A fungicide that affects only the portions of a plant that are sprayed is called what?

A fungicide that affects only the portions of a plant that are sprayed is called what?

• A. Contact fungicide
• B. Systemic fungicide
• C. Penetrant fungicide
• D. Translaminar fungicide

Answer: (A)

A product that only affects the parts of the plant you spray is a contact fungicide. It acts on surface tissue and does not move through the plant to new growth or untreated areas. That’s why it’s best described as staying where it’s applied. By contrast, systemic fungicides move inside the plant, protecting or affecting parts you didn’t spray. Translaminar fungicides move from one leaf surface to the other through the leaf, extending protection to the opposite surface of the same leaf. Penetrant fungicides help the active ingredient enter the plant tissues, which can still lead to movement beyond the sprayed spots in some cases. So the description best fit is contact fungicide.

A product that only affects the parts of the plant you spray is a contact fungicide. It acts on surface tissue and does not move through the plant to new growth or untreated areas. That’s why it’s best described as staying where it’s applied.

By contrast, systemic fungicides move inside the plant, protecting or affecting parts you didn’t spray. Translaminar fungicides move from one leaf surface to the other through the leaf, extending protection to the opposite surface of the same leaf. Penetrant fungicides help the active ingredient enter the plant tissues, which can still lead to movement beyond the sprayed spots in some cases. So the description best fit is contact fungicide.