Effect of hand-thinning time on quality of apple flowers cv. Jonagold
2002
Szot, I.,Akademia Rolnicza, Lublin (Poland). Katedra Sadownictwa
The effect of the time of hand-thinning of flowers or fruitlets on the intensity of flowering was studied on 5-year-old apple cv. Jonagold/M26 trees, during 1997 to 2000. At the beginning of the seasons the number of flower clusters per tree was estimated. The trees were thinned in: pink bud stage, the end of flowering, 2 weeks after full bloom and after June drop. The unthinned trees were a control. In the 1998 and 1999 the study of flowers morphology from thinned and unthinned trees was made. It was shown that the best residual effect on flowering of trees was found for thinning after June drop. Neither of the treatments forced typical biennial fruiting trees to regular cropping, however, the thinned trees were less different in intensity of flowering in the subsequent years than the control. The biggest flowers with thick receptacles, high stamens and pistils, and on long pedicles were observed on trees thinned after the June drop
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