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Uptake and movement of the fungicide imazalil following trunk injection into apple and plum trees by a novel, rapid technique
Author(s) -
CLIFFORD D. R.,
GENDLE P.,
HOLGATE M. E.
Publication year - 1987
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1987.tb02012.x
Subject(s) - fungicide , biology , fruit tree , horticulture , bioassay , botany , ecology
SUMMARY A hand‐held apparatus, produced by modifying a veterinary multiple dosing gun, was used to pressure‐inject aqueous solutions of imazalil into the trunks of plum or apple trees after harvest, before bud burst or during flowering. Bioassay showed that post harvest injection led to movement of imazalil up and down the trunk and into branches of both apple and plum trees. Movement in the trunk after injection before bud burst also occurred in plums but was limited in apples and fungicide was detected in branches only in apples and only at the end of the season. Injection at flowering time resulted in movement of imazalil into branches of apple, but not plum, trees. Imazalil was detected in twigs of apple, but not plum, trees but only after flowering time injections. The technique could be useful for control of tree diseases provided due attention is paid to dose, to the number and siting of injection holes and to the linking of injection time with the epidemiology of the target disease.