OF WEED SEEDS— Co] 
40 
IOWA ACADEMY OP SCIENCE 
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SujjButraj 08 
SP00S JO ’ON 
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No. of Days Required for Germination 
1 On 77tli day, 1 
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1 , 
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5 . 
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1 
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On 39tb day, 3 41st, 1 
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On 26th day, 3 
On 59th day, 1 1 
1 
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On 12th day, 
On 12th day. 13: 13th. 9: 16th. 3_ 
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On 9th dav. 2 _ , ^ , 
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1 
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si sissi sisii i is is ill ill sis ill 
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Bpa0s JO -ON 
FEBRUARY 
Name of Plant 
( Rumex crispus— 
Curled Dock 
1 
I 
ijamD s t, na,rror 
.Tiflmh’s Qnnrtpr 
Tia.mh’s Onart^r 
Lamb’s Quarter 
Amarantus retroflexus— 
Pierweed 
:1' 
EE 
jrigweea 
Pigweed 
ifl 
l|l 
Ambrosia art emisiae folia— \ 
Hogweed 
k 
XViiSWtJtiU 
Yellow Foxtail 
Yellow Foxtail 
Yellow Foxtail 
Setaria viridis— 
Green Foxtail 
1 
Old Witch Grass 
Panicum crus-galli — 
Barnyard Grass 
Elgmus robustus— 
1 Wild Rye 
SS ‘^gSiS S 55 
