Abstract
Intercropping of spring cereals in a permanent stand of white clover ( Trifolium repens L.) is a novel, low input cropping system, and little is known about the agronomic management of this system. An experiment was conducted over two growing seasons in 1998 and 1999 to determine the impact of a white clover intercrop on spring oat ( Avena sativa L.) growth and grain yield at three different seeding rates of oat, and also to determine the effect of the three different white clover cultivars (cv. Aran, cv. S184 and cv. Milo), on weed pressure and growth of the oat crop. The clover cultivars differed in stolon morphology and leaf size. Oat in monoculture was included for comparison. The white clover intercrops did not reduce the weed pressure compared with oat in monoculture. Oat grain nitrogen concentration and content was raised in the intercropped oats. Grain yields in an intercrop were similar to those in a monoculture. Oat seeding densities did not affect grain yields. The oat grain yields in 1998 were significantly higher with S184 as intercrop. In 1999 it was directly opposite, grain yields were significantly lower with S184 as intercrop.
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Claims 5
Claim · model-written summary
White clover intercrops did not reduce weed pressure relative to oat monoculture.
- Taxon
- oat
Avena sativae0 - Treatment
- white clover intercropse0
- Interactor
- white clover
Trifolium repense0weed - Outcome
- weed pressuree0
- Direction
- did not reducee0
- Comparator
- oat in monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The white clover intercrops did not reduce the weed pressure compared with oat in monoculture.”
Claim · model-written summary
Intercropping raised oat grain nitrogen concentration and content.
- Taxon
- OatAvena sativae0
- Organ / stage
- graine0
- Treatment
- intercropped oatse0
- Outcome
- grain nitrogen concentration and contente0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oat grain nitrogen concentration and content was raised in the intercropped oats.”
Claim · model-written summary
Oat seeding densities did not affect grain yields.
- Taxon
- OatAvena sativae0
- Treatment
- seeding densitiese0
- Outcome
- grain yieldse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Oat seeding densities did not affect grain yields.”
Claim · model-written summary
In 1998, S184 as intercrop significantly increased oat grain yield.
- Taxon
- oatAvena sativae0
- Material
- S184e0
- Treatment
- S184 as intercrope0
- Outcome
- grain yieldse0
- Direction
- highere0
- Qualifier
- 1998e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The oat grain yields in 1998 were significantly higher with S184 as intercrop.”
Claim · model-written summary
In 1999, S184 as intercrop significantly lowered oat grain yield.
- Taxon
- oatAvena sativat0
- Material
- S184e0
- Treatment
- S184 as intercrope0
- Outcome
- grain yieldse0
- Direction
- lowere0
- Qualifier
- 1999e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In 1999 it was directly opposite, grain yields were significantly lower with S184 as intercrop.”
t0“oat”
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