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i lT m ■< gi - ' Pi X . m m $ : . 1 M \ ■ ii - jwwptwwwwSmd Engineered and ruggedly built especially for the heavy-duty re quirements of Montana Ranchers. Guaranteed by the manufacturer for highest operating efficiency and overall endurance. Featuring 1. Simple, piston type pumps—finest built! 2. One man operation—all the way! 3. Rust-proof copper boom tubing ! 4. Non-drip nozzles prevent crop damage ! 5. Boom carrier on 4:00 x 8" pneumatic Wheels ! 6. Triple screening prevents nozzle clogging! Hurst Sprayers give maximum year-round usefulness . . •. including fire-fighting, cattle spraying, white-washing, etc. mm 30 & 40 FOOT RETRACTABLE SULKY "FLEX-ACTION" BOOMS BEST FOR UNIFORM SPRAY DISTRIBUTION ; •Car-, i V, -— SC I A Wmem? v M ^3 6 « / n (Model 8250 shown) ' - «S', i y. • SPRAYS EVENLY ON ANY GROUND . LEVEL OR HILLY • TOWS EASILY ... BOOM IS QUICKLY RETRACTED BY ONE MAN • • mm ^23 Capacities 8-10 G.P.M.; 20-500 p.s.i.; 150 & 250 gallon tanks; Round or Square Tanks; Generously Powered Write for complete specifications, today! LEWISTOWN Martin Farm Supply BILLINGS S. & S. Ranch Supply, Inc. HARDIN Warren & Sons TOWNSEND Neifert-White CONRAD Conrad Implement Company DUTTON T. J. Cheetham & Sons HAVRE Farm Equipment Company SHELBY K. & T. Implement Company MALTA Riverside Equipment Company POPLAR Bills Auto & Implement Company FAIRVIEW Collins Mercantile Company GLENDIVE Milne Implement Company MILES CITY Miles & Ulmer Distributor WUNDERWALD & HAAS Implement Co., Great Falls —f s —t' , -1 I * * * ♦ * r : : : * * • ckV ■ : 0 X r Special Rules For Whitetop Control By R. L. WARDEN Extension Weed Control Specialist WHITETOP CAN BE controlled very satisfactorily with 2,4-D if the rules of the game are followed. We now have about four or five years of research experience to show us what to do to obtain the best pos sible degree of control. As in the case of other perennial weeds we do not expect to get complete con trol with one treatment since peren nial weed eradication does not end with killing the plants. There are always some seed left in the ground which can start the infestation all over again if they are not stopped. The rules of the game where 2,4-D is being used to control whitetop are simple but they are somewhat dif ferent from those for some other perennial weeds. Treat Before Bloom The first rule is treat whitetop before it has reached full bloom stage. After whitetop has reached full bloom it becomes much more resistant to 2,4-D and often seed production is not even stopped. Rule number two is don't skimp Coddling Moth Control rr* Set Traps Note to Check Infestation By J. P. CORKINS, Assistant State Entomologist Distribution—The coddling moth is found in most home orchards and in some Montana commercial orchards. Many Montana commercial orchards do not have the coddling moth prob lem, but bait traps should be set out to determine the existence of cod Type of injury—The larvae (worms) of the coddling moth tunnel into the fruit and are usually found around the core. This insect is not the only cause of wormy fruit in Montana, but it is believed to be the most dling moths so that a spraying pro gram may be conducted if necessary. frequent cause. Life hislory—The winter is spent as a pre-pupa in a silken cocoon under bark, scales and in trash around the trees. In the spring, these pre-pup; e change to grayish-brown adult moths which are three-eighths to five-eighths of one inch long. The adult moths usually appear in late May or early June, laying eggs on the foliage and fruit. The eggs hatch into larvae (small worms) in 7 to 14 days and soon en ter the apple. Usually by mid-July the larvae (worms) have finished feeding inside Df the apple and drop on the ground or crawl under bark scales. Some of the larvae form a pre-pupa and are ready to hibernate for the rest of the season. Others of the larvae form true pupae which develop into second-, brood moths. The second brood adult moths then lay eggs which hatch into second-brood larvae. These sec ond-brood larvae are the cause of late summer damage and can usually be prevented by control of the first brood. Timing —First brood: The date of appearance of adult moths in the spring varies greatly from year to year. In one Montana area the first moths were found on May 29, 1949, and June 14, 1948. This clearly indi cates the absolute necessity of deter on rates of 2,4-D. Research results have generally shown that rates of 2 to 4 pounds of 2,4-D as an ester will give the best results. For a 3.34 isopropyl ester the two pound rate would require about 5 pints or 2% quarts per acre. The four-pound rate would require about 10 pints per acre. The rates which give the best kill as you know are too high for selec tive spraying in cereal crop. How ever, they can be used in conjunc- * tion with an established perennial grass such as crested wheat or smooth brome with a good chance of increasing kill. Lighter rates will kill young plants in cereal crops but root kills will not be large. Fall Treatment Feasible In addition it is feasible to treat whitetop in the fall if new growth is showing, since certain results indicate that better control may be obtained by fall treatments. Whitetop is one of the earliest of the perennial noxious weeds to bloom and in some parts of the es tate may be almost to the bloom . stage by May 15, so for best results get the 2,4-D on early. If you do not know whitetop and think that you have some, take a plant to your county agent or send it to R. L. Warden at Montana State college for identification. mining the time of moth flights to insure effective application of spray. Bait traps constructed from a one pound coffée can are ideal for this high in the apple tree and arranged purpose. These traps should be hung on a pulley and rope so that they can be lowered to the ground for inspec tion and refilling. The coffee cans should be filled one-half to three quarters full of a mixture of one part of molasses to eight parts of water, plus a small amount of yeast. This mixture should be replaced when the molasses becomes sour or at about one-week intervals. The traps should be placed in the orchard in about the middle of May, and if possible, placed in trees known to have been wormy. Three to five traps are sufficient in most commer cial orchards and one trap is ade quate in small home orchards. These traps should be inspected at least every three days, and the date of the first occurrence of coddling moths should be noted. Many other insects will probably be found in the trap, consequently it is important to be certain of the identity of the cod dling moth. Time of Spraying The first spray should be applied 14 days after the first coddling moths are found in the trap. Seven days after the first spray is applied, the apples should be examined for worm entry. If excessive worm entry is found, the first spray was not ef fective, and a second spray should be applied immediately. Second brood—These traps should again be examined beginning about August first in the same manner as with the first brood. The eye spotted bud moth may be present at this time and care should be taken not to mistake this insect for the cod dling moth. If coddling moths are found, spray should be immediately applied (see third spray mixture).