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AgriLife Extension community fire ant control program a template for success

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By: Paul Schattenberg

Long-term effort in Texas neighborhood employs ‘two-step’ method

Writer: Paul Schattenberg, 210-859-5752, paschattenberg@ag.tamu.edu

Contact: Elizabeth “Wizzie” Brown, 512-854-9600, ebrown@ag.tamu.edu

ROUND ROCK – For more than a decade, Texas A&M AgriLife Extension Service integrated pest management program specialist Wizzie Brown has been engaged in a community-wide battle against one of the state’s most persistent pests – the fire ant.

Since 2005, Brown and residents of the Wood Glen community in Round Rock, north of Austin, have collaborated in a neighborhood fire ant program to control the proliferation of fire ants, eliminate their unsightly mounds and keep them from biting area residents.
Multiple queens also means there is no territorial behavior, resulting in excessive numbers of fire ant mounds per area, with many actually spread over larger areas than can be seen.“Fire ants roam from yard to yard and have no regard for property lines,” Brown said. “They’re  easily dispersed during their periodic mating flights, and a high percentage of mounds in Texas have multiple queens, which can live for two to five years and produce up to 800 eggs per day.”

“To my knowledge, the Wood Glen effort in Round Rock has been the longest-running community-wide fire ant program in the state and probably in the U.S.,” Brown said. “We recently carried out the fire ant baiting portion of the program and held our annual fire ant education day for the community.”

The Wood Glen neighborhood has 548 homes and covers over 250 acres. It includes a community park, green belt and walking trails.

“Originally the community came to me,” said Brown, who has been at the AgriLife Extension office in Travis County for the past 15 years. “I got a call from one of the residents who knew our agency was part of the Texas A&M University System and that we provided information and technical assistance on various quality-of-life topics. They wanted to know if we could help them with their fire ant problem, which was pretty extensive.”

Brown said she gave a fire ant control demonstration to the residents on the “two-step” treatment method, which is the agency’s preferred fire ant control method. The first step involves semi-annual broadcast applications of fire ant bait. The second step involves follow-up treatments of individual mounds or “nuisance” ant colonies, such as those in sensitive or high-traffic areas.

“The two-step method is less labor-intensive, less toxic and more environmentally friendly than most other means of do-it-yourself fire ant control,” Brown said.

For more details on the two-step treatment method and others, go to the eXtension website at http://bit.ly/2oZoL46 or Texas A&M AgriLife Extension Bookstore at http://bit.ly/2oswCGp.

Brown said similar community-wide fire ant control efforts have also taken place in Bexar and Harris counties in collaboration with the integrated pest management specialists in the AgriLife Extension offices in those two counties.

David Schell, a Wood Glen resident and homeowners association board member, said the treatments in the Round Rock neighborhood have yielded positive results.

“The fire ant program is highly effective at controlling fire ants in both the common areas and homeowners yards,” Schell said. “In the five years I have lived in Wood Glen, I have not seen any fire ant mounds in my yard.”

Brown estimated the overall efficacy of fire ant treatment in the community at more than 99 percent, with “almost zero” sightings of mounds or incidents of children or adults being bitten since treatment began. In addition, a survey Brown conducted on the Wood Glen effort in 2010 documented a 64 percent reduction in pesticide use and $20.73 savings per participating household.

“We only did the front yards with the residents’ permission so they could see what was going on,” Brown said. “They were so pleased with the results they persuaded their homeowners association to put the cost for fire ant control into the budget. Now their homeowner dues pay for two bait treatments per year – one spring and one fall – for the front yards. A few years back, we gave that responsibility over to a pest control company. And each year we also hold a fire ant information day in the community during which we provide information on baits and advice on their proper application for residents who want to treat their backyards.”

Elizabeth “Wizzie” Brown (right), entomologist and Texas A&M AgriLife Extension Service integrated pest management specialist in Travis County, demonstrates the proper use of a hand-held spreader for a Wood Glen resident during the recent fire ant education day. (Texas A&M AgriLife Extension Service photo)

Brown said Wood Glen wasn’t the only community in which she and community residents have attempted a long-term fire ant program, but it’s the only one that has lasted.

