40 STATE HORTICULTURAL SOCIETY. 



apples and plums. As to its effect on the curculio, I am of the opinion it 

 does no good unless applied very often, and then the insect will get in hi» 

 work between times. It is barely possible a few eggs deposited about the 

 time of spraying may be destroyed, but I think it not safe to depend upon 

 this treatment altogether if one wants a good crop of plums, for there is no 

 place for poison to lodge, as in the calyx of the apple. 



I raised a good crop of plums, but jarred the trees once and some days 

 twice. have no doubt that spraying pear trees will result beneficially. 



OTHER EXPERIENCE. 



Eugene Davis: I used one-third of a pound of Paris green to one barrel of 

 water, and this injured the foliage sometimes when not stirred actively. I 

 carried the barrel in a wagon and the work was not as well doue as it might 

 have been, but the result was good, much better than I believed apples ever 

 could be again. They were nearly free of the codlin moth's work except 

 some on under limbs. A few trees unsprayed yielded as many wormy apples 

 as usual. The expense was for one day's work and four pounds of Paris 

 green. Four or five barrels of apples paid for this, while the gain from 

 spraying was thirty or forty barrels. I would not on any account abandon 

 the practice. I applied the poison three or four days after the bloom fell, 

 and a shower occurred soon after. 



W. H. Parmelee: I have practiced spraying with good success for three 

 years. I first used a small hand-pump and a pound of London purple to a 

 barrel of water. The second year I reduced the poison and it was still effect- 

 ive. This year I used a pound to 120 gallons, and shall add thirty gallons 

 more next season. I apply when the trees are dry from the dew and when 

 no rain is impending. My trees are twenty-five years old and large, prob- 

 ably requiring two pailfuls to each tree. I drove through ''quartering" and 

 80 sprayed each tree from four directions. Two men can easily go over five 

 acres in a day. 



Prof. Taf t : I have put on a second hose, at the" opposite side of the pump, and 

 turned it back into the barrel, so making every stroke of the pump serve to 

 keep the mixture stirred I have found the Field and Gould pumps to be of 

 equal merit. One pound of Paris green in 200 gallons of water proved suffi- 

 cient this year. The best time for application is one week after the bloom 

 falls. Be careful to have the barrel wholly closed, to exclude dirt which eas- 

 ily clogs the pump or nozzle. In California gas-pipeis attached to the pumps 

 so as to get above the trees. Spraying is efficient against the curculio, if ap- 

 plied once a week for three or four weeks. White arsenic is pure, and for 

 spraying only one-fourth as much is necessary as of Paris green or London 

 purple, and its cost is but a fraction of that of the o'her substances. Lye 

 should be used with it, to make a solution. There is no danger from the 

 spray to the operator. 



E. H. Scott: With a power pump, two men can go over 1,700 trees per 

 day. I put on rubber gloves and coat, for safety and dryness. 



Prof. Taft : The curculio are killed, by spray, either the mature insect 

 when cutting the fruit to deposit the egg, or the larva when hatched, the 

 poison having settled into its hiding place in the wound. 



Thos. Wilde: I have used white arsenic for spraying, and regard it, in so- 

 lution, as safer than the other forms in suspension. When the solution 



