248 EXPERIMENT STATION RECORD. 



account of S])r;i.vin<i ("xiicrinicnts cMnicd on in cooin'ralion hclwccii llio station 

 and the Hnroan of riant Industry of this Departnicnt, a jnwions report of 

 which has l)een noted (E. S. K., 22, p. 50). 



Spraying for peach fruit spot, A. I?. Cordi.i.v and C. C. Catk (Oregon Sta. 

 liul. 106, PI). ,i-l.j, jitjH. 8).- — Peach fruit spot, il is said, has occasioned con- 

 siderable loss In Oregon and experiments have been carried on for its control. 

 The investigations thus far conducted have shown that this disease, which 

 occurs not only on the peach but also on the apricot, can be practically elim- 

 inated by spraying, (iood results can be obtained with either Bordeaux mix- 

 nu"e or lime-sulphur solutions, but so far the results are in favor of the Bor- 

 deaux mixture. 



In connection with the sjiraying fcu' the prevention of this disease fall appli- 

 cations of fungicides seem to be essential and are apparently the most efficient. 

 For this purpose, if the San Jose scale is present, lime-sulphur solution should 

 be used; if not, Bordeaux mixture may be used if preferred. The fall appli- 

 cation is said to be beneficial also in controlling the peach twig blight. 



The peach fruit s]jot fungus attacks the fruit between May 10 and June 15, 

 and the first sunnner si)raying should be made about May 10 and the second 

 about June 1. Other applications should be made dei)ending upon the season. 



The bleeding stem disease of the coconut tree in Ceylon, T. Fetch (Brit. 

 MycoJ. Soc. Tnin-s., 3 (J908), pt. 2, pp. 108, JO!l). — A description is given of a 

 disease of the coconut tree, a preliminary account of which has been noted 

 (E. S. R., 20, p. .347). 



This disease is of fungus origin and is due to Thiclariopsis ethaceticus. The 

 attack is principally upon the stem,, where the pi-esence of the fungus may be 

 noted by the occurrence of rusty wet patches on the bark, which turn brown 

 and finally black. On cutting into the stem the internal tissues are found to 

 1)6 decayed. At first the diseased tissue is of small extent and well defined, 

 but diseased areas coalesce and finally involve the whole stem. 



The preventive measures recommended are the same as those previously 

 described, and consist of cutting out the diseased tissues, scorching the interior 

 of the wound with torches, and painting with hot coal tar. 



A fungus parasite of rubber, B. Funk (Trop. Agr. (ind Mag. Ceylon Agr. 

 Soc., 32 (190!)), No. 5, p. 502; Agr. Bui. Straits and Fed. Malay States, 8 

 (1909), No. 7, p. 312). — An account is given of a disease of cacao and rubber 

 ti'ees due to Hyinenochwte noxia. This fungus is said to produce a curious 

 l)rown growth on the roots, causing their destruction. 



A new fungus pest of Para rubber, H. N. Ridley (Agi: Bui. Straits and 

 Fed. Malay States, 8 (1909), No. 7, pp. 310-312). — A description is given of a 

 fungus disease of Para rubber, in which the branches of the trees are destroyed 

 by the attacks of a bark fungus hitherto unknown to the author. The attack 

 seems to begin on the shoots, which turn black, and the disease continues to 

 descend the trunk of the tree, which is eventually destroyed. 



Examination of the material showed the presence of a fungus which is be- 

 lievetl to be allied to the genus Cucui-bitaria parasitic on Laburnum in Europe. 



Notes are given on the distribution of the fungus. From the accounts pre- 

 sented it is apparently very rapid in its destruction of young trees. 



Pruning the trees, cutting well below the affected portions, and the use of 

 a fungicide to prevent the germination of spores are recommended as preventive 

 measures. 



The biology of Arniillaria niucida, C. E. C. Fischer (Ann. lint. [London], 

 23 (1909), No. 92, pp. 515-')35, pis. 2).— A study was made of this fungus, which 

 is said to be common wherever beech trees occur, in order to trace its life 



