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Farm & Ranch

Texas crop, weather report for July 7, 2015

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By: Robert Burns

One benefit of all the rains were fewer grasshoppers overall

A grasshopper seems to be waiting patiently for a train to pass near Kerens in Central Texas. Grasshopper populations are generally much lower in most of the state this year, most likely because of the excessive late winter and spring rains, said Dr. Allen Knutson, a Texas A&M AgriLife Extension Service entomologist, Dallas. (Texas A&M AgriLife Extension Service photo by Robert Burns)

Writer: Robert Burns, 903-834-6191, rd-burns@tamu.edu

COLLEGE STATION – Though there have been reports of high grasshopper populations in some areas, generally the pest’s numbers statewide are much lower this year.

“Our expectations this year were that grasshopper numbers would be lower because during heavy rains and higher humidity, grasshoppers are more likely to die from fungal diseases, “said Dr. Allen Knutson, Texas A&M AgriLife Extension Service entomologist, Dallas. “We’re getting a few reports of grasshoppers, but overall the numbers are much less than in previous years.”

In the Central Texas Blacklands, only Ralph Davis, AgriLife Extension agent for Kaufman County, mentioned seeing large numbers of grasshoppers.

Download or preview a two-minute MP3 audio version of this report

However, in the Panhandle, Mike Bragg, AgriLife Extension agent for Dallam County, said that as rangelands dried out, grasshoppers were moving into cropland, requiring some producers to spray pesticides.

In East Texas, Armon Hewitt, AgriLife Extension agent for Trinity County,
noted increasing grasshopper numbers, but his was the only county where troublesome numbers were reported. In the West Central District, Heath Lusty, AgriLife Extension agent for Lampasas County, noted that “lots of small grasshoppers were beginning to show up.”

Generally, however, the incidents of grasshoppers were low as was expected, Knutson said. This doesn’t mean producers shouldn’t be on the watch for the pest. It’s still possible for populations to explode in isolated areas.

Knutson also said that though incidences of the sugarcane aphid have been lower than expected this year, the pest is now showing up in Blacklands fields.

“We’re seeing some of the first sorghum fields in the northern Blacklands being treated for sugarcane aphids,” he said. “Also, forage sorghums should be monitored closely too for this pest, because it can be very damaging to crops like Sudan grass and haygrazer.”

Though the sugarcane aphid numbers haven’t increased until recently, now that hotter, drier summer days are here, populations can get out of control very rapidly, Knutson said.

AgriLife Extension district reporters compiled the following summaries:

The 12 Texas A&M AgriLife Extension Districts

Central: Rangeland, pastures, livestock and most crops were all rated as being in good condition. Drier conditions during the past week were favorable for crops. Grain sorghum in particular looked very good. Corn maturity was highly variable. The wheat harvest was completed with some low test weights and some sprout dockages. Stock-water tanks were full, and lake levels were up. Sugarcane aphids were found in many forage sorghum fields. As most producers will start harvesting sorghum silage very soon, some fields will have to be sprayed. Bermuda grass stem maggots were also found. Hay harvesting was proceeding well, with yields ranging from four to six round bales to the acre. Though oats in some fields were laid down by earlier high winds and heavy rains, the harvest was considered good. Irrigation of crops will start soon.

Coastal Bend: Some areas had a few short showers, but hotter, drier weather generally prevailed, which made good growing conditions for most field crops and forages. The hot, dry weather also allowed fieldwork and hay harvesting. Corn was maturing and drying quickly. Hay harvest continued with very good yields. Most grain sorghum neared being ready to harvest, although combining will be difficult in fields where the wind from Tropical Storm Bill caused lodging. Cattle were in excellent condition, and pasture grasses were knee high. Cotton and soybeans were progressing well, though some fields needed more moisture to reach full yield potential.

