2021
DOI: 10.1016/j.fcr.2021.108097
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Field-level factors for closing yield gaps in high-yielding rice systems of Uruguay

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Cited by 38 publications
(19 citation statements)
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“…There have been efforts to benchmark rice yield gaps and/or resource-use efficiencies for individual countries or regions 24 27 . In contrast, we are not aware of any global assessment of yield gaps and resource-use efficiencies for rice cropping systems that can serve to prioritize agricultural R&D investments to increase rice production while reducing associated environmental impact.…”
Section: Introductionmentioning
confidence: 99%
“…There have been efforts to benchmark rice yield gaps and/or resource-use efficiencies for individual countries or regions 24 27 . In contrast, we are not aware of any global assessment of yield gaps and resource-use efficiencies for rice cropping systems that can serve to prioritize agricultural R&D investments to increase rice production while reducing associated environmental impact.…”
Section: Introductionmentioning
confidence: 99%
“…This positive change in SOC probably occurred for three reasons: higher rice productivity in the current experiment than in the previous period (9.4 vs. 6.7 Mg ha −1 ), the conversion to no‐till in all experimental rotations compared with the conventional tillage practices previously used, and the inclusion of tall fescue mixed with legumes in the pasture phase, which increases belowground C inputs (discussed below) compared with the annual grass in pastures grown during the previous period. The reason for higher rice productivity is because our experimental management was consistent with optimal practices for closing yield gaps in Uruguay, such as planting date and nitrogen fertilization (Tseng et al., 2021). No‐till also promotes SOC in surface layers.…”
Section: Discussionmentioning
confidence: 86%
“…In some areas, improved pastures provide biologically fixed N to the system, compensating for N exported in grains (Pittelkow et al, 2016;Tseng et al, 2021). However, much of the area has no or very low inclusion of improved pasture species.…”
Section: Scenario Analysismentioning
confidence: 99%
“…In contrast, the particular case of the Uruguayan ricelivestock system could be seen as an example of such a circular farming system, with the whole country's rice area integrated into a systematic pasture-livestock rotational scheme (García et al, 2009;Lanfranco et al, 2018). The system has been operated for four to six decades depending on the region, with a constant yield increase over time of 90 kg ha −1 yr −1 (Blanco et al, 2010) and with relatively low use of N fertilizers (Tseng et al, 2021). In an earlier study (Castillo et al, 2021), we analyzed the system at a national level and found complementarity through N transfer from animal deposition to rice, biological N fixation during the pasture phase, and N recycling in rice bran to livestock.…”
Section: Introductionmentioning
confidence: 99%