scholarly journals Nitrogen Uptake by Cover Crops and Inorganic Nitrogen Dynamics in Andisol Paddy Rice Field

2009 ◽  
Vol 44 (4) ◽  
pp. 201-210 ◽  
Author(s):  
Masakazu KOMATSUZAKI
Keyword(s):  
Nitrogen Uptake ◽  
Cover Crops ◽  
Rice Field ◽  
Inorganic Nitrogen ◽  
Nitrogen Dynamics ◽  
Paddy Rice ◽  
Paddy Rice Field

scholarly journals Soil Nitrogen Dynamics in a Managed Temperate Grassland Under Changed Climatic Conditions

Water ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 931
Author(s):  
Mona Giraud ◽  
Jannis Groh ◽  
Horst H. Gerke ◽  
Nicolas Brüggemann ◽  
Harry Vereecken ◽  
...  
Keyword(s):  
Nitrogen Uptake ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Nitrogen Dynamics ◽  
Climatic Conditions ◽  
Undisturbed Soil ◽  
Nitrogen Emissions ◽  
Growing Period ◽  
Grassland Type ◽  
Wide Range

Grasslands are one of the most common biomes in the world with a wide range of ecosystem services. Nevertheless, quantitative data on the change in nitrogen dynamics in extensively managed temperate grasslands caused by a shift from energy- to water-limited climatic conditions have not yet been reported. In this study, we experimentally studied this shift by translocating undisturbed soil monoliths from an energy-limited site (Rollesbroich) to a water-limited site (Selhausen). The soil monoliths were contained in weighable lysimeters and monitored for their water and nitrogen balance in the period between 2012 and 2018. At the water-limited site (Selhausen), annual plant nitrogen uptake decreased due to water stress compared to the energy-limited site (Rollesbroich), while nitrogen uptake was higher at the beginning of the growing period. Possibly because of this lower plant uptake, the lysimeters at the water-limited site showed an increased inorganic nitrogen concentration in the soil solution, indicating a higher net mineralization rate. The N2O gas emissions and nitrogen leaching remained low at both sites. Our findings suggest that in the short term, fertilizer should consequently be applied early in the growing period to increase nitrogen uptake and decrease nitrogen losses. Moreover, a shift from energy-limited to water-limited conditions will have a limited effect on gaseous nitrogen emissions and nitrate concentrations in the groundwater in the grassland type of this study because higher nitrogen concentrations are (over-) compensated by lower leaching rates.

scholarly journals Characteristics of Water Budget Components in Paddy Rice Field under the Asian Monsoon Climate: Application of HSPF-Paddy Model

Water ◽  
2014 ◽  
Vol 6 (7) ◽  
pp. 2041-2055 ◽  
Author(s):  
Young-Jin Kim ◽  
Hae-Do Kim ◽  
Ji-Hong Jeon
Keyword(s):  
Water Budget ◽  
Rice Field ◽  
Asian Monsoon ◽  
Paddy Rice ◽  
Monsoon Climate ◽  
Paddy Rice Field

scholarly journals Tracking the Fate of Fertilizer Nitrogen in a Paddy Rice Field Using Isotope Technology

2019 ◽  
Vol 29 (1) ◽  
pp. 419-428
Author(s):  
Xiangfei Yu ◽  
Yingying Xu ◽  
Hui Zhu ◽  
Brian Shutes ◽  
Baixing Yan ◽  
...  
Keyword(s):  
Rice Field ◽  
Paddy Rice ◽  
Fertilizer Nitrogen ◽  
Paddy Rice Field

Investigation of possible horizontal gene transfer from transgenic rice to soil microorganisms in paddy rice field

2010 ◽  
Vol 20 (1) ◽  
pp. 187-192 ◽  
Author(s):  
Sung Eun Kim ◽  
Jae Sun Moon ◽  
Jung Kyu Kim ◽  
Won Sik Choi ◽  
Sang Han Lee ◽  
...  
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Transgenic Rice ◽  
Soil Microorganisms ◽  
Rice Field ◽  
Paddy Rice ◽  
Paddy Rice Field

Numerical model to predict water temperature distribution in a paddy rice field

2021 ◽  
Vol 245 ◽  
pp. 106553
Author(s):  
Kazuhiro Nishida ◽  
Shuichiro Yoshida ◽  
Sho Shiozawa
Keyword(s):  
Temperature Distribution ◽  
Numerical Model ◽  
Water Temperature ◽  
Rice Field ◽  
Paddy Rice ◽  
Paddy Rice Field

Paddy rice field mapping using GF-1 images with SVM method

2017 ◽  
Author(s):  
Yujie Dou ◽  
Jing Wang ◽  
Peilin Song ◽  
Dongdong Zhang ◽  
Jingfeng Huang ◽  
...  
Keyword(s):  
Rice Field ◽  
Paddy Rice ◽  
Field Mapping ◽  
Paddy Rice Field
Sign in / Sign up

Export Citation Format

Share Document