307 



investigations reported in Bulletin No. 04 of the station (see Experiment 

 Station Record, vol. i, p. 263) on the cranberry gall fungus {Synchytrium 

 vaccinii), an act was passed by the State legislature autliorfzing the 

 officers of the station to enter upon any lands bearing vines or plants 

 affected with injurious fungous growths and destroy the same by fire or 

 otherwise. The full text of this act is given in the report. The bog in 

 which the gall fungus was discovered was treated by withholding the 

 water from the bog during the winter. This had a good effect, although 

 in those parts of the bog which could not be kept dry the gall fungus 

 was present in great abundance. 



Several exiMniments with fungicides, including sulphate of copper, 

 sulphate of iron, flowers of sulphur, and lime are reported, but no deci- 

 sive results were obtained. Experiments by J. P. Goldsmith in cover- 

 ing bogs infected with the scald with earth to the depth of about an 

 inch, have indicated that this method of treatment will materially 

 decrease the ravages of the scald. 



Fungous diseases of the siceet potato (pp. 339-345). — A reprint of the 

 concluding paragraphs of Bulletin No. 76 of the station (see Experiment 

 Station Record, vol. ii, p. 416). Field experiments with flowers of sul- 

 phur, sulphate of copper, air-slaked lime, gas lime, common salt, and 

 carbonate of lime for the soU and black rots of sweet potatoes, were con- 

 ducted by several growers, but without decisive results. 



Fungous diseases of various crops {\)j). 345-366). — This includes notes 

 on the fungous diseases which injured variousfield crops in the State in 

 1890, as follows: Potatoes. — Potato rot {Fhytophtliorainfestans), a disease 

 thought to be due to bacteria, and potato scab. Cahhages. — Club root 

 (Plasmodophora hrassicce), a mildew {Peronospor a parasitica), and l)lack 

 mold {Macrosporium hrassicce). Radishes. — Club root [Plasmodophora 

 brassic(e) and white mold {Cystopus candidus). Turnips and carrots. — 

 A root rot caused by an undetermined fungus. Salsify. — A root rot due 

 to bacteria, whicb also injured turnips, carrots, and onions. Onions. — 

 A botrytis (probably Botrytis parasitica), onion smut ( JJrocystis cepulce), 

 onion vermicularia ( Vermicularia circinans), and black mold {Macrospo- 

 rium sp.). Spinach. — Besides the species of fungi referred to in Bulle- 

 tin No. 70 of the station (see Experiment Station Record, vol. ii, p. 

 241), a leaf blight {Cercospora flagilliformis, E. & Hals.). Eggplants. — 

 Leaf sj)ot {PhyUosticta hortorum), ashy mold {Botrytis fasicularis), and 

 anthracnose {Glceosporium. melonyenw, E. & Hals.). Peppers. — Two spe- 

 cies of anthracnose {Glmosporium piperitum and Colletotrichum nigrum 

 E. & Hals.) and a leaf spot {PhyUosticta). Horse-radish. — A leaf spot 

 {Septoria armoracew) and a white mold {Ramularia armoracew). HoUy- 

 hixk. — Rust {Puccinia malvacearum), leaf spot {Gercospora althaina), 

 and Colletotrichum malvarum. Violets. — Leaf spot {Gercospora violce), 

 PhyUosticta violw, a mildew {Peronospora violw), anthracnose {Glceo- 

 sporium violw), and a white mold {Zygodesmus albidus, E. & Hals.). A 

 number of other diseases of the violet were observed, and the whole 



