EXPERIMENT STATION REPORT. 425 



<Jisease observed this season, and as the plants were but lightly in- 

 ■f ested there was but little difference observed in favor of the sprayed 

 *elt. 



Among the crossed tomatoes the leaf spot developed to a much 

 ..greater extent, many plants being nearly defoliated before the end of 

 .the season. There was almost no fruit rot the present season. 



Chard. — Belt 5 (2 rows), Plot IV., Series V., was sprayed four 

 times with soda-bordeaux upon the following dates : July 20th, 

 .29th ; August 8th and 27th. Considerable leaf spot ( Cercospora beticola 

 Sacc. ) had develoj^ed upon the sprayed rows by August 27th, but to 

 a much less extent than upon the unsprayed. The foliage of all was 

 badly cut up by hail early in July. 



The tops of all plants were removed about September 1st, and the 

 subsequent growth suffered much less from blight. 



^sculus. — Several three year-old horse-chestnut trees, alternating 

 •with untreated ones, were sprayed with soda-bordeaux on June 1 7th, 

 loth ; July 29th ; August 8th and 27th. The contrast between the 

 unsprayed and sprayed plants was very decided, the former being 

 more or less defoliated before the end of the season. Like results 

 Avere obtained in 1900. ' 



Grapes. — The middle third of the arbor at the farm-house received 

 five applications upon the following dates : June 8th, 17th, 28th ; 

 July loth and 29tb. Ordinary bordeaux was used for the first spray- 

 ing, soda-bordeaux for the remainder. The mildew was practically 

 absent from the entire arbor. The sprayed foliage was seriously 

 .^burned by the fungicide. 



Kerosene £inalsioii. 



One belt of cucumbers and one of chard were sprayed three times 

 with kerosene emulsion of half the standard strength — that is one 

 ounce of ivory soap, two pints of kerosene to eight gallons of water. 

 There was no checking of the blights and the plants remained un- 

 harmed by the emulsion. 



One-third of the verbenas in the ornamental grounds were sprayed 

 with the same emulsion for the mildew upon August 1st, 8th and 

 27th. The conditions were highly favorable for the fungus during 

 >the first half of the month, and mildewed leaves were numerous at 

 the beginning of the experiment. After two sprayings the treated 

 plants were less affected than elsewhere and had a glossy appearance, 

 iipparently due to the emulsion. From the latter part of August to 



