Oireet
Old leaves bluish-green with scorched margins (brown or grey). Margins may first appear light green and later turn necrotic. Necrosis progresses from the margins inward to the midrib.
Syyt
Potassium deficiency
Frost and drought can cause similar symptoms
Oireet
Old leaves bluish-green with scorched margins (brown or grey). Margins may first appear light green and later turn necrotic. Necrosis progresses from the margins inward to the midrib.
Syyt
Potassium deficiency
Frost and drought can cause similar symptoms
Apple: 5 l/ha at bud burst. Also, two to three applications of 2 to 3 l/ha at 10 to 14 day intervals starting at petal fall. A further application of 5 l/ha may also be applied post-harvest before leaf fall. Water rate: 500 l/ha.
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