Jonathan A. Sisson

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Russet Burbank and Shepody potatoes were grown with at-planting nitrogen fertilizer rates varying from 0 to 270 kg ha−1 following small grains and red clover. Petiole samples were collected from the 4th and 5th leaflets at four to six dates each during the 1986 to 1989 growing seasons. The samples were dried and analyzed for NO 3 − N content. Petiole NO 3 −(More)
Russet Burbank and Shepody potatoes were grown with at-planting N fertilizer rates ranging from 0 to 270 kg ha−1 during 1986 through 1989. Experiments were conducted each year following small grains and red clover. Total yields and tuber size were strongly increased by N on most sites where potatoes followed small grains. Specific gravities declined with(More)
Russet Burbank and Shepody potatoes were grown with the following four nitrogen treatments: 1) 90 kg ha−1 at planting; 2) 180 kg ha−1 at planting; 3) 90 kg ha−1 at planting followed by an additional 90 kg ha−1 side-dressed after tuber initiation; or 4) 90 kg ha−1 at planting followed by an additional 45 kg ha−1 sidedressing. When compared to the 90 kg ha−1(More)
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