Root-Knot Nematode Control on Kiwifruit (Actinidia chinensis) by Chemical Bare-Root Dip. G. S. Grandison, Nematologist, Department of Scientific and Industrial Research, Entomology Division, Private Bag, Auckland, New Zealand. Plant Dis. 67:899-900. Accepted for publication 26 January 1983. Copyright 1983 American Phytopathological Society. DOI: 10.1094/PD-67-899.

Chemical bare-root immersion treatments for control of the northern root-knot nematode (Meloidogyne hapla) were investigated on infected 1-yr-old kiwifruit plants (Actinidia chinensis). Dormant plants were immersed for 1 hr in 0.1 and 1% a.i. aqueous solutions of carbofuran, chlorine, isazophos, methomyl, oxamyl, parathion, and phenamiphos. The most effective control of M. hapla was obtained with 0.1% a.i. phenamiphos with no phytotoxic symptoms.