Aphid Alert No. 7a, 1999

Aphid Alert

No. 7a, posted
29 July, 1999
last update 17 September

Published cooperatively by
departments of Entomology & Plant Pathology,
College of Agricultural, Food and Environmental Sciences,
University of Minnesota,
the University of Minnesota Extension Service,
and the State Seed Potato Programs of
Minnesota and North Dakota

Funding provided by:
1998 Minnesota State Legislature
& United States Department of Agriculture,
Cooperative State Research, Education and Extension Service,
Integrated Pest Management Program,
North Central Region

WWW address: <http://ipmworld.umn.edu/alert.htm>

Summary of aphid captures per trap in 1999 compared to same dates in 1998
	Aphids captured per trap (mean all locations)
1998			1999
Week ending	PVY vectors*	GPA	Week ending	PVY vectors*	GPA
			14 Jun	0.36	0.00
			22 Jun	2.08	0.03
			29 Jun	2.94	0.06
5 Jul	0.22	0.00	6 Jul	4.27	0.27
12 Jul	0.86	0.04	13 Jul	5.08	0.51
19 Jul	7.75	0.19	20 Jul	10.86	0.56
27 Jul	22.26	0.69	27 Jul	19.16	0.87
2 Aug	27.92	0.69	3 Aug	27.95	1.35
9 Aug	83.97	0.42	11Aug	17.93	2.87
16 Aug	223.76	2.20	17Aug	8.82	4.30
23 Aug	53.15	2.08	25Aug	8.50	3.19
30 Aug	67.34	2.88	31 Aug	10.33	2.04
5 Sep	28.77	1.92	7 Sept	8.00	0.55
13 Sep	8.13	0.26	13Sept	4.00	0.27
20 Sep	3.75	0.40
27 Sep	1.75	0.00
4 Oct	2.28	0.08

*GPA not included in PVY vectors

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Last modified: Friday, 17 September, 1999
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