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Irrigation and Nitrogen Management Effects on Potato Yield, Tuber Quality, and Nitrogen Uptake

^a Dep. of Soil, Water, and Climate, Univ. of Minnesota, St. Paul, MN 55108 USA
^b Dep. of Agric. Engineering, North Dakota State Univ., Fargo, ND 58105 USA

View larger version (27K): [in a new window]   Fig. 1 Plot plan of the field study. The upper portion shows the entire plot area with irrigation blocks. The bottom overlay shows specific treatments that were randomized in each irrigation block

View larger version (21K): [in a new window]   Fig. 2 Variation in growing degree days (base temperature = 7.2°C) as a function of time during the 1994 and 1995 growing seasons. Bottom graph shows a portion of the entire growing season thought responsible for higher yields in 1994 than in 1995