Southern field crops (exclusive of forage plants) . d be preceded, and not followed, by theroller. Occasionally in so^^dng rice that is to be irrigated im-mediately, South Carolina farmers mix the seed T^dth clayand water, so that when water is admitted to the land, theseed •nail not float. 202. Implements and labor. — Only where preparationhas been made for draining the land, can labor-sa\dngimplements be used in preparing for and sowing the cropand in harvesting. Plo\\ing is usually done in spring, buta preliminary plowng is often desirable in the early part ofthe preceding fall. The depth o
Southern field crops (exclusive of forage plants) . d be preceded, and not followed, by theroller. Occasionally in so^^dng rice that is to be irrigated im-mediately, South Carolina farmers mix the seed T^dth clayand water, so that when water is admitted to the land, theseed •nail not float. 202. Implements and labor. — Only where preparationhas been made for draining the land, can labor-sa\dngimplements be used in preparing for and sowing the cropand in harvesting. Plo\\ing is usually done in spring, buta preliminary plowng is often desirable in the early part ofthe preceding fall. The depth of plowing must be governed 222 SOUTHERN FIELD CROPS by local conditions. While deep plowing might otherwisebe desirable, it risks inconvenience in harvesting, since infields deeply plowed the wheels of the binder sink too deepif much rain falls just l^efore harvest time. The land mustbe further prepared by harrowing (Fig. 112). In the rice fields of South Carohna, which are very smalland poorly drained, i)lanting is done chiefly by hand Fig. 112. — Pkep.\eing for Rice in The employment of hand lalwr in this region for plantingand harvesting the crop has caused the decline of the riceindustry here, where the cost of jiroduction is necessarilymuch higher than on the prairies of Louisiana, Texas, andArkansas, where machinery is used for all of these opera-tions. RICE 22:i 203. Irrigation. — Xo extensive rice industry has de-veloped in tlie United States except where irrigation waspossible. Irrigation is necessary to large j-ields and tothe most economical production. Lands must Ije chosenthat can easily be irrigated. For this purpose the mainequalities desired are slight, if any, slope of the surface, anda retentive subsoil. The latter is important so that irriga-tion water may not be lost too rapidly through the soil, andalso because such soils, after being drained, best permit theuse of hea\y niachiner}- in the planting and harvesting ofthe crop. Wate
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