The law of constant final yield and density-dependent effects on Raphinus sativus.

Abstract

The Law of Final Constant Yield states that when density is sufficiently high and resources become limited, the effects of competition will result in a constant biomass due to a proportional decrease in the size of the individuals. We hypothesized that total biomass would be constant irrespective of plant density. We planted Raphinus sativus at varying densities to test this law. Although we could not support the hypothesis, we did note certain trends. At low densities total biomass and mean density are positively related while individual mean mass and mean density are negatively related.