COMMERCIAL PRODUCTION OF WHEAT-GRAIN IRRIGATED WITH MUNICIPAL WASTE-WATER AND PUMP WATER

Experiments were conducted in southern Arizona to study the effects of irrigating wheat with mixture of pump water and waste water and with pump water alone on wheat growth, grain yield, grain quality, soil properties, and irrigation water quality. In small plot research, wheat irrigated with the pump water-waste water mixture produced taller plants, more heads per unit area, heavier seeds, higher grain yields, and higher straw yields than did wheat grown with only pump water. When large fields were compared, wheat grown with the pump water-waste water mixture had taller plants, more lodging, lower grain volume-weights, and higher grain yields than did wheat produced with pump water.