01220naa a2200217 a 450000100080000000500110000800800410001910000180006024500870007826000090016552006360017465000130081065300140082365300150083765300160085265300120086865300150088065300160089570000240091177300670093517849821995-07-26       1974    bl ---       0--  u    #d1 aHEWITT, G. B.  aEvaluation of methods for screening grasses for resistance to grasshopper feeding.  c1974  aA study was initiated to final a rapid method of screening forage plant selections for grasshopper preferences. Siux grass species both as seedlings and as plant 6 weeks older were fed to nymphs and/or adults of five grasshopper species and one group of nymphis species. It was concluded that it is feasible to screen plant species in the seedling stage for preference by using grasshopper nymphs because the nymphs selected plant species of both ages equally well and their preferences were similar to those of adults. This allows for more rapid screening of plants than would be the case with older plants and adult grasshoppers.  aPastagem  aAvaliacao  aEvaluation  aGrasshopper  aPasture  aResistance  aResistancia1 aBLICKENSTAFF, C. C.  tJournal of Range Managementgv.27, n.4, p.285-287, July, 1974.