Effects of irrigation and tillage practices on yield of potato under high production conditions in the Pacific Northwest

• DOI: 10.1081/css-120004293
• Publication Date: 2002-10-14T16:52:54Z
• Authors: A. K. Alva; T. Hodges; R. A. Boydston; H. P. Collins
• Keywords: Irrigation scheduling

The soil and climate conditions prevalent in the Pacific Northwest region are favorable for production of high potato (Solanum tuberosum L.) yields. Much this occurs on coarse, low organic matter, sandy soils which can be subject to wind water erosion, excessive leaching soluble agrichemicals below root zone, particularly when irrigation is not managed adequately. Tuber quality adversely impacted potatoes stress. Therefore, optimal scheduling important support good tubers minimize potential adverse impacts quality. Effects two regimes three tillage practices varieties were studied under four years rotation with either corn (Zea mays or wheat (Trilicum aestivum L.). In out years, as compared replenish full evapotranspiration (ET), deficit (85% ET) decreased total tuber yield by 8 11% 10 17%, U.S. No. 1 5 17% 16 25%, Russet Burbank Hilite cultivars, respectively. Tillage treatments evaluated (i) conventional including raised ridges dammer-dike; (ii) optimal, i.e., lower depth shallow furrow; (iii) reduced tillage, flat planting. During first study, effects non-significant well both cultivars. On third year, was significantly planting treatment that other treatments. This study demonstrated coarse textured adequate infiltration, and/or dammer-diking may benefit production.