What is one of the main use restrictions for Diquat?

One of the main use restrictions for Diquat is its limitation when applied in turbid water. Diquat is a contact herbicide commonly used for the control of aquatic weeds, and its effectiveness can be significantly reduced in turbid or murky water due to a combination of factors, including reduced light penetration and the binding of the herbicide to suspended particles. When the water is not clear, it may hinder the product's ability to properly contact and affect the targeted plant species, leading to ineffective control.

In addition, this restriction helps minimize potential negative environmental impacts. By avoiding application in turbid conditions, the integrity of non-target aquatic life can be better preserved, and it supports the responsible use of pesticides in sensitive environments.