Effect of manganese deficiency and excess on the distribution of manganese in the leaf blade

1988

Research organisaton

Trial details

Researcher(s) G Cresswell
Year(s) 1988
Contributor South Australian Research and Development Institute
Trial location(s) Caragabal, NSW
Effect of manganese deficiency and excess on the distribution of manganese in the leaf blade locations
Aims

Observations micronutrient distribution of normal, deficient and toxic manganese in the leaves of a range of plant species.

Key messages
  • Leaves showing strongly developed symptoms of manganese deficiency or toxicity obtained from the field.
  • Wherever possible parallel samples from healthy plants were also taken.
  • Healthy green and chlorotic laminar tissue was dissected and manganese determined by atomic absorption spectrometry on acid digests of the wet ashed sample.
  • In healthy leaves manganese is not distributed uniformly but is accumulated in the interveinal areas and the tip and margins of the blade.
  • In deficient leaves this pattern is reversed and manganese concentrations are lowest in these areas.
  • The distribution suggested that manganese is mobilised under severe deficiency however at luxury supply manganese behaves as an immobile element.
  • The strong association between visual symptoms of manganese deficiency and toxicity and the distribution of manganese in the leaf suggest these symptoms are the product of local changes in manganese concentrations in the leaf.
Lead research organisation N/A
Host research organisation N/A
Related program More Profit from Crop Nutrition
Acknowledgments

Cresswell G (1988) Effect of manganese deficiency and excess on the distribution of manganese in the leaf blade. In 'International Symposium on Manganese in Soils and Plants: Contributed papers.' (Eds J Webb, R Noble, R Graham, R Hannam.) pp. 35-36. Manganese Symposium Inc.: Adelaide.


Other trial partners Not specified

Method

Crop type No crop specified
Treatment type(s)
  • Crop
Trial type Experimental
Trial design Unknown

Caragabal 1988

Sow date Not specified
Harvest date Not specified
Plot size Not specified
Plot replication Not specified

Trial report and links


No trial reports or attachments found



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Trial last modified: 09-10-2019 09:57am AEST