Which of the following is an appropriate treatment method for corn leaf blight?

The appropriate treatment for corn leaf blight is the use of a fungicide that contains mancozeb. Mancozeb is a broad-spectrum fungicide that is effective against various fungal pathogens, including those responsible for corn leaf blight. This treatment works by inhibiting the growth and reproduction of the fungi, thus reducing the incidence and severity of the disease.

The use of valid fungicides like mancozeb is essential in managing crops affected by fungal diseases, as it can help to protect healthy tissue and promote better overall plant health. Regular application as part of an integrated disease management strategy can lead to improved yield and quality of corn production.

Other options, while they may seem plausible, do not provide the same level of effectiveness for this particular disease. The choice of deep plowing to bury sclerotia may be relevant for other diseases, but it is not a typical treatment for aerial fungal infections like corn leaf blight. Similarly, stating that no treatment is available disregards the effectiveness of fungicides in managing such diseases. Use of fernarimol, while it may have functions in other contexts, is not commonly associated with corn leaf blight treatment. Therefore, using a fungicide such as mancozeb remains the best approach for