ABSTRACT
Weeds with rapid seed dispersal and prolonged emergence periods can quickly spread into new territories and alter the seedbank composition and weed population dynamics. If left unchecked, weeds emerging in high densities with or prior to crop emergence strongly compete with crops resulting in significant yield losses. Weeds are most sensitive at the seedling stage and weed management strategies focused to control weeds at this stage ensure for greater weed suppression throughout the crop growth. However, due to environmental concerns and increasing reports of development of herbicide resistance in several weeds, there is growing pressure to design alternative weed management strategies that are more efficient and sustainable. This chapter provides an overview of current knowledge on the seed behavior and factors affecting seed germination and emergence in weeds. Critical information on the favorable environments needed for weed germination and establishment is also reviewed.
