Which crops are very sensitive to 2,4-D?

Prepare for the Idaho Core Competency and Agriculture Herbicide Test. Study using flashcards and multiple-choice questions with hints and detailed explanations. Ace your exam!

Peas and grapes are highly sensitive to 2,4-D due to their physiological makeup. 2,4-D is a systemic herbicide that mimics plant hormones, leading to uncontrolled growth and can ultimately harm or kill sensitive crops.

In particular, peas exhibit a notable response to 2,4-D, which can cause twisting of stems and distortion of leaves, significantly impacting yield and quality. Grapes, being sensitive transplants, can also experience damage resulting in reduced fruit set and growth abnormalities.

In contrast, other crop candidates listed do not exhibit the same level of sensitivity. Wheat and corn, for instance, can generally tolerate 2,4-D applications when applied at the right growth stage and under proper conditions. Similarly, barley and rye have some level of resistance to this herbicide, and while potatoes and carrots may experience some adverse effects, they are not as acutely sensitive as peas and grapes. Thus, understanding the specific responses of various crops to herbicides is critical for effective weed management and crop safety.

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