247 



number of stocks iu each section which pushed out 

 ol the severity of leaf-blight. The results of this 



TABLE 5. Showing number of American stocks forced to 



cause 



Number and treatment of stocks. 



326 stocks treated 7 times with Bordeaux 



288 stocks treated 3 times witli Bordeaux 



313 stocks treated 7 times with ammouiacal solution 



325 stocks treated 3 times with ammouiacal solution 



421 stocks untreated 



1802. The same rows of stocks were employed this season as had 

 been treated the previous season, as many as possible of them having 

 been budded as described subsequently on p. 261. Those not budable 

 were left standing for further treatment with fungicides. The treat- 

 ments were as described on pp. 262-263. Owing to the inferior char- 

 acter of the stocks originally planted this whole block would be consid- 

 ered worthless, as not one-half the stocks were budable in 1891. The 

 effect of the Bordeaux mixture, however, was plainly observable and a 

 rough estimate made October 19 of the percentage of foliage still upon 

 the unb added stocks shows the Bordeaux to be much superior to the 

 ammouiacal solution, and 6 treatments superior to 5. 



QUINCE LEAF-BLIGHT (Entomosporium maculatum Le"v.). 



Much that was said in reference to pear leaf-blight applies equally 

 well to quince leaf-blight, which is caused by the attacks of the same 

 fungus. The parasite, so far as the author's observation goes, never 

 attacks the bark on the young shoots but is confined wholly to the 

 foliage. The Angers quince seems more susceptible than the Orange 

 and it is rare to observe after the first week in September a block of 

 quince cuttings from which at least 50 per cent of the leaves have 

 not fallen. Unlike the disease on the pear, the quince leal-blight often 

 seriously defoliates bearing trees in this section and commonly causes 

 the fruit-grower much loss from its attacks on the ripening fruits, iu 

 which form it is called "fruit spot."* 



The experiments in the prevention of this disease were confined to 

 one row of Angers quince cuttings, treated partly with Bordeaux mix- 

 ture and partly with ammouiacal solution.! 



ANGERS QUINCK STOCKS. 



1891. One row of 509 cuttings was planted and treated with fungi- 

 cides in the manner described on pp. 260-263. The season being an 

 unusually dry one, no disease of any consequence appeared, and as 



" Bull. 3 Div. Veg. Path., pp. 65-68, PI. vn, vm. 



t For iorumlie of fungicides ami dates of treatment, see pp. 262-263. 



