Abstract
Cover crops are capable of providing multiple benefits for improving soil quality and enhancing annual crop growth. Maintaining continuous plant cover on agricultural fields with cover crop is of great interest to improve nutrient cycling, prevent soil degradation, and promote further adoption of no-till farming systems. A field study was conducted in eastern South Dakota, USA, in 2007, 2008, and 2009 to evaluate four cover crop combinations [(1) no cover; (2) buckwheat (BUCK) (Fagopyrum esculentum Moench) + slender wheatgrass (Agropyron caninum L.) (SLD WHT); (3) oilseed radish (Raphanus sativus L.) (RAD) + SLD WHT; and (4) purple top turnips (Brassica rapa L.) (TURN + SLD WHT)] sown after oat (Avena sativa L.) on soybean [Glycine max (L.) Merr.] performance. The impacts of no tillage (NT) and conventional tillage (CT) were evaluated at two different planting populations. Soybean plant biomass, seed harvest index, yield, total nitrogen (N), oil concentration, and test weight were measured. Cover crops preceding soybean did not negatively impact most measured plant parameters. Seed yield was increased by the RAD + SLD WHT and TURN + SLD WHT in 2008, whereas in 2007 and 2009 no yield increase or slight yield decrease was shown by the cover crops. Soil tillage practice and planting population had a strong influence on seed yield and seed quality in all three study years.
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Claims 6
Claim · model-written summary
Cover crops did not negatively affect most soybean plant parameters.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- Cover crops preceding soybeane0
- Outcome
- most measured plant parameterse0
- Direction
- did not negatively impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cover crops preceding soybean did not negatively impact most measured plant parameters.”
t0“Soybean”
Claim · model-written summary
Radish plus slender wheatgrass increased soybean seed yield in 2008.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- RAD + SLD WHTe0
- Outcome
- Seed yielde0
- Direction
- increasede0
- Qualifier
- 2008e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield was increased by the RAD + SLD WHT and TURN + SLD WHT in 2008”
t0“Soybean”
Claim · model-written summary
Turnips plus slender wheatgrass increased soybean seed yield in 2008.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- TURN + SLD WHTe0
- Outcome
- Seed yielde0
- Direction
- increasede0
- Qualifier
- 2008e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed yield was increased by the RAD + SLD WHT and TURN + SLD WHT in 2008”
t0“Soybean”
Claim · model-written summary
Cover crops showed no increase or a slight decrease in soybean seed yield in 2007 and 2009.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- cover cropse0
- Outcome
- yielde0
- Direction
- no yield increase or slight yield decreasee0
- Qualifier
- 2007 and 2009e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in 2007 and 2009 no yield increase or slight yield decrease was shown by the cover crops”
t0“Soybean”
Claim · model-written summary
Tillage practice and planting population strongly influenced soybean seed yield.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Soil tillage practice and planting populatione0
- Outcome
- seed yielde0
- Qualifier
- all three study yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil tillage practice and planting population had a strong influence on seed yield and seed quality in all three study years.”
t0“Soybean”
Claim · model-written summary
Tillage practice and planting population strongly influenced soybean seed quality.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Soil tillage practice and planting populatione0
- Outcome
- seed qualitye0
- Qualifier
- all three study yearse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil tillage practice and planting population had a strong influence on seed yield and seed quality in all three study years.”
t0“Soybean”