The key to efficient and effective weed control lies in a better understanding of weeds, their life-cycles, competitive abilities and strengths and weaknesses. Initial work on the seed production and germination of five weed species was carried out inthe past season and additional plants will be assessed in the coming season. Most weeds are successful because of their ability to produce large numbers of seeds, which germinate rapidly, producing vigorous seedlings and competitive plants. Nevertheless, many weeds produce 'hard' seeds which do not germinate readily, but may remain dormant in the soil for months or years. These dormant seeds can create long-term weed problems, even in fields which are kept 'clean' over successive seasons.
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