Abstract
ABSTRACT The results of several years of study in Sweden on intercropping in carrots as a method for reducing damage caused by carrot fly, Psila rosae, are evaluated. Lucerne, Medicago littoralis, was used as a living mulch intercrop. The yield decrease due to competition from the intercrop was quantified and weighed against the benefits of the intercrop in terms of reduced damage caused by the carrot fly, soil nitrogen enhancement through N-fixation, and decreased weed germination and development. The negative effects of competition were less pronounced in years with a high carrot fly population. In years when yield losses caused by the fly were low, the competition effect remained. Cultural methods for decreasing competition are discussed.
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Claims 6
Claim · model-written summary
Lucerne living mulch reduced carrot fly damage.
- Taxon
- Carrots
Daucus carotat0 - Treatment
- Lucerne, Medicago littoralise0
- Interactor
- carrot fly
Chamaepsila rosaee0pest - Outcome
- damage caused by the carrot flye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lucerne, Medicago littoralis, was used as a living mulch intercrop. The yield decrease due to competition from the intercrop was quantified and weighed against the benefits of the intercrop in terms of reduced damage caused by the carrot fly”
t0“Carrots”
Claim · model-written summary
Intercrop competition decreased carrot yield.
- Taxon
- CarrotsDaucus carotat0
- Treatment
- intercrope0
- Outcome
- yielde0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield decrease due to competition from the intercrop”
t0“Carrots”
Claim · model-written summary
Lucerne intercrop enhanced soil nitrogen through fixation.
- Taxon
- CarrotsDaucus carotat0
- Outcome
- soil nitrogen enhancemente0
- Direction
- enhancemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil nitrogen enhancement through N-fixation”
t0“Carrots”
Claim · model-written summary
Intercropping decreased weed germination and development.
- Taxon
- CarrotsDaucus carotat0
- Treatment
- Lucerne, Medicago littoralise1
- Interactor
- weede0weed
- Outcome
- weed germination and developmente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased weed germination and development”
t0“Carrots”
e1“Lucerne, Medicago littoralis, was used as a living mulch intercrop.”
Claim · model-written summary
Competition effects were less pronounced when carrot fly populations were high.
- Taxon
- CarrotsDaucus carotat0
- Interactor
- carrot flyChamaepsila rosaee0pest
- Outcome
- negative effects of competitione0
- Direction
- less pronouncede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The negative effects of competition were less pronounced in years with a high carrot fly population.”
t0“Carrots”
Claim · model-written summary
Competition persisted when yield losses from the fly were low.
- Taxon
- CarrotsDaucus carotat0
- Interactor
- carrot flyChamaepsila rosaee1pest
- Outcome
- competition effecte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In years when yield losses caused by the fly were low, the competition effect remained.”
t0“Carrots”
e1“carrot fly, Psila rosae”
The same questions in other papers
intercropping · yield · Daucus carota (carrot)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- negative
3 papers more in this group
See all 7 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.