Abstract
Field and demonstration experiments were combined to study effects of coated urea on yield,quality and economic returns of tomato. 20% of coated urea was mixed with seedling substrate and the other 80% was banded preplant application( the N application rate of coated urea was 50% of conventional N rate). The results showed that the seedling strength index of coated urea with contact application was 47. 9% higher than that of the conventional seedling. Compared to the urea with basal application and 3 topdressings,the tomato yield with coated urea increased by 9. 7% and 5. 1%,respectively,and the nitrogen use efficiency( NUE) increased by 9. 0-10. 2 percentage point. Tomato quality with coated urea was improved compared to the urea,in which the soluble sugar content increased by 6. 5%- 9. 4% and Vitamin C content increased by 10%- 11. 3%. Economic returns of tomato with the coated urea increased by 33. 8% compared to the conventional N application,though N input of the former was reduced by RMB 44 yuan per hectare. Nitrate dynamics of surface soil layer( 0-20 cm) with the coated urea cut a peak to fill valley in comparison to regular urea,consequently the risk of nitrate leaching was dramatically reduced.
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Claims 10
Claim · model-written summary
Coated urea increased tomato seedling strength index by 47. 9% relative to conventional seedlings.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- coated urea with contact applicatione0
- Outcome
- seedling strength indexe0
- Direction
- highere0
- Value
- 47. 9%e0
- Comparator
- conventional seedlinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the seedling strength index of coated urea with contact application was 47. 9% higher than that of the conventional seedling”
t0“tomato”
Claim · model-written summary
Coated urea increased tomato yield by 9. 7% relative to basal urea.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- coated ureae0
- Outcome
- tomato yielde0
- Direction
- increasede0
- Value
- 9. 7%e0
- Comparator
- urea with basal applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the urea with basal application and 3 topdressings,the tomato yield with coated urea increased by 9. 7% and 5. 1%,respectively”
Claim · model-written summary
Coated urea increased tomato yield by 5. 1% relative to three topdressings.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- coated ureae0
- Outcome
- tomato yielde0
- Direction
- increasede0
- Value
- 5. 1%e0
- Comparator
- 3 topdressingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to the urea with basal application and 3 topdressings,the tomato yield with coated urea increased by 9. 7% and 5. 1%,respectively”
Claim · model-written summary
Coated urea increased tomato nitrogen use efficiency by 9. 0-10. 2 percentage point.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- coated ureat0
- Outcome
- nitrogen use efficiencye0
- Direction
- increasede0
- Value
- 9. 0-10. 2 percentage pointe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nitrogen use efficiency( NUE) increased by 9. 0-10. 2 percentage point”
t0“coated urea on yield,quality and economic returns of greenhouse tomato”
Claim · model-written summary
Coated urea increased tomato soluble sugar content by 6. 5%- 9. 4%.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- coated ureae0
- Outcome
- soluble sugar contente0
- Direction
- increasede0
- Value
- 6. 5%- 9. 4%e0
- Comparator
- ureae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato quality with coated urea was improved compared to the urea,in which the soluble sugar content increased by 6. 5%- 9. 4% and Vitamin C content increased by 10%- 11. 3%”
Claim · model-written summary
Coated urea increased tomato Vitamin C content by 10%- 11. 3%.
- Taxon
- TomatoSolanum lycopersicume0
- Treatment
- coated ureae0
- Outcome
- Vitamin C contente0
- Direction
- increasede0
- Value
- 10%- 11. 3%e0
- Comparator
- ureae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tomato quality with coated urea was improved compared to the urea,in which the soluble sugar content increased by 6. 5%- 9. 4% and Vitamin C content increased by 10%- 11. 3%”
Claim · model-written summary
Coated urea increased tomato economic returns by 33. 8%.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- coated ureae0
- Outcome
- Economic returnse0
- Direction
- increasede0
- Value
- 33. 8%e0
- Comparator
- conventional N applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Economic returns of tomato with the coated urea increased by 33. 8% compared to the conventional N application”
Claim · model-written summary
Coated urea reduced nitrogen input by RMB 44 yuan per hectare.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- coated ureat0
- Outcome
- N inpute0
- Direction
- reducede0
- Value
- RMB 44 yuan per hectaree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N input of the former was reduced by RMB 44 yuan per hectare”
t0“coated urea on yield,quality and economic returns of greenhouse tomato”
Claim · model-written summary
Coated urea flattened surface-soil nitrate dynamics relative to regular urea.
- Treatment
- coated ureae0
- Outcome
- Nitrate dynamicse0
- Direction
- cut a peak to fill valleye0
- Comparator
- regular ureae0
Not reportedTaxonOrgan / stage
Verbatim
e0“Nitrate dynamics of surface soil layer( 0-20 cm) with the coated urea cut a peak to fill valley in comparison to regular urea”
Claim · model-written summary
Coated urea dramatically reduced nitrate leaching risk.
Not reportedTaxonComparator
Verbatim
e0“the risk of nitrate leaching was dramatically reduced”
t0“coated urea on yield,quality and economic returns of greenhouse tomato”
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