Zinc tolerance

G.J.O'Connor bsu472 at bangor.ac.uk
Wed Oct 23 06:44:44 EST 1996


Hi,

	Myself an some friends are currently working on a second year 
undergraduate plant growth project. Our experiment is to test tolerance 
levels to Zinc, in two familes (Gramineae & Leguminoseae). We have done 
much research and have found out everything there is to know about 
physiological uses of zinc, and ambient soil concentrations in typical 
environments. What we cannot find is an upper limit for our zinc 
concentrations. We have obviously limited resources, and plan to do 3 
zinc concentrations with a control, and 4 replicates of each. 

	Can anyone tell us if they know an upper limit for zinc 
concentration in the soil, that will kill almost all plant species.

Thanks in advance.




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