What are the primary crop injury symptoms associated with Metribuzin?

Metribuzin is a selective herbicide primarily used for weed control in various crops. The primary crop injury symptoms associated with exposure to Metribuzin typically manifest first as chlorosis. This yellowing of the leaves occurs due to the disruption in photosynthesis and nutrient uptake caused by the herbicide. As the symptoms progress, they can lead to necrosis, which is the death of plant tissue. This progression from chlorosis to necrosis is characteristic when plants are subjected to Metribuzin, indicating that the herbicide has caused stress that significantly affects the overall health of the plant.

Other potential symptoms, like inhibiting root and shoot growth, may occur, but they are not the most immediate or primary indicators of Metribuzin damage. Symptoms like red veins in leaves or short roots with thickened tips might occur due to other stress factors but are not specifically tied to Metribuzin exposure as prominently as the chlorosis followed by necrosis symptom pattern. Understanding these symptoms is crucial for diagnosing herbicide injury in crops and making informed management decisions.