|Relative above and below ground biomass
of peppermint during the growing and dormant seasons (redrawn from J. N. Pinkerton, 1983.
Relationship of Pratylenchus penetrans (Cobb, 1917) Population Density and Yield
on Peppermint, Mentha piperita L. Ph.D. Thesis. Oregon State University,
Corvallis, OR). (NOTE: flaming controls rust and Verticillium wilt,
but also affects spider mites and predators (Morris et al.
2000) and timing of nitrogen applications).