Yield and Quality of `Anna' Apple Trees (Malus domestica L.) in Response to Foliar Application of Ascobine and Citrine Fertilizers

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  • 1 1Horticulture Dept., Faculty of Agriculture, Minia Univ., Minia, Egypt
  • 2 2Horticultural Research Dept., National Research Centre, Dokk, Egypt

The beneficial effect on yield and quality of `Anna' apple fruits for the application of ascobine at 0.1% and citrine at 0.6% was studied during 1995 and 1996. Results showed that two citrine sprays at start of growth and 30 days later of ascobine at 0.1% or citrine at 0.6% were of material promotion effect on yield, fruit weight, total soluble solids, and total sugars, while reducing the total acidity. Both fertilizers were equally very effective in all the studied characters. The most striking and promising treatment was the application of ascobine at 0.1% or citrine at 0.6% twice during the growing season; i.e., growth start at 30 days later.

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