Assessment of methods for measuring available nutrients in Papua New Guinea soils. 2. Microelements, manganese, iron, copper and zinc
1990
MacFarlane, M. | George, S.
Recent interest in soil micronutrients has focussed on chelating agents such as ethylene diamine tetra-acetic acid (EDTA) or other complex solutions for extraction. These have shown limited success compared with simple dilute acid such as 0.1m hydrochloric acid in Papua New Guinea conditions.
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