Page 24 



BETTER FRUIT 



February, 1021 



in assisting wherever possible for the 

 production of better fruit. 



All neglected orchards or plants 

 which were known to be a source of 

 public nuisance were sprayed by the 

 owner, the state or cut down. Coop- 

 eration in this matter was given by 

 fruit growers desiring to grow good 

 fruit to stimulate interest in this pest 

 control campaign. Five thousand copies 

 of an insect control poster were distrib- 

 uted in stores, depots and other public 

 places and given to fruit growers who 

 desired a copy of the same. In addi- 

 tion to giving the life history of the 

 codling moth, San Jose scale, peach 

 twig borer and red spider, this poster 

 gave information in regard to insecti- 

 cides and a time of applying them for 

 each one of these pests. Throughout 



the pest control campaign three out- 

 standing facts were constantly kept be- 

 fore the mind of the growers. These 

 facts are: (1) proper spray material; 

 (2) proper time of application; (3) 

 thorough work in applying. 



The Bureau of Plant Industry has 

 frequently been informed by insecticide 

 dealers and dealers handling spray 

 equipment that they sold more spray 

 material and more modern spray equip- 

 ment during 1920 than any previous 

 year. The prospective high prices for 

 fruit and a determined effort on the 

 part of the fruit growers to reduce the 

 loss by worms to the minimum were 

 factors which brought splendid coop- 

 erative action in this matter in connec- 

 tion with the newly organized pest 

 control work. 



use: 



Nitrate of Soda 



(CHILIAN) 



WHY? 



BECAUSE, it is a plant food increasing 

 the vigor of your orchards. 



BECAUSE, its application is recom- 

 mended by all government 

 authorities and experiment 

 stations in the Northwest. 



BECAUSE, it is the cheapest source of 

 nitrogen so essential to plant 

 life. 



The early application is pro- 

 ductive of best results. 



For literature and quotations write or wire: 



The Nitrate Agencies Co. 



8th Floor, Hoge Building 



Seattle, Washington 



Test of Spray Material. 



Practically all of the standard makes 

 of arsenate of lead were used and 

 tested. All proved good. 



During the spraying season of 1920, 

 inspectors of this bureau endeavored to 

 make an official Baume test of the con- 

 centrated lime-sulphur solution which 

 was used in their district and also a 

 test of the spray material in the spray 

 tank of commercial sprayers and grow- 

 ers. In all 534 tests were made. The 

 records show that the lime-sulphur as 

 it came from the factory average 33° 

 Baume and the average test in the 

 spray tank was 5° Baume. When a 

 commercial sprayer or grower was 

 found with a less degree he was im- 

 mediately urged to increase the strength. 

 This met with ready response. Chemi- 

 cal analysis of lime-sulphur solution 

 were made by the state chemist in co- 

 operation with this bureau and practi- 

 cally all samples show satisfactory 

 analysis. 



. Results. 



The records of the inspectors of this 

 bureau show that in orchards properly 

 sprayed at the right time less than 1 per 

 cent worm damage, ranging as high as 

 60 per cent in orchards improperly 

 sprayed and cared for. A detailed state- 

 ment is given in the following table: 



Per Cent 



Bruise Per Cent 



Per Cent Per Cent Undersize Loss All 



District Scale Worms Frost Causes 



Perkins 2 10 7 19 



Bcatty 2 5 7 14 



Ichleberger 5 5 10 20 



Ustick 10 10 7 27 



Wood Station... 10 10 10 30 



Manvillc Station. 10 10 15 35 



Yost 3 10 10 23 



ISissi-11 2 5 7 14 



Meridian 2 3 6 11 



Onveiler 2 3 7 12 



McF.lmv 10 5 10 25 



Victor Station... 10 5 8 23 



McDermott 4 2 3 9 



Noble 1 2 1 4 



Sonna 1 2 9 12 



Ten .Mile 1 2 15 18 



Kuna 7 5 20 32 



Sandpolnt 1 820 21 



Council 5 3 8 



Bonners Ferry.. .*10 t2 §20 32 



Coeur d'Alene... 2 6 8 



Moscow JO-100 3 28 



Lewiston 5 10 T50 65 



New Plymouth.. . 1 20 4 25 



Payette 1 6 "4 11 



Parma 1- 11 2 14 



Emmett 1 4 tf5 10 



Grangeville 7 3 H15 25 



Twin Falls 30 5 35 



Blackfoot _0 10 _4 14__ 



3.6 ~lJ~ 9.8 20T 



•Oyster Shell; t Codling Moth; J Average 



25%; § Scab; 'Hail; "Frost 2, Bruise 2; 

 tt Hail 3, Frost 2. 



For 1920 the loss due to worms for 

 the entire state shows an average of 

 7.5 per cent with an additional loss also 

 of 3.6 per cent due to scale. Thus it 

 is seen that the worm loss was reduced 

 50 per cent over the previous year and 

 the scale loss considerably more. It 

 should be borne in mind that these fig- 

 ures represent the average and that 

 many conscientious fruit growers had 

 practically no loss due to worms or 

 scale. 



The pest control campaign for 1921 is 

 planned on a similar basis and by 

 earnest cooperation on the part of all 

 fruit growers the damage from worms 

 and scale for the state is expected to be 

 materially reduced over the results of 

 1920. 



V'HEN WRITING ADVERTISERS ME 



