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A method for evaluting pear tree winter hardiness by low frequency electrical resistance of one-year-old shoots


, : A method for evaluting pear tree winter hardiness by low frequency electrical resistance of one-year-old shoots. Izvestiya Timiryazevskoi Sel' skokhozyaistvennoi Akademii (4): 135-140

The shoots, 30-40 cm long, were taken from the 4 cardinal points and from the centre of the crown. The optimum part of the shoot for these studies was between the 6th and 8th internodes from the base, and the best period for evaluating tree winter hardiness was between November and March. The apparatus used is described and illustrated.

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