Abstract
Currently, one of the biggest challenges faced by organic no-tillage farming is weed control. Thus, the use of cropping practices that help in the control of weeds is extremely important. The objective of this study was to evaluate population density and level of weed infestation in an organic no-tillage corn cropping system under different soil covers. The experiment was conducted in a randomized block design with six repetitions and five treatments, consisting of three soil covers in an organic no-tillage system, and an organic and a conventional system, both without soil cover. The treatments with soil cover used a grass species represented by the black oat, a leguminous species represented by the white lupine, and intercropping between both species. Corn was sown with spacing of 1.0 m between rows and 0.20 m between plants, using the commercial hybrid AG 1051. Infestation in corn was evaluated at stages V5 and V10, and weed density was evaluated at stage V5. The use of black oat straw alone or intercropped with white lupine, in the organic no-tillage corn cropping system, reduced the percentage of weed infestation and absolute weed density. Management-intensive systems and systems without soil cover showed higher relative densities for species Oxalis spp., Galinsoga quadriradiata and Stachys arvensis. The species Cyperus rotundus showed the highest relative density on organic no-tillage corn cropping systems. Black oat straw in the organic no-tillage cropping system limited the productive potential of corn.
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Claims 6
Claim · model-written summary
Black oat straw reduced weed infestation in organic no-tillage corn.
- Taxon
- corn
Zea mays subsp. mayst0 - Treatment
- black oat straw alonee0
- Interactor
- weede0weed
- Outcome
- percentage of weed infestatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn cropping system”
e0“The use of black oat straw alone or intercropped with white lupine, in the organic no-tillage corn cropping system, reduced the percentage of weed infestation and absolute weed density.”
Claim · model-written summary
Black oat straw reduced absolute weed density.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- black oat straw alonee0
- Interactor
- weede0weed
- Outcome
- absolute weed densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn cropping system”
e0“The use of black oat straw alone or intercropped with white lupine, in the organic no-tillage corn cropping system, reduced the percentage of weed infestation and absolute weed density.”
Claim · model-written summary
Black oat straw intercropped with white lupine reduced weed infestation and absolute weed density.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- black oat straw alone or intercropped with white lupinee0
- Interactor
- weede0weed
- Outcome
- percentage of weed infestation and absolute weed densitye0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The use of black oat straw alone or intercropped with white lupine, in the organic no-tillage corn cropping system, reduced the percentage of weed infestation and absolute weed density.”
Claim · model-written summary
Management-intensive and uncovered systems had higher relative densities of three weed taxa.
- Taxon
- cornZea mays subsp. mayst0
- Treatment
- Management-intensive systems and systems without soil covere0
- Outcome
- higher relative densities for species Oxalis spp., Galinsoga quadriradiata and Stachys arvensise0
- Direction
- highere0
OxalisOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“corn cropping system”
e0“Management-intensive systems and systems without soil cover showed higher relative densities for species Oxalis spp., Galinsoga quadriradiata and Stachys arvensis.”
Claim · model-written summary
Cyperus rotundus had the highest relative density in organic no-tillage corn.
- Taxon
- cornZea mays subsp. mayse0
- Interactor
- Cyperus rotundus
Cyperus rotunduse0weed - Outcome
- highest relative densitye0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The species Cyperus rotundus showed the highest relative density on organic no-tillage corn cropping systems.”
Claim · model-written summary
Black oat straw limited corn productive potential.
- Taxon
- cornZea mays subsp. mayse0
- Treatment
- Black oat strawe0
- Outcome
- productive potential of corne0
- Direction
- limitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Black oat straw in the organic no-tillage cropping system limited the productive potential of corn.”
The same questions in other papers
Avena strigosa · organism · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- negative
intercropping · weed · Zea mays (maize)Positive and negative results
70 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
75 papers more in this group
See all 79 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.