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Joliet, IL

merit has the same chemical ingredient as bayer tree
and shrub, but i am not sure at what ratio of
imidacloprid. the bayer tree and shrub has 1.47% imid.
is this the same ratio as merit and should the
mixing rates be the same?

i have a bottle of the bayer tree and shrub and am
wondering at what mixing rate i should prepare at and
when and how many times to apply it to the root system?

any advice is greatly appreciated.
tremor, any thoughts?

2/1/2004 10:28:38 AM

[email protected]

All Imidacloprid formulations are produced using technical grade Imidacloprid that is manufactured by Bayer CropScience. The asterisk* denotes a version not labeled for use on cucumber, squash, pumpkin, etc. But pumpkins can't read. All rates are calculated per acre first. Then I'll divide by 43.56 for the rate per 1000 sqaure feet.

It is best to apply Imidacloprid a week or two prior to planting out in at least 2 gallons of water per 1000 square feet then water it in slowly without puddling. This will control Cucumber Beetles, SVB, & Aphids for about 90 days.

Then repeat the same drench application also watering in at 90 days to cover the rest of the season.

First the Flowable liquid formulations:

Bayer Tree & Shrub*........1.47% Imidacloprid 233-350oz/acre
Bayer Merit 2F*...........21.40% Imidacloprid 16-24oz/acre
Bayer Admire 2F...........21.40% Imidacloprid 16-24oz/acre
Bayer Provado 1.6F*.......17.40% Imidacloprid 20-30oz/acre

Now the various Wettable Powder formulations:

Merit 75WP*...............75.00% Imidacloprid 6.4-8.6 oz/acre
Merit 75WSP*..............75.00% Imidacloprid 6.4-8.6 oz/acre
Provado Solupak*..........75.00% Imidacloprid 6.4-8.6 oz/acre

So........

Bayer T&S.....................5.35-8 oz per 1000 square feet
Merit 2F...................10.3-15.4 ml per 1000 square feet
Admire 2F..................10.3-15.4 ml per 1000 square feet
Provado 1.6F...............12.8-19.3 ml per 1000 square feet
Merit 75WP & 75WSP..3-4 level teaspoons per 1000 square feet
Provado Solupak.....3-4 level teaspoons per 1000 square feet

There are also 4 different granular formulations that are also not labeled for cucumbers.

Steve

2/1/2004 7:05:49 PM

[email protected]

I would therefor take one half of the correct amount of material per 1000 sq ft & add it to 1 gaalon of water to cover 500 sq ft.

So 4 oz of Merit Tree & Shrub per gallon to 500 sq ft.

It is advisable to also drench the mound after transplanting so as to ensure the young roots are treated. Otherwise we have to wait for the roots to grow into the sorrounding treated soil before insect control starts.

See also Len Stellpflug's article in the "how to" section of the website.

2/1/2004 7:10:13 PM

Joliet, IL

steve, thanx again for all the info and taking the
time to respond. i greatly appreciate it.
jeff shenoha

2/3/2004 6:11:56 PM