The use of 2, 4-d, paraquat and dinoseb for control of filbert (Corylus Avellana L.) suckers Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/qb98mj324

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  • The control of filbert (Corylus Avellana L.) suckers by means of herbicides was investigated in three phases during 1968 and 1969. (1) Screening trials, on canned filbert trees in the greenhouse, to determine the effectiveness of various herbicides and concentrations in controlling vegetative growth. (2) A summary experiment in the greenhouse to quantitatively evaluate the effectiveness of the three most promising herbicides selected from the screening trials. (3) Field trials to determine the effectiveness of the three herbicides at various concentrations under field conditions in a mature filbert orchard. One quart of 2, 4-D, one quart of paraquat, or three pints of dinoseb per 100 gallons of solution gave satisfactory control of filbert suckers. Paraquat and 2, 4-D controlled the appearance of regrowth to a greater extent than dinoseb. Use of oil with dinoseb enhanced the effect of the herbicide. Filbert suckers should be treated when less than one foot in height and thoroughly covered with spray to obtain satisfactory kill. The herbicide 2, 4-D gave better control of larger suckers than either paraquat or dinoseb. No evidence of injury to mature filbert trees was seen where the above rates were used.
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