The book Diseases of Greenhouse Crops And Their Control was written by author Jacob Joseph Taubenhaus Here you can read free online of Diseases of Greenhouse Crops And Their Control book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Diseases of Greenhouse Crops And Their Control a good or bad book?
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This trouble is especially common in cities where gas is used for illumination. The symptom of sleep is a closing inward of the petals (opened corolla). Once a blossom goes to sleep it never opens again. The investigations by Crocker and Knight t have shown that at least one cause of sleep in carnation is due to traces of illuminating •Clinton, G. P., Conn. Agr. Expt. Sta., Thirty-ninth Ann. Rept.: 428-439, 1915- t Crocker, W., and Knight, L., Bot Gaz. 56:259-276, 1908. 220 Diseases of Greenhou...se Crops gas (ethylene) in the surrounding atmosphere. This trouble has been overcome in floral establishments where lighting gas was replaced by electricity. Malnutrition Cause, overfeeding. Symptoms. The trouble is usually manifested on the blossoms. It is brought about by the applica- tion of an excess of certain chemical fertilizers. Acid phosphate applied in large quantities seems to produce no injury. An excess of dried blood will produce blossoms which become soft and subject to sianbum if sprinkled during sunshiny weather.
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