Aphid colonization on new leaflet
Close up magnification of an aphid
This comparison shot was taken in 2003 at Chatham.The healthy looking soybeans were sprayed on July 13, 2003.
When aphid numbers soar controlling them can make a significant difference as shown in the above and below photo.IP growers can be particularly vulerable as shrunken, distorted and shrivelled seed can cause loss of an IP premium in a hurry.
Aphid numbers are reaching threshold levels in pocket areas north and east of London.Spraying will be warranted when 1) samples of 20 new vegetative leaflets taken from at least 5 different areas of a field ( covering 80% of the field )show an increase in aphid numbers above the threshold level of 250 per plant when soybeans are in the R1 - R5 stage of development ( flowering to first early pod set)The chart below shows how greater yield response is achieved with early spraying if aphid numbers are high enough and on the rise.
Aphid colonization on new leaflet
Close up magnification of an aphid
This comparison shot was taken in 2003 at Chatham.The healthy looking soybeans were sprayed on July 13, 2003.
When aphid numbers soar controlling them can make a significant difference as shown in the above and below photo.IP growers can be particularly vulerable as shrunken, distorted and shrivelled seed can cause loss of an IP premium in a hurry.
Aphid numbers are reaching threshold levels in pocket areas north and east of London.Spraying will be warranted when 1) samples of 20 new vegetative leaflets taken from at least 5 different areas of a field ( covering 80% of the field )show an increase in aphid numbers above the threshold level of 250 per plant when soybeans are in the R1 - R5 stage of development ( flowering to first early pod set)The chart below shows how greater yield response is achieved with early spraying if aphid numbers are high enough and on the rise.
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