Manganese toxicity symptoms in Hevea

Abu Talib Bachik, . and Raveendran N., . and Wong S.P., . (1984) Manganese toxicity symptoms in Hevea. In: International Conference on Soils and Nutrition of Perennial Crops, 13-15 Aug 1984, Kuala Lumpur (Malaysia).

The leaves of the affected trees showed symptoms of yellowish green in colour with distinct green midrib veins and veinlets. The symptoms appeared in the young leaves or topwhorl leaves in the case of Hevea seedlings. In a set of pot experiments using Hevea seedlings applications of upto 640 ppm in the form of MnSO to a low Mn soil produced similar symptoms after about one month of Mn application. The concentration of Mn in the leaves was as high as 3185 ppm. In another set of pot experiments also with Hevea seedlings similar symptoms were observed with soils having high EDTA extractable Mn

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Abstract

The leaves of the affected trees showed symptoms of yellowish green in colour with distinct green midrib veins and veinlets. The symptoms appeared in the young leaves or topwhorl leaves in the case of Hevea seedlings. In a set of pot experiments using Hevea seedlings applications of upto 640 ppm in the form of MnSO to a low Mn soil produced similar symptoms after about one month of Mn application. The concentration of Mn in the leaves was as high as 3185 ppm. In another set of pot experiments also with Hevea seedlings similar symptoms were observed with soils having high EDTA extractable Mn

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Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor. S597 P4I61 1984 Call Number.
AGROVOC Term:	HEVEA
AGROVOC Term:	MANGANESE
AGROVOC Term:	Phytotoxicity
AGROVOC Term:	Toxicity
Geographical Term:	MALAYSIA
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:52
URI:	http://webagris.upm.edu.my/id/eprint/7422

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