“…The important point for success is to deliver and distribute the chemicals precisely to the zones of underground creeping systems, otherwise remain shallow in soil surface applications. For this capability, we already had an evidence that soil injected chlorpropham suppressed the regrowth of Fallopia japonica (Ito, unpublished) from deeply penetrated rhizomes, so well as found in Solanum carolinense from creeping roots with its soil incorporation (Ito, et al, 2005, Onen, Ito, & Imaizumi, 2006).…”