REPORT OF COMMITTEE ON PUBLICATION 



235 



In the sprayed plots, one spraying by hand in late July had only 1.43 per 

 cent wormy berries; where two hand applications were made 2.1 per cent of 

 the grapes were wormy, and where three hand sprayings were given only 

 .86 per cent of the harvested crop was wormy. Where the same spray was 

 applied with special fixed spars, making three applications during the season, 

 1.98 per cent of the crop was wormy. Comparing the results of previous 

 years in similar experiments, these fixed spars approach hand spraying in 

 thoroughness, with a considerable saving in the labor cost of applying 

 the spray. 



Fig. 12. Stage of bunches at which to spray. 



Two thorough applications given at proper times will control the berry 

 worm. The first application should be given just after the grapes bloom, 

 taking Concords as the standard variety, and a second heavy, thorough 

 spraying six or seven weeks later, usually about the first week in August 

 in Northern Ohio. These sprayings just precede the hatching time of the 

 grape berry moth eggs and the newly hatched larvae find a meal of poison 

 awaiting them if the grapes are properly sprayed. Gathering the anchored 

 leaves in the soil, upon which the berry worms have spun up in the fall, 

 and destroying them, will also assist materially in controlling the pest; also 

 plowing in May will crush many of the pupae and bury them so deep that 

 emerging moths cannot reach the surface. 



