Abstract
Weeds are often harmful to crop growth due to the competition for space and resources. A field experiment containing four treatments with three replications in a complete randomized design was conducted at Yucheng Comprehensive Experiment Station, Chinese Academy of Sciences since 2008 to assess the impact of shifting from conventional tillage to no-till with crop residue management on weeds and wheat production at the North China Plain. We found that both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth. On the other hand, aboveground weed density in the stage of flowering and filling decreased with crop residue mulching. The density of the soil seed bank in crop residue removal treatments was significantly higher than that of crop residue retention. Besides, either crop residue mulching or incorporating into the soil significantly increased the wheat yield compared with crop residue removal regardless of tillage management. In conclusion, crop residue retention could decrease the weed density and species richness both aboveground and in the soil seed bank and inhibit the growth of broadleaf weeds by the residue layer. Moreover, crop residue retention could improve the wheat yield.
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Claims 6
Claim · model-written summary
Weed density and species richness are higher under continuous no-till than conventional tillage in the regrowth and stem elongation stage of wheat.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- regrowth and stem elongation stagee0
- Treatment
- continuous no-till (NT)e0
- Outcome
- aboveground weed density and species richnesse0
- Direction
- highere0
- Comparator
- conventional tillage (CT)e0
- Setting
- North China Plaine5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth”
e5“at the North China Plain”
Claim · model-written summary
Aboveground weed density in the flowering and filling stage of wheat decreases with crop residue mulching.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- flowering and fillinge1
- Treatment
- crop residue mulchinge1
- Outcome
- aboveground weed densitye1
- Direction
- decreasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth”
e1“aboveground weed density in the stage of flowering and filling decreased with crop residue mulching”
Claim · model-written summary
Soil seed bank density is higher in crop residue removal than in crop residue retention.
- Taxon
- wheatTriticum aestivume0
- Treatment
- crop residue removale2
- Outcome
- density of the soil seed banke2
- Direction
- highere2
- Comparator
- crop residue retentione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth”
e2“The density of the soil seed bank in crop residue removal treatments was significantly higher than that of crop residue retention”
Claim · model-written summary
Crop residue mulching increases wheat yield compared with residue removal, regardless of tillage management.
- Taxon
- wheatTriticum aestivume0
- Treatment
- crop residue mulchinge3
- Outcome
- wheat yielde3
- Direction
- increasede3
- Qualifier
- regardless of tillage managemente3
- Comparator
- crop residue removale3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth”
e3“either crop residue mulching or incorporating into the soil significantly increased the wheat yield compared with crop residue removal regardless of tillage management”
Claim · model-written summary
Incorporating crop residue into the soil increases wheat yield compared with residue removal, regardless of tillage management.
- Taxon
- wheatTriticum aestivume0
- Treatment
- incorporating into the soile3
- Outcome
- wheat yielde3
- Direction
- increasede3
- Qualifier
- regardless of tillage managemente3
- Comparator
- crop residue removale3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth”
e3“either crop residue mulching or incorporating into the soil significantly increased the wheat yield compared with crop residue removal regardless of tillage management”
Claim · model-written summary
Crop residue layer inhibits the growth of broadleaf weeds.
- Taxon
- wheatTriticum aestivume0
- Interactor
- broadleaf weedse4weed
- Outcome
- growth of broadleaf weedse4
- Qualifier
- residue layere4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both aboveground weed density and species richness were higher under continuous no-till (NT) than conventional tillage (CT) in the regrowth and stem elongation stage of wheat growth”
e4“inhibit the growth of broadleaf weeds by the residue layer”
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