A study of the effect of two levels of nitrogen on the growth of you ng apple trees under grass and under arable conditions - Dancer, J. (Ashford, Kent : Wye College, 1963)
Reprinted from Horticulture Research. Vol. 2., no. 2. pp. 65-73, 196 3.
Includes bibliographical references (p. 73.)
Keywords: Nitrogen; Apple; Plant growth regulators