Articles
TRIALS WITH ‘SANGIOVESE’ GRAFTED ON SEVERAL GRAPEVINE ROOTSTOCKS IN TWO DIFFERENT AREAS OF TUSCANY
Article number
617_11
Pages
73 – 83
Language
English
Abstract
Researches were conducted in the Morellino di Scansano D.O.C. area, province of Grosseto and in the area of D.O.C.G. Chianti Classico, province of Florence.
The experimental vineyards were set up in 1993 and 1994 in Chianti Classico and in the Morellino di Scansano area respectively with Sangiovese grapevines grafted onto twelve rootstocks (101-14Mgt, 1103P, 110R, 140Ru, 161-49, 3309C 41B, 420A, 775P, 779P, K5BB, SO4)., In addition Gravesac was planted in the first zone and eight more rootstocks (‘Rupestris Du Lot’, ‘157-11′, ’34 EM’, ‘K125AA’, 225Ru, ’17-37′, ‘Fercal’, ‘1045P)’ in Chianti Classico.
Both soils were non calcareous.
In Chianti Classico the soil was a sandy-clay (pH 8.0) while in the ‘Morellino di Scansano’ area the soil was a clay loam sandy (pH 6.9). This latter area was characterised by warmer and dry conditions during summer.
In the ‘Morellino di Scansano’ area a less vine vigour was induced by 41B, ‘Gravesac and SO4 while 779P, 161-49 and 140Ru showed to increase plant vigour.
The yield was not strictly correlated to vigour.
The more productive vines were grafted onto 775P, followed by 779P, 101-14, 110R, 140Ru and K5BB’, while ’41B’ induced lower berry size and productivity and elevated sugar levels also maintaining good acidity, low pH, medium anthocyanin content of the berry.
Berry sugar accumulation was the highest with 101-14, 420A and 110R, and lower with K5BB. The berry anthocyanin and polyphenol richness were positively influenced by SO4and 779P and to a lesser extent by 420A, 101-14, 110R, 161-49 and 140Ru, while 775P K5BB, Gravesac, and 1103P induced lower levels.
In the Chianti Classico area ’41B and 420A determined low vine vigour, while Rupestris Du Lot significantly decreased yield.
These results showed non-negligible differences of performances among the various rootstocks according to soil and climatic conditions.
The best performances were given by 110R, which was the most homogeneous in both ambient.
The experimental vineyards were set up in 1993 and 1994 in Chianti Classico and in the Morellino di Scansano area respectively with Sangiovese grapevines grafted onto twelve rootstocks (101-14Mgt, 1103P, 110R, 140Ru, 161-49, 3309C 41B, 420A, 775P, 779P, K5BB, SO4)., In addition Gravesac was planted in the first zone and eight more rootstocks (‘Rupestris Du Lot’, ‘157-11′, ’34 EM’, ‘K125AA’, 225Ru, ’17-37′, ‘Fercal’, ‘1045P)’ in Chianti Classico.
Both soils were non calcareous.
In Chianti Classico the soil was a sandy-clay (pH 8.0) while in the ‘Morellino di Scansano’ area the soil was a clay loam sandy (pH 6.9). This latter area was characterised by warmer and dry conditions during summer.
In the ‘Morellino di Scansano’ area a less vine vigour was induced by 41B, ‘Gravesac and SO4 while 779P, 161-49 and 140Ru showed to increase plant vigour.
The yield was not strictly correlated to vigour.
The more productive vines were grafted onto 775P, followed by 779P, 101-14, 110R, 140Ru and K5BB’, while ’41B’ induced lower berry size and productivity and elevated sugar levels also maintaining good acidity, low pH, medium anthocyanin content of the berry.
Berry sugar accumulation was the highest with 101-14, 420A and 110R, and lower with K5BB. The berry anthocyanin and polyphenol richness were positively influenced by SO4and 779P and to a lesser extent by 420A, 101-14, 110R, 161-49 and 140Ru, while 775P K5BB, Gravesac, and 1103P induced lower levels.
In the Chianti Classico area ’41B and 420A determined low vine vigour, while Rupestris Du Lot significantly decreased yield.
These results showed non-negligible differences of performances among the various rootstocks according to soil and climatic conditions.
The best performances were given by 110R, which was the most homogeneous in both ambient.
Authors
G. Scalabrelli, G. Ferroni, C. D’Onofrio, G. Di Collalto, F. Venerini
Keywords
Vitis vinifera, vine performances, grapevine, quality, yield, vigour, production
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