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31 > Image 31 of Annual report. 1922

Part of Kentucky Agricultural Experiment Station

. ` /Ifenlue/ry xlf]It(l(tl(I()'(lt E.rpcr1`mcn1 Station., 25 Sdfc the proportions of tobacco and water used in making an in- vtu`t' fusion for spraying upon the average percentage. I r An improved method for determining nicotin in tobacco hm of and tobacco extracts has been worked out and described in an liszmge " article accepted for publication in the Journal of Agricultural y (_m_0_ Research. l'/*"/ Improvement of Orchard Grass. This is an important ll`il"* crop in Kentucky both for forage production and seed pro- A r'mtll duction. ln fact, a few counties in Kentucky produce more "~_ rel than half of the crop of orchard grass seed in this country. As *llllll`* a pasture crop it is constantly Ending greater favor with farm- ls else ers for its productivity and longevity. Like all the grasses. `**l$ft`l' it has been known for years that a great deal of variation ll lmlll occurs among the plants. but little work has been done any- tml et ' where toward separating the various strains. and determining l"ml their relative value for different purposes and possibly dif- fl`*lt ferent soils. Altho only a beginning has been made at this l`lllll Experiment Station, enough plants have been grown to show * "lllY tremendous variation in character of growth, vigor. etc., in- lll *` dicating that as the work progresses it will be possible to N select superior strains. V - { I mlysls- Alfalfa. The alfalfa variety tests which were sown in $"l*l l 1920 have shown that the hardy strains of alfalfa. (trinnn. ?lllllY (`ossack._etc.. stand the etfeets of late spring frosts nnnh bet- l' Tllf ter than the common alfalfa. ln lfl2l two hard freezes occur- 'li mill red after alfalfa had made a heavy growth. The common was to Fllltl very badly hurt while the hardy strains weiie injured but T Qlmtl . Slightly. The latter made a fair cutting ol' hay while with the ` lllttli ttf common strains. growth was effectively cheeked. Even the tlllllllflll second cutting of common was inferior to that from the hardy =at dif- strains. The common strains recovered from the effects of onnnon the freezes eventually and the rest of the year and in l922 ior to- made about the same yields as the hardy strains. The winters have been so mild recently that there has been no winter kill- ste and ing or even heaving of the eonnnon type. ln spite of the to base greater frost resistance, yields during the two years do not