East: Weather around the region became more normal for this time of year. Producers were baling hay as fast as they could. Some pastures were still not traversable with heavy equipment due to water in low-lying areas. In Anderson County, some areas along the Trinity River were still under as much as 5 feet of water. Most counties had adequate subsoil and topsoil moisture. Brief afternoon showers caused problems for hay production. Most hay fields were producing more hay per acre than normal – as much as three bales per acre — but the quality was down due to the delayed harvest and producers not being able to make applications of herbicides and fertilizer in a timely fashion due to the rain. Livestock were in good condition. Horn fly populations were still stressing livestock. Cattle were loaded with flies. Vegetable growers were harvesting peas, corn and tomatoes to sell at local farmers markets. Mayhaw, blackberry a nd blueberry growers had another great season. Peach yields were light due to pressure from continued rain and the resulting plant diseases. Most counties had a good watermelon crop, except Panola County, where heavy rains fell at the wrong time, knocking many of the blossoms from the vines. Pecan scab was present in orchards and landscapes. Mosquitoes and houseflies were still a major threat and nuisance. Feral hogs and grasshoppers were active.

Far West: All counties reported rainfall from 0.7 inch to 2 inches, which kept pastures and crops green. Temperatures continued to be mild for this time of year. Livestock continued to do well. Replanted cotton looked good but was behind normal growth.

North: Topsoil moisture was mostly adequate. Weather was generally mild, with some areas receiving from 0.3 to 1 inch of rain. Corn looked a little better than it had earlier, though uniformity of stands was still an issue due to some fields having standing water throughout emergence. Summer pastures were doing well with grass growing at a great rate. Soybeans and grain sorghum looked good. Late-planted cotton emerged. Producers were harvesting hay where fields had dried out. Livestock were in excellent condition, and calves were doing well. Wild hogs continued to damage pastures and crops. Grasshopper populations were expanding in some areas.

Panhandle: The region was hot and dry for most of the week, with rain on the weekend. Some areas of Dallam and Hartley counties received from 0.1 to 0.45 inch, with 0.2 inch common. Hansford County got 0.75 to 1 inch. The progress of the wheat harvest varied, from being well along to just starting. In Deaf Smith County, wheat yields were about average. In Randall County, about 60 percent of wheat was harvested, with yields ranging from 30 to 60 bushels per acre. The Hansford County wheat harvest was nearly completed, with irrigated fields making from 45 to 60 bushels per acre. Some wheat fields had been taken over by weeds and were being plowed under instead of farmers spending money to spray the field. Irrigation of corn was active, and some producers were cultivating and side dressing the crop with anhydrous ammonia. Corn was behind in maturity in some areas. In Hansford County, early planted corn tasseled, but the late-pl anted corn was far behind in development. Grain sorghum varied in maturity as well. Deaf Smith County grain sorghum was doing well, with earlier plantings at the six-to-eight leaf stage. Late plantings ranged from just emerging to the three-leaf stage. Ochiltree County sorghum planting was just completed. Most Randall County sorghum was rated as being in excellent condition. High temperatures increased livestock’s water needs, and with no wind to turn windmills, some producers started hauling water.
Cattle were in good condition across the region, though some pastures were beginning to turn brown. Grasshoppers were moving out of drier rangeland into cropland causing some producers to make broader insecticide applications.

Rolling Plains: Conditions returned to normal in the region, with little to no rainfall over the past few weeks. The dry conditions allowed producers to finish planting cotton. Planted cotton was in good to excellent condition, with only a few acres being in poor shape due to excessive rainfall during planting. Soil moisture remained favorable, though later-planted cotton had a harder time getting started due to the lack of rainfall during the past several weeks. There was only low to moderate pressure from fleahoppers and thrips. Pastures and livestock were in good to excellent condition. Earlier rains gave rangeland the boost needed to meet grazing demand. Some ranchers were beginning to restock herds but were mindful that if rains stop, they don’t want to be overstocked. High cattle prices were also making producers cautious on restocking. Hay yields were excellent, and the peach crop outstanding.

