共 10 条
[1]
Utilization of rough fescue and Parry oat grass by two grasshopper species and effect of leaf water content and stubble height. Willms W D and Johnson D L. Environmental Entomology . 1990
[2]
Effects of fall defoliation on forage selection by deer and cattle. Willms W D,Bailey A W,McLean A,and Tucker R. Canadian Journal of Animal Science . 1980
[3]
Cutting frequency and cutting height effects on rough fescue and Parry oat grass yields. Willms W D. Journal of Range Management . 1991
[4]
Influence of litter on herbage production in the Mixed Prairie. Willms W D,McGinn S M,and Dormaar J F. Journal of Range Management . 1993
[5]
Grazing effects on fescue grassland in western Canada. Peake R W and Johnston A. Proceedings of International Grassland Congress . 1965
[6]
Vegetation and soil responses to short-duration grazing on fescue grasslands. Dormaar J F,Smoliak S,and Willms W D. Journal of Range Management . 1989
[7]
Infiltration rates and sediment production as influenced by grazing systems in the Texas Rolling Plains. Pluhar J J,Knight R W,andHeitschmidt R K. Journal of Range Management . 1987
[8]
Production characteristics of the mixed prairie: constraints and potential. Willms W D and Jefferson P G. Canadian Journal of Animal Science . 1993
[9]
TheimpactofgrazingonlitterandhydrologyinmixedprairieandfescuegrasslandecosystemsofAlbertan. NaethMA. . 1988
[10]
Effects of manure, straw, and inorganic fertilizers on Northern Great Plains ranges. Smoliak S. Journal of Range Management . 1965