Printable List of County Offices (PDF)
the final pest activity report for 2015. This article contains graphical
representation of season-long pest activity with number of insect generations
indicated on the graph. The Alabama map shows the statewide totals and relative
pest pressure for each pest species based on sticky wing pheromone trap counts.
Read the earlier blogs available on the Alabama IPM Communicator (look under
the category “Insects” in the navigation bar) for more information.
Has 5-6 generations in the south. Host
plants include bean, corn, cowpea, eggplant, pea, pepper, potato, tomato, and
many other vegetables. Field crops may include corn, cotton, peanut, sorghum,
BAW activity update: In 2015, overall we experienced a very high
activity of these insects with peak activity in July and August with almost 10
moths per trap per location on an average. Highest activity was recorded in
Central and South Alabama.
Fall armyworm (FAW): Has 4-5 generations
in the south – migrates upward from FL and populations get worse mid-
to-late-season on specialty or row crops. Prefers to feed on grasses then move
to various row crops and vegetables that include fruiting crops.
FAW activity update: There was a late onset
of these insects on vegetable and row crops with peak activity in late August
and September. Highest trap catches have been seen in Central and North Alabama
with much lower average insect numbers and heavy fluctuations in moth flight. Hay
and livestock producers should visit this website for updates about armyworms posted by Dr. Kathy Flanders.
Infestations happen from migrating populations or moths may be moved by weather
systems. SL attack soybean and peanuts among other row crops. Also attacks many
summer vegetable crops during late season. There can be 5-6 generations of
these insect pests in the south.
SL activity update: SL moth activity started late in August and
September across Alabama with pest pressure reaching high levels (8 moths
average per trap) at the majority of monitored locations. Greatest SL activity
was observed in North and Central AL where there are large acres of suitable
host crops. We have detected about 6 generations of the moths that causes heavy
pest pressure on row crops.
We have a few locations across AL where
we are monitoring this highly migratory insect. Adult moths are known to
overwinter in south Florida. Host plants include a variety of crucifer crops
along with sweet potatoes, beans, peas, squash, tomato, and watermelons. There can be 5-7 generations of these insect
pests in the south.
CL activity update: Overall, CL activity was
low across the state (about 2 moths per trap across loactions); this activity
level was much lower than soybean loopers. Highest trap catches were recorded
in Central Alabama from vegetable crop fields. Due to overlapping generations
(nearly 6), late-planted crop is at greatest threat from this insect.
Also known as the tomato fruitworm. It has
about 5-7 generations in the south. Corn, tomato and cotton appear to be
favorite crops among numerous others row and horticultural plants that may also
be attacked. Tomatoes are a favored host for CEW moths to lay eggs if corn is
unavailable – so vegetable producers should watch out and scout intensively to
detect this pest at the earliest!
CEW activity update: Activity of this major
pest was low across the state with nearly five or six generations and peak
activity was recorded in August. Highest moth numbers (2 moths per trap per
location) were recorded from South Alabama.
Tobacco budworm (TBW): Has about 5 generations in the south. Host
crops include cotton, soybean, and peanuts among others. May also attack
vegetables as pea, pepper, pigeon pea, squash, and tomato.
TBW activity update: No major outbreaks of
this insect were reported in 2015 from peanut or vegetable fields. Pheromone
traps detected at least one moth at about 60% monitored locations but the
overall moth activity was very low across Alabama. Peak moth activity occurred
in late August with about 5 generations.
Lesser cornstalk borer (LCB): 3-4 generations may
occur. Prefers various legume (including peanuts and soybeans) and grassy
crops. In peanuts, LCB damage can cause rapid yield loss along with severe crop
contamination during hot dry weather conditions. This insect can also devastate
large acres of soybean fields under favorable conditions.
activity update: We detected several peak activity periods for this insect with
over 5,000 moths counted throughout the season trapped near peanut fields.
Average number of moths was 60 per trap per location – the highest for any
insect pest observed in this IPM project. Highest trap catches have been
recorded from Central and South Alabama.
Squash vine borer (SVB): Has one to two
generation per year depending on location. Moths are day-flying and they can
migrate long distances during early spring to find host plants. Moths look like
wasps and lay eggs on the stem close to the soil. Caterpillars cannot be killed
once they burrow inside the plant stalk, so use pest prevention tactics.
activity update: This insect was very active in vegetable fields with nearly 7
moths per trap in Central Alabama. There
were at least two generations of this pest in Central and South Alabama with
peak activity in July and August.
Acknowledgement: The data visualization maps above have
been developed using MyTraps.com (Spensa Technologies, IN). We appreciate the
assistance provided by Regional Extension Agents and producers for data
collection/pest monitoring. Thanks to Luke Knight and Lucinda Daughtry
(Undergraduate Project Assistants) for assistance in the insect monitoring
project. We are very thankful to the Alabama Specialty Crops Grant and the
Alabama Peanut Producers Association for funding this insect monitoring
questions, please call Ayanava Majumdar,
251-331-8416, email@example.com or use the resources below.
pages: Alabama Vegetable IPM or Alabama
to the Alabama IPM Communicator newsletter, visit www.aces.edu/ipmcommunicator
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