DESCRIPTION OF PLATE XXVIII. 



Regular winter spray work in the Rio Bonito orchard. Eight trees are here 

 being sprayed at one time, with 10 men and 4 liorses. The trees l^eing treated are 

 well advanced, the buds being much swollen, although not y(*t open. If work is 

 thoroughly done at this stage of bud development the results will commonly prove 

 satisfactory; but an active spray should be used, such as the eau celeste, or Bordeaux 

 mixture with a low percentage of lime and high percentage of copper sulphate. 

 Such sprays should not be applied, however, after the opening of the blossoms. 

 Earlier spraying is better, the chemicals in such cases doing less harm to the tree and 

 having a longer time to reach all spores that endanger the new growth. 



