Article Figures & Data
Tables
Area Good-Fair Serious decline or dead Total trees %Serious decline or dead 1988 Near irrigation 24 6 30 20.0 Non-irrigated 57 78 135 57.8 X2 = 12.55 P < .01 1992 Near irrigation 22 8 30 26.7 Non-irrigated 37 98 135 72.6 X=2 20.58 P <.01 Irrigation No new shoot growth New shoot growth Total trees % New growth 4 weeks after irrigation Drip 4 8 12 66.7 None 12 0 12 0 X2 = 9.19 P <.01 5 weeks after irrigation Drip 1 11 12 91.7 None 10 2 12 16.7 X2 = 10.74 P <.01 Change in Vigor from 1988 to 1992 Improved growth No change or decline Total trees % no change Drip 10 2 12 16.7 None 1 11 12 91.7 X2 = 10.74 P <.01