South: Scattered showers continued throughout the South Region. Some areas received light showers and some received pretty heavy downpours — resulting in good rainfall amounts to add moisture to already adequate soil moisture conditions. In the northern part of the region, peanuts were developing nicely and flowering, and some producers were spraying the crop with fungicides. Corn and grain sorghum were maturing, and cotton was setting bolls. Rangeland and pastures remained in good condition, and cattle body-condition scores were excellent. Soil moisture was mostly adequate in the northern counties. In the eastern part of the region, rains kept temperatures under 100 degrees. Jim Wells County received from 0.5 inch to 2 inches, which kept fieldwork minimal. Kleberg and Kenedy counties did not receive any rain, but cotton and small grain crops were said to be the best in the past decade. Ranges and pastures were excel lent. Soil moisture was mostly adequate, with Kleberg and Kenedy counties having 80 to 100 percent surplus conditions. In the western part of the region, some areas received nearly 2 inches of rain. Coastal Bermuda grass producers had plenty of round and square bales laid out in fields throughout the area. Hay was for sale at dramatically reduced prices. The scattered showers delayed some field activities, but corn, sorghum and cotton were progressing well, and watermelon harvesting preparations continued. There was some insect pressure on cotton, but it was below the economic threshold for any pesticide applications. Pecans continued to make good progress. Soil moisture remained adequate in most of the western counties. In the southern part of the region, showers in Cameron County halted the harvesting of corn and grain sorghum. In Hidalgo County, rain held up the harvesting of sunflowers, sorghum and sugarcane. Harvesting of row crops and hay continued in Starr County despite ligh t showers. Willacy County received about 1 inch to 3 inches of rain, which stopped the grain sorghum harvest for about two days. Corn throughout the area looked good. Soil moisture was mostly adequate in the southern counties, with Willacy County having 50 percent surplus topsoil moisture.

South Plains: Crops in most of the region were off to a good start due to all the early season rains but needed more moisture soon to keep progressing. The Bailey County wheat harvest was ongoing with excellent yields. Cochran County cotton progress ranged from five to 12 true leaves. Even with the dry conditions, Cochran County corn and grain sorghum were making excellent progress. Peanuts were also doing very well. Lubbock County growers began irrigating grain crops as soils dried out. Many Lubbock County cotton fields were squaring, and grain sorghum ranged from just planted to the early boot stage. Early planted cornfields were tasseling, and sugarcane aphids were detected. In Garza County, cotton was progressing well in most areas despite high weed pressure. No insect pressure was reported. Rangeland and pastures were in excellent condition. Mitchell County cotton was growing fast and showed signs of squaring in early pl anted acres. Weeds were a problem in cotton fields there too. Shortly after a sand fighter cultivator was run over a field, new weeds emerged. Scurry County cotton was a little behind but was expected to catch up soon.

Southeast: Soil moisture varied widely but was mostly adequate to surplus, with Hardin, San Jacinto and Chambers counties having 100 percent surplus levels. Rangeland and pastures in those counties were mostly good to excellent, with good ratings the most common. Walker County producers were harvesting hay. In Montgomery County, warm temperatures and rain promoted grass growth, but wet conditions made it difficult to put up much hay. Chambers County producers were able to make some herbicide applications to hayfields, but very little was cut due to weather conditions. Fort Bend County producers were also able to cut and harvest hay despite scattered showers bringing from 0.5 inch to 1.7 inches of rain. The county, like much of the region, needed a few weeks of dry weather to enable sorghum growers to begin harvesting. Brazos County also had scattered showers across the entire county. Warm-season grasses were growing rapidly, an d grasshopper populations were increasing in some areas. Waller County corn was in poor condition due to too much water. Pastures continued to improve, and rangeland was in good condition. For the first time in weeks, Brazoria County did not have heavy showers during the reporting period. In Chambers County, rice acreage was about half what it was in 2014. Some organic rice was planted right up until the last week of June.

Southwest: Drier weather improved conditions throughout the counties, and soil moisture became more manageable. With good growing conditions and earlier rains, Gillespie County peach growers were expecting a record-setting year. Some areas had problems with grasshopper infestations. Livestock and wildlife were in excellent condition with good forages and grazing on rangeland.

