Abstract
The effects of different fertilization practices on the carotene content of carrot cv. Nantes Duke Notabene 370 Sv were studied in field experiments in southern Finland. Unirrigated and irrigated placement and broadcast fertilization, NPK fertirrigations without basic fertilization, NPK fertirrigations with NPK basic fertilization, and PK placement with N fertirrigations were compared. Further, single application was compared to split applications. Carotene determinations were done at harvest in 1985 and 66, 88 and 121 (at harvest) days from sowing in 1986. The results were studied by contrast analysis. Weather conditions had a strong effect on the carotene content and in both years the carotene content increased with the length of the growing season. At harvest in 1985, PK placement with N fertirrigations had a tendency to yield a higher carotene content than did broadcast fertilization, irrigated single application, and NPK fertirrigations. The carotene content was higher when P and K were placement fertilized as compared to treatments where P and K were broadcast fertilized or fertirrigated (p = 0.1). At the first sampling date in 1986, fertilization increased the carotene content (p = 0.1). PK placement with N fertirrigations had a tendency to increase the carotene content as compared to placement fertilization, single application and irrigated single application. At the second sampling date and at harvest in 1986 no statistically significant differences could be found. The results indicate that the placement of PK-fertilizer or NPK-fertilizer was favourable to carotene production. Besides the fertilization experiment, samples from two organically cultivated fields were collected to obtain data concerning organically cultivated carrots.
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Claims 6
Claim · model-written summary
Carrot carotene content increased with growing season length in both years.
- Taxon
- carrot
Daucus carotat0 - Organ / stage
- growing seasone0
- Outcome
- carotene contente0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in both years the carotene content increased with the length of the growing season”
t0“carrot”
Claim · model-written summary
In 1985, PK placement with N fertirrigation tended to produce higher carotene than broadcast fertilization, irrigated single application and NPK fertirrigation.
- Taxon
- carrotDaucus carotat0
- Treatment
- PK placement with N fertirrigationse0
- Outcome
- carotene contente0
- Direction
- highere0
- Qualifier
- At harvest in 1985e0
- Comparator
- broadcast fertilization, irrigated single application, and NPK fertirrigationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At harvest in 1985, PK placement with N fertirrigations had a tendency to yield a higher carotene content than did broadcast fertilization, irrigated single application, and NPK fertirrigations.”
t0“carrot”
Claim · model-written summary
Placed phosphorus and potassium gave higher carrot carotene than broadcast or fertigated phosphorus and potassium.
- Taxon
- carrotDaucus carotat0
- Treatment
- P and K were placement fertilizede0
- Outcome
- carotene contente0
- Direction
- highere0
- Qualifier
- p = 0.1e0
- Comparator
- P and K were broadcast fertilized or fertirrigatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The carotene content was higher when P and K were placement fertilized as compared to treatments where P and K were broadcast fertilized or fertirrigated (p = 0.1).”
t0“carrot”
Claim · model-written summary
Fertilization increased carrot carotene at the first sampling date in 1986.
- Taxon
- carrotDaucus carotat0
- Treatment
- fertilizatione0
- Outcome
- carotene contente0
- Direction
- increasede0
- Qualifier
- p = 0.1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the first sampling date in 1986, fertilization increased the carotene content (p = 0.1).”
t0“carrot”
Claim · model-written summary
PK placement with nitrogen fertirrigation tended to increase carotene relative to placement and single-application treatments.
- Taxon
- carrotDaucus carotat0
- Treatment
- PK placement with N fertirrigationse0
- Outcome
- carotene contente0
- Direction
- increasee0
- Comparator
- placement fertilization, single application and irrigated single applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PK placement with N fertirrigations had a tendency to increase the carotene content as compared to placement fertilization, single application and irrigated single application.”
t0“carrot”
Claim · model-written summary
No statistically significant treatment differences in carotene were found at the second sampling date or harvest in 1986.
- Taxon
- carrotDaucus carotat0
- Outcome
- statistically significant differencese0
- Qualifier
- At the second sampling date and at harvest in 1986e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At the second sampling date and at harvest in 1986 no statistically significant differences could be found.”
t0“carrot”
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