10 MISCELLANEOUS PAPERS. 



early attack of the scald fungus (Guignardia). while on the spraj^ed plats 

 but little blasted fruit was to be seen. In many cases at least one-half 

 of the fruit is destroyed by blasting, the 3^oung fruits being attacked 

 by the fungus at about the time the blossoms begin to fall. In order 

 to prevent this, one of the applications of Bordeaux mixture should be 

 made immediateh' after the vines have reached their maximum flowering- 

 stage, as a dela}' of a week at this time may make a difference of from 

 25 to 50 per cent in the amount of fruit destro3xd by blasting. 



A very striking illustration of this fact w^as observed upon another 

 bog where one plat had been sprayed on eluly 1 and another adjoining 

 was not spraj^ed until July 8. On the plat sprayed on July 1. when 

 the vines had just reached their maximum flowering condition, but 

 very little blasted fruit could be found, whereas on the plat which had 

 been spra^^ed on July 8 about one-half of the fruit had been blasted. 

 This and other observations indicate the exceedingly great importance 

 of prompt and thorough early applications of the fungicide. In case 

 the bog to be sprayed is flooded for insects early in June, the first 

 application of Bordeaux mixture should be made within a day or two 

 after the water is removed, the second application just as the plants 

 begin flowering, and the third just after the majorit}^ of the blossoms 

 have appeared, which in ordinary seasons will be about the first of July. 



EFFECT OF SPRAYING PLANTS WHEN IN FULL BLOOM. 



In order to determine whether any injury would result from spraying 

 the plants while in bloom, part of one plat was spra3'ed when in full 

 bloom, and the amount of fruit which set upon this plat Avas carefully 

 compared with that on adjoining plats which had not been sprayed. 

 No difference could be noted in the amount of fruit on the sprayed and 

 on the unsprayed plats. In addition, certain bunches of vines were 

 dipped in Bordeaux mixture when in full bloom, but without any 

 apparent injury to the fruit. From our observations and experiments 

 it does not appear that there is much danger of loss from spra^^ing vines 

 while in bloom. What little loss might possibly arise from this cause 

 would be very slight compared with the amount of loss from blasted 

 fruit in case the spraying' was delayed too long. 



KEEPING QUALITIES OF SPRAYED AND UNSPRAYED FRUIT. 



A comparison of the sprayed and unsprayed fruit at the time of 

 picking does not give an exact idea of the amount of profit derived 

 from the treatment, as there was a much greater loss of unspraA^ed than 

 of spra3^ed fruit between the time of picking and the time the berries 

 were marketed. 



In order to compare the keeping qualities of the sprayed and 

 unsprayed fruit, as well as unsprayed fruit which had been treated 



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