Private Pesticide Applicators Practice Exam

Coarse sand significantly impacts water flow and pesticide absorption due to its physical characteristics. The structure of coarse sand allows for larger pore spaces between the grains, which facilitates quicker water movement through the soil. This results in faster water flow because there is less resistance to the passage of water, meaning it drains more efficiently.

Additionally, because coarse sand generally has lower organic content than finer soils, the capacity for nutrient and chemical retention is diminished. This characteristic leads to reduced absorption capabilities when it comes to pesticides. Consequently, while coarse sand enables quick drainage and reduced retention of absorbed substances, it may not hold pesticides effectively, making them more prone to leaching away rather than being retained in the soil for use by plants.

Therefore, this combination of lower organic content leading to enhanced flow illustrates why this choice accurately describes the behavior of coarse sand in relation to water and pesticide dynamics.