Abstract
Effects of propanil [ N -(3,4-dichlorophenyl)propanamide] applied to three- to four-leaf rice ( Oryza sativa L.) 1 or 7 days before, after, or tank mixed with methyl parathion ( O,O -dimethyl- O -4-nitrophenyl phosphorothioate) were determined under different environmental conditions. Field experiments determined the effect on yield of drill-seeded rice, ‘Labelle’ for two planting dates in 1982 and ‘Lemont’ for one planting date in 1986. Treatments were applied at sunrise and at noon. Growth chamber and greenhouse experiments determined the effects of temperature, relative humidity (RH), and soil moisture on response of Labelle rice. In all experiments, propanil, both alone and with methyl parathion, resulted in 20 to 30% leaf burn during the first week after treatment with rapid recovery to less than 10% injury after 3 to 4 weeks. In field experiments, yields were not reduced in the treated rice below that in the untreated controls. In controlled-environment experiments, rice was not injured by propanil plus methyl parathion more than by propanil alone after 2 to 4 weeks. Both treated and untreated rice were injured more by the environmental conditions of high (40 C) temperature, low (40%) RH, and low (near the wilting point) soil moisture than by low (30 C) temperature, high (100%) RH, and flooded soil.
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 5
Claim · model-written summary
Propanil alone or with methyl parathion caused 20 to 30% leaf burn on rice during the first week after treatment.
- Taxon
- Rice
Oryza sativat0 - Organ / stage
- leafe1
- Treatment
- propanile1
- Outcome
- leaf burne1
- Direction
- increaseinferrede1
- Value
- 20 to 30%e1
- Qualifier
- during the first week after treatmente1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa)”
e1“In all experiments, propanil, both alone and with methyl parathion, resulted in 20 to 30% leaf burn during the first week after treatment”
Claim · model-written summary
Rice injury from propanil with or without methyl parathion recovered to less than 10% after 3 to 4 weeks.
- Taxon
- RiceOryza sativat0
- Treatment
- propanile1
- Outcome
- injurye2
- Direction
- decreaseinferrede2
- Value
- less than 10%e2
- Qualifier
- after 3 to 4 weekse2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa)”
e1“In all experiments, propanil, both alone and with methyl parathion, resulted in 20 to 30% leaf burn during the first week after treatment”
e2“with rapid recovery to less than 10% injury after 3 to 4 weeks”
Claim · model-written summary
In field experiments, rice yields with propanil were not reduced below those of untreated controls.
- Taxon
- RiceOryza sativat0
- Treatment
- propanile1
- Outcome
- yieldse3
- Direction
- not reducede3
- Comparator
- untreated controlse3
- Setting
- field experimentse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa)”
e1“In all experiments, propanil, both alone and with methyl parathion, resulted in 20 to 30% leaf burn during the first week after treatment”
e3“In field experiments, yields were not reduced in the treated rice below that in the untreated controls”
Claim · model-written summary
In controlled-environment experiments, rice was not injured more by propanil plus methyl parathion than by propanil alone after 2 to 4 weeks.
- Taxon
- RiceOryza sativat0
- Treatment
- propanil plus methyl parathione4
- Outcome
- injurede4
- Direction
- no_changeinferrede4
- Qualifier
- after 2 to 4 weekse4
- Comparator
- propanil alonee4
- Setting
- controlled-environment experimentse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa)”
e4“In controlled-environment experiments, rice was not injured by propanil plus methyl parathion more than by propanil alone after 2 to 4 weeks”
Claim · model-written summary
Rice was injured more under high temperature, low humidity and low soil moisture than under low temperature, high humidity and flooded soil.
- Taxon
- riceOryza sativat0
- Treatment
- high (40 C) temperature, low (40%) RH, and low (near the wilting point) soil moisturee5
- Outcome
- injurede5
- Direction
- injured moree5
- Comparator
- low (30 C) temperature, high (100%) RH, and flooded soile5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice (Oryza sativa)”
e5“Both treated and untreated rice were injured more by the environmental conditions of high (40 C) temperature, low (40%) RH, and low (near the wilting point) soil moisture than by low (30 C) temperature, high (100%) RH, and flooded soil”
The same questions in other papers
propanil · yield · Oryza sativa (rice)Results differ
10 papers in the same direction as this paper · 29 in the opposite direction
- no effect
- positive
- positive
36 papers more in this group
See all 40 papers →propanil · crop injury · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- no effect
- negative
- negative
3 papers more in this group
See all 7 papers →soil water · crop injury · Oryza sativa (rice)Results agree
2 papers in the same direction as this paper
- negative
- no effect
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.