Yield of irrigated rice affected by asymptomatic disease in a long-term intensive monocropping experiment

Buresh, R. J.; Correa, Teodoro Q.; Pabuayon, Irish Lorraine B.; Laureles, E.V.; Choi, Il-Ryong

doi:10.1016/j.fcr.2021.108121

Cited by 9 publications

(13 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Despite yield potential declines in the DS, the maintenance of yield with high-NF in phase 2 (Fig. 3B) reflects the general effectiveness of agronomic practices to control biotic constraints such as sheath blight and tungro virus disease in the DS crop (18). However, stagnant observed yields and declining yield potential in DS highlight the critical need for accelerating genetic improvements to increase yield in a changing climate, especially in response to declining solar radiation and increasing minimum (night) temperature (SI Appendix, Table S4 and Fig.…”

Section: Discussionmentioning

confidence: 98%

“…S6) and based on simulations tended to increase with time in LWS (SI Appendix, Table S8). (11,17,18). The three cropping seasons per year were the DS (January to April), EWS (May to August), and LWS (September to December).…”

Section: Discussionmentioning

confidence: 99%

“…1 ) to ∼18 to 20 Mg ⋅ ha −1 with optimized planting dates for two rice crops. However, as demonstrated by the LTCCE, triple cropping systems require very careful agronomic management and, if done at larger scale, also good cooperation among farmers to synchronize cropping in order to sustain high levels of productivity ( 18 ). Despite higher annual production with three rather than two rice crops, surveys of farmers in the Mekong Delta of Vietnam have indicated that high costs with triple cropping might adversely affect the economic sustainability of triple versus double rice cropping ( 24 , 25 ).…”

Section: Discussionmentioning

confidence: 99%

“…Considering the importance of the wet season for rice production in Asia, one of the major challenges is to close yield and NUE gaps in this season under a variable and changing climate. Furthermore, the failure of agronomic practices within the 1-ha LTCCE area to prevent tungro infection highlights a need for well-synchronized agronomic practices to control biotic stresses at a larger spatial scale, such as synchronized planting ( 18 , 29 ).…”

Section: Discussionmentioning

confidence: 99%

“…Furthermore, the LTCCE provides avenues for developing hypotheses for system improvements. A number of specific factors affecting rice yields in the LTCCE during 2001 to 2015 have recently been reported ( 18 ). Here, using the LTCCE data for the entire 50-y period, we aim to analyze and understand rice yield trends in two distinct management periods, including comparing the observed trends with the model-simulated climatic-genetic yield potential (referred to as yield potential).…”

mentioning

confidence: 99%

See 4 more Smart Citations

Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping

Ladha

Radanielson

Rutkoski

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

View full text Add to dashboard Cite

Intensive systems with two or three rice (Oryza sativa L.) crops per year account for about 50% of the harvested area for irrigated rice in Asia. Any reduction in productivity or sustainability of these systems has serious implications for global food security. Rice yield trends in the world’s longest-running long-term continuous cropping experiment (LTCCE) were evaluated to investigate consequences of intensive cropping and to draw lessons for sustaining production in Asia. Annual production was sustained at a steady level over the 50-y period in the LTCCE through continuous adjustment of management practices and regular cultivar replacement. Within each of the three annual cropping seasons (dry, early wet, and late wet), yield decline was observed during the first phase, from 1968 to 1990. Agronomic improvements in 1991 to 1995 helped to reverse this yield decline, but yield increases did not continue thereafter from 1996 to 2017. Regular genetic and agronomic improvements were sufficient to maintain yields at steady levels in dry and early wet seasons despite a reduction in the yield potential due to changing climate. Yield declines resumed in the late wet season. Slower growth in genetic gain after the first 20 y was associated with slower breeding cycle advancement as indicated by pedigree depth. Our findings demonstrate that through adjustment of management practices and regular cultivar replacement, it is possible to sustain a high level of annual production in irrigated systems under a changing climate. However, the system was unable to achieve further increases in yield required to keep pace with the growing global rice demand.

show abstract

Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping

Ladha

Radanielson

Rutkoski

et al. 2021

Proc. Natl. Acad. Sci. U.S.A.

Self Cite

View full text Add to dashboard Cite

show abstract

Revisiting yield gaps and the scope for sustainable intensification for irrigated lowland rice in Southeast Asia

Silva¹,

Pede

Radanielson

et al. 2022

Agricultural Systems

View full text Add to dashboard Cite

Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices

Nayak

Silva

Parihar

et al. 2022

Field Crops Research

View full text Add to dashboard Cite

A large database of individual farmer field data (n = 4,107) for rice production in the Northwestern Indo-Gangetic Plains of India was used to decompose rice yield gaps and to investigate the scope to reduce nitrogen (N) inputs without compromising yields. Stochastic frontier analysis was used to disentangle efficiency and resource yield gaps, whereas data on rice yield potential in the region were retrieved from the Global Yield Gap Atlas to estimate the technology yield gap. Rice yield gaps were small (ca. 2.7 t ha − 1, or 20% of potential yield, Yp) and mostly attributed to the technology yield gap (ca. 1.8 t ha − 1, or ca. 15% of Yp). Efficiency and resource yield gaps were negligible (less than 5% of Yp in most districts). Small yield gaps were associated with high input use, particularly irrigation water and N, for which small yield responses were observed. N partial factor productivity (PFP-N) was 45-50 kg grain kg − 1 N for fields with efficient N management and approximately 20% lower for the fields with inefficient N management. Improving PFP-N appears to be best achieved through better matching of N rates to the variety types cultivated and by adjusting the amount of urea applied in the 3 rd split in correspondance with the amount of diammonium-phosphate applied earlier in the season. Future studies should assess the potential to reduce irrigation water without compromising rice yield and to broaden the assessment presented here to other indicators and at the cropping systems level.

show abstract

Yield of irrigated rice affected by asymptomatic disease in a long-term intensive monocropping experiment

Cited by 9 publications

References 34 publications

Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping

Steady agronomic and genetic interventions are essential for sustaining productivity in intensive rice cropping

Revisiting yield gaps and the scope for sustainable intensification for irrigated lowland rice in Southeast Asia

Rice yield gaps and nitrogen-use efficiency in the Northwestern Indo-Gangetic Plains of India: Evidence based insights from heterogeneous farmers’ practices

Contact Info

Product

Resources

About