120 



Balabanov (M.). MeflflHimt (MeAflHKt). [On Psylla mali].^ 

 « n/10A0B0flCTB0.» [Fruit-growing], Petrogr ad, no. 11, November 

 1914, p. 786. [Received 11th February 1915.] 



The author disagrees with the statement by Lakin, that the copul- 

 ation and oviposition of PsijUa mali was observed on 26th March, 

 as in his experience this process takes place in autumn. This 

 species hibernates in the egg stage, the eggs hatching in March in 

 South Russia, or in April in Central Russia. 



Pierce (G. W.). The Almond.— TlMZi/. Bull. Cat. State Commiss. 

 Horlic, Sacramento, iii, no. 11, November 1914, pp. 456-465, 2 figs. 



This paper is chiefly cultural, only a small part being devoted to 

 insect pests. The larva of the peach moth at times does much 

 damage to the almond crop, if neglected. If it appears, it should 

 be treated with a mixture of Paris green and lime in the proportion 

 of about 1 to 20, apphed with a dust-spraying apparatus. Red 

 spider [Bryobia] is the most persistent pest of the almond, but 

 spraying with sulphur is very effective against it. The sulphur 

 should be mixed with lime, as a carrying medium, in the pro- 

 portion of 25 to 50 per cent, sulphur. If sulphur is to be apphed 

 at the same time that the peach moth needs attention, Paris green 

 may be added to the sulphur and lime mixture. The dry spray is 

 much more economical in its appHcation than the liquid one, is far 

 less disagreeable to the operator, and has generally proved itself 

 effective when properly applied. For a dry spray use : lime, 40 

 pounds ; sulphur, 5 pounds ; and Bordeaux mixture, 3 pounds. 



A home-made mixing machine is easily constructed with any good 

 heavy barrel. A hole should be bored in the middle of each head, and 

 a round shaft put completely through the barrel, leaving it to project 

 at each end far enough to provided bearings on which to revolve, 

 a crank being fixed at one end. A door must be cut in the middle 

 of the barrel at the point of greatest diameter, so fixed that it can be 

 tightly fastened. The dust-spray is best effected with specially 

 prepared machines of various sizes, the larger ones being worked by 

 gasolene engines. The smaller are made to run by a chain, geared 

 to a sprocket which is attached to a wagon wheel, and are cheap and 

 easy to operate. 



The dust-spray should be used early in the morning while the dew 

 is on the foUage and when there is but little wind. The work should 

 be begun on the side of the orchard from which the wind is blowing, 

 and the wagon driven along each fourth row. The machine will 

 blow the spray high into the air and in settling it will be distributed 

 over all the adjacent trees. This operation should be repeated several 

 times each season, along different rows on each occasion. 



Maskew (F.). a leak in our quarantine. — MtJihj. Bull. Cal. State 

 Commiss. Hortic, Sacramento, iii, no. 11, November 1914, pp. 465- 

 467, 2 figs. 



In this short illustrated article it is pointed out that the cotton crop 

 of California, which is at present free from insect pests and diseases, 

 should be protected from the cotton boll weevil [Anthonomus grandis] 



