Uptake, Translocation and Transformations by Higher Plants

Uptake of systemic fungicides by maize roots

“…As mentioned by Gyula (1975), the limited root absorption of ionized forms can be explained by their low lipid solubility. On the other hand, translocation within the apoplast of plants generally increases with water solubility (Wain and Carter, 1967); with stable benzimidazole fungicides, for example, the cationic forms (which have the highest water solubility) move more readily than unionized forms within the transpiration stream (Buchenauer and Erwin, 1972). Finally, adsorption in soils of stable benzimidazole derivatives is mainly in the cationic form (Aharonson and Kafkafi, 1975).…”

Über die Wirkung verschiedener Fluoren-Derivate auf die Fusarium- und Verticillium-Welke der Tomate

“…Phytotoxische Schadigungen in Form von Blattrandnekrosen wurden bei dieser Konzentration vor allem von den Bromverbindungen hervorsrerufen. Unbehandelt 2 -Bromfluoren (2 -BrF) 9 -Bromfluoren (9-BrF) 9 -Chlorfluoren (CLF) 9 -Hydroxyfluoren (HF) 2 -AcetylfLuoren (2-AF) 2 -Nilrofluorenon (NF) CARTER (1967) sowie DiMOND (1962) die phytotoxischcn Nebenwirkungt-n angesehen werden. Tatsiichlich sdiadigten die emzelnen Verbindungen in Abhiingigkeit von der funktionellen Gruppe oder dem Niditmetall am Fluorenmolekul bei hoheren Aufwandmengen (5 ^' 10""' M) iiber die Wurzeln die unteren Blatter der Tomatenpflanzen unterschiedlich stark.…”

Residue Reviews / Rückstands-Berichte

“…NORRIS (1967); the latter author cites reviews covering foliar uptake of systemic insecticides. The uptake of chemotherapeutants, including antibiotics and various fungicides and bactericides, has been covered by P. W. BRIAN (1967), DIMOND (1965), GOODMAN (1962), and WAIN and CARTER (1967). Advances in the foliar absorption of mineral nutrients has been thoroughly documented by JYUNG and , WITTWER (1964 and, WITTWER et al (1967), and WITTWER and TEUBNER (1959).…”