Biology and control of cankerworms in North Dakota

dc.publisher	North Dakota State University
dc.rights	NDSU Agriculture and University Extension: Creative Commons Licensing Deed (http://creativecommons.org/licenses/by-nc-sa/3.0/)	en_US
dc.title	Biology and control of cankerworms in North Dakota	en_US
dc.source	NDSU Extension Circular 999	en_US
dc.source	E-999
dc.source	NDSU Extension
dc.description	E-999; Cankerworms are important defoliators of shade and ornamental trees in North Dakota. Several tree species are affected by cankerworm infestations but elm, hackberry and apple are most vulnerable. To a lesser extent, defoliation may also occur on basswood, oak, boxelder, maple and ash. While defoliation in a single season may not damage a large, mature, vigorous tree, defoliation over several consecutive seasons weakens trees and makes them more susceptible to drought, herbicide drift and other insect pests. If defoliation by canker· worms or other insects occurs several years in a row, these combined stresses may kill the tree directly or increase its susceptibility to disease.	en_US
dc.date.accessioned	2011-08-03T15:28:04Z
dc.date.available	2011-08-03T15:28:04Z
dc.date.issued	1990
dc.identifier.uri	http://hdl.handle.net/10365/17438
dc.creator	Christie, Dean
dc.subject.lcsh	Insect pests.	en_US
dc.subject.lcsh	Pests -- Control.	en_US
dc.subject.lcsh	Trees.	en_US
dc.creator.author	Christie, Dean
dc.identifier.agNo	E-999