Idaho
                Aphid
                                                    Flyer

James Johnson, Larry Sandvol, & Monica Wiebe
JUNE 9, 2000                                                                                                                                                                                                                                          Vol. 15 No.3

Pea aphids 
   There were a few pea aphids caught on the southern end of the state, but numbers were very low. 
Green Peach Aphids
    The only other news worthy event is that we have found green peach aphids colonizing north of Aberdeen in a commercial field. We are hoping that this is an isolated incident but we cannot be sure. They have also been found in Parma in the fields and in Kimberly in water pan traps. This seems to be a month early in the Aberdeen area. Farmers may want to start their leaf turning surveys and do so every 3-4 days. This is the University of Idaho's new recommendations.

PLRV/GPA CONTROL RECOMMENDATIONS

1. PLANT CLEAN, CERTIFIED SEED. REMOVE ALL VOLUNTEER POTATOES.
     -EVEN AT 0.05% THERE ARE 871 INFECTED PLANTS PER 120    ACRE PIVOT.
2. USE A SYSTEMIC INSECTICIDE AT PLANTING OR,  PLANT  VIRUS RESISTANT GENETICALLY MODIFIED CULTIVARS.
    -IF THERE IS A MARKET FOR THEM
3. DO NOT SPRAY TO CONTROL WINGED APHIDS
4. SAMPLE FOR APHIDS EVERY 3-4 DAYS
5. MAINTAIN A "NO GAP" PROGRAM OF CONTROL
6. SPRAY LATE SEASON SUSCEPTIBLE VARIETIES AT DETECTION OF SURVIVING WINGLESS APHIDS.
7. CONTROL APHIDS ON LATE SEASON SUSCEPTIBLE VARIETIES UNTIL VINE KILL.
8. DO NOT EXTEND GROWING SEASON PAST NORMAL VINE KILL IF POSSIBLE.
9. CONSIDER CONTROLLING APHIDS IN EARLY HARVEST FIELDS TO PREVENT MIGRATION TO LONG SEASON, SUSCEPTIBLE VARIETIES.

Funded by the University of Idaho Agricultural Experiment Stations and the Wheat & Barley Commissions.

IDAHO 
APHID   DATA

Samples collected May 26 & June 2

Cereal Others

Total

Suction Trap Location

 Russian Wheat Aphid Green Bug Bird Cherry Oat Aphid English Grain Aphid Rose Grass Aphid Corn Leaf Aphid Apple Grain Aphid Green Peach Aphid Potato Aphid Pea Aphid Spotted Alfalfa Aphid Bean Aphid (All Aphids)
Moscow - - - - - - - - - - - - 3
10
Lewiston - - -
1		 - 1
 1
 - - - 8
2		 -
 - 28
9
Parma - - 1
 -
1		 - - - - 7
1		 3
 - 14
8
Picabo - - - - - - - - - - - - NS
NS
Kimberly - - - - -   - - - 3
3		 - - 3
6
Burley - - - - - - - - - 1
6		 - - 6
18
Aberdeen - - - -
1		 - - - - - -
2		 - - 2
10
Rockland - - - - - - - - - 1
1		 -
2		 - 2
5
Arbon -
1		 - - - - - - - - - -
1		 - 1
6
Soda Springs - - - - - - - - - - - - 2
1
Ririe - - - - - - - - - 1
5		 - - 2
6
Tetonia - - - - - - - - - 3
 - - 4
2