how is grass grown by vegetation reproduction?
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On semiarid rangeland, grass seed production is limited. When viable seed is produced, much of it is consumed by birds, small mammals, or invertebrates such as ants or beetles. The diversity and number of viable perennial grass seeds in the top soil of rangelands are amazingly low.
When growing conditions are favorable and plants are not overgrazed, perennial grasses produce new buds every year. Roots from parent tillers greatly enhance survival and growth of tillers from vegetative buds. They also store the energy needed to maintain dormant buds produced in the current and preceding years.
Generally, only a portion of the buds in perennial grasses break dormancy and develop into tillers in a given growing season. The remaining buds will be viable for several years if the tiller network supplies the energy needed to maintain the relatively small amount of live tissue in dormant buds.
Reduced plant growth under drought conditions or excessive grazing may reduce or eliminate formation of new buds.
When growing conditions are favorable and plants are not overgrazed, perennial grasses produce new buds every year. Roots from parent tillers greatly enhance survival and growth of tillers from vegetative buds. They also store the energy needed to maintain dormant buds produced in the current and preceding years.
Generally, only a portion of the buds in perennial grasses break dormancy and develop into tillers in a given growing season. The remaining buds will be viable for several years if the tiller network supplies the energy needed to maintain the relatively small amount of live tissue in dormant buds.
Reduced plant growth under drought conditions or excessive grazing may reduce or eliminate formation of new buds.
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