Abstract
Thompson Seedless vines were treated for three years with various levels of nitrogen fertilizer. The vineyard had not been fertilized for over seven years preceding. The clarified grape juice was analyzed for various components. The rates of fermentation, concentration of esters, and wine quality were dependent on the level of nitrogen fertilization. Fertilization with 112 kg N/ha (100 lb-N/acre) was sufficient for the juice to have a rapid fermentation and the wine to be of good quality. Juice from vines not fertilized fermented more slowly, resulted in wines of poorer quality, and was deficient in a number of chemical components.
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Claims 5
Claim · model-written summary
Fermentation rates, ester concentration and wine quality depended on the level of nitrogen fertilization of the vines.
- Treatment
- nitrogen fertilizatione0
- Outcome
- rates of fermentation, concentration of esters, and wine qualitye0
VitisNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Thompson Seedless Grapevines”
e0“The rates of fermentation, concentration of esters, and wine quality were dependent on the level of nitrogen fertilization”
Claim · model-written summary
Fertilization with 112 kg N/ha (100 lb-N/acre) was sufficient for rapid fermentation of the juice and good wine quality.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Thompson Seedless Grapevines”
e0“Fertilization with 112 kg N/ha (100 lb-N/acre) was sufficient for the juice to have a rapid fermentation and the wine to be of good quality”
Claim · model-written summary
Juice from vines that were not fertilized fermented more slowly.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Thompson Seedless Grapevines”
e0“Juice from vines not fertilized fermented more slowly”
Claim · model-written summary
Juice from vines that were not fertilized resulted in wines of poorer quality.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Thompson Seedless Grapevines”
e0“Juice from vines not fertilized fermented more slowly, resulted in wines of poorer quality”
Claim · model-written summary
Juice from vines that were not fertilized was deficient in a number of chemical components.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Thompson Seedless Grapevines”
e0“Juice from vines not fertilized fermented more slowly, resulted in wines of poorer quality, and was deficient in a number of chemical components”
The same questions in other papers
fertilization · quality: general · VitisPositive and negative results
9 papers in the same direction as this paper · 28 in the opposite direction
- positive
- positive
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See all 38 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.