Terminal buds die off. The youngest leaves first turn slightly chlorotic, then margins become scorched and roll inwards.
Boron deficiency
Fruits show corking disorders and are often small and deformed.
Boron deficiency
Symptoms can be confused with calcium deficiency. But boron deficiency causes symptoms in early state of fruit development, while calcium deficiency gives symptoms a few weeks before harvesting or in store.
Fruits are small and deformed and necrotic with sunken areas which give a dimpled appearance
Severe boron deficiency
Symptoms can be confused with apple scab (caused by Venturia inaequalis)
Fruits with boron deficiency (left hand side) compared with healthy fruits.
Fruits show corking disorders and some are small and deformed.
Boron deficiency
Symptoms can be confused with calcium deficiency. But boron deficiency causes symptoms in early state of fruit development, while calcium deficiency gives symptomes a few weeks before harvesting or in store.
Surface of fruits shows corky areas and cracks. Fruits are often small and deformed.
Severe boron deficiency
Symptoms can be confused with apple scrap (caused by Venturia inaequalis)
Corky spots appear on the bark of lateral shoots.
Boron deficiency
Surface of fruits shows corky areas and cracks. Fruits are often small and deformed.
Severe boron deficiency
Symptoms can be confused with apple scrap (caused by Venturia inaequalis)