Early harvesting of Granny smith made stained on its fruit surface after while. What is the reason?

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Zviad Bobokashvili

Typical problems for Granny Smith storage is superficial scald, browning of skin ..

DPA treatments is needed defennetely...

Ahmad Ajani

Thanks for your description Sir Zviad Bobokashvili. How about your opinion on Calcium fertilizer spraying before harvesting?

2 or 4 application within of 1-2 month earlier through foliar Spraying of Calcium nitrate -Ca(NO3)2 (15-0-0-19 ) 0,6 - 1,0 kg/100 L solution (500 L/ha) will has benefits, during of this application is reducing ratios of N/Ca, K/Ca, but basically for bitter bit control, rather than superficial scald... for superficial scald control needs DPA drenching and/or MCP application after harvest...