392 REroRT of the Mycologist of the 



with Bordeaux mixture containing no Paris green.* This sug- 

 gested the idea that perhaps Paris green might be dispensed with 

 and the Bordeaux mixture alone used for both "■ bugs " and 

 blight. The experiment was planned to test the value of Bor- 

 deaux mixture used without Paris green. 



Plan of the experiment. — ^In an experiment in which the char- 

 acter of the soil is an important factor, long narrow plats are 

 likely to give more reliable results than square plats or plats in 

 which the length and breadth are nearly equal. The narrower 

 the plats the less is the liability to error arising from non-uni- 

 formity of soil. The experiment under consideration was so 

 planned that differences in soil conditions were practically elim- 

 inated and this adds much to the value of the results. 



The experiment included fourteen rows, 920 feet, or nearly 

 fifty-six rods in length, of the variety Late Blush. 



The rows were numbered consecutively and two separated 

 rows received similar treatment in each case. 



Eows 1 and 8 were treated five times with Fungiroid and Paris 

 green, half and half, applied dry with a Leggett powder-gun ac- 

 cording to the directions given on the caii.f 



Rows 2 and 9 were treated five times with Paris green in lime 

 water. The lime water was used to prevent the free arsenious 

 acid in the Paris green from injuring the foliage. 



Eows 3 and 10 were sprayed five times — the first time with 

 Paris green in lime water the same as was used on rows 2 and 9, 

 and the last four times with " Lion Brand " Bordeaux mixturej 

 and Paris green. 



Rows 4 and 11 were sprayed four times with Bordeaux mixture 

 (l-to-7 formula) and Paris green. It was the original intention 

 to spray these rows only three times, but it was found absolutely 

 necessary to make a fourth application. 



*N. Y. Agrl. Exp. Sta. Bui. No. 101, p. 75. 



t Fungiroid may be purchased separately or mixed with Paris green, half and half, 

 in pound cans ready for use. We used the latter form. 



$ It was planned to use " Lion Brand " Bordeaux mixture for all five applications but 

 the can of Bordeaux designed for use in the first application was stolen. The contents 

 In one of the two cans subsequently used was so thick that it could not be gotten out 

 of the can through the three-fourths inch hole provided for that purpose. It was neces- 

 sary to cut out the tOD of the can. The other can was better in this respect, but still 

 It was difficult to empty out the contents through the hole. 



