80 SUMMARY OF CURRENT RESEARCHES RELATING TO 



growing on the branches of Lyfjeum Spartium along with Henderso7iia 

 Sparta. He describes these and other forms. 



H. Detmann * pubhshes observations on plant diseases in Baden. 

 He notifies among others the appearance of Peronospora vitlcola on the 

 vines. Puccinia simplex and P. gramiius were recorded many times. 

 Mildew of the quince was more wide spread and more vkulent than in 

 previous years. Suggestions are given as to remedies. 



Plant parasites in Holland form the subject of another communica- 

 tion. f Species of Peronospora did much damage to rose trees, salad and 

 clover. Peridermium Strohi was discovered on a Weymouth pine. 

 Exoascns appeared for the first time in Holland on cherries. Clado- 

 sporium hrrbarnm was frequently found ; it caused considerable loss to 

 the grain harvests. Sp/uereUa briiniieola, Fasarium roseimi. Scleroiinue, 

 and species of Botrytis are recorded on cultivated plants. Fomes 

 annosus also ranks as a harmful ])arasite ; it was found that it had 

 developed along the mouse tracks, and the view is hazarded that mice 

 may aid in the spread of the fungus. 



R. Solla J reports on harmful fungi in Italy. These include 

 Monilia chierca on plum trees, Ftotrytis vidyaris on roses, UstiJayo 

 Jfaydis and TiJJeUa Tritki on corn. A new species, Phyllosticta mespili- 

 rola, was found on the leaves of Mespilus germanka, and a Coniothyrium 

 was spotting and destroying willow leaves. Uropldyctis AlfalfcB was 

 found by V. Peglion forming its galls on the roots of Alfalfa, and various 

 other forms are also recorded along with instances of attack by Bacteria. 



N. Ranojewic § describes the work done at the agricultural research 

 station at Belgrade during the years 1903-5. He records wide-spread 

 mischief caused by Plasmopara vitkola on vines, and he gives the results 

 of the treatment of the diseased plants with Bordeaux mixture. A long 

 list is given of the parasites and hosts among the cultivated plants. 

 Insect pests occupy a large part of the paper. 



K. Malkoff Sadovo |1 reports on diseases from Bulgaria, and tells of 

 successful applications of spraying mixtures. These were of distinct 

 advantage in combating attacks of Ascochyta Pisi and Ewoascus 

 deformans. 



E. Rostrupf states that 146 cases of plant diseases were referred to 

 him during the year, affecting cereals, fodder, leguminous plants, and 

 roots. 



W. Carruthers ** has reported on ;57 cases of plant diseases in England 

 occurring in field and garden crops, and on various trees. 



F. D. Heald tt writes on plant diseases in Nebraska during 1905. 



* Zeitschr. Pflanzenkr., xvi. (1906) pp. 142-4. t Tom. cit., pp. 144-6. 



t Tom. cit., pp. 147-9. 

 § Tom. cit., pp. 207-12. 



II Jahresb. Staatt. Landw. Versuchst. Sadovio, Bulgarien, 1904, 242 pp., 8 pis. 

 See also Zeitschr. Pflauzenkr., xvi. (1906) pp. 212-13. 



% Tidssk. Landbrugets Planteavl, xl. (Kopenhagen, 1904) pp. 395-421. See 

 also Zeitschr. Pflanzenkr., xvi. (1906) pp. 213-15. 



** Journ. Roy. Agric. Soc , Ixv. (1904) and Ixvi. (1905). See also Zeitschr. 

 Pflanzenkr., xvi. (1906) pp. 215-17. 



tt Nebraska Agric. Exper. Stat. Report, xix. (1906) pp. 20-60. 



