Publication Date

1989

Description

Many cool-season grasses undergo growth retardation during summer when climatic conditions are unfavorable. Actually, grass growth was very vigorous during spring, but pasture production was reduced rapidly through the summer season. Therefore, optimum pasture management during hot summer period is very important to maintain good regrowth of grasses and persistence of pasture in Korea. Cutting height is reported to be an important factor in determining regrowth. Close cutting reduced the stand of nitrogen (N) fertilized pasture (Griffith and Teel, 1965), especially in summer season. In some instances the dead plants have been attributed to a depletion of reserve carbohydrate. Also new grasses following defoliation are closely correlated to the remaining leaf area (Ward and Blaser, 1961). The purpose of present study was to determine the effects of cutting management and N fertilization during mid-summer season on dead plants, weed development, grass regrowth and dry matter yield in orchardgrass meadow.

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Effect of Summer Management on the Dead Plants, Weed Development, Regrowth and Dry Matter Yield in Orchardgrass Meadow

Many cool-season grasses undergo growth retardation during summer when climatic conditions are unfavorable. Actually, grass growth was very vigorous during spring, but pasture production was reduced rapidly through the summer season. Therefore, optimum pasture management during hot summer period is very important to maintain good regrowth of grasses and persistence of pasture in Korea. Cutting height is reported to be an important factor in determining regrowth. Close cutting reduced the stand of nitrogen (N) fertilized pasture (Griffith and Teel, 1965), especially in summer season. In some instances the dead plants have been attributed to a depletion of reserve carbohydrate. Also new grasses following defoliation are closely correlated to the remaining leaf area (Ward and Blaser, 1961). The purpose of present study was to determine the effects of cutting management and N fertilization during mid-summer season on dead plants, weed development, grass regrowth and dry matter yield in orchardgrass meadow.