“We have tried to keep a program going in three of four communities in the Austin area, but they eventually stopped, usually because the community lost the neighborhood ‘champion’ spearheading the effort and the community lost interest,” she said.

Brown said the Wood Glen program’s success has largely been due to active community involvement combined with an engaged homeowners association that has been respectful of residents’ wishes and forthcoming in communications about treatments.

Sam and Leslie Myers, who moved from the Wood Glen neighborhood about four years ago, were involved in fire ant program efforts in the community for about five years.

“There were a lot of stay-at-home moms in the neighborhood and they were tired of their kids getting bit by fire ants both in their yards and the community park area,” said Leslie Myers. “We were the second residents in the neighborhood to take the lead for the program after Wizzie got it started.”

The Myers’ role consisted of coordinating with residents on broadcast baiting timing as well as helping with education day efforts, including providing residents with bait and selling them hand-held spreaders if needed.

“Typically from 100-200 residents came to the community’s fire ant education day,” Sam Myers said.

The Myers also kept the community apprised of their fire ant control efforts through the community newsletter and by giving updates on the program during the annual homeowner association meeting.

“Once the pest control people took over broadcast baiting of the front lawns, they were great to work with and always checked to make sure who had opted out for the treatment,” Leslie Myers said. “And the education day out in the community, where we set up a table and people had to wait in line to get their fire ant bait and spreader, gave residents the opportunity to talk and get to know one another.”

The Myers, who are also Texas Master Gardeners, explained their knowledge of gardening and landscaping was a good tie-in with fire ant control in that it made them aware of beneficial and non-beneficial insects and the need for fewer chemicals in managing their landscape.

In 2011, Brown and her family moved into the Wood Glen neighborhood, where she remains actively involved in the program, providing information and technical assistance, particularly during the neighborhood fire ant education day.

“This is a great family neighborhood and I’m glad I can live here in addition to providing expertise for fire ant control and other aspects of integrated pest management,” she said. “But you don’t need an entomologist living in the neighborhood to have a successful pest management program. All you need is a community champion and people willing to support it.”

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Farm & Ranch

Tracks in the Sand

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This morning, I walked out into my arena and noticed something that gave me pause. The roping steers had been in there the day before, and even though the ground was wide and level, the sand carried their story. Hoofprints crossed every direction, but in several spots, the same trail was pressed deeper than the rest. Twelve steers had been turned out, yet more than a few chose the exact same path, wearing it down until it stood out from all the other tracks.

Cattle are creatures of habit. Anyone who has spent time around them knows this. They like routine: the same feed, the same water trough, the same shade tree in the pasture. When they are turned loose, they rarely wander without purpose. More often than not, they move together, following the same course as the steer in front of them. There are reasons for this: efficiency, safety, instinct. Walking a beaten path conserves energy, and following the herd is their natural defense. Even in an arena with no real destination, those instincts come through. By the end of a short turnout, you will see the evidence, lines where they have chosen the easiest way to travel and stuck with it.

Out on the range, those lines last longer. Before fences and highways, cattle drives cut deep paths across the land. The Chisholm Trail, which carried herds north from Texas through Oklahoma into Kansas, was walked by millions of cattle in the late 1800s. More than a century later, faint traces of those trails remain, worn so deep by hooves and wagon wheels that the land still carries the mark. On ranches today, you can see the same effect in pastures where cattle walk the same lines between water and grazing. From the ground those trails might look like nothing more than dusty ruts, but from the air, they sometimes stand out as sharp lines winding through otherwise open fields. Cattle do not simply pass over the land; they shape it. Every step adds up.

