Agriculture Reference
In-Depth Information
below the
DAW
rangeandsuctionsgreaterthan400kPa),shootgrowthstopsand
thetipsandtendrilsmaydie.Lateintheseason,water-stressedbasalleavesbecome
yellow and may develop necrotic areas toward the edges. Early senescence and leaf
fall begin at the base of a shoot and progress toward the tip. Figure 4.15 shows an
exampleofwater-stressedvinesinlatesummerintheNaparegion,California.
Figure 4.14
Ten-year-oldShirazvinesshowingvigorousgrowthundersubsurface
dripirrigationintheMcLarenValeregion,SouthAustralia.
Figure 4.15
CabernetSauvignonvinesshowingsignsofseverewaterstress(leafdeath)inlate
summerintheNaparegion,California.Seecolorinsert.
