Table 11

Impact of shoot-thinning time and double pruning on cluster and leaf exposure to sunlight determined by point quadrat analysis on Cabernet franc, 2002.

LeavesClusters
LeafSunSunPartial sun
layerexposedShadedexposedexposedShaded
Treatmentnumber(%)(%)(%)(%)(%)
aMeans followed by different letters are significant at p ≤ 0.05, Duncan’s multiple range test.
bFigures in bold type differ significantly from control, Dunnett’s t test, p < 0.05.
c** and *** indicate significance at p ≤ 0.01 and 0.001, respectively. l: linear trend. Control and double-prune treatments not included in model statement for determining trends.
Control2.6aa63.2d36.8a30.4c64.0a5.6a
09–122.5a67.5c32.5b33.4c61.7ab4.9a
152.2bb74.2ab25.8cd34.6c61.7ab3.7ab
19–212.3b68.3c31.7b41.8b55.8b2.4ab
25–272.0c75.6ab24.4cd42.7b56.1b1.2b
29–311.9d77.8a22.2d50.9a48.3c0.8b
Double prune2.3b73.4b26.6c34.2c63.3ab2.5ab
Significance, trendc***l***l***l***l***l**l