Abstract
Two field studies were conducted to determine the effects of soil fumigation on the response of Russet Burbank potatoes (Solanum tuberosum L.) to NH4-N or NH4NO3 fertilizers. In one study fumigation increased yields but N source had no effect. In the other study fumigation had no effect but NH4-N provided higher yields than NH4NO3. Microbial studies indicated that although populations of nitrifying bacteria were initially altered by fumigation, nitrification rates were similar to those in non-fumigated soil. In a controlled environment study in which potatoes were grown in fumigated field soil, neither N source nor fumigation had any effect on growth or yield. These studies indicated that fumigation had no effect on the response of potatoes to NH4-N or NH4NO3 fertilizers.
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Scientific Paper No. 7252. Project 0322. College of Agriculture and Home Economics Research Center, Washington State University, Pullman, WA 99164-6242. The authors gratefully acknowledge the Washington State Potato Commission for funding this project.
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Davis, J.M., Loescher, W.H., Hammond, M.W. et al. Response of Russet Burbank potatoes to soil fumigation and nitrogen fertilizers. American Potato Journal 63, 71–79 (1986). https://doi.org/10.1007/BF02853685
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DOI: https://doi.org/10.1007/BF02853685