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Abstract The experiment was conducted in one of the apple orchards in Bani Saad district, Diyala Governorate, Iraq, during 2021–2022, to study the effect of foliar spraying of some nutrients and anti-transpiration on the vegetative, flowering, and fruiting characteristics of the apple trees (Ibrahimi cultivar). Spraying with nano-calcium carbonate was significantly superior in some of the following vegetative and fruit growth characteristics (number of leaves, area of one leaf, total leaf area of the plant, fruit weight, fruit size, yield per plant, fruit hardness), while spraying with chelated iron was significantly superior in the number of total fruits. As for nano-iron, it gave the highest percentage of chlorophyll content in the leaves. Spraying with potassium silicate was superior in giving the highest values in the number of leaves, area of one leaf, total leaf area of the plant, chlorophyll, fruit weight, fruit size, and plant yield.
Mulan et al. (Mon,) studied this question.
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