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Nutrition of rice with reference to the occurrence of akagare disease. VI. Changes in growth, nutrient absorption and metabolism as affected by excessive supply of ferrous iron.

Baba, I.; Tajima, K.

Proc. Crop Sci. Soc. Japan 29: 47-50

1960


Accession: 014122254

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With excessive Fe++ supply, tiny blackish-brown spots appeared on the lower leaves which then turned brown or reddish-brown and died. Heavy N fertilizing, deficiency of P and K and low solution pH intensified this effect. Leaf discoloration due to excessive Fe++ was severe at the vigorous-tillering and booting stages. Severe brown discoloration of the grain occurred at heading and flowering.