. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. ALKALI IS INJURIOUS 259 become unproduc- tive. Other lands in the arid and semi- arid sections are so saturated with alkali salts naturally that they are barren, and are not fit lands for irrigation. The per- manent remedy con- sists in removing the injurious salts by means of tile drains, scraping it off, and by flooding. The grow- ing of alkali-resisting crops, such as salt grass, has been sug- gested as a means of avoiding injury. Sweet clover grows well when alkali is quite abundant. A
. Productive soils; the fundamentals of successful soil management and profitable crop production. Soils. ALKALI IS INJURIOUS 259 become unproduc- tive. Other lands in the arid and semi- arid sections are so saturated with alkali salts naturally that they are barren, and are not fit lands for irrigation. The per- manent remedy con- sists in removing the injurious salts by means of tile drains, scraping it off, and by flooding. The grow- ing of alkali-resisting crops, such as salt grass, has been sug- gested as a means of avoiding injury. Sweet clover grows well when alkali is quite abundant. As a general rule, deep rooted plants can tolerate alkali soils better than those that are shallow rooted. Land-plaster is sometimes used to neutralize black alkali, the most harmful of the alkali salts (sodi um car- bonate) . Retarding evaporation by mulching and shad- ing, ing accumulation of salts at the surface. and deep plow- may retard the. i y u^^ Fig. 164.—Club-root of cabbage, showing swollen and dis- torted roots and^undeveloped head. (Vermont Station.). 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 Weir, Wilbert Walter, 1882-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsoils, bookyear1920
