. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 14 intensity of the sunlight increase more attention should be given to the water supply and to air moisture. The air moisture should be considerably more during the day, particularly on bright days, than in the night. If syringing the foliage is necessary, it should be done in the morning, when the bright sunshine will dry the foliage quickly, and never at night, as moisture remaining on the foliage at night favors the development of mildew. TIMBER ROT (Sclerotinia Libertiana, Fckl.) The fungus causing w
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. 14 intensity of the sunlight increase more attention should be given to the water supply and to air moisture. The air moisture should be considerably more during the day, particularly on bright days, than in the night. If syringing the foliage is necessary, it should be done in the morning, when the bright sunshine will dry the foliage quickly, and never at night, as moisture remaining on the foliage at night favors the development of mildew. TIMBER ROT (Sclerotinia Libertiana, Fckl.) The fungus causing what is termed "timber-rot" is occasion- ally found on tomatoes, and the effects are similar to those pro- duced by the stem-rot of cucumbers. Tomatoes, however, are not as susceptible to timber-rot as cucumbers, although when. Fig. 2, showing timber rot on the stem of tomato. The blackened areas on the stem represent masses of sclerotia. affected, the crop is greatly injured. We have repeatedly grown crops of tomatoes in soil badly infected with the timber-rot fungus, but as a rule only a few plants become diseased, and from this it would appear that tomatoes are generally immune to attacks from Sclerotinia. Sclerotinia is a sterile soil fungus, and gains entrance to the plant near the surface of the soil. When the plant becomes infected the fungus traverses the stem and breaks out some dis- tance above the ground, the part of the stem affected becoming whitish in appearance. Small, hard, black masses called sclerotia, about 1/33 or more of an inch in diameter, make their appear- ance on the surface of the stem. These sclerotia are capable. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massachusetts Agricultural Experiment Station. Amherst, : Massachusetts Agricultural Experiment Station, 1907-19
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