23 

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B006me M BMIlorpaAapCTBa BTj HaCTHOCTM. [How to organise the 

 control of pests of Agriculture generally and of Viticulture in 

 particular.] — « B"feCTHMK"b BMHOfl^Jlifl.» [Herald of Viticulture], 

 Odessa, nos. 9 and 10, September-October 1915, pp. 419-423. 



These are two circular letters issued by the Department of 

 Agriculture. The first of them, referring to the difficulties which are 

 bound to be experienced in obtaining the usual insecticides from abroad, 

 suggests the use of a lime-sulphur mixture instead of copper sulphate, 

 and sodium arsenite and djipsin instead of Paris green. The second 

 circular deals with the purchase of foreign manufactured insecticides 

 by various Zemstvos and Agricultural Organisations through the 

 Department of Agriculture. The maximum prices fixed are : — - 

 £1 Is. Of/, per pood (36 lb.) for copper sulphate ; £2 25. Od. per pood 

 for Paris green ; 10s. 6d. per pood for flowers of sulphur ; and 275. Qd. 

 per pood for formalin. 



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rMMeCKyiO CraHl^ilO sa 1914 rOfll». [Tiie principal queries received 

 at the Central Phytopathological Station during 1914.] — 

 «Bon'fe3HI1 PaCTeHiiii.» [Diseases of Plants], Petrograd, ix, 

 nos. 1-2, 1915, pp. 44-66. 



A number of queries referring to insect pests are given, with the 

 remedies suggested in reply. They include : — White acacia {Rohinia 

 fseudacacia) , young shoots infested with Eulecanium (Lecanium) 

 corni, Bche. ; spraying with kerosene emulsion. Water melons, 

 melons and cucumbers attacked by Tetranychus telarius, L. ; the 

 burning of the heavily infested plants, while those which are less 

 infested should be powdered with flowers of sulphur or sprayed with 

 a solution of 1 lb. of wheat flour in about 9 gallons of water. Medlar 

 trees infested with Aphis crataegi, Kalt. ; spraying with a solution 

 of soft soap. Pear trees infested with Hoplocampa brevis, Klug ; 

 spraying the buds with a solution of 2 lb. of soft soap, J lb. of crude 

 carbolic acid, and 6 lb. of tobacco extract in from 40 to 45 gallons of 

 water, or with a solution of 2 parts of clay and 1 part of lime. Against 

 Bydiscus betulae {Rhynchites betuleti) spraying early in spring with 

 milk of lime (4 lb. of freshly slaked lime in about 3 gallons of water). 

 Leaves of oak {Quercus mongolica) injured by Phylloxera coccinea, 

 Heyden ; spraying with quassia solution. Branches of firs were 

 injured by Eucosma {Grapholitha) tedella, 01., the caterpillars of which 

 eat into the needles ; they hibernate in the soil and pupate next 

 spring, the adult being on the wing in June, July and August ; no 

 practical remedies exist. Willows were injured by Aphis amenticola, 

 Kalt., Eriophyes triradiatus, Nal., E. salicis, Nal., Phyllocoptes parvus, 

 Nal., P. magnirostris, Nal., and Epitrimerus salicobius, Nal. Leaves 

 of iris injured by the Chrysomelid, Aphthona nonstriata, Goeze ; 

 spraying with Paris green. Young shoots of roses injured by Hylotoma 

 rosae, L. ; destruction of infested shoots, collection of larvae and 

 spraying with Paris green or 2 per cent, barium chloride. Plums 

 injured by larvae of Hoplocampa fulvicornis, Klug ; the destruction 

 of damaged and fallen fruits. Pine plantations, 3-6 years old, injured 



