Selective herbicide under cotton + blackgram intercropping system is

✅ EXPLANATION:
• Selectivity: Oxadiazon is a selective pre-emergence herbicide, it primarily targets germinating weeds while leaving established plants such as blackgram unharmed, which is crucial in intercropping where both crops are simultaneously present.
•Spectrum: Oxadiazon effectively controls a broad range of grassy and broadleaf weeds commonly found in cotton fields, reducing competition for resources such as water, sunlight, and nutrients.
•Soil persistence: It has moderate soil persistence, providing long-lasting weed control with a single application, minimizing the need for repeated herbicide use.
🔹 Diuron: Diuron is a non-selective herbicide that kills all plants, including cotton and blackgram.
🔹 Fluchloralin: Fluchloralin is a non-selective herbicide that kills all plants, including cotton and blackgram.