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When applying a soil fumigant for northern root-knot nematode in muck soil, what rate should be used compared to mineral soil?

  1. Use the lowest label rate

  2. Use the highest labeled rate

  3. Use the same rate as mineral soil

  4. Do not apply in muck soil

The correct answer is: Use the highest labeled rate

In the context of applying a soil fumigant specifically for controlling the northern root-knot nematode in muck soil, using the highest labeled rate is advisable due to the unique properties of muck soil. Muck soil, which is rich in organic matter and has a high moisture content, can greatly affect the efficacy of fumigants. The higher organic content in muck soils can result in increased adsorption and degradation of the fumigant, potentially lowering the concentration of the active ingredient that is effective against pests. As a result, utilizing the highest labeled rate of the fumigant ensures that there is sufficient concentration in the soil to effectively control the nematode population. This approach is crucial, as insufficient fumigant concentration may lead to ineffective pest control, thereby allowing nematodes to survive and continue to affect crop yields. Hence, applying the highest labeled rate in muck soil is essential for achieving the desired pest management outcomes.