. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 646 LABOKATURY EX liRCISES Clicslnul Blight {Endolhia (Diaporlhc) parasitica (Murrill) Anderson).âInocula- tion into the chestnut tree should be made into scarifications of the bark made by means of a sterile scalpel. The bark should be washed before inoculation by means of a weak formalin solution followed by distilled water. The summer spores can be rubbed into place by means of a sterile platinum needle. Appel's Potato Rot (Bacillus phyto- phthorus, Appel.).âThis organism read- ily g
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 646 LABOKATURY EX liRCISES Clicslnul Blight {Endolhia (Diaporlhc) parasitica (Murrill) Anderson).âInocula- tion into the chestnut tree should be made into scarifications of the bark made by means of a sterile scalpel. The bark should be washed before inoculation by means of a weak formalin solution followed by distilled water. The summer spores can be rubbed into place by means of a sterile platinum needle. Appel's Potato Rot (Bacillus phyto- phthorus, Appel.).âThis organism read- ily grows on beef agar. It is inocu- lated into washed parts of the potato stem by smearing some of the culture on the stem and pricking into place by means of a sterile cambric needle into the young growing tissue. LESSON 32 Sleepy Disease of Tomatoes {Pusarium lycopersici Sacc).â^This organism can be cultivated on steamed rice, or on potato slants. Inoculate just above the lower leaves of the young stem by first washing the stem with distilled water. Place some of the culture on the part of the stem to be inoculated and prick the fungus into the stem with a sterile needle. In ten to fifteen days, the tomato plants begin to wilt and in three weeks the diseased conditions are unusually good for study. The culture growths show pale orange spore masses and a whitish mycelium. The tomato variety Consate is not susceptible. WoUenweber used the variety Stone and found it satisfactory. T, â ,, , ^ . ' Egg Plant Will (Verticillium albo- FiG. 229.âYoung com plant showing \ t 1 t places for inoculation with Pseudomonas airum) .âlaoca\ the hypocotyl near Stewarti. or below the soil level with spores sus- pended in water of a ten days old cul- ture. Egg plants of any age raaj- be inoculated. Black sclerotia are found in from ten to fourteen days after the inoculation. This organism is readily grown on potato slants. Wilt Disease of the Cotton Cowpeas and Watermelon {Ncocosmospora vas
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