That simple truth extends beyond livestock. We all make tracks. Our habits and routines are our trails, worn in by repetition, sometimes efficient, sometimes limiting. Like the cow paths, they can serve a purpose, keeping us steady and helping us move forward. But when repeated without thought, they risk becoming ruts, keeping us from stepping into new ground. History offers perspective here too. The old cattle trails built towns and economies, but once railroads and fences changed the landscape, those paths were no longer useful. Sticking to them would have meant going in circles. Progress required something new.


The Tracks We Leave

Standing in the arena, I thought about the kind of tracks I leave behind. Most of mine are not visible in the dirt. They are pressed into my daily life, how I work, the way I handle challenges, the example I set. Some are helpful and worth keeping. Others may have outlived their purpose. The difference comes in knowing when to stay in the track and when to step out of it.

Tomorrow I will drag the arena and smooth it all clean again. The next time the steers are turned in, they will make the same trails. That is their nature. But unlike them, I have a choice. I can decide which paths are worth walking, which ones to change, and what kind of tracks I want to leave for others who might follow.

Tracks tell a story. Sometimes they are only temporary, fading with the next rain. Other times they last for generations, reminders of where herds and people once walked. This morning, the cattle showed me again that even the smallest things on the ranch carry meaning. Their tracks in the arena were not just marks in the sand. They were a lesson: every step matters, and the paths we choose shape more than just the ground beneath our feet.

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Grazing North Texas – American Lotus

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Farmers and ranchers are in a very close partnership with Mother Nature. If we really pay attention, she presents us some interesting scenarios.

For example, though they are totally different types of plants, water lilies and prickly pear have a lot in common. They both have strikingly beautiful flowers, both plants are edible, both of them are invaders into their respective habitats, and too much of either one can be an obstacle that we have to deal with.

Many north Texas ranches rely on excavated ponds for livestock water. Any time a pond contains a significant amount of shallow water so that sunlight reaches the bottom, some type of pond weed will develop. The plant family that includes water lilies and lotuses is a common invader in our livestock water.

Water lilies and lotuses are in the same plant family but they are two separate genera. There are easy ways to tell them apart:
• A primary difference is that water lily leaves commonly float on the surface, but lotus leaves can grow above the water line.
• Water lily leaves and flowers are thick and waxy, while lotus leaves and flowers are thin and papery.
• Water lily leaves have a distinct notch in the leaf, while lotus leaves are more rounded.
• Water lily flower petals are pointed, and lotus petals are more rounded.

The photos attached to this writing are from Clay County, and this plant is common across north Texas. American lotus is adapted to a wide area, from Honduras north through Mexico and across the eastern US and into Canada.

American lotus is a perennial, and it is cold tolerant and heat tolerant. It can grow in any pond or slow moving stream that contains shallow water areas. It prefers water with a depth of about 12 inches. Germination can occur from the large lotus seeds. Tubers, or roots, are established in the mud, and long slender stems extend upward. Leaves and flowers are both emergent in that they grow above the water line.

Lotus flowers are fragrant, and yellowish white with rich gold centers. They open in the morning and close by late afternoon, then open again the next day.

Lotus is an edible plant and has a history as a food source. The large tuberous roots, the size of a human arm, were baked like sweet potatoes. The leaves were eaten like spinach, and the large seeds were ground into flour. Stems taste somewhat like beets and were usually peeled before being eaten.

There is a large world-wide industry of cultivating lilies and lotuses in water gardens. According to Dr. Jerry Parsons, Professor and Extension Horticulturist with Texas A&M AgriLife Extension, cultivation of these plants dates back as early as ancient Egypt. Today, anyone with determination and a little money can have a water garden.

In 2011, the 82nd Texas Legislature designated the water lily “Texas Dawn” as the official Texas State Water Lily. Texas Dawn is a hybrid developed by Texas resident Kenneth Landon, a world-renowned expert in the field of water lilies and the director of the International Water Lily collection in San Angelo.

