Reports to the Board of A gricuttiiye. 147 



quassia and soft soap wash to kill the Apple Suckers before tliey 

 become winged. Many were in the pupal stage in May. Two days 

 later the trees should be sprayed with Paris green to clear off the 

 AVinter Moth larvic, which are of various sizes. Poidtry should at 

 once be turned into the orchard and kept there until -Tuly, as they 

 devour many of the larvte as they fall to pupate in the earth beneath 

 the trees. 



The Apple Suckers and also the larv?e may keep on damaging 

 the leafage for some time, and will check the growth of the trees 

 unless remedies are applied. The spraying must be very thorough 

 when the pests are well established upon the foliage. The best 

 Chiswick Soft Soap should be used for the quassia wash. 



The two washes cannot be applied together. Caution must also 

 be given regarding the burning effect of Paris green unless lime is 

 added to the wash. 



Diseased Apple and Plum Trees. 



Some specimens of apple sent by a correspondent from Cottenham, 

 Cambridge, were damaged by the Apple Sucker {Paylla mail), a 

 number of which were found on the specimens. 



Samples of plum were ruined by the Plum Aphis (Aphis priiiii). 

 1 was unable, from the material sent, to detect any insect damage to 

 the cherry leaves also forwarded. There is no doubt the Psjjlla 

 and Aphis of various kinds were chiefly accountable for the damage 

 done in the Cottenham district, but the cherry trees were suffering 

 from a fungoid disease. 



The correspondent was advised to spray with caustic alkali 

 wash in winter, quassia and soft soap ^\'ash in the spring several 

 times. To check the fungus, Bordeaux mixture may Ije used at the 

 same time as the quassia and soft soap. 



The specimens of the diseased cherry branches and some apple 

 leaves were examined by the Kew authorities. 



The cheiTy branches were damaged liy a fungus, Sclcrotina 

 Jructiijcna, Schroter. 



The apple leaves sent had fallen in great numbers from tlie trees. 

 The fungus Cladosporiurn epiphylliim, Pries., was present, but did not 

 account for the iiremature decay and fall of the leaves. 



The fungus attacking the cherry is described in Leaflet No. 86, 

 the Apple Sucker in No. 16. The cause of the fallen apple leaves 

 is at present unknown. 



L 2 



