Abstract
A series of field, growth chamber, and laboratory experiments showed that HOE 23408 [4-(2,4-dichlorophenoxy)-phenoxy propionic acid methyl ester] as a post-emergence herbicide provided selective control of wild oats (Avena fatua L.) and green foxtail (Seteria viridis L. Beauv.) in wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) equal to or better than barban (4-chloro-2-butynyl m-chlorocarbanilate) over a growth period extending from the 2- to 5-leaf stages in both weed species. Wheat was highly tolerant to HOE 23408 at all growth stages, while with barley there was some leaf mottling and suppression of both shoot and root development. The 6-row cultivars Gait, Bonanza and Conquest largely recovered from the effects, but the 2-row cultivar Betzes suffered significant yield reduction. HOE 23408 moved mainly in an acropetal direction when applied to different parts of the wild oats plant. Application made on or below the meristematic area of the stem apex caused necrosis and eventual death of the entire plant. Phytotoxicity following soil application was markedly less than with foliar application. Indications were that it was also more phytotoxic to the emerging weeds via shoot than via root contact. Although HOE 23408 is relatively insoluble in water, it leached to a limited extent in soils.
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Claims 10
Claim · model-written summary
HOE 23408 controlled wild oats in wheat at least as well as barban from the two- to five-leaf stages.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- HOE 23408e0
- Outcome
- control of wild oatse0
- Direction
- equal to or better thane0
- Qualifier
- 2- to 5-leaf stagese0
- Comparator
- barbane0
AvenaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HOE 23408 [4-(2,4-dichlorophenoxy)-phenoxy propionic acid methyl ester] as a post-emergence herbicide provided selective control of wild oats (Avena fatua L.) and green foxtail (Seteria viridis L. Beauv.) in wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) equal to or better than barban (4-chloro-2-butynyl m-chlorocarbanilate) over a growth period extending from the 2- to 5-leaf stages in both weed species”
Claim · model-written summary
HOE 23408 controlled green foxtail in barley at least as well as barban.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- HOE 23408e0
- Interactor
- green foxtaile0weed
- Outcome
- green foxtaile0
- Direction
- equal to or better thane0
- Comparator
- barbane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“HOE 23408 [4-(2,4-dichlorophenoxy)-phenoxy propionic acid methyl ester] as a post-emergence herbicide provided selective control of wild oats (Avena fatua L.) and green foxtail (Seteria viridis L. Beauv.) in wheat (Triticum aestivum L.) and barley (Hordeum vulgare L.) equal to or better than barban (4-chloro-2-butynyl m-chlorocarbanilate)”
Claim · model-written summary
Wheat was highly tolerant to HOE 23408 at all growth stages.
- Taxon
- WheatTriticum aestivume0
- Organ / stage
- all growth stagese0
- Treatment
- HOE 23408e0
- Outcome
- highly tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wheat was highly tolerant to HOE 23408 at all growth stages”
Claim · model-written summary
Barley showed leaf mottling and suppressed shoot and root development under HOE 23408.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- HOE 23408t0
- Outcome
- leaf mottling and suppression of both shoot and root developmente0
- Direction
- suppressione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with barley there was some leaf mottling and suppression of both shoot and root development”
t0“HOE 23408, A NEW SELECTIVE HERBICIDE FOR WILD OATS AND GREEN FOXTAIL IN WHEAT AND BARLEY”
Claim · model-written summary
Gait, Bonanza and Conquest largely recovered from HOE 23408 effects.
- Taxon
- BARLEYHordeum vulgaret0
- Material
- Gait, Bonanza and Conqueste0
- Outcome
- largely recoverede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 6-row cultivars Gait, Bonanza and Conquest largely recovered from the effects”
t0“BARLEY”
Claim · model-written summary
Betzes suffered significant yield reduction after HOE 23408.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the 2-row cultivar Betzes suffered significant yield reduction”
t0“HOE 23408, A NEW SELECTIVE HERBICIDE FOR WILD OATS AND GREEN FOXTAIL IN WHEAT AND BARLEY”
Claim · model-written summary
HOE 23408 moved mainly acropetally in wild oats.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HOE 23408 moved mainly in an acropetal direction when applied to different parts of the wild oats plant”
Claim · model-written summary
Application on or below the stem apex meristem caused necrosis and death of wild oats.
- Treatment
- Application made on or below the meristematic area of the stem apexe0
- Outcome
- necrosis and eventual death of the entire plante0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application made on or below the meristematic area of the stem apex caused necrosis and eventual death of the entire plant”
t0“WILD OATS”
Claim · model-written summary
Soil application caused less phytotoxicity than foliar application.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phytotoxicity following soil application was markedly less than with foliar application”
t0“WILD OATS”
Claim · model-written summary
HOE 23408 appeared more phytotoxic to emerging weeds through shoot than root contact.
- Treatment
- HOE 23408t0
- Outcome
- phytotoxic to the emerging weedse0
- Direction
- moree0
- Comparator
- root contacte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more phytotoxic to the emerging weeds via shoot than via root contact”
t0“HOE 23408, A NEW SELECTIVE HERBICIDE FOR WILD OATS AND GREEN FOXTAIL IN WHEAT AND BARLEY”
The same questions in other papers
diclofop-methyl · yield · Hordeum vulgare (barley)Positive and negative results
2 in the opposite direction
- positive
- positive
diclofop-methyl · Avena · Triticum aestivum (wheat)Results agree
1 paper in the same direction as this paper
- positive
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.