Abstract
Abstract Tracer studies using 32 P labelled superphosphate and rock phosphate were conducted in microplots in a field experiment on rice‐rice‐greengram cropping system. The trial revealed that in all the rice crops studied, P uptake and P use efficiency were higher in superphosphate treated plots than in rock phosphate applied ones. P uptake was improved with organic manuring through application of green manure or crop residues like long rice stubbles. While superphosphate performed well either with or without organic manuring, rock phosphate performed fairly well only with organic manuring. Fairly good P use efficiency could be obtained in the system when green manuring and rock phosphate application in the first crop was followed by superphosphate and long stubble incorporation in the second crop. Apparent recovery values also showed nearly the same results. But tracer studies were found to be definitely superior in the evaluation of fertilizers.
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Claims 9
Claim · model-written summary
Rice P uptake was higher with superphosphate than with rock phosphate.
- Taxon
- rice
Oryza sativae0 - Treatment
- superphosphatee0
- Outcome
- P uptakee0
- Direction
- highere0
- Comparator
- rock phosphatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in all the rice crops studied, P uptake and P use efficiency were higher in superphosphate treated plots than in rock phosphate applied ones”
Claim · model-written summary
Rice P use efficiency was higher with superphosphate than with rock phosphate.
- Taxon
- riceOryza sativae0
- Treatment
- superphosphatee0
- Outcome
- P use efficiencye0
- Direction
- highere0
- Comparator
- rock phosphatee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in all the rice crops studied, P uptake and P use efficiency were higher in superphosphate treated plots than in rock phosphate applied ones”
Claim · model-written summary
Organic manuring through green manure improved rice P uptake.
- Taxon
- riceOryza sativae1
- Treatment
- green manuree0
- Outcome
- P uptakee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P uptake was improved with organic manuring through application of green manure or crop residues like long rice stubbles”
e1“rice crops”
Claim · model-written summary
Organic manuring through long rice stubbles improved rice P uptake.
- Taxon
- riceOryza sativae0
- Treatment
- long rice stubblese0
- Outcome
- P uptakee0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P uptake was improved with organic manuring through application of green manure or crop residues like long rice stubbles”
Claim · model-written summary
Superphosphate performed well with or without organic manuring.
- Taxon
- riceOryza sativae1
- Treatment
- superphosphatee0
- Outcome
- performed welle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“superphosphate performed well either with or without organic manuring”
e1“rice crops”
Claim · model-written summary
Rock phosphate performed fairly well only with organic manuring.
- Taxon
- riceOryza sativae1
- Treatment
- rock phosphatee0
- Outcome
- performed fairly welle0
- Qualifier
- only with organic manuringe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rock phosphate performed fairly well only with organic manuring”
e1“rice crops”
Claim · model-written summary
Green manuring and rock phosphate in the first crop followed by superphosphate and long stubble incorporation in the second gave fairly good P use efficiency.
- Taxon
- riceOryza sativae1
- Treatment
- green manuring and rock phosphate application in the first crop was followed by superphosphate and long stubble incorporation in the second crope0
- Outcome
- P use efficiencye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fairly good P use efficiency could be obtained in the system when green manuring and rock phosphate application in the first crop was followed by superphosphate and long stubble incorporation in the second crop”
e1“rice‐rice‐greengram cropping system”
Claim · model-written summary
Apparent recovery values showed nearly the same pattern as P use efficiency.
- Taxon
- riceOryza sativae1
- Outcome
- Apparent recovery valuese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Apparent recovery values also showed nearly the same results”
e1“rice crops”
Claim · model-written summary
Tracer studies were superior for fertilizer evaluation.
- Taxon
- riceOryza sativae1
- Outcome
- evaluation of fertilizerse0
- Direction
- superiore0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tracer studies were found to be definitely superior in the evaluation of fertilizers”
e1“rice crops”
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