Citation: Fa. Robbie et Cj. Atkinson, WOOD AND TREE AGE AS FACTORS INFLUENCING THE ABILITY OF APPLE FLOWERSTO SET FRUIT, Journal of Horticultural Science, 69(4), 1994, pp. 609-623
Citation: Fa. Robbie et al., BRANCH ORIENTATION AS A FACTOR DETERMINING FRUIT-SET IN APPLE-TREES, Journal of Horticultural Science, 68(3), 1993, pp. 317-325