RED-CLOVER SEED PRODUCTION. 
23 
brushes B, C, E, B, C, and E, respectively, in the same manner as 
plat 8. 
Two days later plats 16, 17, 18, 19, 20, and 21 each received two 
more treatments with brushes B, C, E, B, C, and E, respectively, and 
three days later plats 19, 20, and 21 each received an additional two 
treatments with brushes B, C, and E. 
Plats 22 to 26, inclusive, were square-rod plats selected at intervals 
in the field immediately surrounding the portion laid off with the 
regular plats. 
These were designed to give a large number of check 
plats to show the variation in the field under ordinary conditions. 
At harvest time 500 heads were picked at random from each of the 
26 plats. 
for the 500 heads is given in Table VI. 
These heads were hulled and the average seed production 
TaBLe VI.—Average seed yield per head obtained when clover heads were struck horizontally 
with different types of brushes and at different intervals at La Fayette, Ind., in 1911. 
N Strokes per} Brush Date of Heads Seeds 
ae treatment. | used treatment. | collected.| per head. 
TEV EAE IL, (OOUNGMes 2 oes os TS ie a is es rc ered ears Bema ral |W Spi ae te (ea ee ee ee 500 58. 2 
lat Deere Fe SS Sls Bie ee IC EN ere ree ee ae 1 A August 2... 500 46.0 
JEUYE Bie aA Sana as Se hes Mem eee nn eee enna ee were eR 1 Bigg eens dogs =e 500 67.1 
JVB G Gh eee GS Se is Oe are arn A sella ee er naeeeD 1 (OR a aera doe 500 50.1 
TP UGH Bila) est5 es See oes chore ea em ea cen ee en ee ere eae 1 1D ee ea do. 500 27.0 
TPN DiS Sic cas apts pects eae ice es ea ee 1 Ian ee see do. 500 39.4 
IPIGIR 7 6S SUR ONCE SEE Ee ECCS OTe ee eee ee eres Cee 1 1 Rig eae do... 500 34.7 
IP Gas 6 se She soe Be ce ue ae selene Seana Sone 2 DN Mee epee do. 500 44.0 
JP eH ONS 3 ee es Sates a Pepin Rie eRe Mar iens) are Gp eee 2 Bw a | See do 500 35. 4 
VP UBM) aes oe Slee ea ee ee a re ae 2 Op alseese do.. 500 59.4 
IEA ei ple Beare See he (es ky aha tee a heehee Seo. 2 1D) Salsas do.. 500 27.2 
IRI PS 3 Sis mesnacs SSeS orate aoe e sae anes a eee 2 Ii ileeeae do 500 34.7 
JP HENS 13} rele ieee 15 os Sis Cece oe eee ta es ae et ee a 2 Ne eee do. 500 59.9 
Al eG COCK heya oe es rete neers See rate a | loo seertye | eeteaisacie (ts Sarees clea oe 500 49.3 
IP ep ley (nC Oley taricads sstcubodd sanece ae aae oo oa oe Soe a eel cc serie cea eee ee 500 57.0 
1 atHlO ee eee a ae en ena Ree ee LT a 2 B August 2, 4.. 500 69.9 
APNE ECL S See oe eee ey ae ee ee eae ene 2 (O05 eee dom 500 26.9 
TPB Boke) = Sake ee eae epee mie pee er Sate Ra 2 Iie erleaees donee 500 64.4 
TPE UCC aie E95 5 sR ea ra OS fet ee ae 2 B August 2,4,7 500 35.4 
Vee AU 2 eer oe eae aa a I 2 Chek seae Gove ae 500 32.0 
VTS AM ei ea Care Ae ee ie Sa ») 1D el eee doers 500 22.5 
JPY, AZ, CLOUT AN hed IE a Ne ee ll ay ee |r trDea e e 500 28.6 
Iilehn 28s, Csveelkes = re ewaaee Se Deere cee es Ite See real eas eee a ee a ar 500 59.0 
IPE OU ONGC ag Cee ee She moe eS tesa eee pee nas o |e a SCeene Lee Oe See 509 49.5 
IPN E 75), CONGO ee eee oe saad Dobe n Ono ono cee SOS eee ae EM eo ool [ree ate ilies 500 43.2 
IAQ HS GUC eibets sa sen teu no cause Se ea eed eoh el Go Gua Jee es eran een are ee 500 31.6 
VOTERS: ON QULONCOGSE = Se coeconoeainesue as sollededon pouoos| Baeneees Seeaeee eee seas 4,000 47.0 
Table VI shows that only 6 plats averaged higher than the average 
of the checks, whereas 12 plats averaged lower than the average of 
the checks. 
A variation almost as wide is shown in the 8 check 
plats as in the 18 treated plats, yet the results show that, as a whole, 
the brushes injured the seed production. 
The low results on the 
plats treated with brush D, the wire hair brush, were undoubtedly 
due to the fact that the wire bristles penetrated and injured the 
flowers. 
This brush work was duplicated on a small scale with brushes A, 
B, and E on a few heads left uncovered and on heads that were 
covered with tarlatan, near La Fayette, in the summer of 1913. 
The heads were worked once. 
The results are given in Table VII. 
