# Maximizing Soybean Yields with Selective Herbicide Technology
Weed competition during the initial 15-30 days post-sowing can reduce soybean seed yield by up to 45%. Hand weeding is often delayed by monsoon rains, making selective chemical weed control indispensable.
Why Synergistic Combinations Matter
Conventional single-molecule herbicides often target either grassy weeds (*Echinochloa, Digitaria*) or broadleaf weeds (*Trianthema, Digera*), leaving un-targeted weed species to dominate the field.
The PROTOCOL Advantage
Zyden's **PROTOCOL** (Sodium Acifluorfen 16.5% + Clodinafop Propargyl 8% EC) provides a dual action mechanism:
- **Protoporphyrinogen Oxidase (PPO) Inhibition**: Rapidly desiccates broadleaf foliage.
- **ACC-ase Inhibition**: Halts cell division at root and stem growth points of grassy weeds.
- **Timing**: Apply 15–20 days post sowing when weeds are at 2-4 leaf stage.