. Yearbook of agriculture . Fig. 39.—Timothy is practically confined to the northeastern quarter of the UnitedStates, except for a scattered acreage in the moister districts of the Rocky MountainRegion. The western margin of the timothy acreage in the Dakotas, Nebraska, marks the beginning of the Black-isarth belt, where lime has accumlated inthe subsoil, of dense alfalfa acreage, and of dry-farming practices (see Figs. 6, 42,and 103,1. The southern boundary of timothy follows approximately the line of 200days in the frost-free season, or 77 mean summer temperature. The districts of
. Yearbook of agriculture . Fig. 39.—Timothy is practically confined to the northeastern quarter of the UnitedStates, except for a scattered acreage in the moister districts of the Rocky MountainRegion. The western margin of the timothy acreage in the Dakotas, Nebraska, marks the beginning of the Black-isarth belt, where lime has accumlated inthe subsoil, of dense alfalfa acreage, and of dry-farming practices (see Figs. 6, 42,and 103,1. The southern boundary of timothy follows approximately the line of 200days in the frost-free season, or 77 mean summer temperature. The districts ofdensest production in northern Missouri, southern Illinois, eastern Ohio, and westernPennsylvania have, in general, rather heavy and slightly sour soils. A Graphic Smmnary of Amei^ican Agriculture. 449. Fig. 40.—The acreage of timothy and clover mixed extends a little farther south andis somewhat more important in the West, especially in the North Pacific Region, thanthat of timothy alone. Clover is not as well adapted as timothy to heavy or sour sous,fonsequentlv, timothy and clover mixed is more important on the better soils—in south-eastern Pennsvlvania, western Ohio, southern Michigan, northwestern Illinois, and these sections timothy and clover commonly constitute the third year and some-times the fourth year also, in a rotation, following com and wheat or oats. Abouttwo-thirds of the acreage of timothy and clover mixed is in the Hay and PastureRegion. Compare with map of cotton acreage (Fig. 22) and of clover (Fig. 45). 450 YearhooTc of the Department of Agt-^iculture, 1921.
Size: 1279px × 1954px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectagriculture, bookyear
