Abstract
Nitrogen (N) and potassium (K) are important yield‐contributing nutrients for sustainable rice production. However, there is not much information in Bangladesh on the co‐application of N and K and how they interact to affect rice yield and nutrition. Field experiments with the combined application of five K rates (0, 50, 100, 150, and 200 kg ha ‒1 ) and four N rates (0, 50, 75, and 100 kg ha ‒1 ) were conducted to investigate their interaction effect on rice yield, nutrient uptake, and nitrogen use efficiency (NUE). The biomass yield of rice in maximum tillering (MT) and heading stages was significantly ( p < 0.05) higher in the combination of 75 kg N and 100 kg K ha ‒1 . Similarly, the co‐application of N and K yielded significantly ( p < 0.05) higher grain and straw in 75 kg N and 100 kg K ha ‒1 combination. Likewise, nitrogen, phosphorus, sulfur, and zinc uptake at MT, heading, and maturity stages were higher in the 100 kg N and 100 kg K ha ‒1 combination. Potassium uptake increased with the increasing K rates due to luxurious consumption. Higher K uptake was recorded at all growth stages in the 100 kg N and 200 kg K ha ‒1 combination, which was statistically similar to that of the combination of 100 kg N and 150 kg K ha ‒1 . However, higher agronomic efficiency of N was observed in the combination of 50 kg N and 100 kg K ha ‒1 . These results imply that optimum rice yield and NUE can be achieved in clay loam soils by applying 100 kg K and 75 kg N ha −1 .
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Claims 9
Claim · model-written summary
The 75 kg N and 100 kg K combination produced significantly higher biomass at maximum tillering and heading.
- Taxon
- Rice
Oryza sativat0 - Treatment
- 75 kg N and 100 kg K ha ‒1e0
- Outcome
- biomass yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The biomass yield of rice in maximum tillering (MT) and heading stages was significantly ( p < 0.05) higher in the combination of 75 kg N and 100 kg K ha ‒1 .”
t0“Optimizing Rice Yield”
Claim · model-written summary
The 75 kg N and 100 kg K combination produced significantly higher grain and straw yields.
- Taxon
- RiceOryza sativat0
- Treatment
- 75 kg N and 100 kg K ha ‒1e0
- Outcome
- grain and strawe0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the co‐application of N and K yielded significantly ( p < 0.05) higher grain and straw in 75 kg N and 100 kg K ha ‒1 combination.”
t0“Optimizing Rice Yield”
Claim · model-written summary
The 100 kg N and 100 kg K combination increased nitrogen, phosphorus and sulfur uptake.
- Taxon
- RiceOryza sativat0
- Treatment
- 100 kg N and 100 kg K ha ‒1e0
- Outcome
- nitrogen, phosphorus, sulfure0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen, phosphorus, sulfur, and zinc uptake at MT, heading, and maturity stages were higher in the 100 kg N and 100 kg K ha ‒1 combination.”
t0“Optimizing Rice Yield”
Claim · model-written summary
The 100 kg N and 100 kg K combination increased zinc uptake.
- Taxon
- RiceOryza sativat0
- Treatment
- 100 kg N and 100 kg K ha ‒1e0
- Outcome
- zinc uptakee0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen, phosphorus, sulfur, and zinc uptake at MT, heading, and maturity stages were higher in the 100 kg N and 100 kg K ha ‒1 combination.”
t0“Optimizing Rice Yield”
Claim · model-written summary
Potassium uptake increased with potassium rate.
- Taxon
- RiceOryza sativat0
- Treatment
- increasing K ratese0
- Outcome
- Potassium uptakee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potassium uptake increased with the increasing K rates due to luxurious consumption.”
t0“Optimizing Rice Yield”
Claim · model-written summary
The 100 kg N and 200 kg K combination gave higher potassium uptake at all growth stages.
- Taxon
- RiceOryza sativat0
- Treatment
- 100 kg N and 200 kg K ha ‒1e0
- Outcome
- K uptakee0
- Direction
- Highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher K uptake was recorded at all growth stages in the 100 kg N and 200 kg K ha ‒1 combination, which was statistically similar to that of the combination of 100 kg N and 150 kg K ha ‒1 .”
t0“Optimizing Rice Yield”
Claim · model-written summary
Potassium uptake under 100 kg N and 200 kg K was statistically similar to 100 kg N and 150 kg K.
- Taxon
- RiceOryza sativat0
- Treatment
- 100 kg N and 200 kg K ha ‒1e0
- Outcome
- K uptakee0
- Direction
- statistically similare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Higher K uptake was recorded at all growth stages in the 100 kg N and 200 kg K ha ‒1 combination, which was statistically similar to that of the combination of 100 kg N and 150 kg K ha ‒1 .”
t0“Optimizing Rice Yield”
Claim · model-written summary
The 50 kg N and 100 kg K combination produced higher agronomic nitrogen efficiency.
- Taxon
- RiceOryza sativat0
- Treatment
- 50 kg N and 100 kg K ha ‒1e0
- Outcome
- agronomic efficiency of Ne0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“higher agronomic efficiency of N was observed in the combination of 50 kg N and 100 kg K ha ‒1 .”
t0“Optimizing Rice Yield”
Claim · model-written summary
The authors recommend 100 kg K and 75 kg N per hectare for optimum rice yield and nitrogen use efficiency in clay loam soils.
- Taxon
- RiceOryza sativat0
- Treatment
- 100 kg K and 75 kg N ha −1e0
- Outcome
- rice yield and NUEe0
- Setting
- clay loam soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“optimum rice yield and NUE can be achieved in clay loam soils by applying 100 kg K and 75 kg N ha −1”
t0“Optimizing Rice Yield”
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