184 



thrips, tlie bugs Lygus. Calocoris and Atyactodcs mali, and the 

 Aphids Aphis pomi {mali), A. crataegi and Siplionaphis {Siphonophora) 

 padi, were met with on fruit trees. Psylla mali and Paratdranychus 

 pilosiis were controlled by the use of tobacco extract containing 

 01 per cent, nicotine and 1 per cent. soap. 



Pests of stone-fruits included Chcimaiobia hyumata on cherries and 

 plums, Diloba cocnileoccphala on cherries and a]>ricots, Hyponomcuia 

 spp. on mirabel, bird cherries, blackthorn, spindle tree and lilac, and 

 Hoplocampa fidvicornis and Tt^ririx funehrana doing great damage to 

 plums and mirabel. The Aphids, Hyaloptcnis arimdinis {pruni). 

 Aphis ccrasi and others, did some damage, but spraying with formalin 

 in the evenings was effective against them. 



Raspberry pests included Aegeria iSesia) bembeciformis. By turns 

 tomentosus. Anthonomus riibi and Otiorrhynchus ligustici, the latter 

 in one locality doing very great damage by destroying the young 

 shoots. 



Pests of gooseberries, currants and black currants included 

 Pteroniis [Nematus) ribesii and Pristiphora pallipes (appendiculata), 

 which did great damage in June and July, but against which spraying 

 with Paris green was effective, Abraxas grossidariata, Cheimatobia 

 brumata, C. boreata, Lygus and Calocoris spp., Lecanium sp., Bryobia 

 ribis, Tctranychus sp. and Eriophyes ribis. Aphids on blackcurrants 

 were destroyed by spraying in the evening with 0'25 per cent, formalin. 

 On hazel, Balaninus nucum and Eriophyes avellanae occurred. On 

 strawberries, Anthonomus rubi did great damage. Blennocampa 

 geniculata, Oxygrapha (Acalla) coniariana, Hydroecia micacca and 

 Tarsonemus fragariae were also recorded. Beans and cucumbers were 

 attacked by Lygus, Calocoris, thrips, Smynthurus, Tctranychus altheae 

 and Oniscus, and melons by Aphids and Tctranychus. On asparagus 

 Crioccris asparagi was common, Acrolcpia assectella on leeks and 

 Hylemyia antiqua on onions and leeks. Mines of Phytomyza affinis 

 caused very great damage to the foliage of cultivated Chrysanthemum. 



As usual, widespread damage was caused by Euxoa ( Agrotis) segetum 

 and other cutworms, Agriotes lineatus, Tipula paludosa, Forficula 

 auricularia, Blaniulus guttulatus and others on various plants. 

 Melolontha melolontha {vulgaris) and Phyllopertha horticola also did 

 some damage. 



Fritfluer i Vintersaed. [Frit-flies in Winter Crops.] — Vort Landbrug, 

 Copenhagen, 1919, p. 136 ; also Ugeskrift for Landmacnd, xliv, 

 1919, p. 185. 



An attack of OscincUa frit on wheat and rye is recorded, after 

 grass had been lately phnighed in, from which it would appear that 

 the frit-fly larvae can leave the grass ploughed under and migrate to 

 young corn. 



RosTRUP (S.). Krusesyge i Kaalroer. [Curly-leaf Disease in Rape.] 

 — Ugeskrift for Landmacnd. Copenhagen, Ixiv, 1919, pp. 563-564. 



In 1912 curly-leaf disease in rape and turnip was shown by Taylor 

 to be due to the midge, Contarinia nasturtii, in England, and the same 

 species is now found to be the cause of this disease in Denmark. 



