In recent years planting density has been considered to be a major factor influencing production quality. The "Chianti Classico 2000" Project has thus designed a study to investigate the relation between planting density and grapevine vegetative-productive behavior, with particular reference to grape quality. Research was conducted in two experimental vineyards established in 1989 with "Sangiovese", clone RIO on 420 A and 1103 P, at the estates of hole and Olena (Barberino Val d'Elsa -Firenze) and Badia a Coltibuono (Gaiole in CManti - Siena). Grapevines were spaced at various distances in order to obtain 4 planting densities, resepctively 2,564, 5,000, 7,575 and 9,803 grapevines/ha, and were trained to horizontal spurred cordon, staked up at roughly 60 cm from the ground. Bud load was roughly 30,000 buds/ha, corresponding to the value generally adopted in the Chianti Classico area. Results obtained in six years of observations performed on vegetative, productive and phenologic parameters showed that the higher planting densities did not offer substantial advantages in vegetative-pro-ductive behavior and grape quality as compared to lower densities. This could be due to impairment of balance on account of a low number of buds per vine. Results concerning rootstocks showed that 1103P induced greater vigor than 420 A. Overall, the density of 5,000 grapevines/ha achieved the most balanced vine development and more restrained production, in line with general recommendations for Chianti Classico production.
Effetto della densità di piantagione sull'attività vegeto-produttiva del "Sangiovese" nel Chianti Classico
SCALABRELLI, GIANCARLO;
2001-01-01
Abstract
In recent years planting density has been considered to be a major factor influencing production quality. The "Chianti Classico 2000" Project has thus designed a study to investigate the relation between planting density and grapevine vegetative-productive behavior, with particular reference to grape quality. Research was conducted in two experimental vineyards established in 1989 with "Sangiovese", clone RIO on 420 A and 1103 P, at the estates of hole and Olena (Barberino Val d'Elsa -Firenze) and Badia a Coltibuono (Gaiole in CManti - Siena). Grapevines were spaced at various distances in order to obtain 4 planting densities, resepctively 2,564, 5,000, 7,575 and 9,803 grapevines/ha, and were trained to horizontal spurred cordon, staked up at roughly 60 cm from the ground. Bud load was roughly 30,000 buds/ha, corresponding to the value generally adopted in the Chianti Classico area. Results obtained in six years of observations performed on vegetative, productive and phenologic parameters showed that the higher planting densities did not offer substantial advantages in vegetative-pro-ductive behavior and grape quality as compared to lower densities. This could be due to impairment of balance on account of a low number of buds per vine. Results concerning rootstocks showed that 1103P induced greater vigor than 420 A. Overall, the density of 5,000 grapevines/ha achieved the most balanced vine development and more restrained production, in line with general recommendations for Chianti Classico production.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
