What is the difference between contact and systemic insecticides?

Systemic insecticides are absorbed into the plant's vascular tissue, killing feeding insects from within. Contact insecticides kill target pests directly on contact with the sprayed leaf surface.

Why are adjuvants added to crop protection sprays?

Adjuvants are tank-mix additives that improve leaf wetting, spreading, and penetration. They also enhance rain-fastness and reduce chemical drift during application.

How can I prevent pest resistance to agricultural insecticides?

Rotate between crop protection chemical classes with differing modes of action (e.g., organophosphates, pyrethroids, and neonicotinoids) and apply at recommended dosage rates.

What is an Emulsifiable Concentrate (EC)?

An EC is a liquid formulation where the active ingredient is dissolved in a solvent with emulsifiers. When added to water, it forms a milky emulsion, allowing for excellent coverage and rapid penetration.

Why is water pH important for pesticide spraying?

Many pesticides, particularly organophosphates and synthetic pyrethroids, degrade rapidly in highly alkaline water (pH > 7) through a process called alkaline hydrolysis. Adjusting the spray water to a slightly acidic pH (5.5 - 6.5) maximizes efficacy.

Agrochemical Market Trends in Africa for 2026 and Beyond

Agrochemical Market Trends in Africa for 2026 and Beyond | Gloria's Blog