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Show OREM-GENEVA TIMES SPRAY PROGRAM FOR FRUITGROWERS All authorities agree that DDT is surprisingly effective in controlling con-trolling codling moth. Authorities Authori-ties disagree, however, as to the advisability of using DDT as an orchid spray for control of codling cod-ling moth. The ones who advise against its use point out that orchard or-chard mites and aphids are not controlled by DDT, and that in far too many cases these pests have done for more damage than codling moth would do without the use of DDT. Authorities who are willing to recommend the use of DDT in pear and apple orchards point out that mites and aphids can be controlled either before the DDT spray is applied or by adding ad-ding a mite and aphid killing material to the DDT or by applying ap-plying a separate spray especially especi-ally for control of these insects. Since results of spraying for mites and aphids control either before or after are combined with DDT sprays have always been favorable, few, if any, authorities au-thorities are willing to guarantee guaran-tee satisfactory results from DDT spray programs. However, since there is such wide interest in the use of this new spray,- some recommendations rec-ommendations which give most promise and which have been tried with satisfaction one year under special conditions are given giv-en here. DDT In Utah County Apple Orchards Practically all apple orchards in Utah county are more or less infested with bud mites and mildew. mil-dew. Neither of these orchard pests are controlled by oil sprays. Brown mite, one of the most destructive orchard mites and one which becomes serious when DDT sprays are used, is easily controlled by dormant oil sprays. But brown mite can be controlled controll-ed by sulphur sprays applied just as the over wintering mite egfs are hatched. The other serious orchard mite is the two-spotted two-spotted mite or common red spider. It is not controlled with dormant sprays, and is belter controlled with , sulphii)- Hum with oil sprays. Blister mite is controlled effectively in this area only with lime sulphur. Aphids require the additions of a special killing agent such as nicotine sulphate or rotenone or others now on the market. With these facts in mind, a sureossful spray program including includ-ing DDT should bo plann. d ac cording to the following: With these tacrs in mmd, it should not be too much to expect any of the following spray programs pro-grams including DDT for codling cod-ling moth control to produce good results. Spray Program No. 1 ( If all the above mentioned pests are to be controlled. Delayed dormant spray applied ap-plied just as buds break well and show about a quarter inch i of green tip. Spray 8 gallons of! liquid lime sulphur plus onei pint nicotine sulphate, (Nicotine sulphate only if air temperature is 70 degrees or above) 5 to-lenorie. to-lenorie. or other aphid killing materials according to manu facturer's direction to make 100 I gallons of spray. . Pink bud spray applied just before blossoms open. Two gal lons liquid lime sulphur plus 4 lor 5 pounds wettable sulphur I to make 100 gallons of spray. I Calyx spray applied as last I pettals are dropping. Five i pounds wet 'able sulphur to j make 100 gallons of spray, i First cover spray applied just as codling moth eggs begin to hatch. Two pounds 50 wettable DDT. Second cover spray from ten to twenty davs after first cover. Same mixture as for first cover. If weather is warm and brieht. follow first cover by shorter period than if weather is cool and s'tormy. Third cover applied just as eggs of second brood begin to hatch. Usually late July or early August. Same mixture as other covers. Note: Careful watch should be kept over orchard after sec ond cover. If mites or aphids show signs of becoming numerous, numer-ous, a spray composed of 1 gallon gal-lon summer oil plus other mite and aphid killing materials according ac-cording to manufacturer's directions di-rections should be applied between be-tween second and third cover and before mites or aphids become be-come numerous enough to do notieable damage. Spray Program No. 2. If blister mites are not a problem prob-lem in the orchard, eliminate the first spray in program No. 1 and follow that program beginning begin-ning with the pink bud spray. Spray Program No. 3.: If mildew is not a problem in the orchard and brown mites eirgs are not numerous, eliminate elimi-nate first two sprays from 'program 'pro-gram No. 1 and start with calyx spray of that program. Note: Before you eliminate the pink bud spray, be certain that brown mite is not a problem in the orchard. If you should j eliminate the pink bud spray land then find that brown mites I or two spotted mites are giving j trouble later, two oil and mite killing faterial sprays may be needed between second and i third DDT sprays, i DDT in Utah County Pear Orchards I Some old pear orchards. ! especially if they are infested with blister mites, will require i the same spray as given in the ! No. 1 spray program for apples. Most pear orchards in the 'county can be best sprayed according ac-cording to the following schedule: sched-ule: : Soray Progrom for Pear Orchards Free from I Blister Mites ' Delayed dormant spray applied ap-plied just as. buds begin to break showing only a slight tip of ureen. Five gallon dormant oil to 100 gallon spray. First cover spray applied just i as codling moth eggs begin to ! hatch. Two pounds 50 wettable DDT to 100 gallon spray. ! Second cover spray applied ten to twenty days after first spray according to weather as noted in apple spray program. Two pounds 50 wettable DDT to 100 gallons water. Note: If either rust mite or brown mite shows signs of becoming be-coming numerous (presence of rust mite can be noted by slight browning of leaves. Browning may become serious if mites are not controlled soon) add one gallon summer oil to this spray. Third cover spray applied iust as second brood codling moth eggs begin to hatch. About the last of July or first of Aug ust. j It must be remembered that when DDI is used in the spray program a.; outlined above, orchard or-chard mites and aphids become the big problem. Careful check of the orchard must bo made to see that they do not become ! numerous enough to cause dam- age. Most care should be given io watching for these insects be- tween the second DDT spray and ! the third o:iq. Apply sprays for their control any time they begin be-gin to show dangerous numbers. Use of DDT in other orchards will be considered later. CLARENCE D. ASHTON Ass'.t County Agent. 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