NOTES AND ABSTRACTS. 



877 



An analogous disease of Tomatos has been studied, and designated as 

 " Tomato rosette." 



A similar disease on forcing House Lettuce is being studied. The 

 analogy in symptoms exhibited to those described for Potatos is so 

 striking that almost anyone who has studied the Potato trouble would 

 designate this "rosette in Lettuce." — M. C. C. 



Potato-spray ingr experiments in 1903. By F. C. Stewart, H. J. 

 Eustace, and F. A. Sirrine (U.S.A. Agr. Exp. Stn, Geneva, N.Y., Bull. 

 241, Dec. 1903 ; with 12 plates). — This bulletin gives the result of the second 

 year's work on the ten-year Potato-spraying experiments begun in 1902, 

 also an account of six business experiments conducted by farmers. 



At Geneva the rows sprayed three times yielded at the rate of 262, 

 those sprayed five times 292, and those not sprayed 174. Thus three 

 sprayings increased the yield 88 bushels per acre, and five sprayings 118 

 bushels. 



The farmer's business experiments were designed to determine the 

 actual profit in spraying Potatos under ordinary farm conditions. The 

 increase in yield was determined, and an account kept of all expense. On 

 the total area of 61 \ acres sprayed in the six experiments there was a 

 total increase in yield of 3,746 bushels, or an average of 61*24 bushels per 

 acre. At 50 cents per bushel this increase was worth 1,873 dollars. Sub- 

 tracting from this the total expense of the spraying, 296*49 dollars, there 

 is a remainder of 1,576*51 dollars, which is the total net profit. This is 

 at the rate of 25*77 dollars per acre. 



It is estimated that the loss from Potato blight in New York in 1903 

 was fifty bushels per acre on the average. The area devoted to Potatos 

 in the State is 396,000 acres. Hence the total loss sustained by New 

 York farmers in a single season was nearly ten million dollars. 



The spraying was done with Bordeaux mixture. — M. C. C. 



Potato Spraying Experiments. By F. C. Stewart, H. J. Eustace, 

 and F. A. Sirrine (U.S.A. Exp. Stn. New York, Bull. No. 221, 1902, pp. 

 235-263). — The station has undertaken to determine how much the 

 yield of Potatos may be increased, on the average, by spraying the 

 plants with Bordeaux mixture for ten consecutive seasons ; also, which is 

 more profitable, to spray every two weeks throughout the growing season, 

 or to make but three applications. The experiments are to be carried 

 on in two localities, viz. on the station farm at Geneva and on Long 

 Island. At each place the area of the experiment fields is to be three-tenths 

 of an acre each season. Each year, or as often as advisable, there will be 

 published a bulletin giving the results up to date ; also other information 

 on the spraying of Potatos. The present bulletin gives the results of the 

 first year's work. At Geneva the rows sprayed three times yielded at the 

 rate of 317^ bushels per acre ; those sprayed seven times 342^ ; and those 

 not sprayed, 219. Thus three sprayings increased the yield 98^ bushels 

 per acre, and seven sprayings 123| bushels. The increased yield on 

 sprayed rows was due chiefly to the prevention of late blight. 



On Long Island the rows sprayed three times yielded at the rate of 

 295 J bushels per acre, those sprayed seven times 312 J, and those not 



