All plots receive at least 1.5cm/week of water in April, May
and October and 2.5 cm/week in June through September. If the plots receive
this water from natural rainfall, then no supplemental watering is needed.
When watering is needed, it is done using a system of hoses set up in the
field. A black irrigation pipe, 3 inches in diameter, is hooked up to the
pump. This extends out to the E026 area where the 3-inch hose is divided into
two 2-inch hoses. One part goes toward the E026 (and E071) plots (the other
toward E055, E069, E070). From this hose, several
regular garden hoses are connected. Gardena Excellent Oscillating Sprinklers,
model 6968, are attached to these hoses. These sprinklers are purchased at
Sears and made at Gardena, Inc., 6031 Culligan Way, Minnetonka, MN 55345.
Three or four hoses/sprinklers are used at one time. Any more than this
reduces the water pressure enough so the sprinklers will not work. The
sprinklers are rotated in order to reach all of the plots.