First, don't forget to measure root biomass too, which can be greater than above-ground biomass. See my paper on Typha orientalist on this site. Then, you need a proxy for biomass. Sometimes there is a correlation between visible leaf area and biomass or you can use water content. Here is a paper that outlines the use of changes of dielectric properties inside a microwave cavity resonator induced by insertion of live biomass – Plant, Cell and Environment (2009) 32, 368–379.

I hope this helps!

Andrew :-)

Dear Andrew Paul McKenzie Pegman,

Thanks for your reply. I will go through the paper. kindly provide URL link if any for the paper(s).

Thanks again.

Dear Sudhakar,

Please read the attached publication

Good luck