Abstract
Abstract Soil inhabiting pests and rot of feeding roots of sugar beet depending on rotation ‐ Results of a long‐term trial Over a period of 17 years a trial was carried out with sugar beet, cereals and oilseed rape in different crop rotations on a field near Göttingen (Lower Saxony). The frequency of sugar beet in the rotation was 17, 25, 33 and 67 %. In absence of beet nematodes, root and sugar yield of the beet decreased after repeated growing of sugar beet in short rotations compared to variants with long rotations. Sugar content and beet quality were only slightly influenced. By applying a bioassay (BW‐Test) with young beet plants in the greenhouse it was shown that increasing infections on the tips of rootlets of the beet plants were the cause for decreasing beet yield in close rotations. Mortality of young beet plants and progress of infection in the test indicated roughly the quantity of pathogenic fungi in the soil. In the roots of the bait platits the parasitic fungus Aphanomyces cochlioides predominated. Rate of infection and yield reduction in the field were decisively influenced by weather conditions. Differences in yield between sugar beet grown in a three‐year and a four‐year rotation, however, were not significant. An occurrence of beet pests depending on crop rotation was stated only for Atomaria linearis and this only in a few years.
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Claims 8
Claim · model-written summary
Short repeated sugar beet rotations decreased root and sugar yield relative to long rotations without beet nematodes.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise0 - Treatment
- repeated growing of sugar beet in short rotationse0
- Outcome
- root and sugar yielde0
- Direction
- decreasede0
- Qualifier
- In absence of beet nematodese0
- Comparator
- variants with long rotationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In absence of beet nematodes, root and sugar yield of the beet decreased after repeated growing of sugar beet in short rotations compared to variants with long rotations.”
Claim · model-written summary
Rotation only slightly influenced sugar content and beet quality.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- different crop rotationse1
- Outcome
- Sugar content and beet qualitye0
- Qualifier
- only slightlye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sugar content and beet quality were only slightly influenced.”
e1“sugar beet, cereals and oilseed rape in different crop rotations”
Claim · model-written summary
Increasing rootlet-tip infections caused declining beet yield in close rotations.
- Taxon
- beet
Beta vulgarise0 - Outcome
- beet yielde0
- Direction
- decreasinge0
- Qualifier
- increasing infections on the tips of rootletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing infections on the tips of rootlets of the beet plants were the cause for decreasing beet yield in close rotations.”
Claim · model-written summary
Young beet mortality and infection progression roughly indicated soil pathogenic fungi quantity in the bioassay.
- Taxon
- beetBeta vulgarise0
- Interactor
- pathogenic fungie0pathogen
- Outcome
- quantity of pathogenic fungi in the soile0
- Qualifier
- roughlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mortality of young beet plants and progress of infection in the test indicated roughly the quantity of pathogenic fungi in the soil.”
Claim · model-written summary
Aphanomyces cochlioides predominated in bait-plant roots.
- Taxon
- Aphanomyces cochlioidesAphanomyces cochlioidese0
- Organ / stage
- rootse0
- Outcome
- predominatede0
Verbatim
e0“In the roots of the bait platits the parasitic fungus Aphanomyces cochlioides predominated.”
Claim · model-written summary
Weather decisively influenced field infection rate and yield reduction.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- weather conditionse0
- Outcome
- Rate of infection and yield reductione0
- Setting
- fielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rate of infection and yield reduction in the field were decisively influenced by weather conditions.”
e1“sugar beet, cereals and oilseed rape in different crop rotations”
Claim · model-written summary
Yield differences between three-year and four-year sugar beet rotations were not significant.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- three‐yeare0
- Outcome
- yielde0
- Comparator
- four‐year rotatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in yield between sugar beet grown in a three‐year and a four‐year rotation, however, were not significant.”
Claim · model-written summary
Only Atomaria linearis showed rotation-dependent occurrence, and only in a few years.
- Taxon
- Atomaria linearis
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Atomaria linearise0 - Treatment
- crop rotatione0
- Interactor
- beetBeta vulgarise0host
- Outcome
- occurrence of beet pestse0
- Qualifier
- only in a few yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.png?width=500)
Verbatim
e0“An occurrence of beet pests depending on crop rotation was stated only for Atomaria linearis and this only in a few years.”
The same questions in other papers
Beta vulgaris subsp. vulgaris · quality: sugar starch · Beta vulgaris (beet)Positive and negative results
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See all 5 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.