Abstract
Twelve sweet corn (Zea mays L. var. rugosa Bonaf.) cultivars were tested for response to nicosulfuron at rates of 0, 18, 36, and 72 g a.i./ha. Weight of marketable ears indicated that five cultivars were intolerant to the herbicide. Three of the cultivars that were intolerant contained the shrunken-2 endosperm mutant (sh) and two contained the sugary enhancer endosperm mutant (se). Cultivars that were most tolerant of nicosulfuron contained the sh, gene. Incorporation of terbufos insecticide before planting led to decreased marketable yield when nicosulfuron was applied at 36 g·ha in all cultivars tested. Chlorpyrifos insecticide incorporated before planting did not affect tolerance to nicosulfuron. Neither soil-applied insecticide affected yield when nicosulfuron was not applied. Chemical names used: 2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfony]-N,N-dimethyl-3-pyridinecarboxamide (nicosulfuron); S-[[(1,1-dimethylethyl)thio]methyl] O,O-diethylphosphorodithioate (terbufos); O,O-diethyl O-(3,5,6-trichloro-2-pyridyl)phosphorothioate (chlorpyrifos).
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Claims 7
Claim · model-written summary
Five sweet corn cultivars were intolerant to nicosulfuron by marketable ear weight.
Verbatim
e0“Weight of marketable ears indicated that five cultivars were intolerant to the herbicide.”
t0“Sweet Corn”
Claim · model-written summary
Three intolerant cultivars carried the shrunken-2 endosperm mutant.
Not reportedDirection
Verbatim
e0“Three of the cultivars that were intolerant contained the shrunken-2 endosperm mutant (sh)”
t0“Sweet Corn”
Claim · model-written summary
Two intolerant cultivars carried the sugary enhancer endosperm mutant.
Not reportedDirection
Verbatim
e0“two contained the sugary enhancer endosperm mutant (se).”
e1“Weight of marketable ears indicated that five cultivars were intolerant to the herbicide.”
t0“Sweet Corn”
Claim · model-written summary
The most nicosulfuron-tolerant cultivars contained the sh gene.
Verbatim
e0“Cultivars that were most tolerant of nicosulfuron contained the sh, gene.”
t0“Sweet Corn”
Claim · model-written summary
Preplant terbufos reduced marketable yield with nicosulfuron at 36 g·ha in all cultivars.
- Taxon
- Sweet Cornt0
- Treatment
- Incorporation of terbufos insecticide before plantinge0
- Outcome
- marketable yielde0
- Direction
- decreasede0
- Qualifier
- when nicosulfuron was applied at 36 g·hae0
Not reportedComparator
Verbatim
e0“Incorporation of terbufos insecticide before planting led to decreased marketable yield when nicosulfuron was applied at 36 g·ha in all cultivars tested.”
t0“Sweet Corn”
Claim · model-written summary
Preplant chlorpyrifos did not affect nicosulfuron tolerance.
- Taxon
- Sweet Cornt0
- Treatment
- Chlorpyrifos insecticide incorporated before plantinge0
- Outcome
- tolerance to nicosulfurone0
- Direction
- did not affecte0
Not reportedComparator
Verbatim
e0“Chlorpyrifos insecticide incorporated before planting did not affect tolerance to nicosulfuron.”
t0“Sweet Corn”
Claim · model-written summary
Neither soil-applied insecticide affected yield without nicosulfuron.
- Taxon
- Sweet Cornt0
- Treatment
- soil-applied insecticidee0
- Outcome
- yielde0
- Direction
- Neither soil-applied insecticide affectede0
- Qualifier
- when nicosulfuron was not appliede0
Not reportedComparator
Verbatim
e0“Neither soil-applied insecticide affected yield when nicosulfuron was not applied.”
t0“Sweet Corn”