Ducks and other wildlife utilize the large acorn like seeds of American lotus, and submerged portions of all aquatic plants provide some form of wetland habitat. Many of us have tried to pull a bass out of a group of water lilies or lotuses, and I’m sure others have had better luck than I did. Although there can certainly be benefits to lilies, lotuses, and other aquatic plants, they can also infest ponds to the extent that the pond is not functioning correctly.

So, while the rest of the world works hard to grow these plants, ranchers sometimes need to control populations in their stock ponds. Once it gets a foot hold, American lotus can spread aggressively in wetland areas.

The primary issue that encourages American lotus, and most other water weeds, is shallow water. Look closely at a good livestock pond and you will find that the deeper water is basically free of infestation. Any pond will have a certain amount of shallow water that encourages water weed growth, depending upon the terrain at the pond site and how the pond was constructed. Some ranchers who enjoy and utilize wetland habitat may prefer to have ponds with significant shallow water area.

Almost all livestock ponds have a certain life expectancy. Siltation, or movement of soil into the pond bottom through rainfall runoff, is a natural occurrence. How fast siltation occurs into each pond, and how deep the pond was to start with, determines the length of time that the pond will contain adequate depth for dependable water for livestock.

Ponds that develop infestations of water weeds over a large percent of the surface may not have adequate depth to remain a viable water source for livestock during drought periods, especially in western north Texas where evaporation rates are higher.

Mud, or silt, from the pond bottom, can be removed to deepen the water, but this is a very expensive process. It is often more economical to construct a new pond rather than try to remove the silt from an old one. Most of us do not have the funds to continually construct deep water livestock ponds, so we must try to keep existing structures functioning and providing good drinking water for livestock, for as long as we can. Control of pond weeds like American lotus may be necessary, and it can be accomplished.

There is currently no feasible biological control. American lotus can be cut and removed, but this process us usually temporary because lotus can reestablish from seeds and roots.

American lotus can be safely controlled by chemicals. This must be done carefully. If a pond containing a large amount of any pond weeds is treated to remove all of the vegetation, a fish die-off could occur. When the dying weeds decompose, they use up the oxygen in the water and fish can suffocate. If possible, treat only a portion of the area, wait about two weeks, and treat another portion.

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The Many Benefits of Rabbit Manure

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By Landon Moore

Rabbits offer a lot to the home gardener, and perhaps the most useful of all is their waste. Rabbit manure is likely the single most versatile and valuable fertilizer of any animal manure. It’s a “cold” manure, meaning it can be applied directly to plants in any form without the risk of burning them. In contrast, manure from sheep, horses, cows, and especially poultry must be aged before it’s applied, or it may damage plants. Because rabbit manure doesn’t need to be aged, it retains more of its nutrients and is therefore twice as rich as chicken manure and four times more potent than horse or cow manure. Rabbit manure is safe to apply to soil growing edible crops, has virtually no smell, and contains no harmful seeds. It can be used immediately, or be dried, powdered, made into tea, or turned into worm castings. A single trio of rabbits and their offspring can produce up to two cubic yards of fertilizer per year, along with 100 to 200 pounds of meat.

Rabbit manure is in such high demand as a fertilizer, particularly for roses, that it’s often sold online at a premium price. Some rabbitry owners even charge people to come scoop the manure themselves, paying by the bag. Larger rabbitries might sell by the truckload, but many owners keep it all for their own gardens. You may wonder what makes this little mammal’s excrement so uniquely useful. To understand, we first need to look at the qualities that make it special and then explore its various applications.

To begin with, let’s take a closer look at a rabbit’s biology. Contrary to popular belief, rabbits are not rodents but belong to the order Lagomorpha and family Leporidae, along with hares. All domestic rabbits are domesticated European rabbits (Oryctolagus cuniculus) and are unable to produce fertile offspring with American cottontails. Rabbits are considered “pseudo-ruminants” because they have a single-chambered stomach, but they also have an organ called the cecum, which functions similarly to a rumen and makes up about 40% of their digestive tract. They are crepuscular, meaning they are most active at dawn and dusk, typically feeding in the evening.

