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Studies on the cutting management of pasture during the mid summer season iii. effect of cutting height and nitrogen application on the dead plants weed appearance clover percentage and yield of orchardgrass clover mixtures



Studies on the cutting management of pasture during the mid summer season iii. effect of cutting height and nitrogen application on the dead plants weed appearance clover percentage and yield of orchardgrass clover mixtures



Korean Journal of Animal Science 28(4): 188-192



The field experiment was conducted to determine the effects of cutting height and nitrogen(N) application after cut during the mid-summer season on the dead plants, weed appearance, clover percentage, regrowth and yield of orchardgrass/ladino clover mixtures. Three cutting heights (3, 6 and 9 cm) at the third cut and two N levels (0.50 kg/ha) were assigned, and the experiment was performed at Livestock Experiment Station in Suweon, 1985. 1. Temperature of soil surface and soil moisture content after the third cut decreased as cutting height was high, and regrowth leaf area of orchardgrass increased as stubble height was high, regardless of N application. 2. Dead plants, weed appearance and clover percentage of pasture during the mid-summer season were rapidly decreased with the high cutting height. N application with low cutting height had accelerated domination of weed and clover. However, there was no influence of N on that of weed and clover when the stubble height was 9 cm. 3. Regrowth DM yield was significantly (p < 0.05) increased as the cutting height at the third cut was increased, regardless of N application. Although there was no difference betweenN treatments, the regrowth yield (2, 427 kg/ha) was most in the plot of N application with 9 cm cutting height. 4. The results of this experiment indicate the 9 cm of cutting height is the most effective for good regrowth, control of weed and clover in pasture during the mid-summer season, and N application is not desirable.

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