Evaluating the Potential of High-Resolution Visible Remote Sensing to Detect Shiraz Disease in Grapevines

Figure 2

Symptoms of SD-infected Shiraz. (a) Restricted spring growth with delayed bud burst in Shiraz; (b) Shiraz canopies fully developed in midsummer at fruit set (EL-27); (c) canes of infected Shiraz show a lack of lignification at véraison (EL-35); and (d) red leaves remain on infected Shiraz vines while healthy vines drop all leaves during the dormant season.

(a)

(b)

(c)

(d)