Abstract
The purpose of the present studies was to screen for suitable cover crops and seeding rates and investigate the influence of non-suppressed and mechanically suppressed living mulch on white cabbage yield, weed growth, pest damage and green manuring effects. Because no differences in weed suppression between the species/cultivars were found in the first experiment, Trifolium repens L. cv. Pertina, which had least negative impact on cabbage yield was chosen for the second experiment. In addition, Trifolium subterraneum L. cv. Geraldton was included. The competition between cover crop and cabbage was considerable in the second experiment. Mowing once or twice did not improve cabbage yield compared with unmowed treatments. A considerable increase in cabbage yield was achieved both in subclover and white clover by rototilling between the rows 6 weeks after transplanting. The cover crops did not reduce weed biomass or number of weeds early in the season compared with monoculture, but weed biomass in late summer became significantly lower in living mulch. Rototilling was more effective for weed suppression than mowing. Cover crop combined with rototilling reduced weed biomass by 89% compared with untreated monoculture. Subclover living mulch gave the earliest and most ground coverage and the lowest cabbage yield, but it also gave the least insect damage. Both subclover and white clover living mulches gave significantly more marketable cabbage heads than monoculture due to less insect damage. However, damage from caterpillars, primarily Mamestra brassicae L., was too great in all treatments to produce a commercially viable crop. White clover intercropping in cabbage gave significantly higher oat (Avena sativa L.) yield the subsequent year than monocropping. The implications of the current findings on future efforts to improve intercropping are discussed.
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Claims 17
Claim · model-written summary
Cover crop species and cultivars did not differ in weed suppression in the first experiment.
Not reportedTaxon
Verbatim
e0“no differences in weed suppression between the species/cultivars were found in the first experiment”
Claim · model-written summary
Trifolium repens cv. Pertina had the least negative impact on cabbage yield.
- Taxon
- cabbage
Brassica oleracea var. capitatae0 - Material
- Trifolium repens L. cv. Pertinae0
- Outcome
- cabbage yielde0
- Direction
- least negative impacte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trifolium repens L. cv. Pertina, which had least negative impact on cabbage yield”
Claim · model-written summary
Cover crop competition with cabbage was considerable in the second experiment.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Outcome
- competition between cover crop and cabbagee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The competition between cover crop and cabbage was considerable in the second experiment.”
Claim · model-written summary
Mowing once or twice did not improve cabbage yield compared with unmowed treatments.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- Mowing once or twicee0
- Outcome
- cabbage yielde0
- Direction
- did not improvee0
- Comparator
- unmowed treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mowing once or twice did not improve cabbage yield compared with unmowed treatments.”
Claim · model-written summary
Rototilling between rows at six weeks substantially increased cabbage yield with subclover.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- rototilling between the rows 6 weeks after transplantinge0
- Outcome
- cabbage yielde0
- Direction
- increasee0
- Qualifier
- subclovere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A considerable increase in cabbage yield was achieved both in subclover and white clover by rototilling between the rows 6 weeks after transplanting.”
Claim · model-written summary
Rototilling between rows at six weeks substantially increased cabbage yield with white clover.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- rototilling between the rows 6 weeks after transplantinge0
- Outcome
- cabbage yielde0
- Direction
- increasee0
- Qualifier
- white clovere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A considerable increase in cabbage yield was achieved both in subclover and white clover by rototilling between the rows 6 weeks after transplanting.”
Claim · model-written summary
Cover crops did not reduce early-season weed biomass or weed counts compared with monoculture.
- Treatment
- cover cropse0
- Outcome
- weed biomass or number of weedse0
- Direction
- did not reducee0
- Qualifier
- early in the seasone0
- Comparator
- monoculturee0
Not reportedTaxon
Verbatim
e0“The cover crops did not reduce weed biomass or number of weeds early in the season compared with monoculture”
Claim · model-written summary
Late-summer weed biomass was significantly lower with living mulch.
Not reportedTaxonComparator
Verbatim
e0“weed biomass in late summer became significantly lower in living mulch.”
Claim · model-written summary
Rototilling suppressed weeds more effectively than mowing.
Not reportedTaxon
Verbatim
e0“Rototilling was more effective for weed suppression than mowing.”
Claim · model-written summary
Cover crop plus rototilling reduced weed biomass by 89% versus untreated monoculture.
- Treatment
- Cover crop combined with rototillinge0
- Outcome
- weed biomasse0
- Direction
- reducede0
- Value
- 89%e0
- Comparator
- untreated monoculturee0
Not reportedTaxon
Verbatim
e0“Cover crop combined with rototilling reduced weed biomass by 89% compared with untreated monoculture.”
Claim · model-written summary
Subclover living mulch gave the earliest and greatest ground coverage.
Not reportedTaxon
Verbatim
e0“Subclover living mulch gave the earliest and most ground coverage”
Claim · model-written summary
Subclover living mulch gave the lowest cabbage yield.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- Subclover living mulche0
- Outcome
- cabbage yielde0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Subclover living mulch gave the earliest and most ground coverage and the lowest cabbage yield”
Claim · model-written summary
Subclover living mulch gave the least insect damage.
Not reportedTaxon
Verbatim
e0“but it also gave the least insect damage.”
Claim · model-written summary
Subclover living mulch yielded significantly more marketable cabbage heads than monoculture because of reduced insect damage.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- subclovere0
- Outcome
- marketable cabbage headse0
- Direction
- moree0
- Qualifier
- due to less insect damagee0
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both subclover and white clover living mulches gave significantly more marketable cabbage heads than monoculture due to less insect damage.”
Claim · model-written summary
White clover living mulch yielded significantly more marketable cabbage heads than monoculture because of reduced insect damage.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- white clovere0
- Outcome
- marketable cabbage headse0
- Direction
- moree0
- Qualifier
- due to less insect damagee0
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both subclover and white clover living mulches gave significantly more marketable cabbage heads than monoculture due to less insect damage.”
Claim · model-written summary
Caterpillar damage, mainly by Mamestra brassicae, prevented commercially viable cabbage production across treatments.
- Interactor
- Mamestra brassicae L.
_-_(imago)%2C_Arnhem%2C_the_Netherlands_-_2.jpg?width=60)
Mamestra brassicaee0pest - Outcome
- damage from caterpillarse0
- Qualifier
- all treatmentse0
Not reportedTaxonDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_-_(imago)%2C_Arnhem%2C_the_Netherlands_-_2.jpg?width=500)
Verbatim
e0“damage from caterpillars, primarily Mamestra brassicae L., was too great in all treatments to produce a commercially viable crop.”
Claim · model-written summary
White clover intercropping with cabbage significantly increased subsequent oat yield relative to monocropping.
- Taxon
- oat (Avena sativa L.)
Avena sativae0 - Treatment
- White clover intercropping in cabbagee0
- Outcome
- oat (Avena sativa L.) yielde0
- Direction
- highere0
- Qualifier
- the subsequent yeare0
- Comparator
- monocroppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“White clover intercropping in cabbage gave significantly higher oat (Avena sativa L.) yield the subsequent year than monocropping.”
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See all 50 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.