Louisiana Horticulture Practice Test 2025 – 400 Free Practice Questions to Pass the Exam

The correct term for the method of application of a pesticide that facilitates absorption by the leaves, stems, or roots of the plant is "systemic." When a pesticide is systemic, it is taken up by the plant through its tissue and circulates within the plant's system, allowing it to affect pests that feed on the plant even if they do not come into direct contact with the pesticide. This method is highly effective for controlling pests that may be hidden or hard to reach.

In the context of this question, "translocated" refers to how the pesticide moves within the plant after it has been absorbed, but it doesn't describe the application method itself. The term "contact" involves pesticides that only affect pests upon direct contact, and "residual" refers to the lasting presence of a pesticide in the environment that continues to affect pests after application. Thus, these terms do not accurately capture the concept of internal absorption.

Understanding the differences between these terms is crucial for effective pest management strategies in horticulture.