Polygonaceae — leaf arrangement?
Opposite leaves
Abiotic factors — critical?
Temperature and soil moisture
Weed reproduction — mode?
Gemenative, parasitic, agamospermy
Weeds — definition?
Unwanted plants competing with crops.
Major weed families?
Poaceae, Cyperaceae, Asteraceae.
Seed dormancy — purpose?
Ensures survival during unfavorable conditions.
Seed bank — depth?
Most seeds within 10-20 cm soil.
Reproductive modes?
Gemenative, parasitic, agamospermy.
Growth forms?
Erect, prostrate, climbing, bushy, perennial, annual.
Control methods — flame?
Induces dormancy, not seed bank reduction.
Answer 9 questions on Weed Biology and Control Strategies.
1. Which characteristic is typical of weeds in the Polygonaceae family?
2. What is the primary effect of flame weeding on weed seeds?
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