Impact of shoot-thinning time on growth and yield components of Pinot noir, 2001–2002.
Yield (kg/vine) | Clusters/vine | Cluster wt (g) | Berries/cluster | Berry wt (g) | ||||||
---|---|---|---|---|---|---|---|---|---|---|
Treatment | 2001 | 2002 | 2001 | 2002 | 2001 | 2002 | 2001 | 2002 | 2001 | 2002 |
Control | 3.1aa | 3.4a | 43a | 33ab | 73.1 | 106.9ab | 61ab | 81 | 1.20f | 1.32a |
09–12 | 2.8abc | 3.3ab | 33c | 31bc | 86.5 | 108.6ab | 75a | 86 | 1.22d | 1.27d |
15 | 2.7abc | 3.6a | 35bc | 35a | 77.6 | 101.3b | 61ab | 83 | 1.27b | 1.22e |
19–21 | 3.0ab | 3.5a | 37b | 33ab | 80.8 | 108.2ab | 65ab | 86 | 1.24c | 1.27d |
25–27 | 2.5cb | 3.4ab | 35bc | 30bc | 71.8 | 112.2a | 57b | 88 | 1.28a | 1.29c |
29–31 | 2.6bc | 3.0b | 35bc | 28c | 74.6 | 108.2ab | 62ab | 83 | 1.22d | 1.30b |
Significant Fc | * | ns | **** | *** | ns | * | * | ns | **** | **** |
Trendc,d | ns | **q | ns | **l,q | ns | ns | *l | ns | ****l,q | ****l,q |
Control vs thinningc | ** | ns | **** | ns | ns | ns | ns | ns | **** | **** |
Shoots | Periderm (# canes/category) | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Wt of cane | |||||||||||
<3 mature | 4–9 mature | >10 mature | prunings | ||||||||
Per vine | Per m row | internodes | internodes | internodes | (kg/vine) | ||||||
Treatment | 2001 | 2002 | 2001 | 2002 | 2001 | 2002 | 2001 | 2002 | 2001 | 2002 | 2002e |
aMeans followed by different letters are significantly different, p ≤ 0.05, Duncan’s multiple range test. | |||||||||||
bBoldfaced data are significantly different from the control according to Dunnett’s t test. | |||||||||||
c*, **, ***, ****, and ns indicate significance at p ≤ 0.05, 0.01, 0.001, 0.0001, and not significant, respectively. | |||||||||||
dq, l: quadratic and linear trends, respectively. | |||||||||||
eVines were pruned by the grower in error following the 2001 season. | |||||||||||
Control | 26aa | 22a | 18.6a | 15.6a | 6.3a | 2.7a | 11.6a | 7.2a | 8.1ab | 11.9a | 0.58a |
09–12 | 21cb | 19b | 14.9c | 13.9b | 2.9cd | 2.1b | 9.4b | 6.1ab | 8.6a | 11.2ab | 0.57ab |
15 | 21c | 19b | 14.7c | 13.5b | 2.6d | 2.0b | 9.0b | 6.5a | 9.0a | 10.4b | 0.56ab |
19–21 | 23b | 19b | 16.2b | 13.6b | 4.7b | 2.1b | 9.6b | 5.3bc | 8.5a | 11.7a | 0.55ab |
25–27 | 21c | 18b | 15.1c | 13.0b | 3.7c | 2.2b | 9.6b | 5.0c | 7.9ab | 11.1ab | 0.53ab |
29–31 | 20c | 18b | 14.6c | 13.2b | 3.5c | 2.9a | 9.6b | 5.2bc | 7.3b | 10.4b | 0.48b |
Significant Fc | **** | **** | **** | **** | **** | *** | *** | **** | * | ** | * |
Trendc,d | **q | *l | **q | *l | **l,q | ***l,**q | ns | **l | **l | ns | *l |
Control vs thinningc | **** | **** | **** | **** | **** | ** | **** | *** | ns | * | ns |