Soil action
The capacity of pesticides or fertilizers to affect plants and pests through the root system by being absorbed from the soil solution.
Также говорят: soil activity, root uptake, soil residual effect
Soil action is essential for pre-emergence herbicides, systemic insecticides, and slow-release fertilizers. This mechanism allows the active ingredients to form a protective zone or a nutrient reservoir in the root zone, ensuring long-lasting effectiveness compared to foliar applications.
Success depends heavily on soil moisture levels and organic matter content. A common mistake is applying these products to overly dry soil, which prevents uptake, or improper incorporation depth, leading to reduced efficacy or increased risk of crop injury.