Abstract
Organic production is one of the fastest growing food sectors globally. However, average yield in organic vegetable production is up to 33% lower than in conventional production. This difference could be due to higher fertilization rates in conventional, compared to organic, farming. We aimed to compare yield and quality characteristics of carrots produced under equal nitrogen fertilization rates over four years in organic and conventional conditions. We found a 14.5% higher marketable, and 10.0% lower discarded, yield in the organic compared to the average conventional treatments. In addition, carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally. There were no convincing effects of cultivation system on the nitrogen, total sugar, or dry matter content of carrots. Organically managed carrots were free of pesticide residues, while several residues were found in carrots managed conventionally. Our study reveals that organic management of carrots may exceed that of conventional methods in yield and several quality characteristics, while being free of pesticide residues. Organic fertilizer gave an advantage over mineral fertilizer, when equal rates of nitrogen were used in both production systems.
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Claims 7
Claim · model-written summary
Organic carrots had 14.5% higher marketable yield.
- Taxon
- carrots
Daucus carotae1 - Treatment
- organice0
- Outcome
- marketablee0
- Direction
- highere0
- Value
- 14.5%e0
- Comparator
- average conventional treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We found a 14.5% higher marketable, and 10.0% lower discarded, yield in the organic compared to the average conventional treatments”
t0“Carrot”
e1“carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally”
Claim · model-written summary
Organic carrots had 10.0% lower discarded yield.
- Taxon
- carrotsDaucus carotae1
- Treatment
- organice0
- Outcome
- discarded, yielde0
- Direction
- lowere0
- Value
- 10.0%e0
- Comparator
- average conventional treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We found a 14.5% higher marketable, and 10.0% lower discarded, yield in the organic compared to the average conventional treatments”
t0“Carrot”
e1“carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally”
Claim · model-written summary
Organic carrots had 14.1% lower nitrate.
- Taxon
- carrotsDaucus carotae0
- Treatment
- managed organicallye0
- Outcome
- nitratee0
- Direction
- lowere0
- Value
- 14.1%e0
- Comparator
- carrots managed conventionallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally”
Claim · model-written summary
Organic carrots had 10.0% higher vitamin C.
- Taxon
- carrotsDaucus carotae0
- Treatment
- managed organicallye0
- Outcome
- vitamin C contente0
- Direction
- highere0
- Value
- 10.0%e0
- Comparator
- carrots managed conventionallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally”
Claim · model-written summary
Cultivation system showed no convincing effects on nitrogen, sugar or dry matter.
- Taxon
- carrotsDaucus carotae0
- Treatment
- cultivation systeme0
- Outcome
- nitrogen, total sugar, or dry matter contente0
- Direction
- no convincing effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no convincing effects of cultivation system on the nitrogen, total sugar, or dry matter content of carrots”
Claim · model-written summary
Organic carrots lacked pesticide residues.
- Taxon
- carrotsDaucus carotae0
- Treatment
- Organically managede0
- Outcome
- free of pesticide residuese0
- Comparator
- carrots managed conventionallye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organically managed carrots were free of pesticide residues, while several residues were found in carrots managed conventionally”
Claim · model-written summary
Organic fertilizer outperformed mineral fertilizer at equal nitrogen rates.
- Taxon
- CarrotDaucus carotat0
- Treatment
- Organic fertilizere0
- Outcome
- advantagee0
- Direction
- advantagee0
- Comparator
- mineral fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Organic fertilizer gave an advantage over mineral fertilizer, when equal rates of nitrogen were used in both production systems”
t0“Carrot”
e1“carrots managed organically had 14.1% lower nitrate and 10.0% higher vitamin C content than carrots managed conventionally”
The same questions in other papers
cultivation system · yield · Daucus carota (carrot)Positive and negative results
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- negative
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1 paper more in this group
See all 5 papers →cultivation system · quality: postharvest · Daucus carota (carrot)Results agree
1 paper in the same direction as this paper
- positive
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.