Hugh Jerome Murphy

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Atlantic, a new potato variety, was released July 16, 1976, by the Agricultural Research Service of the United States Depar tment of Agriculture, the Florida Agricultural Exper iment Station, the Virginia Truck and Ornamenta ls Research Station, Norfolk, the N e w Jersey Agricultural Exper iment Station, and the Maine Agricultural Exper imen t Station.(More)
The Kennebec variety of potato was exposed toAlternana solani inoculum during the 1970 and 1971 seasons to determine the effects of differential rates of nitrogen and phosphorus on the incidence of early blight. Both high nitrogen and low phosphorus treatments significantly reduced the incidence of early blight and the combination of high nitrogen and low(More)
Killing potato vines as a pre-harvest practice has become widely accepted in the United States and Canada particularly where potatoes are stored for extended periods of time. Reasons for killing potato vines are many and vary among production areas. In general potato vines are usually killed for one or rnore of the following reasons 1. To prevent oversized,(More)
Abnaki, a new potato variety, was released February 18, 1971, by the Plant Science Research Division of the United States Department of Agriculture, the Maine Agricultural Experiment Station, and the New York Agricultural Experiment Station. Abnaki, tested under the pedigree number B5415-6, was selected from a crose between U S D A seedling X1276-185 and(More)
A two-year study was conducted in Maine to measure the effect of three virus diseases on yield, specific gravity, and chip color, of the Katahdin and Kennebec potato varieties. In general, leaf roll reduced yields of tubers the most. Reductions in yields caused by spindle tuber, weak virus X, and severe virus X were lower in that order. Yields of tubers(More)
A three-year study was conducted at Presque Isle, Maine to determine the effects of maturity and storage temperature on the yield and emergence of Katahdin seed potatoes. Virus X, place-effect, and variations in cultural practices were not confounding factors in these studies. Variations in maturity of the seed stocks compared did not show any significant(More)
Since 1964, replicated rotation plots in Presque Isle, Maine have continually been planted and evaluated to determine the effect of various rotation crops on tuber appearance, quality, and yield. In 1974 and 1975, the saprophytic activity ofRhizoctonia solani in the soils of each rotation combination was determined, and the tubers harvested were scored(More)
The results of a 10-year source of potash study indicate: 1) source of potash did not influence yield of potatoes, 2) sulfate and nitrate of potash were equal in their effect on the production of tubers of higher specific gravity than potassium chloride, 3) there was a trend for potatoes fertilized with potassium chloride to produce chips of lighter color(More)
Studies to determine the effect of desprouting and chemical treatment of seed potatoes with tetrachloronitrobenzene on plant emergence, plant stand, and yield of the Katahdin variety were conducted at Presque Isle, Maine during 1960 and 1961. In general, seed potatoes treated with the registered tetrachloronitrobenzene product, 6% Fusarex dust, were not(More)