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Delaware, Ohio

Can I spray or drench with merit on an established plant that has not been sprayed or drenched with it before? Will it do any good?
~CG

8/17/2007 12:10:32 PM

Westford, MA

Sure you can introduce it to na established plant.
It's a systemic so spraying it on the leaves and the drench, will both work.

It does however take time for it to get into the system of the plant.
So keep up with your contact spraying of insecticides and fungicides.
kjk

8/17/2007 12:55:09 PM

Menomonie, WI ([email protected])

You might have a good question here..I believe since it is a systemic it is translocated to new growth only. Sort of like the concept of spraying round up on a mature plant. Tremor will set us straight.

8/17/2007 1:00:44 PM

Westford, MA

I've been using another systemic Messenger from the beginning.

How would Merit work on an established rose bush or tree?

I've used it to save couple of blue spruce from the "wooly adeldrige"(something or other) that was eating the trees from the tip down. Merit also saved 1 of 2 Mountain Ash from something that ate it's 18 year old twin and works against bugs on my Rugosa roses.

8/17/2007 1:22:33 PM

Eugene, OR

From my experiences with Merit, it will translocate into some of the older growth if only doing a soil drench. However, a foliar application to cover the oldest growth along with a soil drench should cover the entire plant. We do the same thing with foliar applications of systemic fungicides....it gets into the plant through the leaves instead of via the root system.

8/17/2007 3:59:38 PM

ordinary,VA

Started using merit early in the season as a soil drench.
but the last two times i used as a foliar,used on new and old growth.so far so good.

8/17/2007 4:22:07 PM

Georgia

How much do you mix up per gallon in comes in a 2oz bottle. Its really too late for me now but Id like to use it next season. Thanks

8/17/2007 4:30:16 PM

derry n.h u.s.a.

C.G the past five or six years i,ve suffered set backs from aphids,probley as bad as it can get ,by sept my leaves looked horrible ,under sides of leaves covered sucking the life out of my plants.So this year i tried (Bayed Advanced lawn,long season grub control with merit)active ingredient Imidacloprid of 1.47%.I started in early may,my patch size is 1000 sq/ft (this yr i only grew 1 plant 400 sq/ft)I sprayed an area of 500 sq/ft using half the blue container(which is rated for 5000sq/ft for lawns)but i wanted to be sure so i over did it a bit,I spray every 3 weeks or so give or take a couple of days drenching the whole plant and soil(i think the soil is the key sinse its a systemic!)anyways im on my 3rd container only have 1 application in a couple of days left,not 1 Aphid/Nat/nothing I have found dead 3 or 4 dead vine borers.Anyways absolutley no insect problems this year due to the advanced lawn care program.I will be adding this to my spray program for years to come.Hope this helps.John

8/17/2007 5:18:51 PM

Mill Bay, British Columbia

Aphids used to do the same trip in my patch (it is really the only insect pest we have here in the Pacific Northwest) so I picked up some Orthenex and have been using it for the past couple of seasons. Also a systemic for insects and for disease, it helps prevent PM and other nasties that many folks get in the patch.

I know other growers on this site that use Orthenex as well and swear by it....not that expensive either.

8/17/2007 5:24:43 PM

ordinary,VA

Jason hope this helps on how much Merit to use.

http://www.cdms.net/ldat/ld6L2003.pdf

http://www.fruitfromwashington.com/Recipes/measures.htm

8/17/2007 7:24:48 PM

[email protected]

CG,

If pests are present that Merit controls then it will work on any age plant IF the plant parts are functional. Vines that are constricted by bacteria or borer infested won't translocate the material. Likewise, leaves that are starting to become aged & dry also won't translocate whether foliar or root applied. Merit will still act on contact regardless the plant's condition.

Jason,

Merit 75WP is 4 level teaspoons per 1000 sq ft (for soil applied systemic) regardless of the quantity of water. I like to use 2 gallons per 1000 sq ft so I add the 4 teaspoons to 2 gallons of water & spray the entire 1000 sf area evenly. Then give it a good watering in & keep it evenly moist for 2 weeks.

8/18/2007 12:44:52 AM

Delaware, Ohio

Thank you to everyone. This really helped.
~CG

8/18/2007 8:36:43 AM