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Show I ALFALFA WEEVIL FIGHT 1$ OUTLINED FOR I FARMERS M DEPARTMENT OF AORIOULTUBE M OIVES DETAILS OF METHODS. H lEarly Spring Best Time to Mako Tho H Work Effective Spraying Con- H sldcrcd Best Way Stock Not in H Danger From Folson Apparatus H Described in Detail. H CortaMMmience The Hun. M WASHINGTON, I). G, Sent. VS. H J'urttwrs in region newly in real ml by M the MlfHlfH. weevil will Ihj intercut! in B knowing llwt mi umivuliy etfectivi' H iiwIImmI of Willi ml Inu Ihh n workM M out liy the United Rta'.t ilemrttuont of agriculture. SieHnllU of the ile- M jmrtment my that rarely Ihm tiny M hkHImmI oC inet wint nil lieen so M llmnntfihly Hafetnisnletl against full- m lire m alfalfa weevil iirayiiwar. II has M liwrn (wleil arery mwniii for seven M .vwm The cost cf the cijiemtinti M mImhiI b dollar nn acre lit t rifting B wimimretl with the return, nml no 1 fHriiwr in the territory inlWled or m threatened can afford to overlook it, M the specialist say. There is no con- H I nil measure, lwwever, which ctiti lie fl niiplletl advantageously this Into in M 1ho MAtoii. Kficctivu work must he M Ielyd until next spring. Control is B liad liy spraying oison over tho fields M mi that it will cover the throwing pnrls H on which the weevils mostly feed. M Arsenate of lead mid aoenitu of xinc B have Keen miMtly used, hut other BKV ursenieals recommended for orelinrd HBJ rayinr are thought to ho iiImiuI as BKV .good. There is prnetieally no danger -of hurtling the foliage of alfalfa and, thereforv, the rouge of auitahlo jolom is larger than in fruit tree pra.Wng. Arsenntu of lead is said to BKV die, everything considered, tho host HBJ IMHMin to use, priueipttlly heeauso it HBJ ntleks to the leave more readily and BH ol Ism than most of tho others. Tho jMiiwm is weighed or measured nt tho rate of two Kiunds of powder or four jMHiniU of commercial paste for each hundred trillions of water, is stirred with h little waiter in n pail until it becomes n thin paste without Iiiiiiim .mid I diluted hid strained into the vfjirajer tank. Two pound of laundry onp for onnli gallon should ho .uldcd lu order to make tho liquid iittek lo Itho leave properly. The dry, powd- mreil form of llio poison is lietter limit Bb ' -the rMftte. Tliere is no danger of stock BBV lieing imimintHl hy hay cut from spray- BBTJ -d fields whoru the jioisoii is applied BBB wt a rate not greater than it hundred BBh Kalian of spray mixture tier avre. Simple Outfit Sufficient. BBB T1m esMiitluU of the spraying out- BBTJ flt are a truck or other vehicle, a tank BBTJ -with an agitator to keep the (Miiwin BBTJ from witting to the IhiIIoiii, a pump, BBV' preMtire guage, an ongiiiy and BBTJ tfwm)iiig Jack unleM the pinup is to BBl i ilrivwi hy hand, n Htrainer, n piiio BBJ for distributing the liipiid from llio BBJ iitiinp and as many noules as are re- BBJ (iiiirwl by the cajHiuity of tho pump. BBJ Those tMtmutiaU may all be contained BBH in u Iwrrelpump outfit carried in n BBl )!!. The puiiiji must he cawble of BBH UtJivering our-lilllm of a giilliin or BBl more a minute and nmiiitaining n BBJ prmui of at least iwuiity-fivo BBb ;jhjuiii1h. If the prwtsuro is Ivtm limn BBVj tliat the mist spray will not lie fine BBJ nntigli to prevent the liquid from BBJ ifHthering in dnM and running to tho BBB gnniiiil instwHil of drying on the top BBB -of lite plauU. The number of uosxltw BBB ihhhI 1k)ii1iI be'suffioieut to take up BBB the capacity of the pump. At the BBB MVttrNg walking gNit of a team, each BBB iHHUile should deliver uine-teutlis of a BBB gallon a uiiiiule. Therefore, a pump BBB -4if nine gallon capaeity mv miiiuti1 BBB will stqipTy ten uoxxles, eacli of whii'li BBB eovurt a strip two feet wide, Ilv an BBB HritliHwtleul oaleulatiou of the cubical BBB eontent of Uih pump c,liuder and the BBB number of Ktrokea per minute, the BBB Mpaaity of the outfit can be detenniii- BBB m1. The spray sliould be applied at BBB the rain of a hundred gallons of BBB sproy mixture wr acre. Nearly any BBB kind of spraying outfit can he adapt- BBB k1 for this purKHi. However, modern BBB orehard pray outfita are usually do- BBB ig'iied to give a (H)iiiwmtivuly small BBB flow and high pressure and are Is BBB writable for alfalfa spraying than the BBB older pomMi with larger cylinder and BBB atroitger stroke designed for litrger BBB flow and lower pressuro. BBB Koop Well Stirred. BBB The hprnying outfit should bo BBB mounted on the wagon or other vehicle BBB used so that the noxxles will be about BBB two feet aliov the to) of the alfalfa BBB plants. Four fifty-gallon ImrreU with BBB win engine mid pump mounted on an BBB (ordinary wagon or for a hand pump BBB nn expreM wagon and fewer barrels BBB constitute h sntisfaotory outfit. A BBB paddle, dasher or somo other form of BBB agitator must be provided to keep the BBB liquid stirred. A strainer of twenty- BBH jnoeh brass or broiuo soreen should be BBH .fit I ml to tho opening through which BBH tho water outere the tank mid an- B -otliur over the outlet lending to the H. 