Merit Systemic Insecticide Granules
Active Ingredient...0.50% Imidacloprid
Merit 0.5 G is a granular product that contains more Imidacloprid than standard store brand granules. Merit systemic granules give long term control of lawn pests such as white grubs. The secret to control of white grubs (the immature larvae of Japanese Beetles, May/ June Beetles, Chafers) is to use a systemic product at a specific time of the year. This timing of insecticide application is crucial for effective killing grubs that feed on grass. If granules are spread on lawn at the incorrect time, your product will probably be wasted and the targeted pest will continue to feed on your turf grass.
There are many pests controlled by Merit although the most popular use is in white grub control. The systemic action gives the long term control needed for a good grub kill but timing of insecticide application is just as important as using the best product for the job.
Application for White Grubs
White Grub is a generic term for the larval stage of a group of beetles
that include Japanese
Beetles and May/ June
Beetles. Timing of insecticide applications for grubs in lawns is the
most important part of the job. Just as in controlling
molecrickets, grub elimination must be timed to target the youngest stage of
the grubs that are close to the surface. While at or near the surface of
your lawn, the grubs are easier to kill. Grubs that are in their early or
most immature stages are more vulnerable to your pesticide application than the
older grub stages.
Merit Granules help take some of the guess work out of when to apply your
pesticide. This product has a longer residual, which translates into a
much larger window of opportunity for you and overall better control of the
grubs in your lawn. For more information on white grubs, their
biology and tips for elimination, go to the White
Grub Control article.
Application to Turfgrass
Merit 0.5 G Insecticide can be used for the control of soil inhabiting
pests of turfgrass, such as Northern & Southern masked chafers, Cyclocephala
borealis, C. immaculata, and/ or C. lurida; Asiatic garden beetle, Maladera
castanea; European chafer, Rhizotroqus majalis; Green June beetle, Cotinis
nitida; May or June beetles, Phyllophaga spp.; Japanese beetle, Popillia
japonica; Oriental beetle, Anomala orientalis; Billbugs, Spherophorus spp.;
Annual bluegrass weevil, Hyperodes spp.; Black turfgrass ataenius, Ataenius
spretulus; Aphodius spp; and mole crickets, Scapteriscus spp.
The active ingredient in Merit 0.5 G Insecticide has sufficient residual activity so that applications can be made preceding the egg laying activity of the target pests. High levels of control can be achieved when applications are made preceding or during the egg laying period. The need for an application can be based on historical monitoring of the site, previous records or experiences, current season adult trapping or other methods. Optimum control will be achieved when applications are made prior to egg hatch of the target pest, followed sufficient irrigation or rainfall to move the active ingredient through the thatch. Applications should not be made when turfgrass areas area water logged or the soil is saturated with water. Adequate distribution of the active ingredient cannot be achieved when these conditions exist. The treated turf must be in such a condition that the rainfall or irrigation will penetrate vertically in the soil profile. Applications cannot exceed a total of 80 lb. (0.4 lb. of active ingredient) per acre per year.
Application to Ornamentals
Merit 0.5 G Insecticide can be used as a broadcast application on
ornamentals in commercial and residential landscapes. Merit 0.5 G is a
systemic product and will be translocated upward within the plant system.
Optimum control will be achieved when applications are followed by sufficient
mechanical incorporation, irrigation or rainfall to move the active ingredient
into the soil. Applications should be made prior to anticipated pest
infestation to achieve optimum levels of control.
A systemic insecticide works from the inside out instead of only on the exterior surfaces of treated plants. Systemic Merit granules give you advantages over conventional granules or sprays. Once the lawn (for instance) is treated with Merit, the insecticide is not as exposed to sunlight and rainfall as regular bug sprays. Systemic insecticides give a longer residual than other insecticides used to treat lawns, which is very important when timing an application to control white grubs in lawns. For a more thorough look at the topic, go to Systemic Insecticides Information page.
Pests Controlled by Merit Systemic Granules
Pests of Turf
Chinch bug (for suppression), molecrickets
Larvae of: Annual bluegrass weevil, Asiatic garden beetle, Billbugs, Black turfgrass Ataenius, Cutworms (for suppression), European chafer, Green June beetle, Japanese beetle, Northern masked chafer, Oriental beetle, Phyllophaga spp., Southern masked chafer,
Pests of Ornamentals, including trees, shrubs, evergreens, flowers, foliage, plants and ground covers:
White Grub larvae (such as Japanese beetle larvae, Chafers, Phyllophaga spp., Asiatic garden beetle, Oriental beetle.
A 30 pound bag of Merit .5 G will cover about one half acre when treating for grubs.