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ALFALFA INSECT AND DISEASE MAPS
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• A map showing the insect's presence in Iowa, based on current data from the on-farm trial sites around the state  
• Recent research, scouting tips, and thresholds.  (Additional insects and diseases are listed in
the Field Guide .)		  
• Archives of the weekly maps from earlier scoutings  
ALFALFA INSECTS      

ALFALFA WEEVIL

(Updated August 29, 2005)

PEA APHIDS

(Updated August 29, 2005)
 

BLACK STEM

(Updated August 29, 2005)

PLANT BUGS

(Updated August 29, 2005)
 

CLOVER WEEVIL

(Updated August 29, 2005)

POTATO LEAFHOPPER

(Updated August 29, 2005)
 

LEAF SPOT

(Updated August 29, 2005)

MEADOW SPITTLE BUGS

(Updated August 29, 2005)
 
2005 Scouting Notes -- Week 17 (August 22 - 28)
Field Code
 
Scouting Date
 
Scouting Notes
 
Regrowth*
GOME23   8/29/2005   .3 PLH/sweep in more than 12" of alfalfa regrowth.   4
HILL31   8/28/2005   0.1 potato leafhopper/sweep in more than 12" of alfalfa regrowth. Northern corn rootworm beetles, pea aphids, and plant bugs present. Will be taking last cutting soon.   4
HILL32   8/25/2005   .1 plh/sweep in more than 12" of alfalfa regrowth. Bean leaf beetles, pea aphids, and Northern corn rootworm beetles present. Also will be cutting for the last time this week.   4
KIRK02   8/26/2005   Alfalfa is starting to bloom. Will wait another week or two before cutting.   4
KIRK06   8/26/2005   Alfalfa has not started to bloom.   4

*Height of regrowth : 1=<3", 2=3-6", 3=7-12", 4=>12"

©2004 Iowa Soybean Association