Abstract
In a 4-yr study, rapeseed (Brassica campestris L.) was seeded where wild oats (Avena fatua L.) had been controlled either by various delayed seeding procedures or by an early spring application of trifluralin at 1.1 kg a.i./ha. The trifluralin treatment provided the best wild oat control. However, allowing wild oats to grow to the two-leaf stage, destroying them with cultivation and then seeding rapeseed resulted in commercially acceptable control (70% or more) with little or no loss of crop yield. Postponing cultivation until the wild oats reached the three- to four-leaf stage provided control that was almost equivalent to that attained with cultivation at the two-leaf stage but resulted in reduced crop yields. Destruction of wild oat seedlings at the two-leaf stage by paraquat or glyphosate did not improve the level of control over that provided by cultivation.Key words: Oat (wild), delayed seeding, rapeseed, trifluralin
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Claims 7
Claim · model-written summary
Trifluralin gave the best wild oat control.
AvenaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The trifluralin treatment provided the best wild oat control.”
e1“rapeseed (Brassica campestris L.) was seeded where wild oats (Avena fatua L.) had been controlled”
Claim · model-written summary
Cultivating wild oats at the two-leaf stage before rapeseed seeding gave commercially acceptable control of at least 70%.
- Taxon
- rapeseede0
- Treatment
- destroying them with cultivation and then seeding rapeseede0
- Outcome
- commercially acceptable controle0
- Direction
- controle0
- Value
- 70% or moree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“allowing wild oats to grow to the two-leaf stage, destroying them with cultivation and then seeding rapeseed resulted in commercially acceptable control (70% or more)”
Claim · model-written summary
The two-leaf cultivation schedule caused little or no crop yield loss.
- Taxon
- rapeseede0
- Treatment
- destroying them with cultivation and then seeding rapeseede0
- Outcome
- crop yielde0
- Direction
- little or no losse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“allowing wild oats to grow to the two-leaf stage, destroying them with cultivation and then seeding rapeseed resulted in commercially acceptable control (70% or more) with little or no loss of crop yield.”
Claim · model-written summary
Cultivating at the three- to four-leaf stage controlled wild oats almost as well as cultivation at the two-leaf stage.
- Taxon
- rapeseede1
- Treatment
- Postponing cultivation until the wild oats reached the three- to four-leaf stagee0
- Outcome
- controle0
- Direction
- almost equivalente0
- Comparator
- cultivation at the two-leaf stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Postponing cultivation until the wild oats reached the three- to four-leaf stage provided control that was almost equivalent to that attained with cultivation at the two-leaf stage”
e1“seeding rapeseed resulted in commercially acceptable control”
Claim · model-written summary
Cultivating at the three- to four-leaf stage reduced rapeseed yields.
- Taxon
- rapeseede1
- Treatment
- Postponing cultivation until the wild oats reached the three- to four-leaf stagee0
- Outcome
- crop yieldse0
- Direction
- reducede0
- Comparator
- cultivation at the two-leaf stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Postponing cultivation until the wild oats reached the three- to four-leaf stage provided control that was almost equivalent to that attained with cultivation at the two-leaf stage but resulted in reduced crop yields.”
e1“seeding rapeseed resulted in commercially acceptable control”
Claim · model-written summary
Paraquat destruction of wild oat seedlings at the two-leaf stage did not improve control over cultivation.
Verbatim
e0“Destruction of wild oat seedlings at the two-leaf stage by paraquat or glyphosate did not improve the level of control over that provided by cultivation.”
e1“seeding rapeseed resulted in commercially acceptable control”
Claim · model-written summary
Glyphosate destruction of wild oat seedlings at the two-leaf stage did not improve control over cultivation.
Verbatim
e0“Destruction of wild oat seedlings at the two-leaf stage by paraquat or glyphosate did not improve the level of control over that provided by cultivation.”
e1“seeding rapeseed resulted in commercially acceptable control”
The same questions in other papers
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See all 7 papers →glyphosate · control · Brassica napus (oilseed rape)Positive and negative results
6 in the opposite direction
- positive
- positive
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See all 7 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.