| Show THE CANADIAN THISTLE it is time that we were making some plans to eradicate one of 0 the biggest menaces in this country the canadian thistle marion marion A duvall ot of neola was here and brought it a sample of this thistle which ls is on display in our window it deemia seems that neola has considerable ot of noxious weed uld and some of the farmes farmers are becoming alarmed AS yet there are very few ew of 0 this I 1 w weed ced la abe vicinity of roosevelt iut but it will only he be a matter of time the farmers taran rs in this section will have a big battle on their lands hands T grog gro along the ditch banks i q 1 I drop their reeds in the water aud then wash down to the lower levels vim pau A wenger assistant field agronomist of 0 the idaho university wrote a pamp pamphlet blet on the canada bisti nud ml or arbour rius wais wa s to kill it lm I 1 s hiir to stori store feed ah in Us its uli roots roos efi enables ables elie thistle 0 o VP from I 1 rous icar car li to rosr vear sr in ia order to beccie connive E cru dRat jahe underground parts must be eu entirely i killed the canada thistle mar be ba aradi i bated by one of the following me abeth th I 1 first exposure epo sure of the toots roots see I 1 i third si x 0 o hr arilis ilis tl fourth chemic I action choice ci 0 f method will be govert governed led largely by cI chinall matic cond eions Rions and size ol of tad patch the spread of the thistle Is so rapid jabid in cultivated fields that small patches batches should be attacked and eradicated before the patch becomes large and costly to exterminate jt is not only the cost ot of I 1 jabor later that must be considered conFide co red but also loss of crops iron fron he infested area kirea li if the patch is very small with billy amly a res jew stal s showing digging ut atu ll 11 l l aits nits root ani and it 11 and ex es aut lic ising alem is tile the best eliod to 0 o be the p be very closely clo iely winched watched howver hovver lest a pirt i I 1 lie lie root nay may biava vema remained ined in the ground some times it is practical to use tr r piper paper 0 o sm smother the plant tho the lit per aper fiust have a wide lap and ie s tended not less than eight feet lec t bee ue foad the on outermost armost thistle found it 1 ilia important 1 that enough dirt cover HP P paper a per so that the wind vil not no urb it also must be ept away from tle the paper the pa should be left on during th the e ene growing season another meth of smothering la Is covering with a aliue atiue of rotted straw manure hay bay tieny any other such material horev F the thistle Is known to have town own through lour four foot foet ol of packed yav raw which indicate Indic atop that this DC ethod has not proven uniformly it Is evident that what er material A s used it must lie 10 of depth and must extend bend the patch to a considerable dis uw in several ot of the irrigated sections f athe alle atao the canada thistle ehas has fw a real i 1 koblein its lon on has icen rapid duo due in part t to 0 e fo bat attle had been W w c the fields ot of it and a nd also fe 1 plau ri n it b in have been allowed to 1 i bai kich las been carried pe e water to the cultivated fields auers amers also albo havo have been hesitant to ow w their infested larid land to remain for a season tn lu order that the ato itle ile might be combated 2 i he summer of 1818 1918 the s anji M ty of 0 eradicating cradic atine the canada aj i itle le uy by flooding was nas edited called to it the I 1 e tera ers attention enio astra bors were secured thru farm bureau la in twin falls chuu t felt nd id the work was wag st started artea the toa re kcf a obtained proved highly batts afi ory arid and this method ot of bradica I 1 Is ls now becoming popular tn in the gated cited sections I 1 vas evident from the start that ding ing could be used only where land was waa comparatively level are re the area was not too loo large i L where sae cot wt wi r WAS available the patch of 0 es to be flooded should first be cut close to the ground A j dike Is then plowed up lirot around iud the thistle patch not less than eight feet beyond the outermost thistle and high enough so that the entire enclosure can be flooded to a depth of six inches or more it II the like Is s too close to the edge of oc the oue one will find that the under tinder ground nil parts will be forced beyond the dike and this will cause new lauts lants to spring up at various intervals outside of the dike to keep heep water in the enclosure during the flooding period a ditch bo be built along the side oil of the d headd water should run rua in it A con dually iu ally an opening Is made from le ie ditch thru the dike which keeps J e always at ditch level in the I 1 at 10 1 0 eo o v of 01 continuous flood si S 1 I ivill i most cases kill the canu 0 however ilo bover if 1 the water ir i rd p 0 o alanl for a mouth month or six destruction ot of the thistle is certain tins far no detrimental effects on the rhe soil have beet been noted where h atlea are killed by flooding th abs tbs s method has been u used sed with iceda atall at all times during the growing in season however 1 the hot summer months are arc inhere where the es are very abundant or in fit scattered patches 3 the bare fallow method may give the best results it consist sin fre frequent freau luent ent cutting of the green growth by means ot of a hoe shovel spud plow cultivator disc harrow barrow rod or knife seeder leeder li or other cutting tool fred risher fisher a former farmer living near litiaho killed allied out two canada thistle patches by ilif dir allow or clean cultivation ine medhod rhod each patch consisted of about one or of an acre one being situated on high dry soil and the other on low wet soil the dry patch was plowed uve five times and tle wet patch eight times in the course ol 01 0 the season A hoe and shovel here used between pl owings to cut down all thistle sprouts that appeared at no time lima during the season did the plants get two inches in height these patches were planted to a cultivated crop in 1 pi 9 in order to complete the work no sign ol of this ties was been that year a complete eradication in one bearns work leing indicated on charles Francis cos ranch near livar raul idaho a 1 patch ot of canada thistle was plowed ata depth ot of tour four or five inches oja july IS 19 1919 seven days later tho the thistles whistles es began to appear at which time the patch was again plowed seven inches deep ien ten days later thistles whistles es again began to appear anil and were given another plowing ten inches deep for far t two wo weeks following this no thistles whistles es appeared feared tho thou a few sir stragglers began I 1 show ingup lc gup althis time the pound ground was again plowed each ng necessarily a little litt lo deeper than preceding he ici so that the plow would acour scour Pl plat atwill will tc be wat watched ched in ia tho he spring ot of 1920 IS 20 and enill receive moro more attention it 1 necessary the i arst sl two seasons were exceptionally y thereby favoring extermination I 1 the clean cultivation cultivate ion method T large arge patches should lie be handled just as IL roly the hand ban d work and aion plowing lg cau can be greatly lessened by the use of rod and knife fers I 1 which whick are used on summer fallowed fallowes fall owed land of the dry farm sections A blue print of such buell a weeder may hi be lad had from theUn the hersity division boise idaho uron upon request the host best time to attack ft A ethl ilac patch la Is when it it begins to bloomin ta less the work la Is planned carefully land and c carried out cons conscientiously oust cerad eradication by this method is sure to tail fail and usually serve serves as a cultivation which stimulates the growth of the thistles whistles es so that they become more num numerous rou it when the lie work was started |