'pump. The parts of the pump in HBTJ which eloso fit ting is required should B bo of brass, bronze, jKiiwliiin or some H rothar substauco less mjiidly corroded H by tho ahomioaU than are iron mid H stent. All commeriuul spray pump H .nro built in this way, but pumJM which woro intended for other pur- H 1o6oa should bo refitted when used H J'or spraying. An cngino driven out fit must hnv n relief vntve near iho pump, permitting the surplus flow to return to tho tank. Tho pump must have nn nir prewuro chamber largo enough to keep tho flow steady and insure oven distribution of the oison. Hven prcMiirc, indispensable for uniform uni-form spread of tho (wison, can not he iiininlninwl without n premuro gauge. This gauge should be nttached to the pressure chamber or near it and nt n distance from tho relief valve and the noiszles. The boom or pipe which oar-rie oar-rie the iiossIm and supplies them with liquid from the pump is 'made of two-foot pieces of half-inoh galvanized galvan-ized iron pio joined by tees, each of which affords nn opening for the attachment at-tachment of a no.sle. The boom is connected with the pump by n half-inch half-inch pressure hose, Tho boom should ho supiKirtcd by n piece of timber, two by four, clamped or hinged to tho truck with the boom stapled, bolted or wired to it. Plain misty nozzles without strainers or other complications complica-tions should ha used. Spray In Warm Weather. The host time for spraying is nt what the specialists call tho turning TWO WKBVIIj jwint of wcovil infestation from one to two weeks before the first crop is ready for cutting, when tho young larvae become so numerous that they completely destroy tho growing tips. After tlint point is reached tho weevil, weev-il, if left alone, consumes the leaves until nothing is loft but the woody fibers. If spraying is done at this time the crop recovors quickly. Spraying Spray-ing yearly in the spring sometimes entirely en-tirely prevents damage, hut it is uncertain. un-certain. On the other hand, plnnti sprayed after they were entirely stripped of their follago haVo been able to recover and bloom, but this allows destruction to go too far mid makes iccovcry too slow. Spraying nt tho "turning jwlnt" not only protect pro-tect the first crop, hut confers nn even larger benefit on tho second crop, which siirouts mid grows without with-out delay and no treatment of the stubble is necessary. Stubble spraying spray-ing after tho cutting of the first crop has been successfully done, but it requires re-quires getting into tho field immediately immedi-ately after cutting and n much larger quantity of liquid is required than if it were applied to tho first crop. .Stubble spraying, therefore, is advised advis-ed only when earlier spraying has been Impossible. Spraying should he done, if piiRflihlc, nt the heginiiing of a warm spell. Tho weevils do not feed so voraciously in cool weather mid if the Milson is applied at tho beginning be-ginning of n cool spell it may become largely iuiMitent before the weevils ronuinc feeding freely. When spraying spray-ing is done under favorable weather conditions most of tho weevils nro killed within four or five days. Somo Other Methods. Thcro nro other control measure, hut none of them promises much unleM un-leM applied before or immediately after tho first cutting. One method is to Htsture tho alfalfa field until most of the eggs mid young larvae have been destroyed. Another Is to ime the alfalfa as a soiling crop, cutting cut-ting it green two or three, times during dur-ing the season. The' methods, however, how-ever, must ho practiced before the turning point of infestation, ns after that time the weevils destroy the plants so comnlctely that there is not enough growth for either pasture or soiling. Another method is to cultivate culti-vate the field with n barrow or other implement, immediately after the first cutting, in such way as to cover the field with a dust mulch, thus ex-IMMting ex-IMMting the entire surface of the field to the sun and killing most of the weevils. Iu'gomo instances tho second sec-ond crop has been protected by dragging drag-ging the stubble, while it is still et from irrigation, with the land levcler or the dodbreaker. This causes the insects to perish hy embedding them in the mud, but it is harmful to the soil mid is not recoi.imciided. |