Abstract
A study was carried out during the 2005 and 2006 growing seasons to evaluate the effect of increasingnitrogen fertilization rates on nitrate accumulation, vitamin C and s-carotene content in two carrot genotypes. Nitrogen fertilizer (calcium ammonium nitrate, 27% N) was applied at four rates: 0, 60, 120 and 180 kgNha-1.After harvesting, root samples were collected and tested for quality. The use of increasing nitrogen ratesresulted in increased nitrate accumulation in the roots. The increase in nitrogen fertilizer rate from 60 to 120 kgNha-1 led to a reduction in Vitamin C content and an increase in s-carotene. Differences were observedbetween cultivars and hybrids in all quality parameters tested. Key words: Carrot, genotypes, nitrogen, nitrates, vitamin C, s-carotene.
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Claims 4
Claim · model-written summary
Increasing nitrogen rates increased nitrate accumulation in carrot roots.
- Taxon
- carrot
Daucus carotat0 - Organ / stage
- rootse1
- Treatment
- increasing nitrogen ratese1
- Outcome
- nitrate accumulatione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“carrot quality”
e1“The use of increasing nitrogen rates resulted in increased nitrate accumulation in the roots”
Claim · model-written summary
Increasing nitrogen fertilizer rate from 60 to 120 kgN ha-1 reduced vitamin C content in carrot.
- Taxon
- carrotDaucus carotat0
- Treatment
- increase in nitrogen fertilizer rate from 60 to 120 kgNha-1e2
- Outcome
- Vitamin C contente2
- Direction
- reductione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“carrot quality”
e2“The increase in nitrogen fertilizer rate from 60 to 120 kgNha-1 led to a reduction in Vitamin C content and an increase in s-carotene”
Claim · model-written summary
Increasing nitrogen fertilizer rate from 60 to 120 kgN ha-1 increased s-carotene in carrot.
- Taxon
- carrotDaucus carotat0
- Treatment
- increase in nitrogen fertilizer rate from 60 to 120 kgNha-1e2
- Outcome
- s-carotenee2
- Direction
- increasee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“carrot quality”
e2“The increase in nitrogen fertilizer rate from 60 to 120 kgNha-1 led to a reduction in Vitamin C content and an increase in s-carotene”
Claim · model-written summary
Carrot cultivars and hybrids differed in all quality parameters tested.
- Taxon
- carrotDaucus carotat0
- Material
- cultivars and hybridse3
- Outcome
- quality parameterse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“carrot quality”
e3“Differences were observedbetween cultivars and hybrids in all quality parameters tested”
The same questions in other papers
nitrogen · nutrient: content · Daucus carota (carrot)Positive and negative results
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- positive
- positive
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1 paper more in this group
See all 5 papers →fertilization · quality: phytochemicals · Daucus carota (carrot)Positive and negative results
12 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.