Which element is used to control corn smut?

The element identified for controlling corn smut is copper. Copper compounds are utilized in agricultural settings for their antifungal properties. In the case of corn smut, which is caused by the pathogen Ustilago maydis, copper can help mitigate the impact of this fungus on corn plants. Copper-based fungicides are effective in suppressing fungal growth, including that of corn smut, making it a preferred choice in managing this specific plant disease.

Phosphorus, hydrogen, and mercury do not have the same efficacy in controlling corn smut. Phosphorus is primarily a nutrient essential for plant growth and development, hydrogen plays a role in the chemical processes of life but is not used for pest control, and mercury is toxic and not used in modern agricultural practices due to its harmful effects on health and the environment. In contrast, copper's specific properties make it a valuable tool in the fight against corn smut.