Which control method is recommended for managing Bean common mosaic potyvirus?

The recommended control method for managing Bean common mosaic potyvirus is planting disease-free seeds. This approach is effective because the virus is most commonly transmitted through infected seed and plant material. By starting with disease-free seeds, growers can significantly reduce the risk of introducing the virus into their crops. This preventive measure helps ensure that plants develop healthily without the detrimental effects of the virus, which can lead to reduced yields and poor plant vigor.

In contrast, using infected seeds would introduce the virus into the field, exacerbating the issue. The application of chemical pesticides does not target viral infections effectively, as there are no chemical treatments that can eliminate viruses within infected plants. Additionally, drought stress can weaken plants and make them more susceptible to viral infections, rather than acting as a control measure. Therefore, using disease-free seeds represents the most viable and effective strategy for managing the Bean common mosaic potyvirus.