Wheat and bajra have a critical period of crop-weed competition

🔑 Key Points
Critical Period of Weed competition/interference:
→ This is the minimum period of time during which the crop must be free of weeds in order to prevent loss in yield.
→ It represents the overlap of two separate components:
→ The length of time weeds can remain in a crop before interference begins.
→ The length of time that weed emergence must be prevented so that subsequent weed growth does not reduce crop yield.

📌 Important Points
→ Factors affecting weed-crop competition
→ Competitiveness of weed species
→ Weed density and weight
→ Onset and duration of weed-crop association
→ Growth factors
→ Type of crop and seeding rate
→ The spatial arrangement of crops
→ Plant architecture
→ Growth factors availability
→ Cropping patterns
→ Crop type (C3 or C4 plants)
→ Crop variety (tolerance, resistance, aggressiveness)