Abstract
Kharif rice is a major crop in South Odisha, characterized by coarse-textured, nutrient-deficient soils. Balanced fertilizer applications are essential to enhance yield and nutrient use efficiency in this region. Given high soil responsiveness to fertilizers, revising the current fertilizer recommendations is critical to achieving sustainable yield improvements aligned with national productivity standards. Therefore, the present study was carried out at the Post Graduate Research Farm, M.S. Swaminathan School of Agriculture, Odisha, during the kharif 2024. The experiment was conducted in a randomized block design with three replications and nine treatments, ranging from 0% to 200% of the recommended fertilizer dose (RDF) in incremental steps of 25%, with corresponding NPK levels. Half of the nitrogen and all phosphorus and potassium were applied as basal, with the remaining nitrogen split between 30 and 49 DAT. Data were recorded at 30, 60, 90 DAT and harvest. Grain, straw, and post-harvest soil samples were collected for laboratory analysis. The result revealed that the application of 150% RDF recorded the highest grain yield (5.6 t/ha), grain nutrient content (N-1.21%, P-0.30%, K-1.55%), grain nutrient uptake (N: 68.3, P: 16.9, and K: 87.1 kg/ha), nutrient balance, nutrient use efficiency like agronomic efficiency (N-23.6, P-47.2 and K-47.2 kg/kg) and apparent recovery efficiency (N-61.4, P-41.2 and K-311.2 kg/kg), offers a more productive and profitable alternative option to the current 100% RDF recommendation, supporting sustainable agriculture for farmers in Gajapati district.
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Claims 15
Claim · model-written summary
150% RDF gave the highest rice grain yield of 5.6 t/ha.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the application of 150% RDF recorded the highest grain yield (5.6 t/ha)”
t0“rice”
Claim · model-written summary
At 150% RDF, rice grain N was 1.21%.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain nutrient content (N-1.21%, P-0.30%, K-1.55%)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, rice grain P was 0.30%.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain nutrient content (N-1.21%, P-0.30%, K-1.55%)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, rice grain K was 1.55%.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain nutrient content (N-1.21%, P-0.30%, K-1.55%)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, grain N uptake was 68.3 kg/ha.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain nutrient uptake (N: 68.3, P: 16.9, and K: 87.1 kg/ha)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, grain P uptake was 16.9 kg/ha.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain nutrient uptake (N: 68.3, P: 16.9, and K: 87.1 kg/ha)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, grain K uptake was 87.1 kg/ha kg/ha.
- Taxon
- rice
Oryza sativat0 - Treatment
- 150% RDFe1
- Compound
- Ke0
- Outcome
- grain nutrient uptakee0
- Value
- 87.1 kg/hae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“grain nutrient uptake (N: 68.3, P: 16.9, and K: 87.1 kg/ha)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, nutrient balance was highest.
- Taxon
- riceOryza sativat0
- Treatment
- 150% RDFe1
- Outcome
- nutrient balancee0
- Direction
- higheste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nutrient balance”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, N agronomic efficiency was 23.6.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic efficiency (N-23.6, P-47.2 and K-47.2 kg/kg)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, P agronomic efficiency was 47.2.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic efficiency (N-23.6, P-47.2 and K-47.2 kg/kg)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, K agronomic efficiency was 47.2 kg/kg.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“agronomic efficiency (N-23.6, P-47.2 and K-47.2 kg/kg)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, N apparent recovery efficiency was 61.4.
- Taxon
- riceOryza sativat0
- Treatment
- 150% RDFe1
- Compound
- Ne0
- Outcome
- apparent recovery efficiencye0
- Value
- 61.4e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apparent recovery efficiency (N-61.4, P-41.2 and K-311.2 kg/kg)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, P apparent recovery efficiency was 41.2.
- Taxon
- riceOryza sativat0
- Treatment
- 150% RDFe1
- Compound
- Pe0
- Outcome
- apparent recovery efficiencye0
- Value
- 41.2e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apparent recovery efficiency (N-61.4, P-41.2 and K-311.2 kg/kg)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
At 150% RDF, K apparent recovery efficiency was 311.2 kg/kg.
- Taxon
- riceOryza sativat0
- Treatment
- 150% RDFe1
- Compound
- Ke0
- Outcome
- apparent recovery efficiencye0
- Value
- 311.2 kg/kge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“apparent recovery efficiency (N-61.4, P-41.2 and K-311.2 kg/kg)”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
Claim · model-written summary
150% RDF was proposed as a more productive and profitable alternative to 100% RDF.
- Taxon
- riceOryza sativat0
- Outcome
- 150% RDFe1
- Comparator
- current 100% RDF recommendatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“offers a more productive and profitable alternative option to the current 100% RDF recommendation”
e1“the application of 150% RDF recorded the highest grain yield”
t0“rice”
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