New YorK AGRICULTURAL EXPERIMENT STATION. 127 
little early blight but no flea beetles. On August 6 we found 
the unsprayed rows dead and there was evidence that flea beetles 
had hastened their death. The sprayed rows still retained a 
part of their foliage. Mr. Foster states that the blight worked 
rapidly on the unsprayed rows during the latter half of July 
and that the sprayed portion of the field also became affected 
to some extent. However, at digging time only an occasional 
rotten tuber was found on the unsprayed rows and none what- 
ever on the sprayed rows. 
The items of expense for spraying I5 acres II times were as 
follows: 
mempsrrcopner sulphate, ( O.36 00... w ck ce cc bees we A Foils 8 ROC $62 . 37 
TDR Sie eae ES Bh Mr ag At NE a Ear Ro at 6.75 
eeeETOML IG PYECL (CD) 2OIGG. Fo ta OP Lk IE ees Bae 
eure: FOr Naty G20. +. dsc eee sie ees eth eed aw 26.40 
PEI NORE LON EATING) 20EU.8, Siuiwilid surelie fu wlks &Macted oqalle wetee Se 13.20 
RRERISTEDT AVON. 650. 23s ore oueia, wo rite Mindat A Meee LW Seite Aaa ie 15.00 
Ee net TORN tal Tone hin cA eiiies Pees db es beh Pi wae vad es daddies $146.25 
Experiment No. 36.— This experiment included two fields with 
four unsprayed rows in each field. The yields given in Table 
XVI are the average of two tests as follows: 
Test No. 1.— Four sprayed rows, 16 bu. = 108 bu. 12 lbs. per acre. 
Four unsprayed rows, 10 bu. — 67 bu. 37 lbs. per acre. 
Gain, 4o bu. 35 lbs. per acre. 
Test No. 2— Four sprayed rows, 18 bu. 162 bu. 46 lbs. per acre. 
Four unsprayed rows, 13 bu. 120 bu. 46 lbs. per acre. 
Gain, ‘el bu. per acre. 
In both tests there was considerable nse on the unsprayed 
rows but no rot among the tubers. 
Experiment No. 40.— The sprayer used in this experiment was 
the same one used in Experiment No. 9. Three rows 544 feet 
long were left unsprayed. 
Experiment No. 42.—The items of expense for spraying 6.5 
acres 5 times were as follows: 
BemrConner SHphate (7625. castes piniee Ri re SEs Maes eRe. a athlete $26.25 
Ne aig Cia larc in wiciienie Ae Re bb oinla « Self nk BE SRS ate Claas 3.50 
OY Gs SESS ce BO 0 Saale Cie GY eG ng CMBR. RCA AR can SALE 17.CO 
Wear on sprayer.-.........- eee Me OOD OF oe Ae ee pyr a ieee ee ae 5.00 
oh ENA ek a cA SOY RMRYENSEIE SPR TR Siac CARON Ge RAPE PDE BT $51.75 
