The interactions between nitrogen (N) and potassium (K)
Research gap analysis derived from 6 agriculture papers in our local library.
The gap
Abstract The interactions between nitrogen (N) and potassium (K) are important determinants of rice yield, but the mechanisms involved remain poorly understood.
Evidence profile
Sourced from the abstract and stated research gap and future-work section of the source papers, classified as general, drawn from work published between 2021 and 2026, spanning 5 journals. Those papers have been cited 33 times in total.
Research trend
Established — well-defined area with open sub-problems.
Supporting evidence — 8 representative gaps
- Enhancing the yield, quality, and potassium use efficiency of direct-seeded hybrid indica rice through wheat-straw returning combined with potassium fertilizer application (2026) · Frontiers in Plant Science · doi
However, in rice–wheat rotation systems, the synergistic effects of wheat-straw returning and optimized K fertilization on yield, rice quality, and KUE of direct-seeded rice remain poorly understood.
generalabstractevidence 5/5Keywords: rice wheat rotation systems synergistic effects straw returning optimized fertilization yield quality direct seeded remain - Effects of nitrogen application frequency under integrated water and fertiliser management on soil physicochemical properties, dry matter accumulation, photosynthetic characteristics and yield (2026) · Scientific Reports · doi
However, the specific mechanisms by which the frequency of split nitrogen fertilizer applications influences cotton yield and NRE under water-fertilizer integration conditions remain poorly understood.
generalabstractevidence 5/5Keywords: fertilizer specific mechanisms frequency split nitrogen applications influences cotton yield water integration conditions remain poorly - Soil Fertility Dominates the Optimal Allocation of Basal and Tillering Nitrogen in Rice Production (2026) · Agronomy · doi
Excessive basal and tillering nitrogen (BTN) application in rice production causes substantial N losses and environmental costs, yet practical soil fertility thresholds to guide safe BTN reduction (RBTN) have not been established.
generalabstractevidence 5/5Keywords: excessive basal tillering nitrogen application rice production causes substantial losses environmental costs practical soil fertility - Effects of a one‐time application of controlled‐release nitrogen fertilizer on quality and yield of rice (2022) · Food and Energy Security · cited 10× · doi
Abstract Limited information is available on the influence of a one‐time application of controlled‐release nitrogen fertilizer (CRNF) in improving both yield and quality of rice.
generalabstractevidence 5/5Keywords: abstract limited information available influence time application controlled release nitrogen fertilizer crnf improving yield quality - Nitrogen application timing drives stage-specific rhizosphere ecological clusters that regulate the yield-quality trade-off in hybrid rice (2026) · Biology and Fertility of Soils · doi
The effects of nitrogen-splitting regimes on rice yield and grain quality are not well understood. The relationships between nitrogen application timing, rhizosphere ecological clusters, and yield-quality trade-offs are not well understood.
generalstated research gapevidence 5/5Keywords: effects nitrogen-splitting regimes rice yield grain quality well - Nitrogen application timing drives stage-specific rhizosphere ecological clusters that regulate the yield-quality trade-off in hybrid rice (2026) · Biology and Fertility of Soils · doi
Further research is needed to understand the mechanisms underlying the effects of nitrogen-splitting regimes on rice yield and grain quality. Further research is needed to develop more efficient and sustainable nitrogen fertilization strategies in intensive rice production systems.
generalfuture-work sectionevidence 3/5Keywords: further research needed understand mechanisms underlying effects nitrogen-splitting - Nitrogen application timing drives stage-specific rhizosphere ecological clusters that regulate the yield-quality trade-off in hybrid rice (2026) · Biology and Fertility of Soils · doi
However, how N-splitting regimes influence the trade-off between hybrid rice yield and quality, and the underlying rhizosphere microbial mechanisms, remain poorly understood.
generalabstractevidence 2/5Keywords: splitting regimes influence trade hybrid rice yield quality underlying rhizosphere microbial mechanisms remain poorly understood - Nitrogen/potassium interactions increase rice yield by improving canopy performance (2021) · Food and Energy Security · cited 23× · doi
Abstract The interactions between nitrogen (N) and potassium (K) are important determinants of rice yield, but the mechanisms involved remain poorly understood.
generalabstractevidence 2/5Keywords: abstract interactions nitrogen potassium important determinants rice yield mechanisms involved remain poorly understood
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