Division 2.2.2 Yield

The yield is calculated as the biomass at the end of the test minus the starting biomass for each single vessel of controls and treatments. For each test concentration and control, calculate a mean value for the yield along with variance estimates. The percentage inhibition in yield (%I_y) may be calculated for each treatment replicate as follows:

$$\%I_y=\frac{\left(Y_C\mathrm{ – }{Y}_T\right)}{Y}C\mathrm{\times \; 100}$$

where:

%I_y:

percentage inhibition of yield;

Y_C:

mean value for yield in the control group;

Y_T:

value for yield for the treatment replicate.