Factors affecting the productivity of irrigated annual pastures. 2. Defoliation by dairy cows [northern Victoria]
1986
Stockdale, C.R. (Victorian Dept. of Agriculture and Rural Affairs, Kyabram (Australia). Animal and Irrigated Pastures Research Inst.)
Hard-grazed plots tended to produce less herbage than did lax- and medium-grazed plots. When the interval between grazings was extended, the variation in productivity was reversed, with lax grazing resulting in least total production. In the spring of 2 of the 3 years, hard grazing markedly reduced subterranean clover and increased grass content. In the 3rd year, weeds were important early in the season. The long-term regenerating ability of an annual pasture may be impaired if severely grazed at regular intervals.
显示更多 [+] 显示较少 [-]