Table 6

Effects of cover-crop mixes on vine leaf water potential during three years.

Vine leaf water potential (MPa)
TreatmentJune 1998July 1998May 1999June 2000
aMeans followed by the same letter in each column are not significantly different (LSD, p < 0.05).
Native grass−0.92aa−1.14ab−0.66a−0.53a
Green manure−0.86ab−1.16ab−0.68a−0.59a
Clovers−0.91a−1.22a−0.69a−0.56a
Cereals−0.82b−1.08b−0.69a−0.57a
Disked−0.82b−1.11b−0.68a−0.56a