. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Cucumber Diseases 135 Symptoms. At first, the plants have a vigorous appearance, but soon turn yellow and fail to form fruit. The leaves of affected plants become spotted^ resembling somewhat mosaic. Cucumbers are often grown in the same beds for a number of years. Each year as new manure and fertilizers are added, the salt content of the soil becomes higher and more concentrated. Although there is an abundance of available food in the soil, the cucumber suffers because it is unable to stand a concen
. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Cucumber Diseases 135 Symptoms. At first, the plants have a vigorous appearance, but soon turn yellow and fail to form fruit. The leaves of affected plants become spotted^ resembling somewhat mosaic. Cucumbers are often grown in the same beds for a number of years. Each year as new manure and fertilizers are added, the salt content of the soil becomes higher and more concentrated. Although there is an abundance of available food in the soil, the cucumber suffers because it is unable to stand a concentrated form of food. Chemical analysis of a normal and an overfed soil throws much light on this important subject. These analyses are given in the accompanying Table 17. Table 17 Average Composition of an Overfed Soil Com- pared with Normal Soil Total water soluble salts. Soluble nitrogen Soluble pota^ Soluble phosphoric Soluble calduin Soluble sodium oxide. Soluble magnesiuin oxide S(duble sulphates From Table 17 it is seen that an overfed soil has a marked increase of soluble plant food. If we should express this in terms of fertilizers it would make 3^. 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 Taubenhaus, Jacob Joseph, 1884-1937. New York : E. P. Dutton
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Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920
