Summary
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1.
Dowspray 66 Improved killed potato vines more rapidly than either Handy Killer or Sinox General.
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2.
The stage of maturity did not influence the rate of kill with Dowspray 66, but more mature plants were killed more rapidly by Sinox General and Handy Killer.
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3.
The incidence of stem-end discoloration varied inversely with the number of days required to kill the plants.
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4.
There was a marked decrease in the amount of internal discoloration after four months in storage.
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Contribution No. 1101 from the Division of Botany and Plant Pathology, Department of Agriculture, Ottawa, Canada.
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MacLachlan, D.S., Richardson, L.T. The rapidity of vine-killing by herbicides in relation to internal tuber discoloration in potatoes. American Potato Journal 28, 687–689 (1951). https://doi.org/10.1007/BF02852481
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DOI: https://doi.org/10.1007/BF02852481