SPRAYS AND OTHER MEANS OF CONTROL 



1875 



Western Tomato Blight 



Set out strong plants close together, or 

 plant the seed thickly in the rows. Give 

 best of care, shade and plenty of water. 

 You will probably lessen the blight. 



Potato Scab 



Soak seed for two hours in formalin 

 (one pound to 30 gallons of water), then 

 cut and plant. Do not plant in soil where 

 scabby potatoes were grown. 



Root Maggot of Badish, Turnip, Cab- 

 bage, Etc. 



Spray soil with carbolated lime before 

 maggots appear. Repeat often. Cultivate 

 well after crop is removed. Place a three- 

 inch tarred paper collar on young cabbage 

 plants. 



Cabbage Worms 



Paris green one part, bran 40 parts. 

 Mix well. Dust the plants before worms 

 eat in. 



Climbing Cutworms 



Garden Cutworms 



Paris green one part, bran 40 parts. 

 Make a mash by adding water. Season 

 with a little molasses, stale beer or salt. 

 Scatter by spoonfuls before planting or 

 among plants. 



Woolly Aphis on Roots 



Expose the roots as much as practicable 

 and spray with tobacco, kerosene emul- 

 sion or sulphur-lime. Root treatment is 

 not completely reliable. 



W. S. C. 



FUMIGATIOIV FOR IVURSERY 



For nursery stock, use one ounce cy- 

 anide to 100 cubic feet. 



For grafts and scions, use two-thirds 

 ounce cyanide to 100 cubic feet. 



To every ounce of pure potassium 

 cyanide (poison) add one and one-half 

 liquid ounces sulphuric acid diluted with 

 two and one-half ounces water. The gas 

 generated is extremely poisonous. Fumi- 

 gate 30 to 45 minutes. 



SPRAYIIVO CALENDAR 



P. J. O'Gara 



The following information was issued 

 from the office of the pathologist for the 



Rogue River valley, Oregon, and will be 

 adequate for all similar situations: 



Attention is called to the part devoted 

 to the use of lime-sulphur in the spring. 

 It will be seen that black-leaf 40 is com- 

 bined with lime-sulphur where aphides 

 must be combatted. This combination 

 makes a rather costly spray, but if prop- 

 erly applied will save spraying later on 

 for aphides. The rosy aphis is a serious 

 pest because it attacks the fruit clusters. 



Fig. 1. At this stage of development, just be- 

 fore the blossom clusters open, the orchard 

 should be sprayed for scab, with dilute lime- 

 sulphur or Bordeaux. Arsenate of lead is 

 added for control of insects. 



(Purdue Experiment Station) 



The nitrate of soda spray for stimulat- 

 ing shy bearing trees has also been in- 

 cluded. As indicated, the nitrate of soda 

 may be mixed with the lime-sulphur, espe- 

 cially in the spraying of pears, or in 

 spraying apples where it is not necessary 

 to delay lime-sulphur spraying until the 

 buds begin to swell. 



The iron-sulphide spray has been omit- 

 ted and in its place atomic sulphur is ad- 

 vised. The iron sulphide spray is very 

 effective, but the trouble of making it up 

 has sometimes deterred fruit growers 

 from doing the necessary spraying in the 

 prevention of apple mildew. 



