Penetration of 3-Amino-1,2,4-Triazole in Canada Thistle and Field Bindweed

The Interaction of Temperature and Carbohydrate Concentration with Absorption and Translocation of 3‐Amino‐1,2,4‐triazole in Bean

“…The cell was sealed to the surface with lanolin and the open top was likewise sealed with a sheet of "saran" wrap. The amount of amitrole absorbed by each leaf was determined by the "leaf wash" technique used by Herrett and Linck (6). After a treatment period of 5 days, the remaining solution was washed from the leaf surface with approximately 50 ml of water, using a fine spray wash bottle, made to volume, and analyzed.…”

The Metabolism of 3‐Amino‐l,2,4‐Triazole by Canada Thistle and Field Bindweed and the Possible Relation to its Herbicidal Action

“…The methods used to grow plants have been described (6). The procedure used to ohtain samples for analyses of amitrole was a modification of methods used hy other workers (t, 9,11,13).…”

“…It bas also been postulated tbat differences in tbe metabolism of amitrole migbt also account for differences in sensitivity between tbese two species (6). Evidence to substantiate tbat a difference in tbe metabolism of amitrole exists between Canada tbistle and field bindweed is presented.…”

“…A difference in sensitivity to 3-aniino-l,2,4-triazole (amitrole) between a relatively susceptible plant (Canada thistle, Cir.>iium arvense (L.) Scop.) and resistant field bindweed [Convolvulus arvensis) tias been reported (6). One reason for tbis difference in sensitivity was penetration.…”

“…One reason for tbis difference in sensitivity was penetration. After tbe droplets containing amitrole applied to tbese plants bad dried, penetration into tbistle was substantially better tban penetration into bindweed and was considered to be a partial explanation for tbe difference in sensitivity between tbe two species (6).…”