scholarly journals Performance of a High-Yielding Modern Rice Cultivar Takanari and Several Old and New Cultivars Grown with and without Chemical Fertilizer in a Submerged Paddy Field

2009 ◽  
Vol 12 (3) ◽  
pp. 365-380 ◽  
Author(s):  
Renante D. Taylaran ◽  
Satomi Ozawa ◽  
Naoko Miyamoto ◽  
Taiichiro Ookawa ◽  
Takashi Motobayashi ◽  
...  
Keyword(s):  
Paddy Field ◽  
Rice Cultivar ◽  
Chemical Fertilizer ◽  
New Cultivars

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.

Composition of Archaeal Community in a Paddy Field as Affected by Rice Cultivar and N Fertilizer

2009 ◽  
Vol 58 (4) ◽  
pp. 819-826 ◽  
Author(s):  
Liqin Wu ◽  
Ke Ma ◽  
Qi Li ◽  
Xiubin Ke ◽  
Yahai Lu
Keyword(s):  
Paddy Field ◽  
Archaeal Community ◽  
Rice Cultivar ◽  
N Fertilizer

Nutrient balance in a paddy field with a recycling irrigation system

2005 ◽  
Vol 51 (3-4) ◽  
pp. 151-157 ◽  
Author(s):  
Y.W. Feng ◽  
I. Yoshinaga ◽  
E. Shiratani ◽  
T. Hitomi ◽  
H. Hasebe
Keyword(s):  
Nitrogen Fertilizer ◽  
Irrigation Water ◽  
Paddy Field ◽  
Irrigation System ◽  
Nutrient Balance ◽  
Chemical Fertilizer ◽  
Nitrogen Compounds ◽  
Runoff Water ◽  
Irrigation Period ◽  
Main Input

We studied nutrient balance in a paddy field that had a recycling irrigation system and evaluated the effect of the irrigation system on nutrient balance during the irrigation period, from April to August 2002. Chemical fertilizer was the main input of phosphorus; the soil absorbed about 56% of it. The amount of nitrogen supplied by the irrigation system was higher than in a representative paddy field, and the amount of nitrogen fertilizer used was decreased because the irrigation water was partly reused. About 20% of applied nitrogen was lost by denitrification. The net outflows of phosphorus and nitrogen were −0.37 and −3.98 kg ha−1, respectively. These results indicate that our study paddy field performed well in removing phosphorus and nitrogen compounds from runoff water. A recycling irrigation system can be considered an effective way of reducing the amounts of water and fertilizer used and reducing the outflow nutrients.

scholarly journals Growth and Yield Characteristics of Manaw Thu Kha, a Myanmar Rice Cultivar, Influenced by the Kind of Chemical Fertilizer and its Application Method

2005 ◽  
Vol 74 (3) ◽  
pp. 260-269 ◽  
Author(s):  
Aye Aye Han ◽  
Teruhisa Umezaki ◽  
Hiroshi Ehara ◽  
Yuichi Nagaya ◽  
Osamu Morita
Keyword(s):  
Rice Cultivar ◽  
Chemical Fertilizer ◽  
Growth And Yield ◽  
Application Method

scholarly journals Dry Matter Production and Grain Yield of High Yielding Rice Cultivar, Takanari, Directly Seeded in the Paddy Field with an ^|^ldquo;Air-assisted Drill^|^rdquo;

2012 ◽  
Vol 81 (4) ◽  
pp. 414-423 ◽  
Author(s):  
Takehiro Mukouyama ◽  
Takashi Motobayashi ◽  
Tadashi Chosa ◽  
Taiichiro Ookawa ◽  
Masami Furuhata ◽  
...  
Keyword(s):  
Grain Yield ◽  
Paddy Field ◽  
Dry Matter ◽  
Rice Cultivar ◽  
Dry Matter Production ◽  
Matter Production

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.

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