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Why are the lower leaves on my tomatoes yellowing between the veins?
Posted by Suttons Staff on 24 June 2013 11:27 AM

Yellowing between the leaf veins and around the margins starts on the lower, older foliage and gradually moves up the plant. Green bands remain immediately adjacent to the vein. As the green pigment deteriorates further purple or brown colouring develops between the veins.

To correct magnesium deficiency mix 200g of Magnesium Sulphate (Epsom Salts) in 10 litres of water (8oz in 2½ gallons) applying as a foliar spray at 7 - 10 day intervals. Alternatively mix 12g of Epsom Salts to 1 litre of water (2oz to 2 gallons) and water this around the root area again at 7-10 day intervals.

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