  
Soil Aggregation ◽  
Tillage Practices ◽  
Double Cropping

Functional soil organic matter fractions in response to long-term fertilizer management in a double-cropping paddy field of southern China

2021 ◽  
pp. 1-9
Author(s):  
Haiming Tang ◽  
Chao Li ◽  
Lihong Shi ◽  
Li Wen ◽  
Kaikai Cheng ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Paddy Field ◽  
Southern China ◽  
Rice Paddy ◽  
Chemical Fertilizer ◽  
Protection Mechanism ◽  
Rice Paddy Field ◽  
Double Cropping

Abstract Soil organic matter (SOM) and its fractions play an important role in maintaining or improving soil quality and soil fertility. Therefore, the effects of a 34-year long-term fertilizer regime on six functional SOM fractions under a double-cropping rice paddy field of southern China were studied in the current paper. The field experiment included four different fertilizer treatments: chemical fertilizer alone (MF), rice straw residue and chemical fertilizer (RF), 30% organic manure and 70% chemical fertilizer (OM) and without fertilizer input as control (CK). The results showed that coarse unprotected particulate organic matter (cPOM), biochemically, physically–biochemically and chemically protected silt-sized fractions (NH-dSilt, NH-μSilt and H-dSilt) were the main carbon (C) storage fractions under long-term fertilization conditions, accounting for 16.7–26.5, 31.1–35.6, 16.2–17.3 and 7.5–8.2% of the total soil organic carbon (SOC) content in paddy soil, respectively. Compared with control, OM treatment increased the SOC content in the cPOM, fine unprotected POM fraction, pure physically protected fraction and physico-chemically protected fractions by 58.9, 106.7, 117.6 and 28.3%, respectively. The largest proportion of SOC to total SOC in the different fractions was biochemically protected, followed by chemically and unprotected, and physically protected were the smallest. These results suggested that a physical protection mechanism plays an important role in stabilizing C of paddy soil. In summary, the results showed that higher functional SOM fractions and physical protection mechanism play an important role in SOM cycling in terms of C sequestration under the double-cropping rice paddy field.

Surface energy partitioning and evapotranspiration over a double-cropping paddy field in Bangladesh

2011 ◽  
Vol 26 (9) ◽  
pp. 1311-1320 ◽  
Author(s):  
Md. Shahadat Hossen ◽  
Masayoshi Mano ◽  
Akira Miyata ◽  
Md. Abdul Baten ◽  
Tetsuya Hiyama
Keyword(s):  
Surface Energy ◽  
Paddy Field ◽  
Energy Partitioning ◽  
Double Cropping

Land use change from upland to paddy field in Mollisols drives soil aggregation and associated microbial communities

2020 ◽  
Vol 146 ◽  
pp. 103351 ◽  
Author(s):  
Xin Li ◽  
Huihui Zhang ◽  
Minglong Sun ◽  
Nan Xu ◽  
Guangyu Sun ◽  
...  
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Microbial Communities ◽  
Paddy Field ◽  
Soil Aggregation

Tillage practices of a clay loam soil affect soil aggregation and associated C and P concentrations

Geoderma ◽  
2011 ◽  
Vol 164 (3-4) ◽  
pp. 225-231 ◽  
Author(s):  
Aimé J. Messiga ◽  
Noura Ziadi ◽  
Denis A. Angers ◽  
Christian Morel ◽  
Léon-E. Parent
Keyword(s):  
Soil Aggregation ◽  
Clay Loam ◽  
Clay Loam Soil ◽  
Tillage Practices ◽  
Loam Soil

A New Forage Oat Cultivar 'Taehan' for Early-heading and High-yielding of Double Cropping Cultivation in Paddy Field

2013 ◽  
Vol 33 (4) ◽  
pp. 227-233
Author(s):  
Ouk-Kyu Han ◽  
Tae-Il Park ◽  
Hyung-Ho Park ◽  
Tae-Hwa Song ◽  
Young-Jin Oh ◽  
...  
Keyword(s):  
Paddy Field ◽  
Double Cropping

scholarly journals Effect of different long-term fertilizer managements on soil nitrogen fixing bacteria community in a double-cropping rice paddy field of southern China

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0256754
Author(s):  
Haiming Tang ◽  
Chao Li ◽  
Lihong Shi ◽  
Xiaoping Xiao ◽  
Kaikai Cheng ◽  
...  
Keyword(s):  
Paddy Field ◽  
Rice Paddy ◽  
Soil Microorganism ◽  
Organic Manure ◽  
Chemical Fertilizer ◽  
N Fixation ◽  
Soil N ◽  
Rice Paddy Field ◽  
Double Cropping

