| Show wr in SPRAY CONTROLS GRAPE ROT vines should be sprayed with bordeaux mixture in sp spring ring as buds begin to swell by JOHN H CARMODY kentucky experiment peri ment station frequent complaint Is reaching deachin the experiment station I 1 regarding eg arding a disease that IS 19 attacking the grapes upon investigation vesti gation this trouble is usually found to be duo due to a par parasitic is I 1 itic fu fonsus a gu s known as mack black rot this is by no means a new trouble as it is very general lu ili all ot of the sections abere the grape Is grown black rot first shows itself upon the berries and leaves usually the berries are most seriously affected and the disease manifests itself upon the latter by small clear cut brown spots these spots gradually enlarge until all of the berries on the stem stein are affected it is a noticeable tact fact that the diseased berries do not shed but continue to 4 barrel pump suitable for spraying fruit garden or home orchard cling to the tine lne long after the grape season Is past it Is needless to say fly that this serves as a 0 means Ni whereby herebY the disease Is carried over from one season to another fortunately for the persons interested in grope grape culture this aliis trouble can be readily kept in control where only a few vines are grown the alce tice of bagging the bundles bunches in order to ward off the spore may be used she bunches should be covered early in the season after the blooming season Is over the ordinary paper sacks do very well the principal point to keep in mind is to pin the top of the bag securely so that it will exclude the entrance of the spores it is also B il good plan to clean the VI vineyard Devard ol oi I 1 tiny any old litter SIMI sue ns as leaves arld pruned canes as soon as convenient spraying with bor bordeaux borde deauN aus mixture li Is perhaps one of the most reliable means of control where the trouble Is known to exist the viries vines should he be thoroughly sprayed in tle tl e spring jut just us the buds are swelling this application should be repeated t everol times luring during the summer the number of applications will mill depend somewhat on the nature of the season if the season happens to be dry a fewer number of applications will be needed than ihan if the season Is warm and moist bordeaux mixture for this purpose may be prepared as follows dissolve four pounds of copper sulphate blue stone and tour four pounds of stone lime ilme separately in 25 gallons of x ater then pour the two together into a 50 gallon barrel and stir thoroughly the best way to dissolve the copper sulphate iq ii to suspend it in a cloth bag in water oer night care should be taken not to let it come in contact with tiny any metal pumps should be brass lined ft here bordeaux borde aus aum is to be used |
