Characteristics of weeds
Characteristics of weeds Weeds are also like other plants but have unique characteristics that tend to put them in the classification of unwanted plants. • Most weeds especially annuals produce an enormous quantity of seeds, e.g. wild oats (Avena fatua), which have a million roots. It has been observed that among 61 perennial weeds, the average seed-production capacity was 26,500 per plant. • Weeds can resist adverse conditions in the field because they can modify their seed production and growth according to the availability of moisture and temperature. They can germinate under unfavorable soil-moisture conditions, have a short span of plant growth, naturally grow faster rate and produce seeds earlier than most of the crops growing in the association. Weed seeds remain viable for longer periods without losing their viability, e.g. annual meadow grass (Poa annua) and scarlet pimpernel (Anagallis arvensis) remain viable for about 8 years; creeping thistle (Cirs