IRON-MANGANESE RELATIONSHIP OF CHLOROTIC SUGARCANE PLANTS GROWN ON A HIGH-LIME SOIL

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Abstract
Effect of chelated manganese and sulfur dust spray was studied on chlorotic ratoon sugarcane plants growing on a high lime soil. Although the symptoms were indicative of iron deficiency, Mn treatment gave the best response particularly in improving juice quality. Indeed when the chlorotic and healthy plants were analyzed the chlorotic plants were found to be richer in Fe but poorer in Mn than the healthy ones. It has been suggested that the inactivation of Fe may have been caused by the deficiency of Mn. The development of Mn deficiency in the soils of the region where the disorder is noticed has also been discussed.

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