Abstract
Growth chamber experiments were conducted to elucidate the morphological and physiological responses of rice to postemergence application of fenoxaprop. Two rice cultivars, ‘Newbonnet’ and ‘Mars’, and barnyardgrass were treated with 0.17 kg ai ha −1 fenoxaprop at the five-leaf stage. Within 2 days of fenoxaprop application, rice cultivars developed a white chlorotic band across leaves that were in direct contact with spray droplets. Leaf elongation rates for the two rice cultivars were inhibited by 40% after 4 days and by over 50% after 14 days. Inhibition of leaf elongation by fenoxaprop contributed to an overall decrease in leaf area and shoot dry weight. Net photosynthesis was reduced by 35% in fenoxaprop-treated plants 11 days after application, although stomatal conductance was not affected. Nitrogen fertilization prior to fenoxaprop application increased foliar injury of both rice cultivars. Visible injury symptoms showed the following order of susceptibility to foliar-applied fenoxaprop: barnyardgrass > Mars rice > Newbonnet rice.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Fenoxaprop produced a white chlorotic leaf band within two days.
- Taxon
- rice
Oryza sativae0 - Organ / stage
- leavese0
- Treatment
- fenoxaprop applicatione0
- Outcome
- white chlorotic band across leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Within 2 days of fenoxaprop application, rice cultivars developed a white chlorotic band across leaves that were in direct contact with spray droplets”
Claim · model-written summary
Fenoxaprop inhibited rice leaf elongation by 40% after four days.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxapropt0
- Outcome
- Leaf elongation ratese0
- Direction
- inhibitede0
- Value
- 40%e0
- Qualifier
- after 4 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf elongation rates for the two rice cultivars were inhibited by 40% after 4 days and by over 50% after 14 days”
t0“Rice (Oryza sativa) to Fenoxaprop”
Claim · model-written summary
Fenoxaprop inhibited rice leaf elongation by over 50% after 14 days.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxapropt0
- Outcome
- Leaf elongation ratese0
- Direction
- inhibitede0
- Value
- over 50%e0
- Qualifier
- after 14 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf elongation rates for the two rice cultivars were inhibited by 40% after 4 days and by over 50% after 14 days”
t0“Rice (Oryza sativa) to Fenoxaprop”
Claim · model-written summary
Fenoxaprop-linked inhibition of elongation decreased leaf area and shoot dry weight.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxaprope0
- Outcome
- decrease in leaf area and shoot dry weighte0
- Qualifier
- Inhibition of leaf elongatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibition of leaf elongation by fenoxaprop contributed to an overall decrease in leaf area and shoot dry weight”
t0“Rice”
Claim · model-written summary
Fenoxaprop reduced net photosynthesis by 35% at 11 days.
- Taxon
- riceOryza sativat0
- Treatment
- fenoxaprop-treatede0
- Outcome
- Net photosynthesise0
- Direction
- reducede0
- Value
- 35%e0
- Qualifier
- 11 days after applicatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Net photosynthesis was reduced by 35% in fenoxaprop-treated plants 11 days after application”
t0“Rice”
Claim · model-written summary
Fenoxaprop did not affect stomatal conductance.
- Taxon
- riceOryza sativat0
- Treatment
- Fenoxapropt0
- Outcome
- stomatal conductancee0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stomatal conductance was not affected”
t0“Rice (Oryza sativa) to Fenoxaprop”
Claim · model-written summary
Nitrogen fertilization before fenoxaprop increased foliar injury in both rice cultivars.
- Taxon
- riceOryza sativae0
- Treatment
- Nitrogen fertilization prior to fenoxaprop applicatione0
- Outcome
- foliar injurye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilization prior to fenoxaprop application increased foliar injury of both rice cultivars”
Claim · model-written summary
Mars rice was more susceptible to fenoxaprop injury than Newbonnet rice.
- Taxon
- riceOryza sativae0
- Material
- Mars ricee0
- Outcome
- susceptibility to foliar-applied fenoxaprope0
- Direction
- higherinferrede0
- Comparator
- Newbonnet ricee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Visible injury symptoms showed the following order of susceptibility to foliar-applied fenoxaprop: barnyardgrass > Mars rice > Newbonnet rice”
The same questions in other papers
fertilization · crop injury · Oryza sativa (rice)Positive and negative results
7 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 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.