maximum irrigation. Predicted yield without irrigation was 16.1

tons/acre or 1.15 tons/acre-inch of rainfall during the growing

season. Daily irrigation yield was greater than MWF irrigation

yield at 75% of maximum irrigation (P < 0.05) using a single-

degree-of-freedom comparison.

 Total Yield (Tons/Acre)
 30
 Irrigation Timing
 25 Irrig. Applied Dally
 Irrig. Applied MWF
 20

 15-

 10 -




 6.5 13 19.4 26.9
 Total Irrigation Use (Inches)

Figure 5. Total yield by irrigation treatments in exp. #2.


 Response of tomatoes in Exp-2 to irrigation was not

significant for harvests 1, 2, and 4 but was strongly expressed in

the third harvest (Fig. 6). The MWF irrigation schedule produced

a positive linear response to irrigation amount at the third

harvest, Y = 6.59 + 0.0402W, r2 = 0.218, P < 0.10), while the daily

irrigation schedule produced a quadratic response (Y = 0.75 +

0.256W-0.00144W2, r2 = 0.629, P < 0.01). Daily irrigation was more

effective than MWF irrigation in Exp-2.