February, 1921 



BETTER FRUIT 



Page 11 



When the evening temperature registers 

 60 degrees or above, it is time to apply 

 this spray. As a general rule, this date 

 will follow the calyx spray by about 

 three and one-half to four and one- 

 half weeks in Eastern and Southern 

 Oregon; four to five weeks in the Hood 

 River Valley, and five to six weeks in 

 the Willamette Valley. In a bearing 

 orchard, it is never advisable to omit 

 this spray. 



Generally speaking, our most serious 

 codling moth injury occurs in late sum- 

 mer resulting in the costly "September 

 sting." To assist in minimizing this in- 

 jury it seems advisable to increase the 

 poison dosage by one-half in the last 

 summer application, using 4.5-200 in 

 spray 8. The element of time of appli- 

 cation is of first importance and will 

 vary greatly with the season, locality, 

 and local conditions. Where possible, 

 if in doubt, consult the fruit inspector, 

 county agent, or some official who is in 

 a position to know when to apply these 

 summer sprays. In Southern Oregon 

 the rule is, "Keep the fruit covered 

 with spray." 



Aphids or Plant Lice: Nicotine sul- 

 phate, 40 per cent, added to Spray No. 

 2, at the rate of two-thirds pint to 100 

 gallons of the dilute spray, is the stand- 

 ard application for control of plant lice. 

 As aphids are nearly always present in 

 the orchard, this application is gener- 

 ally advisable. Reinfestation of apples 

 may take place in June, in which case, 

 add nicotine to Spray No. G. In the 

 case of cherry trees ants carry aphids 

 up to reinfcst the trees. Band the trees 

 with Tanglefoot or other material tc 

 prevent this. 



Bud Moth: This is a chocolate-brown 

 worm one-third inch long, found in a 

 mass of webbed leaves at tip of twig. 

 On apple and pear add lead arsenate 

 4-200 to Sprays No. 2 and 3. On stone 



CARE and efficient 

 methods are nec- 

 essary to grow 

 and maintain a profit- 

 able orchard. Your bank 

 account needs the same 

 careful attention to pro- 

 vide the greatest bene- 

 fit to you. 



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 through its size and the 

 comprehensiveness of its 

 service, is able to offer 

 you the most in banking 

 service. 



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fruits add neutral lead arsenate 7-100 

 to Spray No. 2. Application is advisable 

 only where pest has done injury the 

 past season. 



Pear and Cherry Slugs: These are 

 greenish-brown, slimy, slug-like larvae, 

 which skeletonize foliage of cherry and 

 pear. On pear use Spray No. 5, adding 

 lead arsenate 4-200. On cherry use 

 Spray No. 4, adding neutral arsenate of 

 lend, 0-100. Road dust, air-slaked lime, 

 sulphur, or any finely divided powder 

 applied as a dust is also very effective. 



Blister Mile: This is usually serious 

 only on pears. Use Spray No. 1, ami 

 be very thorough in applying it. Th'j 

 sprayed trees should appear as if white- 

 washed. The ideal control for blister 

 mite is a spray applied in the fall (see 

 Spray No. 9). When thoroughly done, 

 one application in three years is gen- 

 erally sufficient for satisfactory con- 

 trol. 



Leaf Rollers (on apple) : Most com- 

 mon in Northern and Eastern Oregon. 

 Use miscible oil emulsion recommended 

 in Spray No. 1. For maximum effi- 

 ciency, apply during period of settled 

 weather. Application is advisable only 

 where one is reasonably sure of pres- 

 ence of pest. 



Fruit Worms (on pear) : Serious in 

 Valley. Use Spray No. 3. Lead arsen- 

 ate in the pink. 



Wooly Apple Aphis: This pest occurs 

 as clumps or masses of cotton-like 

 patches about wounds, cracks, and 

 galled areas of bark, or on water 

 sprouts and exposed rootlets. Beneath 

 this cottony mass are wriggling col- 

 onies of soft brown aphids. When 

 thoroughly established, this is a very 

 serious pest in apple trees. Mark in- 

 fested trees for special treatment. 



Borers: They are not controlled by 

 sprays, but require special treatment. 



Fruit Tree Leaf Syneta: This is a 

 small, elongate, active, creamy-white 

 beetle. Feeds on buds, unfolding 

 leaves, blossom petals, and developing 

 fruit, making unsightly holes. Use the 

 neutral arsenate of lead, 7-100, in sprays 

 as indicated. 



Cherry Fruit Maggot: This is a 

 small, white cylindrical maggot found 

 feeding inside the fruit. If lead arsen- 

 ate sprays are applied for the control 

 of cherry slug, they will also ordinarily 

 control the maggot. If it is desired to 

 apply a special spray, use lead arsenate, 

 3-50, plus 2 gallons of cheap syrup. 

 This should be applied at the rate of 

 one pint to the tree. Us a hand pump 

 throwing a fine misty spray which will 

 deposit minute droplets on the outer 

 leaves. This is to poison the fly which 

 produces the maggot. Treat the trees 

 just as the fruit begins to color well. 



Peach and Prune Twig Miner: A 

 common and serious pest of prune and 

 peach. Occurs as a chocolate-brown 

 worm one-quarter inch in length found 

 in tunnels at the base of a wilted tip or 

 fruit spur. Worms also tunnel into 

 young fruit, causing it to drop. Sum- 

 mer applications are ineffective. Use 



spray indicated. Applications are gen- 

 erally advisable as the pest is usually 

 present. 



More complete information on particu- 

 lar pests and diseases, and also directions 

 for making any particular spray mate- 

 rial, may be secured by writing to the 

 Oregon Agricultural College at Corval- 

 lis. If information is desired regarding 

 the identity of any insect or disease, 

 send complete description, together 

 with specimens of disease and of the 

 affected plants, if possible. Wrap the 

 material in a container which will not 

 be crushed in the mails. Put your 

 name and address on the package. 



Garden Tractor 



Takes the Place of 

 A Horse 



Plows, Harrows, Culti- 

 vates— Operates 

 CreamSeparator, 

 1 k Pump, Washing 

 Machine, 

 Etc. 



Beeman 

 Garden 

 Tractor 



Is Ideal for the Rapid Cultivation of 



Berries 

 Potatoes 

 orJiny Root Crop 



Will also do anything that a 4-horse- 

 power stationary gasoline engine 

 will do. 



Efficient and speedy for making 

 irrigation rills in the orchard. 



A necessity for any fruit or berry 

 grower whether he uses horses or a 

 big tractor. 



Write for catalog and full informa- 

 tion as to what this machine will do. 



Wentworth & Irwin 



S. E. Cor. Second and Taylor 

 PORTLAND, OREGON 



NG ADVERTISERS MENTION BETTER 



