G. B. Williamson

TL;DR: Even dilute, unsaturated solutions of monoterpenes, occurring naturally in plant tissues and soil solutions, may act as potent biological inhibitors, as shown by the aqueous solubility determined by gas chromatography.

TL;DR: The hypothesis was tested that allelopathic agents released from fire-sensitive plants of the Florida scrub community deter the invasion of fireprone sandhill grasses.

TL;DR: Recently, Schmidt (1988) isolated from the soil under Juglans nigra L. a bacterium capable of degrading juglone, the allelotoxin reputed to inhibit neighboring vegetation, which supports the previously hypothesized degradation ofjuglone by microorganisms.

TL;DR: Hydrocinnamic acid (HCA) was shown to have a strongly inhibitory effect on shoot and root biomass of the grass Schizachyrium scoparium in greenhouse bioassays lasting 4.5 months and increased sensitivity under low N and low K solutions may be important in the Florida scrub community.

TL;DR: In an investigation of potential chemical activity of fire-sensitive shrubs in Florida's sand pine scrub community, bioassays of foliar washes of Conradina canescens showed significant inhibitory activity on three native grasses that are known to fuel frequent surface fires; inhibition was concentrated seasonally in spring and summer.