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Dreshslera poae fungus overwinters on the lower portion of the grass plant in the crowns and roots. Survival in winter is by conidia and dormant mycelia in infected live plant tissue and saprophytically in dead tissue, such as thatch and mat. The pathogen has also been known to overwinter in the dead thatch layer under the turfgrass. [7]
Overwintering bees and other beneficial insects live in the soil, the canes of dead grass, the hollows of dormant perennials and the tufts of fallen leaves.
True dormancy or inherent (or innate) dormancy is caused by conditions within the seed that prevent germination even if the conditions are favorable. [7] Imposed dormancy is caused by the external conditions that remain unsuitable for germination [8] Seed dormancy can be divided into two major categories based on what part of the seed produces dormancy: exogenous and endogenous. [9]
Predictive dormancy occurs when an organism enters a dormant phase before the onset of adverse conditions. For example, photoperiod and decreasing temperature are used by many plants to predict the onset of winter. Consequential dormancy occurs when organisms enter a dormant phase after adverse conditions have arisen. This is commonly found in ...
Grass typically goes dormant during periods of cold or heat outside of its preferred temperature ranges; dormancy reduces the grasses' water demand. Most grasses typically recover quite well from a drought, but many property owners become concerned about the brown appearance and increase watering during the summer months.
Many desert species go dormant or hibernate during drought, which can make wet years look like a relative pageant of color and activity. The Mojave Desert tortoise, for example, weathers drought ...
End of leaf fall, plants or above ground parts dead or dormant; P, V: Plant resting or dormant References.
Almost all ornamental grasses are perennials, coming up in spring from their roots, which have stored large quantities of energy, and in fall or winter go dormant.Some, notably bamboos, are evergreen, and a few are annuals.