FOLIAR ABSORPTION OF MINERAL NUTRIENTS WITH SPECIAL REFERENCE TO THE USE OF RADIOISOTOPES AND THE "LEAF WASHING TECHNIQUE" (thesis)

Foliar Absorption-An Active Uptake Process

“…This led to early work with aquatic plants (Arisz, 1952(Arisz, , 1958 but has left many questions relative to the behavior of terrestrial species. Jyung (1959) attempted to alleviate some of the above technical barriers and developed a "leaf-washing technique." It consisted of removal of the non-absorbed residue from a single drop (0.01 ml) of labeled nutrient applied to the middle of the upper surface of one of the primary leaves of the bean plant by washing the treated site with 10 ml of distilled water delivered dropwise from a pipet.…”

“…It consisted of removal of the non-absorbed residue from a single drop (0.01 ml) of labeled nutrient applied to the middle of the upper surface of one of the primary leaves of the bean plant by washing the treated site with 10 ml of distilled water delivered dropwise from a pipet. Jyung (1959) also compared this procedure with the "leaf-disc removal technique," which consisted of excising the treated area with a cork borer. The superiority of the former over the latter was noted.…”