Show EFFECT OF GRAZING ON TIMBER REPRODUCTION By ByArt Arthur ur W W. Sampson Owing to the d diversified d re resources resources resources re- re sources embraced within the National Forests it is necessary for the ben benefit fit of everybody to toso toso toso so the harmonise the e-the the use of each as asto asto asto to maintain and foster the devel- devel o ment of all Where it is im im important for example x mple to procure procure the th 1 best est possible timber reproduction reproduction and growth g such as fol- fol nga he heavy vy cutting it is sometimes tt necessary 1 necessary either ith w to restrict re re- re I strict st grazing use for a time or indeed to to eliminate the cropping of forage for a a afew few years Such dra drastic tic meas measures es as that of of v entire entire entire en en- tire elimination of stock is exceptional exceptional exceptional usually it is possible to graze raze the l lands moderately at some time in the season season when injury to the timber growth is slight or practically ne negligible As a whole injury to conifer conifer- r reproduction from from grazing regardless re re- regardless I of class of stock varies varied with the in intensity of cropping Where th the range rang i is overgrazed am any class of stock is liable to inflict in inflict inflict in- in serious serious' damage to young seedlings and saplings In In g general gen gen- era oral eral sheep are much more q more re destructive destructive destructive des des- to any class class' t t fimber timber reproduction than c cattle or r es Seedlings a year f r old or or I less s ss as s would b be re subject t I. I 4 to much greater damage than than older plants S Careful investigations conducted conducted conducted ted at the Great Basin Experiment peri- peri ment Station and elsewhere have elsewhere have shown that if there is an abundance abundance abundance dance of forage suitable for st stock ck little injury will result to timber reproduction from grazing On the other h hand ng if there g e is J little forage suit suited q to toT the class of stock sh glazed grazed especially the tree growth glowth within reach is subject to serious damage Re Re- 1 1 IV T k t a ICI CT pF GM ON TIMBER PRODUCTION I- I M RO p cOntinUed f n PaSe paget r of the oun t of feed I n I enable ble howe r r considerable It fiMi e y results from fromn n Th Thc east east ast damage to tor toJ J r occurs when ad Herbage i iti and ten- ten J h. h IC h th the S stock stocka t oc ocl k 7 way war l is s a most import- import t pon the to Ige-to c ii geto tr tre reproduction both Ike tramping and browsing q i t and the ador adof w of tb th bedding out out or ort CU et t system of h handling m i i J. J is of gf lie ie greatest greate t II import import- orti ort ort- i ln n p p e e enting ng serious injury b Being ng ce ie e growth th In case case of ofa a distribution which t et be brought rought ab about ut brous by br byous ous sting herding I the h instruction of sla and divi division n fences by oy of which c c cattle le Ie and horses en e a properly co controlled led is a afe fe 8 of gr greatly atly redu edu redwing ng ing ser serious ous I action ion to yours young conifer conifers 8 s rth rh h. h In razing grazing my any class of id however one of Vae e a J considerations is tH th t t the thebe be cropped on the basis bas of I capacity and n flyer er p ed d excessively Ting mg asp aspen n sprouts are mor Ing ble ible to sheep than conifer- conifer production and hence cor- cor greater damage is Iv T bb inflicted Cattle on the thea thedo a 11 hand do not browse aspen Ii h ts is nearly as ravenously as asand asand I c and hence it is sometimes ble to graze over cut-over aspen t by cattle instead of by pal for Ol three or four years Sang ing the cutting In about g rs Es s the aspen sprouts u usually a a growth beyond the reach I I jep Ie e At that thac stage sheep I I gain gam b be bt grazed on over cut-over e soil 0 1 i lands ands without s serious rious into into in- in lO to the young aspen stand w a full discussion of the theof 11 c of grazing on timber ret re- re t is is referred rl pt of Agri bulletins No st ec tIft I and |