pressure. A coarse spray is likely to run off the tree and to 

 leave the critical parts of leaves and flower buds without the 

 necessary protection, and may possibly do more or less harm 

 through burning. 



If red bugs are present 40 per cent nicotine should be added 

 to this spray at the rate of 1 to 500 (three-fourths of a pint to 

 each 50 gallons). 



The question of machinery in this application is the same as 

 that discussed in connection with the first treatment. 



Third Treatment. 



Beginning when the blossoms are three-fourths or more off 

 the trees, and before the blossom ends of the apples have closed, 

 there is a period of from five to seven days in which mixtures 

 may be applied which will tend to protect the trees from codling 

 moth, plum curculio, red bug, general leaf feeders, apple scab 

 and other fungous diseases. At this period the arsenical poison 

 may be placed in the blossom end of the apple, where it will 

 remain throughout the season ready for the apple worm when 

 it tries to enter the fruit through this door. The young fruit 

 may be so thoroughly coated as to protect it from the attacks 

 of the plum curculio, which will normally come a few days 

 later. If the red bugs have not previously been destroyed they 

 may be killed by adding to the ordinary mixture 40 per cent 

 nicotine. At this time that coating which will protect the fruit 

 and foliage from canker worms and other leaf feeders and fun- 

 gous diseases for the next week or ten days may be made. 



The mixture which is probably best is composed of 1 gallon 

 of standard liquid lime-sulphur concentrate to 40 gallons of 

 water, plus 1| pounds of powdered arsenate of lead or 3 pounds 

 of the paste to each 50 gallons of the mixture. If red bug is to 

 be fought, 40 per cent nicotine should be added to the mixture 

 at the rate of three-fourths of a pint to 50 gallons. 



The material should be applied as a fine mist. Effort should 

 be made to give to the fruit and foliage a thorough coating, 

 and especial attention must be given to coating thoroughly the 

 spreading lips of the blossom end of the apple. Again, the 

 question of machinery for applying is one which depends upon 



