The Genius of American Politics. (Charles R. Walgreen Foundation Lectures.)

THE EFFECT OF SIMULTANEOUS APPLICATION OF ETHEPHON OR 2,4-D ON THE ABSORPTION, TRANSLOCATION AND BIOCHEMICAL ACTION OF ASULAM IN BRACKEN FERN (Pteridium aquilinum (L.) Kuhn)

“…In recent years, the area treated has declined, probably as a result of the economic status of hill-farming and also the uncertainty of control (Martin and Sparke 1982;McCreath 1982). Inconsistent control may, in part, be attributed to a proportion of the buds on the rhizome system which appear to be dormant (Conway and Stephens 1954). These buds may receive sublethal concentrations of the herbicide and thus act as foci for reinfestation (Veerasekaran et al 1978).…”