I also irrigated cotton, alfalfa and chile peppers. The cotton and chile peppers required a bent metal pipe to siphon the water from the irrigation ditch to the row. The alfalfa you used a tarp or big metal stop like a giant fat cleaver to stop the water and dig a opening to allow the water to flood the field. you stared on the high side and worked you way lower increments.
Figures don't lie, But Liars figure Assumption is the mother of mistakes
