What effect do root-feeding aphids have on plants?

Root-feeding aphids have a detrimental effect on plants primarily by weakening the root system as they feed on the sap. These aphids extract nutrients and fluids from the roots, which can lead to reduced plant vigor and overall health. When the root system is compromised, the plant may struggle to absorb water and nutrients efficiently, making it more susceptible to stress from environmental factors like drought or disease. Additionally, weakened roots can lead to stunted growth and increased vulnerability to other pests and diseases. The impact of their feeding can be significant, especially in young or developing plants, where a strong root system is crucial for establishing growth and resilience.