Abstract
Four field trials were conducted at Vicua Experimental Center (3002' S, 7044' W) located in the Coquimbo Region, Chile, over four seasons, 2002-2003 to 2005-2006, to determine the influence of 10 rootstocks (Freedom, Harmony, Saint George, Salt Creek, SO4, 1613C, 1103P, 99R, 110R, 140Ru, as well as own roots vines) on nutrient content in petioles of vars. Flame Seedless, Thompson Seedless, Superior Seedless and Red Globe grapevines (Vitis vinifera L.). The trials took place at a site that had previously planted to vineyard. The experimental design was a randomized complete block with four replicates. Petioles opposite to clusters were taken at bloom as samples and analyzed for total N, P and K content. Significant differences in nutrient levels due to rootstocks were found in all varieties. Rootstocks increased the levels of petiole nutrients (except P) over the values usually reported in literature for table grapes. Vines grafted onto the rootstock 'Salt Creek' had significantly higher petiole N and P content than those on their own roots vines. Total N level increased 67% in 'Flame Seedless', 77% in 'Red Globe', 33% in 'Thompson Seedless' and 8.5% in 'Superior Seedless'. On the other hand, the petiole P level doubled in all varieties by using 'Salt Creek' as rootstock. Potassium status was also affected by rootstocks. 'Harmony' and '1613C' showed higher K levels by at least 60% in vars. Flame Seedless, Red Globe and Thompson Seedless as compared to plants grown on their own roots. The present investigation demonstrates that rootstocks may have a considerable effect on grapevine nutrition.
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Claims 12
Claim · model-written summary
Rootstocks produced significant nutrient-level differences in all four grape varieties.
Not reportedComparatorDirection
Verbatim
e0“Significant differences in nutrient levels due to rootstocks were found in all varieties”
t0“Grape”
Claim · model-written summary
Rootstocks increased petiole nutrient levels except phosphorus over literature values.
Verbatim
e0“Rootstocks increased the levels of petiole nutrients (except P) over the values usually reported in literature for table grapes”
Claim · model-written summary
Salt Creek grafting significantly increased petiole nitrogen versus own roots.
Verbatim
e0“Vines grafted onto the rootstock 'Salt Creek' had significantly higher petiole N and P content than those on their own roots vines”
t0“Grape”
Claim · model-written summary
Salt Creek grafting significantly increased petiole phosphorus versus own roots.
Verbatim
e0“Vines grafted onto the rootstock 'Salt Creek' had significantly higher petiole N and P content than those on their own roots vines”
t0“Grape”
Claim · model-written summary
Salt Creek increased petiole nitrogen in 'Flame Seedless' by 67%.
Verbatim
e0“Total N level increased 67% in 'Flame Seedless', 77% in 'Red Globe', 33% in 'Thompson Seedless' and 8.5% in 'Superior Seedless'”
e1“On the other hand, the petiole P level doubled in all varieties by using 'Salt Creek' as rootstock”
e2“as compared to plants grown on their own roots”
t0“Grape”
Claim · model-written summary
Salt Creek increased petiole nitrogen in 'Red Globe' by 77%.
Verbatim
e0“Total N level increased 67% in 'Flame Seedless', 77% in 'Red Globe', 33% in 'Thompson Seedless' and 8.5% in 'Superior Seedless'”
e1“On the other hand, the petiole P level doubled in all varieties by using 'Salt Creek' as rootstock”
e2“as compared to plants grown on their own roots”
t0“Grape”
Claim · model-written summary
Salt Creek increased petiole nitrogen in 'Thompson Seedless' by 33%.
Verbatim
e0“Total N level increased 67% in 'Flame Seedless', 77% in 'Red Globe', 33% in 'Thompson Seedless' and 8.5% in 'Superior Seedless'”
e1“On the other hand, the petiole P level doubled in all varieties by using 'Salt Creek' as rootstock”
e2“as compared to plants grown on their own roots”
t0“Grape”
Claim · model-written summary
Salt Creek increased petiole nitrogen in 'Superior Seedless' by 8.5%.
Verbatim
e0“Total N level increased 67% in 'Flame Seedless', 77% in 'Red Globe', 33% in 'Thompson Seedless' and 8.5% in 'Superior Seedless'”
e1“On the other hand, the petiole P level doubled in all varieties by using 'Salt Creek' as rootstock”
e2“as compared to plants grown on their own roots”
t0“Grape”
Claim · model-written summary
Salt Creek doubled petiole phosphorus in all four varieties.
Verbatim
e0“the petiole P level doubled in all varieties by using 'Salt Creek' as rootstock”
e1“as compared to plants grown on their own roots”
t0“Grape”
Claim · model-written summary
Rootstocks affected potassium status.
Not reportedComparatorDirection
Verbatim
e0“Potassium status was also affected by rootstocks”
t0“Grape”
Claim · model-written summary
'Harmony' produced at least 60% higher petiole potassium in three varieties than own roots.
Verbatim
e0“'Harmony' and '1613C' showed higher K levels by at least 60% in vars. Flame Seedless, Red Globe and Thompson Seedless as compared to plants grown on their own roots”
t0“Grape”
Claim · model-written summary
'1613C' produced at least 60% higher petiole potassium in three varieties than own roots.
Verbatim
e0“'Harmony' and '1613C' showed higher K levels by at least 60% in vars. Flame Seedless, Red Globe and Thompson Seedless as compared to plants grown on their own roots”
t0“Grape”
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See all 11 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.