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Typhula blight is a major problem with cool season turfgrasses during winter months. These grasses include bentgrass, annual bluegrass, perennial ryegrass, fine fescue, and kentucky bluegrass. [1] Typhula blight is also commonly referred to as gray snow mold due to the gray colored patches found after snow has melted.
Poa annua, or annual meadow grass (known in America more commonly as annual bluegrass or simply poa), is a widespread low-growing turfgrass in temperate climates. Notwithstanding the reference to annual plant in its name, perennial bio-types do exist. [2] This grass originated as a hybrid between Poa supina and Poa infirma. [3]
Classification into spring wheat versus winter wheat is common and traditionally refers to the season during which the crop is grown. For winter wheat, the physiological stage of heading (when the ear first emerges) is delayed until the plant experiences vernalization , a period of 30 to 60 days of cold winter temperatures (0 to 5 °C; 32 to 41 ...
Annual cool-season – wheat, rye, annual bluegrass (annual meadowgrass, Poa annua), and oat; Perennial cool-season – orchardgrass (cocksfoot, Dactylis glomerata), fescue (Festuca spp.), Kentucky bluegrass and perennial ryegrass (Lolium perenne) Annual warm-season – maize, sudangrass, and pearl millet
It allowed for greatly enhanced weed control in wheat, maize (corn), rice, and similar cereal grass crops, because it kills dicots (broadleaf plants), but not most monocots (grasses). The low cost of 2,4-D has led to continued usage today, and it remains one of the most commonly used herbicides in the world. [ 16 ]
Chemical management of annual bluegrass weevil is the most effective way to reduce the pest population. Preventive applications of insecticides, especially pyrethroids, should be timed with the local Forsythia bloom (half green/half gold)in order to cut the population before the first generation of eggs are laid for the year.
Experiments performed on the famous "Broadbalk" field at Rothamsted Research where continuous monoculture winter wheat is grown, show that take-all build-up (TAB) occurs in successive crops to reach a peak in the 3rd to 5th cropping year, after which the disease declines (TAD), ultimately restoring yields to 80 to 90% of 1st and 2nd year levels ...
This plant pathogen destroys cool season turfgrasses grown in areas with extended periods of snowcover. “Turfgrass hosts include but are not limited to: annual bluegrass, colonial bentgrass, creeping bentgrass, fine-leaf fescues, Kentucky bluegrass, perennial ryegrass, and tall fescue”. [1] Signs of the pathogen can be observed in the ...
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