Mitigation of environmental N pollution and greenhouse gas emission from double rice cropping system with a new alternate wetting and drying irrigation regime coupled with optimized N fertilization in South China

Effect of Alternate Wetting and Drying on the Emission of Greenhouse Gases from Rice Fields on the Northern Coast of Peru

“…This increase can also be explained by microbial degradation, root exudate release, and microbial biomass growth during the maximum tillering phase [14]. These results are consistent with previous research [10,12,16].…”

“…In Figure 7, it can be observed that the highest emission rates were under the CF regimen. Although these emission rates are comparable to those recorded in other locations (Table 5) [3,5,14,16], there are studies reporting higher [2,12,19] or lower values [6,10].…”

“…However, this reduction is offset by an increase in N 2 O emissions in terms of GWP [11,12]. For example, Islam et al [5] reported a 46% increase in cumulative seasonal N 2 O emissions.…”

“…For example, Islam et al [5] reported a 46% increase in cumulative seasonal N 2 O emissions. Additionally, some studies claim that alternating between aerobic and anaerobic periods increases N 2 O emissions through nitrification and denitrification processes, respectively [12][13][14][15].…”

“…Meanwhile, Sha et al [16] conducted their studies under the AWD regimen in a temperate monsoonal continental climate with an average annual temperature of 8 • C and average precipitation of 716 mm over a 3-year period. Another influencing factor is the drying depth threshold, as rice crop roots need to extract water for optimal yield and to avoid plant stress [12]. Therefore, it is important to generate information on greenhouse gas emissions in rice cultivation in different agroecological zones and irrigation management practices.…”