
			Missouri Landscape & Nursery Association/MLNA 6209 Mid Rivers Mall Drive, Suite 128 St. Charles, MO 63304 (636) 939-9079

Pest Alert- EAB Update

The emerald ash borer (EAB) has NOT been found in Missouri to date.

Recently a letter was sent by USDA and the Missouri Department of Agriculture (MDA) to all licensed nursery stock growers and dealers in the state of Missouri. The purpose of the letter was to bring attention to the federal emerald ash borer quarantine that now includes the entire states of Illinois, Indiana, Ohio, portions of Maryland, Pennsylvania and West Virginia, and the lower peninsula of Michigan and parts of the upper peninsula of Michigan.

The emerald ash borer (EAB) has NOT been found in Missouri to date. Since the initial discovery of EAB in Michigan in 2002, USDA, MDA and the Missouri Department of Conservation (MDC) have conducted extensive surveys throughout the state in search of EAB. In 2008, these agencies will continue these extensive surveys including the use of a newly developed EAB detection trap that USDA will deploy in high risk areas.

Furthermore, contrary to some sources, there are no effective treatments available for emerald ash borer at this time. If you suspect you have emerald ash borer you may call Collin Wamsley, MDA State Entomologist at 573-751-5505 or Collin.Wamsley@mda.mo.gov for assistance in identification. You may also contact Robert Lawrence, MDC Forest Entomologist at 573-882-9909 ext 3303 or Robert.Lawrence@mdc.mo.gov. The following website has information on EAB http://www.emeraldashborer.info/

	Pest Alert March 26th, 2008
	Pest Alert April 14th 2008
	Pest Alert Week of April 21st 2008

Foliar nematodes (Aphelenchoides
spp.) are microscopic wormlike organisms found in infested plant materials
(annuals, perennials, and soft woody plants) which can vector diseases including
viruses to plants.

An exotic pest that most
commonly shows up on perennials brought in from outside of the U.S. or are grown
in areas with those plants from out of the U.S, they cause elongated discoloration (between the viens) on plants with parallel veins like hosta, and blotchy patterns (again delimited by the veins)on other plants like Japanese Anemome, Butterfly Bush, Huechera, Ferns, etc.

Patterns showing
infestation are most easily seen this time of the year when plants are growing,
but have been exposed to summer stresses. As populations build in the plant, it
can cause stunting, poor fruit or bud set, poor plant health and vigor, and
eventually plant death. They cannot be seen with naked eye but proper
identification can be done with a microscope.

Foliar nematodes can be
easily spread by water (overhead, handwatering and capillary), so careful
sanitation is necessary. Pruning and dividing equipment, infested soil or
media, hands, and even tissue culture and other cultivation practices can also
spread this pest.

Discarding infested
plants are best options of control, and remove leaf litter from the plant itself
and surrounding it (mulch and or soil). No chemicals have yet been completely
effective in controlling a population (soil fumigations as a preplant are
options in some nursery situations).

EAB NOT Found IN Missouri yet- watch for upcoming protocal information