. Effective farming; a text-book for American schools . Fig. 17. — Vegetables grown under irrigation. When a soil is sandy and is underlaid at a depth of three or four feet by a stratum of clay, conditions are favorable for the in- stallation of a sub-irrigation system, because the soil can be saturated and the pipes emptied quickly. Since the pipes are usually empty, the roots do not enter them as they would if they held water for a greater part of the time. This system is used largely in truck-farming. In the vicinit}^ of Sanford, Florida, it has been extensively employed for irrigating soil
. Effective farming; a text-book for American schools . Fig. 17. — Vegetables grown under irrigation. When a soil is sandy and is underlaid at a depth of three or four feet by a stratum of clay, conditions are favorable for the in- stallation of a sub-irrigation system, because the soil can be saturated and the pipes emptied quickly. Since the pipes are usually empty, the roots do not enter them as they would if they held water for a greater part of the time. This system is used largely in truck-farming. In the vicinit}^ of Sanford, Florida, it has been extensively employed for irrigating soil used for celery and other vegetable crops.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
