Abstract
Dormant two-, three-, and four-year-old Thompson Seedless and Cabernet Sauvignon vines and two-year-old Grenache vines grown at the University of California, Davis, were treated with either 1% or 2% H2CN2 one day after pruning and compared to untreated control vines. The average number of days to initial budburst after treatment of dormant canes with H2CN2 was two to four days less (p < 0.05%) than untreated vines for two-year-old Thompson Seedless and four-year-old Cabernet Sauvignon vines. Hydrogen cyanamide at either 1% or 2% significantly increased the percentage budburst on the basal two-thirds portion of canes of all varieties and age groups. All portions of canes from four-year-old Cabernet Sauvignon vines treated with 2% H2CN2 had greater percentage budburst than control vines. Hydrogen cyanamide applied at a rate of 1% induced significantly (p < 0.05) greater percent budburst on two-year-old Grenache vines compared to a rate of 2%, whereas the latter treatment was most effective in inducing earlier budbreak on canes of Thompson Seedless and Cabernet Sauvignon vines.
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Claims 7
Claim · model-written summary
H2CN2 shortened the time to initial budburst by two to four days relative to untreated vines in two-year-old Thompson Seedless.
Verbatim
e0“The average number of days to initial budburst after treatment of dormant canes with H2CN2 was two to four days less (p < 0.05%) than untreated vines for two-year-old Thompson Seedless and four-year-old Cabernet Sauvignon vines”
Claim · model-written summary
H2CN2 shortened the time to initial budburst by two to four days relative to untreated vines in four-year-old Cabernet Sauvignon.
Verbatim
e0“The average number of days to initial budburst after treatment of dormant canes with H2CN2 was two to four days less (p < 0.05%) than untreated vines for two-year-old Thompson Seedless and four-year-old Cabernet Sauvignon vines”
Claim · model-written summary
Hydrogen cyanamide at 1% or 2% significantly increased percentage budburst on the basal two-thirds of canes in all varieties and age groups.
- Taxon
- Grapet0
- Organ / stage
- basal two-thirds portion of canese0
- Treatment
- Hydrogen cyanamide at either 1% or 2%e0
- Outcome
- percentage budburste0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“Young Grape Vineyards”
e0“Hydrogen cyanamide at either 1% or 2% significantly increased the percentage budburst on the basal two-thirds portion of canes of all varieties and age groups”
Claim · model-written summary
All portions of canes of four-year-old Cabernet Sauvignon vines treated with 2% H2CN2 had greater percentage budburst than control vines.
Verbatim
e0“All portions of canes from four-year-old Cabernet Sauvignon vines treated with 2% H2CN2 had greater percentage budburst than control vines”
Claim · model-written summary
1% hydrogen cyanamide induced significantly greater percent budburst than 2% on two-year-old Grenache vines.
Verbatim
e0“Hydrogen cyanamide applied at a rate of 1% induced significantly (p < 0.05) greater percent budburst on two-year-old Grenache vines compared to a rate of 2%”
Claim · model-written summary
The 2% rate was the most effective in inducing earlier budbreak on canes of Thompson Seedless vines.
Not reportedComparator
Verbatim
e0“a rate of 2%, whereas the latter treatment was most effective in inducing earlier budbreak on canes of Thompson Seedless and Cabernet Sauvignon vines”
Claim · model-written summary
The 2% rate was the most effective in inducing earlier budbreak on canes of Cabernet Sauvignon vines.
Not reportedComparator
Verbatim
e0“a rate of 2%, whereas the latter treatment was most effective in inducing earlier budbreak on canes of Thompson Seedless and Cabernet Sauvignon vines”
The same questions in other papers
cyanamide · phenology · VitisPositive and negative results
14 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- positive
- no effect
- no effect
13 papers more in this group
See all 17 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.