Soil microorganism plays an important role in nitrogen (N) fixation process of paddy field, but the related information about how soil microorganism that drive N fixation process response to change of soil phy-chemical characteristics under the double-cropping rice (Oryza sativa L.) paddy field in southern of China is need to further study. Therefore, the impacts of 34-years different long-term fertilization system on soil N-fixing bacteria community under the double-cropping rice paddy field in southern of China were investigated by taken chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) method in this paper. The field experiment were set up four different fertilizer treatments: chemical fertilizer alone (MF), rice straw and chemical fertilizer (RF), 30% organic manure and 70% chemical fertilizer (OM), and unfertilized as a control (CK). This results showed that compared with CK treatment, the diversity index of cbbLR and nifH genes with OM and RF treatments were significantly increased (p<0.05), respectively. Meanwhile, the abundance of cbbLR gene with OM, RF and MF treatments were increased by 23.94, 12.19 and 6.70×107 copies g-1 compared to CK treatment, respectively. Compared with CK treatment, the abundance of nifH gene with OM, RF and MF treatments were increased by 23.90, 8.82 and 5.40×109 copies g-1, respectively. This results indicated that compared with CK treatment, the soil autotrophic azotobacter and nitrogenase activities with OM and RF treatments were also significantly increased (p<0.05), respectively. There were an obvious difference in features of soil N-fixing bacteria community between application of inorganic fertilizer and organic manure treatments. Therefore, this results demonstrated that abundance of soil N-fixing bacteria community in the double-cropping rice paddy field were increased by long-term applied with organic manure and crop residue managements.

Effects of long‐term fertilizer management on soil bacterial diversity in double‐cropping paddy field of southern China

2020 ◽  
Vol 112 (5) ◽  
pp. 3644-3652
Author(s):  
Haiming Tang ◽  
Yilan Xu ◽  
Chao Li ◽  
Xiaoping Xiao ◽  
Kaikai Cheng ◽  
...  
Keyword(s):  
Bacterial Diversity ◽  
Paddy Field ◽  
Southern China ◽  
Fertilizer Management ◽  
Soil Bacterial Diversity ◽  
Double Cropping ◽  
Soil Bacterial

Early changes in water-stable aggregation induced by rotation and tillage in a soil under barley production

1993 ◽  
Vol 73 (1) ◽  
pp. 51-59 ◽  
Author(s):  
D. A. Angers ◽  
N. Samson ◽  
A. Légère
Keyword(s):  
Soil Water ◽  
Biochemical Properties ◽  
Soil Aggregation ◽  
Water Soluble ◽  
Hot Water ◽  
Soluble Carbohydrates ◽  
Hordeum Vulgare L ◽  
Organic C ◽  
Tillage Practices ◽  
Water Stable Aggregates

Crop rotations and tillage practices can alter the structure of die soil through their effects on soil disturbance and mixing and on organic matter (OM) accumulation and mineralization. The objective of this study was to determine the changes in soil water-stable aggregation induced by 4 yr of different rotation and tillage practices on a Kamouraska clay at La Pocatière, Quebec. The influence of soil water content (WC) at time of sampling and of different biological and biochemical properties on soil aggregation was also examined. Two rotations (continuous barley (Hordeum vulgare L.) vs. a 2-yr barley–red clover (Trifolium pratense L.) rotation) and three tillage treatments (moldboard plowing (MP) chisel plowing (CP) and no-tillage (NT)) were compared in a split-plot design. Measurements of the size distribution of water-stable aggregates were made on surface (0–7.5 cm) soil samples taken periodically during the 4-yr period. Rotations had no effect on soil aggregation. The mean-weight diameter (MWD) of water-stable aggregates did not vary significantly with time under the NT treatment during the study but decreased significantly under the MP and CP treatments. In the fourth growing season, MWD values in NT plots were on average 40% higher than in MP and CP plots, which were both similar. The larger values in MWD under NT were attributable to a larger proportion of aggregates > 2 mm at the expense of smaller ones (< 1 mm). The MWD data showed important temporal fluctuations, which could in part be explained by the effects of WC at time of sampling. This effect of WC on MWD was less apparent under NT, which suggested that these aggregates were less susceptible to slaking. Among different OM fractions, the proportion of organic C present as hot-water-soluble carbohydrates was best correlated with MWD. Key words: Soil management, aggregation, slaking

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