scholarly journals Checklist of amphibians in a rice paddy area in the Uruguayan savanna, southern Brazil

Check List ◽  
2014 ◽  
Vol 10 (5) ◽  
pp. 1014-1019 ◽  
Author(s):  
Leonardo Moreira ◽  
Débora Knauth ◽  
Leonardo Maltchik
Keyword(s):  
Rice Paddy ◽  
Southern Brazil ◽  
Paddy Area

Regional allocation of irrigation water in a rice paddy area with water-saving practices

2011 ◽  
Vol 25 (2) ◽  
pp. 81-96 ◽  
Author(s):  
Shigeya Maeda ◽  
Tatsuya Nagamochi ◽  
Toshihiko Kawachi ◽  
Junichiro Takeuchi
Keyword(s):  
Irrigation Water ◽  
Rice Paddy ◽  
Water Saving ◽  
Paddy Area ◽  
Regional Allocation

scholarly journals Herbicides Persistence in Rice Paddy Water in Southern Brazil

10.5772/32727 ◽  
2011 ◽  
Author(s):  
Renato Zanella ◽  
Martha B. ◽  
Sandra C. ◽  
Caroline do A. Friggi ◽  
Osmar D. ◽  
...  
Keyword(s):  
Rice Paddy ◽  
Southern Brazil ◽  
Paddy Water

Dynamics of the superficial fluxes over a flooded rice paddy in southern Brazil

2019 ◽  
Vol 276-277 ◽  
pp. 107650 ◽  
Author(s):  
Marcelo Bortoluzzi Diaz ◽  
Débora Regina Roberti ◽  
Janaina Viário Carneiro ◽  
Vanessa de Arruda Souza ◽  
Osvaldo Luiz Leal de Moraes
Keyword(s):  
Rice Paddy ◽  
Southern Brazil ◽  
Flooded Rice

scholarly journals The Fallow Period Plays an Important Role in Annual CH4 Emission in a Rice Paddy in Southern Brazil

2021 ◽  
Vol 13 (20) ◽  
pp. 11336
Author(s):  
Cristiano Maboni ◽  
Tiago Bremm ◽  
Leonardo José Gonçalves Aguiar ◽  
Walkyria Bueno Scivittaro ◽  
Vanessa de Arruda de Arruda Souza ◽  
...  
Keyword(s):  
Growing Season ◽  
Rice Paddy ◽  
Methane Emissions ◽  
Anthropogenic Sources ◽  
Southern Brazil ◽  
Irrigated Rice ◽  
Fallow Period ◽  
Land Preparation ◽  
Flooded Areas ◽  
Rice Growing Season

Paddy fields are significant anthropogenic sources of methane (CH4) emissions. In southern Brazil, rice is grown in lowland flooded areas once a year, followed by a long fallow period. This study aimed to measure CH4 fluxes in a rice paddy field in southern Brazil during the rice-growing season of 2015/2016 and the following fallow period. The fluxes were estimated using the eddy covariance (EC) technique and soil chamber (SC). Diurnal and seasonal variations of CH4 fluxes and potential meteorological drivers were analyzed. The CH4 fluxes showed distinct diurnal variations in each analyzed subperiod (vegetative, reproductive, pre-harvest, no rice, and land preparation), characterized by a single-peak diurnal pattern. The variables that most influenced methane emissions were air and surface temperatures. In the growing season, the rice vegetative stage was responsible for most of the measured emissions. The accumulated annual emission estimated was 44.88 g CH4 m−2 y−1, being 64% (28.50 g CH4 m−2) due to the rice-growing season and 36% (16.38 g CH4 m−2) due to the fallow period. These results show the importance of including fallow periods in strategies to mitigate methane emissions in flood irrigated rice-growing areas.

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