TWENTY-NINTH FRUIT-GROWERS' CONVENTION. 



151 



does not seem to warrant its use. As usual, the reports from the use 

 of this spray were conflicting, some growers reporting a total failure, 

 while others claimed an entire success. Some report that a spray con- 

 sisting of 1 pound of paris green to 25 gallons of Avater, with 20 pounds 

 of lime, has killed the worms after a few days. I believe the cause of 

 failure is mostly due to the drenching of trees instead of using a mist 

 spray. I have examined sprayed orchards and have found but little 

 poison on the leaves, generally along the lower edge of the leaf. It is 

 no use spraying trees a la buggy-washing — better save money and time. 

 Good results have been obtained by the mesh-wire trap when properly 

 applied to the tree. Here again great care must be taken to see that 

 the trap is correctly adjusted. 



Cutivorms. — Reports from all over the State regarding the appear- 

 ance of and damage by cutworms, the larvje of the owlet moths, have 

 been received. In this case Ave may say that where there is plenty of 

 food we find plenty of consumers, for this year produced enough food 

 (weeds and grasses) to warrant the presence of myriads. When the 

 natural food is suddenly destroyed (plowed under), new pastures are 

 hunted by these crawlers and are generally found in succulent vege- 

 tables and tender foliage, and then the trouble begins. 



Tent Caterpillars (Clisiocampa sp.). — Early in the season my atten- 

 tion was called to the vast amount of tent caterpillars which were 

 attacking prune and apricot trees in the lower foothill regions. In 

 many instances the larvae stripped the trees of their foliage. Such 

 work is no doubt the result of neglect. If the tents containing the 

 caterpillars had been gathered the previous season, it would have 

 checked the pest considerably. 



Leaf Rollers. — Among this group we have a species of Caccecia which 

 Avas rather abundant and caused much alarm. It is a green caterpillar, 

 with black head, and often is taken for a cankerworm, but its move- 

 ments and habit of living in rolled-up leaves at once dispel this error. 



Gahhage-Worms. — Although this pest has been reported again at 

 intervals, Ave find that it is not as plentiful as in previous years; pos- 

 sibly the parasite {Apanteles glomeratus) is reducing it. 



OaJi-Tree Caterpillar {Phryganidea californica). — This has been a 

 seasonal year for this pest, and a great deal of inquiry has been made 

 and labor performed. Seasonal as this pest is and attacking mostly its 

 natural food, the li\^e oak, the damage is only temporary and local. 

 Remedies in this case are hard to suggest, and spraying with poison is 

 too expensiA^e an undertaking. 



Pear or Cherry Slug {Eriocampa cerasi). — This insect takes its name 

 from the close resemblance of the larva to a slug. The larva destroys 



