10 
BULLETIN 528, U. S. DEPARTMENT OF AGRICULTURE. 
CROPS 
JAM 
FEB. 
MAR APR.ImAyIjUN. 
JUL. 
AUG. 
SEP 
OCT. 
NOV 
oca 
MANURE CULTIVATE 
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• ■■■i 
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PLOW I 
mmmwm 
i 
MANURE 
■ ■■ a aaaaaaai a* 
ROLL 
PLOW 
CORN 
• ■••••■■■ill i 
DISC HARROW 
• ■••■«■■■ 
CUT 
• •••at 
HUSK 
■ •Ml 
SPRING TOOTH HARROW 
• aaaa 
•• 
■ ••■■■■••as 
SPIKE TOOTH HARROW &WEED 
HAUL6RAIN 
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DRILL FERTILIZER 
■ ■■• ■■■■>• 
HAUL STALKS 
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1 PLANT 
1 TT 
MANUR 
CULTIVATE 
MARKET 
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PLOW 
mint 
SPRAY 
■■■aaaaaaaaaai 
•a a aaaaaaaa 
■■aaaa 
mmmmm 
ROLL 
OIG 
•••*■■>■>•• 
■ »m aaaaaaaaa a • ■ • 
POTATOES 
DISC HARROW 
PICK UP fit BAG 
■ ■■ —ammmt «•■ 
f ■■■amiiiii 
SPRING TOOTH HARROW 
HAUL 6c STORE 
•■■■•■■■■■■•■• | 
PLANT 
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a ■ a aaaaaaat • a> »• 
SPIKE TOOTH HARROW 
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r \ 
PLOW 
• ■■•■■■■■a 
ROLL 
CUT 
• a* aaaaiiaa 
•aaaaaaaa> 
OATS 
HAR 
i 
p— 
SHOCK 
mmwmmm ••• 
HAUL TO BARN 
swaaan 
THRESH 
a a aaaaaa ■ ■ ■■• a ■ 
PLOW 
ROLL 
a •• BBJIII aVaVaaaaaf ••»■•» 
DISC HARROW 
WHEAT 
laiiiiiinMiiitt 
CUT &SHOCK SPR. OR IKE TOOTH HARRYf 
■ aaaBia aa • a«a» aaaaaaai 
■aaaa 
HAULTOJJARN | # ... 
5EED 
■aaaaai 
JTHR 
aaaaja mi 
■tvtV. 
SEED 
CLOV 
■■■■■■ 
:r 
L 
B- MANURj 
PLOW 
■■aaiaaaaai 
ROLL 
CLOVER 
■aba aalaaa 
HARVEST | 
• 
8a 
.aaa.aaaaaa.. | 
TIMOTHY 
OISC HARROW 
• aaaaaaaaaaa 
SPRING OR SPIKE TOOTH HARROW 
■ aaaaaaaaaaia* 
lIme 
I *■■*■■■■■ 
Ueed 
p"""™ 
■•• 
MANURE. 
MANURE 
...MANL 
PLOW 
I ••••■>■•• 
DISC HARROW SCROLL 
• ■■■■■■■■)■)•■) 
ALFALFA 
LIME 
SPRING OR SPIKE TOOTH HARROW 
at ■■••)••■■•••••• 
FERTILIZER .»NO£ULAT£ 8c SEED 
HARVEST IGUT. 2 CUT. 3 CUT 
i v f i ■ r i 
Fig. 1.— Periods of performance of farm operations (Chester County, Pa.). The full line represents the 
period when most of the farmers perform these operations, and the dotted line gives the range within 
which these operations may be performed, 
