1040 ]>isi-:.\si;s oi' xAuuons crops 



2) Cercospora Kopkei {" enfennedad de las mauchas rojizas "). — In 

 spring and autumn, especially during the rainy season, the occurrence is 

 frequently noted in the plantation of oblong red spots, irregular in outline, 

 extending over the leaves. When the infection is severe it causes withering. 

 On keeping the infested leaves in a verj^ moist atmosphere, growth of the 

 hyphae of the mycelium of the pathogenic agent, Cercospora Kopkei, is 

 soon induced. Using cultures of this fungus it is very easy to produce the 

 disease artificially, though it does not cause great damage, at any rate in 

 the plantations of Tucuman. In any case, it is effectively controlled by 

 means of Bordeaux mixture applied only to the outer and most exposed 

 parts of the plantation, where wind-borne conidia are usually deposited. 



(3) Leptosphaeria Sacchari (" enfermedad de las manchas anulares "). 

 Oval blotches, 3 mm. in width and 7 to 9 mm. in length, appear on the leaves 

 attacked by this fungus. In an advanced stage of the disease these blotches 

 are white or yellow, dry in the centre and darkest at the edge. The dam- 

 age caused by Leptosphaeria is mostly inconsiderable. For control, it 

 is advised that all the infected parts should be gathered and burnt. 



The author also mentions : Physalospora tucumaniensis Speg. in Florida, 

 at San Pablo and in New Bavaria: it attacks eld and dying leaves, and there- 

 fore does no ver}^ great harm ; Ventiiria sterilis Speg., PhyUostida Sacchari 

 Speg., Melanconium Sacchari Massee ; Glenospora Sacchari Speg., Fmuago 

 Sacchari Speg., and Colletoirichum falcatum Went., the presence of which 

 however has not yet been definitely established. 



814 - Fungous Diseases of Coffee in Malaya. — Belgr.WE W. N. C. in The Aiiricultitral Bul- 

 letin of the Federated Malay States,'Vol. IV, No. 4, pp. 111-113. Singapore, January i<)i6. 



The coffee disease known as " leaf spot " caused by Hemileia vastatrix 

 occurs locall}^ in Malaya, but not to any considerable extent. The fungi 

 of the genera Hyalopus and Cephalosporium probably batten on the Hemi- 

 leia and are alwa^'-s found on the ripe patches of this rust. 



The foliage is also attacked but less seriously, b}' Phyllosticta coffeicola, 

 Coniothyrium Coffeae and a species of Colletoirichum. 



Among diseases cf the stem is the one called " die-back ", which at 

 present is cf no economic importance. On sectioning the woody mass of 

 the infected parts, it is seen to be completely over-run bjnnterwoveu. hyphae 

 belonging to two finigi of the genera Diplodia and CoUetolrichitm. 



The mycelium of a basidiomycete, the fructifications of which have not 

 yet been discovered, sometimes develops between the bark end wood cf the 

 roots, rotting and destroying the tissue. 



There are often found, especially on the " robusta " berries, epithelial 

 spots and lesions due, according to Zimmermann, to the action of weather 

 agencies. They do not injure the coffee, but ma}' lead to the attack of 

 dangerous fungous diseases. 



Among the fungi observed on the fruits mpy be mentioned : Pestalozzia 

 Coffeae, Hemileia vastatrix and species of the genera Stilhum, Fusarium, 

 Coniothvriwn and Capnodiurn, the latter in conjunction with scale insects. 



