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Search: authors:"H. F. G. Sauer"

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Vermelhão do algodoeiro

A disease associated with the infestation of cotton plants by the cotton or melon aphid, Aphis gossypii Glov. is described under the name of "vermelhão" or anthocyanosis. Symptoms of the disease resemble those resulting from magnesium deficiency. Aphids collected from diseased plants reproduced the disease when fed on cotton seedlings for 48 hours. Symptoms usually appeared from...