West Central: Days were hot and windy with warm nights. There were a few scattered showers, but the wildfire potential increased as tall grass in fields dried out. The wheat harvest was completed in most areas, with fair yields reported. Row crops continued to make good progress with plenty of moisture and good growing conditions. Summer forage crops were being harvested for hay with very good yields. Grain sorghum fields looked good. Cotton planting was mostly finished in all areas, and most of the planted crop had emerged. Producers were spraying cotton fields for weed control and scouting sorghum fields for sugarcane aphids. Some had to spray to control the pest. Hay producers continued cutting and baling, with good yields and high quality. Some hay fields neared being ready for a second cutting. Rangeland and pastures further improved due to recent rains. Livestock remained in good condition. Flies continued to be an is sue, and small grasshoppers made their appearance. Pecan trees were doing well.

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Farm & Ranch

Frog Fruit

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By Tony Dean, tonydean.tx1@gmail.com

Frog fruit is a native, low-growing perennial forb adapted to most of the eastern U.S., but few grazers know it well. It contributes more to our plant communities than we realize. It generally grows no more than a few inches tall and roots at the nodes. It can form dense mats several feet across and develop runners up to 3 feet long.

The leaves are thick, one to two inches long and 3/8 inch wide, and toothed from the middle to the tip. Tiny white flowers form a ring around a flower head, and the head then elongates into a cylinder an inch long or longer. Frog fruit has a four-angled stem.

Frog fruit can grow almost anywhere in Texas and on many soil types. It can grow in drier soils and likes good drainage, but it needs additional moisture to survive the hottest months. You can find it almost anywhere in a pasture, though it often grows in depressions and near water sources.

“Frog fruit is used as forage by livestock and deer. I recall an instance when I was moving cattle from one pasture to the next on a Jack County ranch. As I opened the gate, I stood by a beautiful green plant of switchgrass which I expected to be immediately grazed down. The cattle walked right by the switchgrass and stuck their heads in a small patch of frog fruit a few feet away,” Dean said.

Frog fruit is gaining popularity as a ground cover for homes and gardens for these reasons:

  1. Frog fruit grows quickly, maybe too quickly. If it gets out of bounds, you can always trim it back.
  2. Frog fruit is low maintenance. Once you get it established with adequate watering, it can survive with little care.
  3. Frog fruit has a long bloom period, from April to October.
  4. It is a host plant for several butterfly species and other insects.
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Farm & Ranch

Theileria orientalis

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By Barry Whitworth, DVM

Over the past few years, veterinarians have detected Theileria orientalis in Oklahoma cattle. Early cases were primarily diagnosed in adult cattle, but more recent Oklahoma cases have been identified in stocker cattle. All cattle producers should be familiar with the clinical signs of this disease and check their cattle daily for signs of trouble.

The first U.S. case of theileriosis was identified in Virginia in August 2017. Those cattle showed weakness and anemia, and veterinarians made an initial diagnosis of anaplasmosis. Blood samples from the animals were tested for Anaplasma, Babesia and Leptospira. Results were negative for all three, but the tests revealed a blood protozoan, later identified as T. orientalis genotype Ikeda. Since that first herd outbreak, the organism has been detected in several states.

Cattle sick with T. orientalis genotype Ikeda may show fever, weakness, anorexia and exercise intolerance. If forced to move, affected cattle may stagger and gasp for air. If stressed excessively, they may collapse and die. On examination, the gums, eyes or vaginal mucosa may appear pale (white) or yellow. Reproductive losses, including stillbirths and late-term abortions, may occur, along with a drop in milk production.

Clinical signs reported in adult cattle in Oklahoma include anemia, sudden death, weight loss, abortion, failure to thrive and failure to calve. In stocker cattle, producers have reported weight loss, anemia, poor performance and sudden death.

Because Anaplasma marginale and T. orientalis genotype Ikeda produce similar clinical signs, telling the two apart can be difficult. One difference is that clinical signs are more common in young cattle infected with T. orientalis than in young cattle infected with A. marginale. Cattle with anaplasmosis also often display aggression, while those with T. orientalis genotype Ikeda typically do not. A laboratory test is required to tell the two diseases apart with certainty.

