@article{arnold_young_1991, title={CuCO3-painted containers and root pruning affect apple and green ash root growth and cytokinin levels}, volume={26}, number={3}, journal={HortScience}, author={Arnold, M. A. and Young, E.}, year={1991}, pages={242} }
 @article{arnold_young_1991, title={INFLUENCE OF CHILLING AT 5-DEGREES-C, IBA, SUCKERING AND TOP GROWTH ON ROOT REGENERATION IN SEEDLINGS OF MALUS-SPP}, volume={66}, ISSN={["0022-1589"]}, DOI={10.1080/00221589.1991.11516171}, abstractNote={SummaryFour experiments were conducted to separate the enhancement of root growth by chilling at 5°C from the promoting effects of the growth of new shoots and suckers (adventitious shoots from roots) during forcing in apple. Various combinations of low temperatures (5°C), detaching plants at the soil surface, girdling, and/or IBA were used to suppress new shoot and sucker growth during forcing after subjecting Malus seedlings to increasing levels of chilling. Following increasing duration of chilling at 5°C (CH), forcing intact Malus domestica Borkh. seedlings at a 20°C soil and air temperature caused initial bud- break, shoot extension, and root growth to occur earlier, faster, and to reach a greater final magnitude. Detaching M. domestica seedlings at the soil surface prior to chilling was ineffective as a means of separating root and top growth responses to chilling as it stimulated production of suckers and/or watersprouts near the soil surface. Root numbers and fresh weights in M. domestica, Malus a...}, number={4}, journal={JOURNAL OF HORTICULTURAL SCIENCE}, author={ARNOLD, MA and YOUNG, E}, year={1991}, month={Jul}, pages={423–433} }
 @article{arnold_young_1990, title={Differential growth responses of apple species to chilling and root pruning}, volume={115}, number={2}, journal={Journal of the American Society for Horticultural Science}, author={Arnold, M. A. and Young, E.}, year={1990}, pages={196} }
 @article{arnold_young_1990, title={Growth and protein content of apple in response to root and shoot temperature following chilling}, volume={25}, number={12}, journal={HortScience}, author={Arnold, M. A. and Young, E.}, year={1990}, pages={1583} }
 @article{arnold_young_1990, title={Use of dyes to facilitate measurement of new root growth of apple}, volume={25}, number={1}, journal={HortScience}, author={Arnold, M. A. and Young, E.}, year={1990}, pages={116} }