Page Ticenty-four 



Cherry Fruit-Sawfly 

 And Its Control 



{Continutd from page 7) 



and results tabulated on the accompanying 

 table. 



Referring to the table, it will be noted 

 that the best control was secured with a 



BETTER FRUIT 



successfully controlled by the application 

 of a contact spray (nicotine sulfate), given 

 at the time the blossoms are opening. Ar- 

 senate of lead has not proven a satisfactory 

 remedy against this insect. Dusting with 

 Nicodust is thought to be a worthwhile 

 treatment. Destruction of wild plums and 

 willows in the vicinity of infested orchard? 

 is also recommended. 



Table Sho-uing Results of Sfrays for Control of Cherrf Fruit Sautfly 



contact spray, i. e., Nicotine sulfate 

 (Black Leaf 40) in combination with either 

 lime-sulfur or a miscible oil, (Blocks VI and 

 VII). Noting the date of application of 

 this spray (March 7-10), it will be remem- 

 bered that the sluggish adult sawflies are on 

 the trees at this time. Being naturally slow 

 moving, they are easily killed by the power- 

 ful contact spray. 



The contact msecticide, applied at thu 

 time the petals were opening, gave 

 much better control than did the stomach 

 poison treatment, (arsenate of lead) which 

 Mr. O'Gara recommended. Lead arsenate 

 applied as the blossoms are opening, whei 

 the petals were falling, and again a week 

 later, produced inferior control to the con- 

 tact sprays. In other words, at no time did 

 even three sprayings with the stomach poi- 

 son give as good results as did the one treat- 

 ment with the contact spray applied as the 

 blossoms were opening. 



The writer believes that dusting with 

 Nicodust, (5 per cent) would satisfactorily 

 control this pest, thus making the remedy 

 cheaper and quicker to apply. This point 

 will be tested this season. 



Another factor in the economic control 

 of the cherry fruit sawfly was mentioned 

 to the writer by Professor W. T. Clarke, 

 namely the destruction of alternate host 

 plants such as wild plums and willows in 

 the neighborhood of orchards. It has been 

 a common observation that this pest occurs 

 on trees adjacent to creek beds where there 

 is considerable wild growth of such plants. 



Conclusions — The results of this work 

 show that the cherry fruit sawfly can be 



Some may question the advisability of a 

 system of pruning which weakens the tree. 

 As a rule it would not be necessary to prune 

 the weaker trees as they usually arc heavy 

 bearers. Generally it is only trees with too 

 much vigor that are tardy or shy bearers. 

 Many varieties, especially in western Ore- 

 gon and Washington, grow entirely too 

 rampant and brushy, making them unfruit- 

 ful and hard to manage. It is much better 

 to have smaller trees filled with fruit than 

 large ones filled with brush. 



FOR quick.thoroughspraying 

 MyersSpray Pumps are un- 

 equalled. Hand Pump3, 

 with easy operating cog-gear 

 handle — Power Pumps with au- 

 tomatic pressure control — give 

 powerful, penetrating spray that 

 reaches every leaf and blossom. 

 The Myers line includes Pumpa 

 for Every Purpose, Hay Tools 

 and Door Hangers. Ask your 

 dealer or write us. 



April, 1922 



Lime Exploited 



THE STATE Department of Agriculture 

 of California recently gave warning to 

 the effect that it has frequently come upon 

 false and misleading advertisements of com- 

 panies who are exploiting the sale of agri- 

 cultural lime under the guise of fertilizer. 

 There are two ways in which deception oc- 

 curs: First, the word "fertilizer" is used 

 as a part of the company name, and second, 

 the substance advertised is described as a 

 material containing phosphoric acid and pot- 

 ash, two commonly recognized plant foods. 



The California chemistry experts have 

 many analyses of these so-called fertilizers 

 and in no case has any appreciable amount 

 of either phosphoric acid or potash been 

 found. In one instance the company's pub- 

 lished analysis of its product shows the fol- 

 lowing: alkalies, none: sulfuric anhydride, 

 none: and phosphoric anhyride, five hun- 

 dredths. This analysis is printed on one 

 side of the sack, while on the other side 

 there is printed in prominent letters, the 

 words: "phosphoric acid," "sulfur," and 

 "potassium," although the commercial value 

 of five hundredths of one per cent of phos- 

 phoric acid would not be more than five 

 or six cents, and the analysis would indicate 

 not even a trace of either potash or sulfur. 



"The Department," says the report, pro- 

 tests against the exploitation of lime and 

 marl under such false pretenses, and hopes 

 that at the next session of the legislature 

 some action will be taken to strengthen the 

 present fertilizer law in this respect. 



"On the other hand, the Department does 

 not wish to discourage the sale of any sub- 

 stance which is of real benefit to the agri- 

 cultural industry, but it feels that lime 

 should be sold as lime, and gypsum as gyp- 

 sum and each sold upon its own merits and 

 not advertised or labelled so as to give the 

 buyer the impression that he is obtaining not 

 only lime or gypsum, but in addition an 

 appreciable quantity of three commonly 

 recognized plant foods, nitrogen, phosphoric 

 acid, and potash, which determine the com- 

 mercial value of fertilizer." 



GROWERS in New York state have this year 

 made experiments in packing apples to com- 

 pete with the boxed apples of the Northwest. 

 One of the first test shipments consisted of three 

 carloads of the best Baldwins, packed in the 

 Genesee River valley in waterproof fibre boxes 

 holding 40 pounds. These boxes sold on arrival 

 in New York City at $2.25 a box. Two carloadi 

 were put into storage to test the practicability of 

 fibre boxes under storage conditioni. 



Reports from the West Okanogan Valley, in 

 Washington, indicate that 1000 acres of new 

 orchard will be planted there this spring. Most 

 of the plantings will be to commercial apples. 



Spokane, Washing"ton 



Buy From the Local 



Portland, Oregon 

 Mitchell Dealer 



You do a double favor by mentlon'n^ 

 Better Fruit when answering advertise- 

 ments you find here. 