Researchers have identified Haemaphysalis longicornis as a possible vector of T. orientalis genotype Ikeda. In 2017, the U.S. Department of Agriculture’s (USDA) National Veterinary Services Laboratories (NVSL) confirmed the presence of H. longicornis, commonly called the Asian longhorned tick (ALT) or bush tick. While trying to determine how the tick arrived in the United States, USDA officials discovered it had been present in West Virginia as early as 2010. The tick has now been confirmed in at least 26 states, including Oklahoma. Some evidence suggests other insect vectors may also transmit T. orientalis genotype Ikeda. Needle transfer is another possible route of transmission.

The ALT has been identified in Craig and Mayes counties in Oklahoma. This tick thrives in areas with high humidity, such as wooded regions, brush or tall grass. Ticks are often found where large numbers of wildlife gather, such as along deer trails. Producers can find more information about the ALT on the USDA website at https://www.aphis.usda.gov/livestock-poultry-disease/cattle/ticks/asian-longhorned.

Other countries have developed treatments for T. orientalis, but no approved treatments are available in the United States, and no vaccine exists for this disease. The best defense is prevention: buying cattle free of the organism, avoiding blood transfer between animals and using effective tick control. Producers should purchase cattle from reputable sources. Clean instruments between animals during procedures such as castration or dehorning, and change needles between every animal. Control external parasites with appropriate insecticide treatments. Pasture management also helps, such as rotating cattle away from wooded or brushy areas where ticks thrive. Patch burning may also help reduce tick populations.

Theileria orientalis remains a concern for some cow/calf and stocker producers in Oklahoma. Producers who want more information about T. orientalis genotype Ikeda should contact their local veterinarian or Oklahoma State University County Extension agriculture educator.

References

Hammer, J. F., Emery, D., Bogema, D. R., & Jenkins, C. (2015). Detection of Theileria orientalis genotypes in Haemaphysalis longicornis ticks from southern Australia. Parasites & Vectors, 8, 229.

Oakes, V. J., Yabsley, M. J., Schwartz, D., LeRoith, T., Bissett, C., Broaddus, C., Schlater, J. L., Todd, S. M., Boes, K. M., Brookhart, M., & Lahmers, K. K. (2019). Theileria orientalis Ikeda genotype in cattle, Virginia, USA. Emerging Infectious Diseases, 25(9), 1653-1659.

Spickler, Anna Rovid. (2019). Theileriosis. Retrieved from http://www.cfsph.iastate.edu/DiseaseInfo/factsheets.php.

Watts, J. G., Playford, M. C., & Hickey, K. L. (2016). Theileria orientalis: A review. New Zealand Veterinary Journal, 64(1), 3-9.

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Farm & Ranch

Is the Pond Safe for Livestock?

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By OKFR Staff

During the hottest part of summer, a farm pond can look like a welcome source of water. Cattle may be standing belly-deep along the bank, and the pond may still hold enough water to seem dependable. Looks alone won’t tell you whether that water is safe.

Hot weather, limited rainfall and falling pond levels can create water-quality problems. As water evaporates, salts, minerals, nutrients and other substances become more concentrated. Warm, still water can also encourage blue-green algae, and some forms can produce toxins capable of killing livestock.

Producers sometimes treat water as an afterthought compared to grass, hay and supplemental feed. Livestock need a dependable supply of clean water to maintain feed intake, regulate body temperature and support production. Poor-quality water can reduce consumption and performance even when it does not cause obvious poisoning.

A pond that has watered cattle for years is not safe under every set of conditions. Pay particular attention during drought, extreme heat or any period when the water level drops significantly.

Watch the Water and the Livestock

One of the most serious late-summer concerns is a bloom of cyanobacteria, commonly called blue-green algae. These organisms live naturally in many bodies of water, and most do not produce dangerous toxins. The risk rises when certain toxin-producing species multiply rapidly under favorable conditions.

According to Oklahoma State University Extension, toxic blue-green algal blooms typically develop in standing water after periods of hot, dry, calm weather. Nutrients such as nitrogen and phosphorus can fuel excessive growth. Those nutrients may reach a pond through manure, fertilizer runoff, soil erosion and decaying vegetation.

A suspicious bloom may turn the water bright green, blue-green, pea-soup green or even brownish. Scum, foam or mats may collect along the shoreline, particularly where the wind pushes floating material into one area. Some blooms look like spilled paint.

