MEDICAGO FALCATA, A YELLOW-FLOWERED ALFALFA. 



43 



include the common commercial strains of Medicago sativa to a suffi- 

 cient extent. Nevertheless, the results from these and other plantings 

 go far toward proving the hardiness of Medicago falcata. 



In the fall of 1910, counts were made of plants of one variety of 

 Medicago sativa^ three hybrid strains, and several numbers of Medi- 

 cago falcata at Brookings and Highmore. At the former place the 

 plants were grown in hills 21 by 36 inches, and at the latter in hills 

 44 by 44 inches. The following spring, counts were made to deter- 

 mine the percentage of plants that survived the winter, with the 

 results shown in Table IV. 



Table IV. — Comparative winterkilling of Medicago falcata and Medicago 

 sativa ^ gronm at Brookings and Highmore, 8. Dak., 1910-11. . 





S.P.I. 

 No. 



Brookings. Highmore. 



Species. 



Living plants. 



Surviv- 

 ing. 



Living plants. 



Surviv- 

 ing. 





Novem- 

 ber, 1910. 



April, 

 1911. 



Novem- 

 ber, 1910. 



April, 

 1911. 



Medicago sativa 



Medicago sativa X Medicago fal- 

 cata . 



20711 



20571 

 20714 

 20716 



20717 

 20718 

 20719 

 20720 

 20721 

 20722 

 20724 

 20725 

 20726 

 24452 

 244.53 

 24454 

 24455 

 24456 



238 



256 

 497 

 29S 



265 

 318 

 245 



65 

 261 

 250 



39 

 259 

 311 

 771 



56 

 501 

 322 



61 



231 



252 



488 

 287 



264 

 305 

 242 



65 

 257 

 244 



39 

 259 

 311 

 771 



56 

 501 

 322 



61 



Per cent. 

 97.0 



98.4 

 98.1 

 96.6 



99.6 

 95.9 

 98.7 



100 

 98.4 

 97.6 



100 



100 



100 



100 . 



100 



100 



100 



100 



112 



119 

 111 



74 



355 

 148 

 323 



15 



85 

 18 

 20 



344 

 144 

 323 



Per cent. 

 13.3 



71 4 



Do 



16 2 



Do 



27 





96.0 



Do 



97 3 



Do 



100 



Do 





Do 



Do 



Do 



350 

 286 



297 

 245 



84.8 

 85.6 



Do 



354 



334 



94.3 



Do 





Do 



185 



182 



98 3 



Do 





Do 









Do 









Do 

















-Vverage percentage of .survival: 

 Medicago sativa 









97.0 



97.7 

 99.2 







13. 3 



Mwlicago falcata X Medicago 













38.2 



Medicago falcata 













94.8 

















1 The Medicago saliva variety used in this test wa.s a selected strain of Turkestan alfalfa. The hybrids 

 were the North Sweden, Cossack, and Chemo varieties. 



Tlie minimum temperatures for the winter months at Brookings 

 and Iliglimore are given in Table V. 



'J'ahi.k \'. — Mininiuiii l<iii jicnil iirc {" I'.) in cdcli, iiiontli of llic irinlcr of t!H()-tl, 

 at UrookinyH and Highmore, S, Dak. 



Locality. 



BrooklngR. 

 Highmore. 



Novem- 

 ber. 



Decem- 

 ber. 



-16 



-18 



Janu- 

 ary. 



-32 



-24 



Febru- 

 ary. 



