CROP failures on acid soils are well known to farmers and to scientific workers interested in plant nutrition ... excess of soluble manganese; (6) biotic factors (for example, mycorrhiza).

Most neutral and alkaline soils, however, evidently contain ample quantities of manganese in a form available to plants. A method of chemical analysis has been found which appears to measure the ...

Mineworkers in South Africa, the world’s largest producer of manganese, complain of memory loss and other neurological ills Men work at the Manganese Metal Co.’s refinery in Mbombela, South ...

The unwelcome guest that is poison ... notorious plant manage a sneak attack, be swift to apply soapy water, running water, ...