Not every green pond is poisonous. Common aquatic plants and harmless algae can also change the color or surface of the water. You usually cannot tell whether a bloom is toxic by looking at it, and a pond can contain toxin-producing cyanobacteria without showing every commonly described warning sign.

Keep livestock, horses, pets and people away from water that has an unusual color, heavy surface scum, a bad odor or unexplained dead fish or wildlife nearby. Do not let livestock drink from another part of the same pond on the assumption that the water is safe there. Wind can move a bloom, and toxin levels may vary across the pond.

Blue-green algae can produce toxins that affect the nervous system or liver. Depending on the toxin and the amount consumed, affected animals may develop weakness, staggering, difficulty breathing, tremors, convulsions, diarrhea or collapse. In severe cases, owners find animals dead near the water before realizing anything is wrong. Treatment often fails, which makes prevention especially important.

Treat any suspected poisoning as an emergency. Move the herd away from the water source without driving or stressing animals that may already be affected. Provide another clean water supply and contact a veterinarian immediately. Your county Extension office can also help you determine where and how to submit a water sample.

Blue-green algae is not the only potential problem. Pond water may contain elevated levels of dissolved salts, sulfates, nitrates, bacteria or other contaminants. Runoff can carry manure, fertilizer, pesticides and organic matter into the pond. Low water levels make some of these problems worse because the remaining water grows more concentrated.

Water with excessive dissolved solids may taste bitter or salty, so animals drink less of it. Depending on the substances involved and their concentrations, poor-quality water may contribute to diarrhea, reduced feed intake, poor weight gain or other health concerns. Young animals and livestock that are not used to the water may be more vulnerable.

Watch the cattle themselves, too. Are they reluctant to drink? Are they crowding around a different water source? Has feed intake or weight gain dropped without an obvious explanation? Are several animals having digestive problems? Changes across multiple animals can be an early clue that you need to look at the feed or water.

OSU Extension recommends collecting a representative sample and submitting it for a livestock water test whenever you suspect a water supply is harming animal health or performance. A standard livestock water test covers several characteristics, but blue-green algae can require different sampling and testing procedures. Contact the laboratory or county Extension office before collecting the sample so you take it from the right location, use the proper container and handle it correctly.

Reduce Problems Before They Develop

Good pond management cannot eliminate every water-quality problem, but it can lower the risk. One of the most effective steps is limiting the manure, soil and nutrients that enter the water.

Cattle with unrestricted access to an entire pond can damage the banks, muddy the water and deposit large amounts of manure in or near it. Hoof traffic strips vegetation and speeds erosion. Sediment fills the pond over time, while manure supplies nutrients that can encourage excessive algae growth.

Where practical, fence livestock away from most of the pond and provide a limited-access watering point. Another option is piping water to a trough below the dam or elsewhere in the pasture. OSU notes that reducing cattle manure in the pond can reduce the conditions that favor toxic algae and make the water more palatable.

A vegetated buffer around the pond can slow runoff and trap soil and nutrients before they reach the water. Apply fertilizer and manure carefully in the watershed, particularly before heavy rain, and do not let large amounts of hay, feed or organic debris pile up at the water’s edge.

Alternative watering systems need maintenance, too. Check troughs for algae, manure, drowned animals and other contamination. Install wildlife escape ramps in tanks so birds and small animals can climb out instead of drowning and fouling the water.

Be cautious about treating a pond on your own. Some owners use copper sulfate and other algaecides for algae control, but improper treatment can create new problems. Killing a large amount of algae or aquatic vegetation at once can deplete dissolved oxygen as the material decomposes, which can lead to a fish kill. Treatment may also release toxins from affected cyanobacteria into the water. Base any chemical application on proper identification and professional recommendations, not guesswork.

Livestock should always have enough water for the weather, their size and their stage of production. Demand rises sharply in hot weather, and a pond that barely meets the herd’s needs in spring may fall short in August. Check the source regularly instead of waiting for cattle to gather around a muddy shoreline.

Ponds can fool you. Crystal-clear water isn’t always safe, and a green pond doesn’t always mean toxic algae. Regular observation, testing and prevention are the best ways to keep a pond safe for your herd.

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