Absorption and Translocation of CGA-82725 by Additives

Abstract

The influence of various additives on CGA-82725 [2-propanyl-2,4-(3,5-dichloro-2-pyridyloxy)phenoxy propanoate] absorption and translocation was determined in oats ( Avena sativa L. ‘Lyon’). The absorption and translocation of 14 C was greater when 14 C-CGA-82725 was applied with petroleum oil compared to soybean [ Glycine max (L.) Merr.] oil. The translocation of 14 C was greater at 96 than 48 h after 14 C-CGA-82725 application. The absorption of 14 C was greater at 48 than 24 h but was similar at 48 and 96 h after 14 C-CGA-82725 application with no additive, petroleum oil, or soybean oil. The absorbed and translocated 14 C was greater when 14 C-CGA-82725 was applied with oil at 1.2 compared to 0.6 L/ha. No additional increase in 14 C absorption and translocation was obtained if the oil volume was increased to 2.3 L/ha. The addition of petroleum oil to 14 C-CGA-82725 increased 14 C absorption and translocation more than the addition of palm ( Eleais quineeneis Jalq.), safflower ( Carthamus tinctorius L.), linseed ( Linum usitatissimum L.), or soybean oil. The four seed oils and the emulsifier At Plus 300F caused similar increases in 14 C absorption and translocation over 14 C-CGA-82725 applied alone. Ethylene glycol did not increase 14 C absorption and translocation compared to 14 C-CGA-82725 applied alone.