Chapter XXIII

UTILIZATION AND RECLAMATION OF ALKALI LAND,
455.—Alkali-resistant Crops, 455.—Counteracting
Evaporation, 455.—Turning-under of Surface Alkali,
456.—Shading, 457.—Neutralizing Black Alkali,
457.—Removing the Salts from the Soils, 458.—Scraping
off, 458.—Leaching-Down. Figure, 459.—Underdrainage, the
Final and Universal Remedy for Alkali, 460.—Possible
Injury to Land by Excessive Leaching, 462.—Difficulty in
Draining “Black” Alkali Land, 462.—Swamping of Alkali
Land, 463.—Removal of Alkali Salts by Certain Crops,
463.—Tolerance of Alkali by Culture Plants, 463.—Relative
Injuriousness of the several Salts. Effects on Sugar Beets,
464.—Table of Tolerances; Comments on same, 467.—Saltbushes
and Native Grasses. Australian Saltbushes, 469.—Modiola;
Native and Cultivated Grasses, 469.—Other Herbaceous Crops,
472.—Legumes, 472.—Mustard Family, 473.—Sunflower Family,
473.—Root Crops, 474.—Stem Crops, 475.—Textile Plants,
475.—Shrubs and Trees, 475.—Vine, Olive, Date, Citrus
Trees. Deciduous Orchard Trees. Timber and Shade Trees,
475.—Inducements toward the Reclamation of Alkali Lands,
481.—Wheat on Reclaimed Land at Tulare; Figure, 482.—Need
of Constant Vigilance, 484.