scholarly journals Effects of zinc on growth and yield of rice cv. BRRI dhan29 under alternate wetting and drying water management practice

2021 ◽  
Vol 02 (03) ◽  
pp. 25-30
Author(s):  
S. Farzana ◽  
A. Sarkar ◽  
M. Hosenuzzaman ◽  
M. A.A. Galib ◽  
M. A. Hoque
Keyword(s):  
Water Management ◽  
Management Practice ◽  
Growth And Yield ◽  
Wetting And Drying ◽  
Alternate Wetting And Drying ◽  
Water Management Practice

scholarly journals Assessing Framing of Uncertainties in Water Management Practice

2009 ◽  
Vol 23 (15) ◽  
pp. 3191-3205 ◽  
Author(s):  
Nicola Isendahl ◽  
Art Dewulf ◽  
Marcela Brugnach ◽  
Greet François ◽  
Sabine Möllenkamp ◽  
...  
Keyword(s):  
Water Management ◽  
Management Practice ◽  
Water Management Practice

scholarly journals Learning from Collaborative Research in Water Management Practice

2012 ◽  
Vol 26 (11) ◽  
pp. 3251-3266 ◽  
Author(s):  
G. T. Raadgever ◽  
E. Mostert ◽  
N. C. van de Giesen
Keyword(s):  
Water Management ◽  
Collaborative Research ◽  
Management Practice ◽  
Water Management Practice

Long-term residue and water management practice effects on particulate organic matter in a loessial soil in eastern Arkansas, USA

Geoderma ◽  
2019 ◽  
Vol 337 ◽  
pp. 792-804 ◽  
Author(s):  
Johan Desrochers ◽  
Kristofor R. Brye ◽  
Edward Gbur ◽  
Erik D. Pollock ◽  
Mary C. Savin
Keyword(s):  
Water Management ◽  
Organic Matter ◽  
Particulate Organic Matter ◽  
Management Practice ◽  
Practice Effects ◽  
Loessial Soil ◽  
Water Management Practice

scholarly journals Early season N<sub>2</sub>O emissions under variable water management in rice systems: source-partitioning emissions using isotope ratios along a depth profile

2019 ◽  
Vol 16 (2) ◽  
pp. 383-408 ◽  
Author(s):  
Elizabeth Verhoeven ◽  
Matti Barthel ◽  
Longfei Yu ◽  
Luisella Celi ◽  
Daniel Said-Pullicino ◽  
...  
Keyword(s):  
Water Management ◽  
Isotope Ratio ◽  
Isotope Ratios ◽  
Site Preference ◽  
N2o Emissions ◽  
Mixing Models ◽  
N2o Reduction ◽  
Wetting And Drying ◽  
Soil Redox Potential ◽  
Alternate Wetting And Drying

Abstract. Soil moisture strongly affects the balance between nitrification, denitrification and N2O reduction and therefore the nitrogen (N) efficiency and N losses in agricultural systems. In rice systems, there is a need to improve alternative water management practices, which are designed to save water and reduce methane emissions but may increase N2O and decrease nitrogen use efficiency. In a field experiment with three water management treatments, we measured N2O isotope ratios of emitted and pore air N2O (δ15N, δ18O and site preference, SP) over the course of 6 weeks in the early rice growing season. Isotope ratio measurements were coupled with simultaneous measurements of pore water NO3-, NH4+, dissolved organic carbon (DOC), water-filled pore space (WFPS) and soil redox potential (Eh) at three soil depths. We then used the relationship between SP × δ18O-N2O and SP × δ15N-N2O in simple two end-member mixing models to evaluate the contribution of nitrification, denitrification and fungal denitrification to total N2O emissions and to estimate N2O reduction rates. N2O emissions were higher in a dry-seeded + alternate wetting and drying (DS-AWD) treatment relative to water-seeded + alternate wetting and drying (WS-AWD) and water-seeded + conventional flooding (WS-FLD) treatments. In the DS-AWD treatment the highest emissions were associated with a high contribution from denitrification and a decrease in N2O reduction, while in the WS treatments, the highest emissions occurred when contributions from denitrification/nitrifier denitrification and nitrification/fungal denitrification were more equal. Modeled denitrification rates appeared to be tightly linked to nitrification and NO3- availability in all treatments; thus, water management affected the rate of denitrification and N2O reduction by controlling the substrate availability for each process (NO3- and N2O), likely through changes in mineralization and nitrification rates. Our model estimates of mean N2O reduction rates match well those observed in 15N fertilizer labeling studies in rice systems and show promise for the use of dual isotope ratio mixing models to estimate N2 losses.

Using framing parameters to improve handling of uncertainties in water management practice

2010 ◽  
Vol 20 (2) ◽  
pp. 107-122 ◽  
Author(s):  
Nicola Isendahl ◽  
Claudia Pahl-Wostl ◽  
Art Dewulf
Keyword(s):  
Water Management ◽  
Management Practice ◽  
Water Management Practice

scholarly journals The seven rules for hydrologists and other researchers wanting to contribute to the water management practice

2008 ◽  
Vol 5 (2) ◽  
pp. 843-864
Author(s):  
E. Mostert ◽  
G. T. Raadgever
Keyword(s):  
Water Management ◽  
Science And Technology Studies ◽  
Research Utilization ◽  
Management Practice ◽  
Science And Technology ◽  
The Other ◽  
Technology Studies ◽  
Water Management Practice ◽  
Specific Expertise ◽  
Made In

Abstract. This paper addresses the question how hydrologists and other researchers can best contribute to the water management practice. It reviews the literature in the field of science and technology studies and research utilization and presents the results in the form of seven "rules" for researchers. These are (1) Reflect on the nature and possible roles of research; (2) Analyse the stakeholders and issues at stake; (3) Choose whom and what to serve; (4) Decide on your strategy; (5) Design the process to implement your strategy; (6) Communicate!; and (7) Consider your possibilities and limitations. Key notions in this paper are that research always involves selection and interpretation and that the selection and interpretations made in a specific case always reflect the values and preferences of those involved. Collaboration between the researchers and the other stakeholders can increase the legitimacy and utilization of the research and can prevent that the specific expertise of the researchers is lost.

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