MEDICAGO FALCATA, A YELLOW-FLOWERED ALFALFA. 43 
include the common commercial strains of J/edicago sativa to a suth- 
cient extent. Nevertheless, the results from these and other plantings 
go far toward proving the hardiness of J/edicago falcata. 
In the fall of 1910, counts were made of plants of one variety of 
Medicago sativa, three hybrid strains, and several numbers of J/edi- 
cago falcata at Brookings and Highmore. At the former place the 
plants were grown in hills 24 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’* grown at Brookings and Highmore, S. Dak., 1910-11. 
Brookings. Highmore. 
Species. cee. Jt, Living plants. Living plants. 
SULVIV= pete ea | 
Novem- | April, rus Novem- | April, vs 
ber, 1910. 1911. | ber, 1910. 1911. 
Per cent. Per cent. 
Medicago sativa... .-- eee ar ee 20711 238 231 97.0 112 15 13.3 
Mecmcaee sativa X Medicago fal- 
COPY i eae es eS a nt a ary eR Ra 20571 256 252 98. 4 119 85 71.4 
OR See OU NS Se eh ieee, 20714 497 488 98.1 111 18 16.2 
IDO) es seh Seen ee eee aes 20716 298 287 96.6 74 20 27.0 
Medicago falcata......-.-------- 20717 265 264 99.6 355 344 96.0 
ORIN SHS BORA Se Soe See es 20718 318 305 95.9 148 144 97.3 
1D) One eye eae eee sea 20719 245 242 98.7 323 323 100 
iD) ONS Braue eater ao eetes lath 20720 65 65 LOO Reet a Se EAS oes e lie ese ee 
1) OR ees ae ees ae 20721 261 PS 98.4 350 297 84.8 
LD Oaiea raised are lee tnats westerns 20722 250 244 97.6 286 245 85.6 
ID Ope SR Si eae bah ee 20724 39 39 TOO na) tes=- nies Oa eR Sees eR learn Se eee 
ID YO 25 8 Be eee Oe eRe 20725 259 259 100 354 334 94.3 
ID) Oates ee wre ee ee 20726 311 311 WOO Sil ctecee oe epee saetew alate nasi 
IDO). eee eee ee eee 24452 771 771 100 185 182 98.3 
1D) OES ae Seto cis wate is Seis 24453 56 56 TOO iy ie See e lee ess oaleceee eee 
1D XO) A Rea ee Se eee art eae 24454 501 501 LOOM aa Sacer cee oicee ee eae 
IDO aS ANS aCe See Eee eae 24455 322 322 TOO. Si Sos eels, ee el See ene 
JD XO) Teeter ee ae ee 24456 61 61 LOO S| Se ee eee ree Ol ee 
Average percentage of survival: 
Medica cojsaitivans sen Te walt 7 ioe Pay oe iat oS ea eae | OR On ete waas ale esas 13.3 
Medicago falcata x Medicago 
REN elie Bers ce eae, Sey el Te ese ara tela ee lest ces fe SRAM ley ees ear Rae Ble mee Sie 38. 2 
IMedicar otal ca tase seen ese Era nee elas. chee | Fe ee GOR 2S ae een eosee ene 94.8 
1 The Medicago sativa variety used in this test was a selected strain of Turkestan alfalfa. The hybrids 
were the North Sweden, Cossack, and Cherno varieties. 
The minimum temperatures for the winter months at Brookings 
and Highmore are given in Table V. 
TABLE V.—Minimum temperature (°F.) in each month of the winter of 1910-11, 
at Brookings and Highmore, S. Dak. 
Novem-| Decem-|} Janu- | Febru- 
Locality. ber. ber. ary. ary. 
STOO kel See eek aon se Megeh fa Oe ag Se ee ed eee ee 5 | —16 —32 —9 
EITC AUM OK CtmraN er eneis ee ican etna he Lene n eet 2 eens en beeen ae eS. 3 | —18 — 24 — it 
