Abstract
A new herbicide site of action (SOA) is needed by rice (Oryza sativa L.) producers in the Midsouth for the control of problematic and herbicide-resistant weeds. Currently, six problematic weeds are relevant to Midsouthern rice producers because of resistance to at least one SOA, if not more. Gowan Company is in the process of commercializing benzobicyclon for use in Midsouthern rice systems. Benzobicyclon, a Group 27 post-flood herbicide, controls a broad spectrum of aquatics, broadleaves, grasses, and sedges, including those currently resistant to Group 2 herbicides. This will be the first 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicide commercially available in US rice production. Since, benzobicyclon is still under development, it is important to evaluate this herbicide in a drill-seeded rice production system. Therefore, experiments were conducted across Arkansas to determine rice cultivar tolerance, weed spectrum controlled, rate optimization, compatible tank-mix partners, and rotational crop safety. It is recommended to apply benzobicyclon into a continuous flood system. Japonica cultivars exhibited excellent crop safety to benzobicyclon, while indica cultivars showed high levels of sensitivity to the herbicide. Benzobicyclon effectively controlled Amazon sprangletop (Leptochloa panicoides J. Presl), ducksalad (Heteranthera limosa Sw.), California arrowhead (Sagittaria latifolia Willd.), indica rice, hemp sesbania (Sesbania herbacea Mill.), northern jointvetch (Aeschynomene virginica L.), red sprangletop (Leptochloa chinensis L.), rice flatsedge (Cyperus iria L.), and smallflower umbrella sedge (Cyperus difformis L.). The efficacy and spectrum of control of benzobicyclon is increased when applied with tank-mix partners such as bispyribac, cyhalofop, halosulfuron, imazamox, penoxsulam, and propanil. Cotton, grain sorghum, soybean, and sunflower can safely be planted in rotation with a drill-seeded rice crop that has been treated with benzobicyclon post-flood without concerns of crop yield loss. The findings of this research suggest that benzobicyclon has a strong fit in midsouthern rice systems.
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Claims 6
Claim · model-written summary
Japonica rice cultivars showed excellent safety under benzobicyclon.
- Taxon
- rice
Oryza sativat0 - Material
- Japonica cultivarse0
- Treatment
- benzobicyclone0
- Outcome
- excellent crop safetye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Japonica cultivars exhibited excellent crop safety to benzobicyclon”
t0“Rice”
Claim · model-written summary
Indica rice cultivars were highly sensitive to benzobicyclon.
- Taxon
- riceOryza sativat0
- Material
- indica cultivarse0
- Treatment
- the herbicidee0
- Outcome
- high levels of sensitivitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“indica cultivars showed high levels of sensitivity to the herbicide”
t0“Rice”
Claim · model-written summary
Benzobicyclon effectively controlled the named weeds in rice systems.
- Taxon
- riceOryza sativat0
- Treatment
- Benzobicyclone0
- Outcome
- effectively controllede0
- Direction
- controllede0
- Qualifier
- Amazon sprangletop (Leptochloa panicoides J. Presl), ducksalad (Heteranthera limosa Sw.), California arrowhead (Sagittaria latifolia Willd.), indica rice, hemp sesbania (Sesbania herbacea Mill.), northern jointvetch (Aeschynomene virginica L.), red sprangletop (Leptochloa chinensis L.), rice flatsedge (Cyperus iria L.), and smallflower umbrella sedge (Cyperus difformis L.)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Benzobicyclon effectively controlled Amazon sprangletop (Leptochloa panicoides J. Presl), ducksalad (Heteranthera limosa Sw.), California arrowhead (Sagittaria latifolia Willd.), indica rice, hemp sesbania (Sesbania herbacea Mill.), northern jointvetch (Aeschynomene virginica L.), red sprangletop (Leptochloa chinensis L.), rice flatsedge (Cyperus iria L.), and smallflower umbrella sedge (Cyperus difformis L.).”
t0“Rice”
Claim · model-written summary
Tank mix partners increased benzobicyclon control efficacy and spectrum.
- Taxon
- riceOryza sativat0
- Treatment
- tank-mix partners such as bispyribac, cyhalofop, halosulfuron, imazamox, penoxsulam, and propanile0
- Outcome
- efficacy and spectrum of controle0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The efficacy and spectrum of control of benzobicyclon is increased when applied with tank-mix partners such as bispyribac, cyhalofop, halosulfuron, imazamox, penoxsulam, and propanil.”
t0“Rice”
Claim · model-written summary
Cotton, grain sorghum, soybean and sunflower could be rotated after treated drill seeded rice without yield loss.
- Taxon
- Cotton
Gossypium hirsutume0 - Treatment
- benzobicyclon post-floode0
- Outcome
- without concerns of crop yield losse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cotton, grain sorghum, soybean, and sunflower can safely be planted in rotation with a drill-seeded rice crop that has been treated with benzobicyclon post-flood without concerns of crop yield loss.”
Claim · model-written summary
The authors recommend benzobicyclon application in a continuous flood system.
- Taxon
- riceOryza sativat0
- Outcome
- apply benzobicyclon into a continuous flood systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It is recommended to apply benzobicyclon into a continuous flood system.”
t0“Rice”
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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.