Source: Jim Dunphy Extension Soybean Specialist, Steve
Koenning Extension Plant Pathologist, NCSU, 10/10/13 Soybean
rust was identified on a soybean sample submitted by Mac Malloy on a sample sent
from Robeson County, 39 of 39 leaves had pustules. Additionally, sentinel
plot samples from Wayne (2 leaves out of 34), and Johnston (9 out of 25).
Bennett Wilder of Columbus County submitted a sample yesterday that was
confirmed to have rust (23 of 44 leaves examined). Yesterday in an email
Steve Gibson found rust in Catawba County and reports that most fields in that
part of the state have some rust. Thus far we have found rust in 10
of this states counties and assume that rust can be found in most any field that
still has leaves. Combined with the confirmed finds in VA, essentially all the
state’s soybeans are within 100 miles of known rust.
We
would consider that rust spores are probably in any soybean field in the
state. Rust will likely progress rapidly in fields that still have soybean
leaves but most soybean is at a stage where fungicide applications are
prohibited. Late planted soybeans are still at risk though it seems likely that
much of the states’ soybean crop will not be affected adversely by rust this
year. |
