Comparative studies with labeled herbicides on woody plants
A. S. Crafts
Authors AffiliationsS. Yamaguchi was Senior Laboratory Technician in the Department of Botany, Davis; A. S. Crafts was Professor of Botany and Botanist in the Experiment Station, Davis.
Hilgardia 29(4):171-204. DOI:10.3733/hilg.v29n04p171. October 1959.
The spot treatments of 2,4-D*, 2,4,5-T*, ATA*, MH*, urea*, and monuron* to active phloem of manzanita, toyon, and buckeye growing in the field proved that the first two are consistently absorbed and translocated in the phloem. Peak movement followed the season’s flush growth. The other compounds were more generally carried away by the transpiration stream.
Translocation of herbicides in the phloem can occur independently of the xylem. There was ready transfer from phloem to xylem, but downward movement in the tree trunk occurred in the phloem and upward movement occurred in the xylem.
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