257 



Degrully (L.). Contre la fumagine de Tolivier. [Against the sooty 

 fungiis of the olive.] — Progres Agric. Vilic, Montpellier, Ixiii 

 (32nd year), 10th January 1915, pp. 42-43. 



In 1906, D. Yidal gave three good formulae for freeing olive trees 

 from sooty fungus, while killing the Coccids responsible for the presence 

 of the mould. These are given below in order of merit, parts being 

 understood as parts by volume. Essence of turpentine 1 part and 

 2 per cent. Bordeaux mixture 100 parts ; soft soap 8 lb. and petroleum 

 25 pints, this emulsion to be mixed with 80 gals, of 2 per cent. Bordeaux 

 mixture ; strong standardised tobacco juice 1 part, and 2 per cent. 

 Bordeaux mixture 100 parts. In compounding the first two prepara- 

 tions, very thorough mixing is necessary. In 1910, A. Herand recom- 

 mended 3 parts of calcium sulphide in 17 parts of water. To obtain 

 the calcium sulphide a little water is mixed with 6 lb. of fat lime and 

 this is boiled for one hour with 4 gallons of water into which 6 lb. of 

 sulphur has been well stirred. The best period for treatment is when 

 the young scales emerge. Treatment must be repeated during several 

 consecutive years. In regions exposed to sea breezes, great care and 

 patience are necessary. 



Second Biennial Crop Pest and Horticultural Report, 1913-1914. — 



Oregon Agric. Expt.Sta., Corvallis, 15th January 1915, 288 pp., 

 11 plates, 109 figs. 



The Report of the Department of Entomology constitutes Part II 

 (pp. 95-202) of the above report, and abstracts of the 23 papers it 

 contains are here given in order : — 



Wilson (H. F.) & Moznette (G. F.). The Fruit Tree Leaf Syneta, 

 S]inela albida, Leconte ; pp. 96-101, 1 plate, 3 figs. 



This Chrysomelid beetle has never been recorded out of the region 

 of the Pacific north-west. Details of its range in Oregon are given. 

 The injury caused by it is twofold, the larvae feeding on the fibrous 

 roots and the adults on the flowers, foliage and fruits of fruit trees. 

 The adults damage especially young trees and grafts, and also the 

 fruits of apple, pear, cherry, and prune. In all cases the injury caused 

 by the adults is seen in the spring shortly after their emergence ; 

 petals become riddled and holes are eaten in the foliage, on larger trees 

 the former damage being the more apparent. As the petals disappear, 

 the attack on the leaves and young fruit develops, with the result that 

 the fruit either drops or becomes so scarred as to be unsaleable even 

 as second-grade fruit. Hibernation occurs in earthen cells at 6 to 14 

 •or more inches below the surface of the ground. The first pupae are 

 formed about 1st March and the adults appear about the middle of 

 the month and remain in evidence until about the middle of June. 

 Their sudden appearance is probably due to the fact that immediately 

 after emergence they find their way to the opening flower and leaf-buds 

 and remain hidden there until disturbed ; this is especially true if 

 the weather is chilly or wet. Extensive observations on the distri- 

 bution of the pupae were made in turf and cultivated areas, and as a 

 rule very few individuals were found where the orchard was kept 

 under turf. None were taken in open ground, nor were they found 



