Survey Weeds Now

Outdoors

 

By: Eddie Ayers, County Extension Agent

Late summer/early fall is an excellent time for you to survey or map the weeds in your pastures, hay
fields, orchards, and lawns, but it’s not the best time to spray. The majority of weeds growing in early fall
are usually summer annuals and summer perennials. Many people want to control summer annual weeds
that are present, but treatments now are usually unsuccessful. Your time would be better spent mapping
out your control strategy for next year.

Herbicides are usually more effective on weeds that are young and actively growing. The large size of
summer weeds makes them easy to identify for mapping out heavy infestations or "hot spots." Knowing
which weeds might be causing a problem and their location in the field allows you to develop a control
strategy for next year’s summer weeds.

For example, with fall here, many pastures are turning a brilliant shade of yellow. This is usually from a
problem weed called bitter sneezeweed but it could also be ragweed. Late summer or fall is not the
preferred time to control bitter sneezeweed or ragweed. Instead, controlling them in the seedling stage of
growth is cheaper and more effective but this is determined by scouting your lawn or pasture now.
Remember that proper identification is critical. A heavy frost is probably the best control for summer
annuals in the fall, but if you want to control them from spring thru summer, make notes now.

The key to low cost weed control is to match the most cost effective herbicide to the weed problem and
then apply the herbicide at the correct time of the year. The correct identification is needed so that you
can apply the correct herbicide. Keep in mind that there are two basic categories of herbicides. The two
categories are pre-emergence and post-emergence.

A pre-emergent herbicide is applied before the weed appears. This also means before the seed
germinates. If you plan to use a pre-emergent herbicide, it is extremely important to know what weeds
you had this year because chances are those are the weeds you will have next year. You can however
apply a pre-emergent now for winter weeds. One tool to keep in mind is the UGA weather network found
at www.georgiaweather.net which will give you soil temperatures so you can determine if it’s warm
enough for a seed to germinate. In the spring seeds usually germinate when the soil temperature is around
60 degrees.

A post-emergent herbicide works after the weed has germinated, but you need to apply it early in the
growth cycle as the weed is easier to kill when it is small. There are exceptions, but in general, late May
and early June are the preferred times to control summer annuals. Most weeds will be in the seedling to
early vegetative growth stage at this time and will be more susceptible to control by the herbicide. For
winter weeds November is a good time to apply a post-emergent.

For more information, contact me in the Gilmer County UGA Extension office.

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Controlling Springtails

Outdoors

Over the past few weeks, many people have either called or come by the office with a
question about tiny, purplish-brown, hopping insects around or in their homes. These tiny
creatures are springtails.
Springtails are one of those insects that you may wonder why are they here on Earth. But
in reality, they serve a useful purpose by eating decaying plant material. They mostly live in the
soil, leaf mold, organic mulches or decaying logs. They are soft bodied so they are attracted to
moist areas to keep from drying out.
Usually springtails stay outside among the mulched areas of the yard. But on occasion
you will find them in the home around sources of moisture like sinks, bathtubs and toilets.
Keeping these areas as dry as possible is the first step in controlling springtails in the home. In a
dry environment, springtails will eventually dry out and die.
Chemical control is not necessary, but insecticides can be used. If you choose to use an
insecticide application make applications around windows and doors. Also spraying around
bathroom plumbing where the pipes come up from the basement or crawlspace will be effective.
When spraying outside of the house you have to apply insecticides with plenty of water in order
to get the chemical through the mulch and soil layers. Because it delivers a high volume of
water a hose-end spray is a good tool to do the job right. A pump-up sprayer will simply not
apply enough water with the chemical to penetrate through the mulch to the soil.
When applying an insecticide inside use an insecticide that is labeled for inside the home use.
Many of these come in a 1-gallon jug that is ready to use. For spraying outside, use an insectide,
which is labeled for scorpions, boxelder bugs or of course springtails. If you choose to use an
insecticide, remember to read and follow the labeled directions.
One other suggestion is to move any mulch away from the foundation of your home. Not
only will this help reduce the infestation of termites or scorpions by not allowing them a direct
pathway to get to the foundation, but also it will allow you to effectively spray in the soil layers.
Springtails are not going to cause major harm to your home, but they sure are annoying
and unsettling for most people. If you have any questions, please feel free to contact me by
phone at the office or send me an e-mail.

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