Rabbits actually produce two kinds of manure. The familiar dry pellets make up most of their waste, while the other type, known as “cecotropes,” is a moist and smelly substance resembling tiny bunches of grapes. Cecotropes are not fully digested, and because rabbits cannot chew their cud, they reingest the cecotropes as they are excreted. This fermented substance allows the rabbit to absorb more nutrients than it would through initial digestion. While cecotropes are occasionally found in cage trays, the feeding behavior that leads to them is usually only witnessed by the rabbit owner.

The dry pellets are the true manure that most people are familiar with. These small, round, dry pellets have almost no smell when kept dry. When crushed, they break down into a powder resembling tiny grass fragments because, in essence, that’s what they are. Some people crush the pellets before applying them to speed up their absorption into the soil, while others appreciate their “slow-release” feature. Additionally, the manure’s water solubility can be exploited in several ways. Soaking a wheelbarrow full of manure creates a potent sludge that can be easily applied to flat surfaces. If the odor is not an issue, the smell will dissipate once the manure is either dissolved by moisture or dried by the sun. Another method is to make manure tea: fill a cloth bag with manure, seal it, and submerge it in a barrel of water for a few weeks. A simpler method involves placing damp manure at the bottom of a barrel, filling it with water, and letting it sit in the sun for a couple of weeks. Stir occasionally, and you’ll have a powerful liquid fertilizer ready for use.

Domestic rabbits should be fed a modern, pelleted feed, which provides all the nutrients they require. This diet eliminates the risk of noxious seeds being present in the manure, making it safe to apply directly to the lawn, especially during winter. Winter and spring rains will break it down, and by late spring, you’ll have a healthy carpet of turf.

Rabbit manure’s nutrient content varies depending on factors like storage, age, and diet, but it generally contains around 2% nitrogen (N), 1.3% phosphorus (P), and 1.2% potassium (K). The Oregon Extension Service gives a range of 3-4.8% nitrogen, 1.5-2.8% phosphorus, and 1-1.3% potassium. Even at the lower end of the scale, rabbit manure has higher nitrogen content than poultry manure and twice the nitrogen content of cattle manure. One reason rabbit manure doesn’t burn plants is due to the biology of birds, which lack bladders and produce more ammonia in their waste. In contrast, rabbits release ammonia in their urine, which is why their manure may have a stronger odor.

Because of its balanced nitrogen-to-phosphorus ratio, rabbit manure promotes a wider variety of species in the same application area. Applying it directly to heavy clay soils will improve them quickly, especially when combined with other organic matter. It can also improve sandy soils by adding texture and helping them retain moisture. Anyone raising rabbits will have a steady supply of manure, as they are efficient producers. A small herd of 17 animals, including their litters, can produce about one ton of manure annually.

Beyond fertilizing, rabbit manure has several other uses. It is considered the best food for earthworms and can be combined with moisture-holding bedding like peat moss, shredded paper, or hay taken from used nestboxes. Many rabbitries (including my own) keep worm beds right under the cages. The resulting castings are rich in nutrients and can be used as-is or incorporated into soil amendments. A couple of feet of manure under a foot of soil in a hotbox can generate enough warmth to start and grow seeds, even in cold climates like Vermont.

In Europe and Asia, the rabbit meat industry is a billion-dollar market. While the Czech Republic leads in per capita consumption (over 8 pounds per person annually), China is the leading producer of rabbit meat. A recent study in China examined the effects of replacing peat moss in seed-starting soil with rabbit manure. The study found no significant difference in germination rates and noted that the manure provided increased nutrients for seedlings. The ideal ratios for seed-starting soil were found to be one-third manure, one-third perlite, and one-third vermiculite, or half manure and half perlite.

Rabbit manure is often overlooked as a nuisance, but as we can see, it’s an incredibly versatile soil conditioner, excellent fertilizer, ideal food for earthworms, and a superior seed-starting medium. Anyone raising rabbits should consider this another benefit, in addition to having a home meat supply, exhibition livestock, or pets.

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