4:(> EXPERIMENT STATION KECOKD. 



tbe disease showed that it was due to the same cause as that produoiug pear 

 blight {BnelUus; ani}/lovonts). The commou Euglish hawthoru does not appear 

 to be affected so far as the observation has been made, but on account of the 

 susceptibility of this variety a caution is given fruit growers against its 

 planting. 



The cucumber wilt. BaciUus trachriphiliix. made its appearance during the 

 season, but as it appeared late iu summer did little iniury. The author 

 expects to carry on investigations regarding this organism. 



A disease of strawberries is In'ietly descril)ed. '^vllicll is characterized l)y the 

 api>earance of translucent spots which spread throughout the tissue of the green 

 or ripe berries. AYhen a berry is crushed its juice draws out in slimy 

 threads. Aii organism having a yeast-like appearance has been isolated, and 

 studies are being carried on as to its morphology and life history. 



The soft rot of turnips and cauliflowers {Bacillus olcrarea) has again 

 appeared. Init at the experiment station caiised little loss. 



Some injurious fungi found in Ireland, T. Johnson (Ecoii. Proc. Roy. 

 Duhlin Soc. 1 (1901), Ao. 0, pp. o'/oSlO, pis. '/. fifis. .',). — Attention is called 

 to some of the more important plant diseases ol)served by the author. On 

 account of the importance of the potato crop, especial mention is made of the 

 potato disea.ses. Comparatively little loss was caused by I'lnjioplithora hifcstaiis 

 during the year. On the basis of extended observations the author seems to 

 agree with Matruchot and Molliard that most of the rot of potato tubers is 

 to be attributed to bacteria and not directly to the fungus. 



A disease locally known as yellow blight is descril^ed. and the author states 

 that while he formerly considered it due to Hclerotinia sclcrotionnii. he is now 

 satisfied that it is more connnonly the work of bacteria than of fungi. 



Attention is called to a number of diseases of potatoes which have been con- 

 sidered as caused by different species of bacteria, and while the organisms 

 have many biological differences the author is not satisfied that they are all 

 specifically distinct. 



Several forms of potato scab are described. That caused by Hpoiujospora 

 .^olani is of scientific interest rather than economic importance. The scab 

 attributed to PhcUn)nyecs srlciotiophonis is briefly mentioned, and the fungus 

 is said to be identical in its fertile form with Spontlploclofliiiiu dtrorireus. 



Notes are given on the winter storage of ])otatoes and on the heart rot of 

 mangels, onion diseases and their remedies, gooseberry mildew (Splurrothcca 

 ■lunrs-ni'w) , oat smut, and barley leaf streak due to Hrlmiiithosporiiim f/rani- 

 i>ieu)n. the ascospore stage of which. Pleospora tricJiostoma, has been but lately 

 recognized. 



[Report of the] department of botany, C. Brooks CS'eiv Hampshire Sta. 

 Hill. I.i9, pp. 267-275. pis. 2. fi(j. 1). — The season covered by this repoi't was char- 

 iicterized 1iy an exces.sive rainfall that was favorable to fungus diseases. Tlie 

 department kept a record of those reported and. so far as possible, gathered 

 data in regard to the extent and nature of the injury done. The diseases, which 

 are arranged according to tlie host plants, are In-iefiy described and suggestions 

 offered for their conti'ol. Most of those reported upon were of orchard fruits, 

 grapes, potatoes, melons, and other garden crops. 



In addition to inve.stigatious on plant diseases, work has been begun to deter- 

 mine the factors that control the formation of fruit buds on apples of the Bald- 

 win variety. The results thus far obtained do not justify any definite con- 

 clusions, but it appears from the evidence at hand that it will be possible to 

 jiroduce annual crops on varieties that are accustomed to bear only on alternate 

 years. 



