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Q&A Home

Adrian writes,
04/05/2011:

I have Thrip on my ficus which is about 9 feet tall. Should I spray the hedge or soak the root with Merit WP?

Also how much Merit WP should I use?

Answer:

You should do a foliage spray with the Merit WP as waiting for the product to be taken up by the roots from soil drench and trans-located through the plant can take too much time when you already have a damaging pest population. You will need to use 0.25 tsp of Merit per 2.5 gallons of water and thoroughly spray the foliage (don't forget to spray the underside of leaves). Foliage sprays will also work systemically. In the future you can choose to do soil drenches before the pest population has a chance to build. You will need to use 0.7- 1.4 level teaspoons of MERIT 75 WP Insecticide per foot of shrub height or 1 to 2 ounces per 30 cumulative feet of shrub height mixed in at least one pint of water per foot of shrub height. You will be required to pull back mulch or leaf debris near the root base prior to the application and you will be required to water in the application with about 1/2 inch of water. It is important to keep the soil moist for at least two weeks following the application to help with root uptake.

Answer last updated on: 04/05/2011

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