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[AgriLife Extension] Texas crop and weather report for June 29, 2016

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By: Adam Russell

Conditions have gone from one extreme to the other for producers around the state

COLLEGE STATION – Many row crop producers around the state faced tough planting conditions, from cool ground temperatures to too much rain, that delayed or damaged initial plantings this spring. Now dryland crops are facing another challenge – heat and rapidly decreasing moisture levels.

Dr. Gaylon Morgan, Texas A&M AgriLife Extension Service state cotton specialist in College Station, said cotton planting in his region was delayed by heavy rains, which prevented farmers from accessing fields. Soils were still saturated when cotton was planted, and some bottomlands were drowned out or washed away.

Morgan said farmers replanted some acreage in May before the final planting window for cotton closed for the Brazos and Blackland areas. Replants fared from fair to good, but too much rain during early plant development could be detrimental to plants, especially if arid conditions persist.

Heavily saturated soils in the spring depleted oxygen levels, which inhibited strong root development, Morgan said. A high moisture index can also trick plants into maintaining a shallow root system at that stage of development because plants expect conditions to remain the same.

“Our earlier planted cotton is flowering, and these plants are past the point where they dedicate much energy toward new root development. They’re putting all their energy toward making flowers and bolls,” Morgan said. “So you’ve got shallow root systems that didn’t have a prolific growth period and now you have hot days that can dry out the first few inches of soil quickly.”

Morgan said producers with irrigation have been watering. But less than 10 percent of the Blackland’s cotton crop is irrigated.

Despite concerns for some producers and many acres being left unplanted or replanted due to excessive April and May rains, overall row crops in southern portions of the state are much better off than last year, he said.

“Last year about 500,000 acres of cotton weren’t planted in South and East Texas because it was too wet,” he said. “But overall the transition from very wet to very dry is the concern now. The cotton crop here has a lot of potential, it just needs rain.”

Dr. Calvin Trostle, AgriLife Extension agronomist in Lubbock, said a small portion of crops in the Panhandle will require replanting due to failure from weather damages or poor conditions. Grain sorghum is often a common replant crop, but the window for planting is closing the further north in the High Plains one goes.

Trostle said mild spring temperatures delayed cotton plantings in parts of the region and many producers were still considering alternative crops after the window to plant closed on most seed crops due to maturity concerns. Short-season cotton varieties could be an option for replanting or late planting, but cotton colleagues note the region is well past any comfortable replanting with cotton.

Hail, wind and blowing sand damage on West Texas cotton are frequently heavy in May and June, up to 400,000 acres in some years, or about 10 percent of the total crop, Trostle said. AgriLife Extension cotton staff note that damaged cotton must be evaluated for health and stand before being terminated.

“It’s nothing out of the ordinary,” Trostle said. “It’s on a case-by-case basis here. There was some hail damage, and conditions may have prevented fields from emerging, but I think flooding was blown out of proportion. We did have a gulley washer, but it was mostly concentrated in the metro-Lubbock area, which got a lot of media attention but I don’t think it affected rural, agricultural land that much.”

Trostle said sunflowers may be a replant consideration for some producers. Sunflowers can be planted through early to mid-July.

AgriLife Extension district reporters compiled the following summaries:

CENTRAL: The district began to dry up and allowed producers to get into fields. Producers baled hay, and fields were in excellent conditions for this time of year. Cotton recovered well with the warm weather and sunshine. Livestock and cattle were in good condition. Tanks, rivers and creeks were full. Insect pressure was still low. All counties reported good soil moisture and 95 percent of ranges and pastures as in good condition. Overall crop conditions were 90 percent good.

ROLLING PLAINS: No moisture was received. Most wheat was harvested, and the remainder should be harvested soon if weather continues to cooperate. Wheat yields and quality appear to be all over the board this harvest season. Temperatures continued to rise to the upper 90s with no cooler temperatures in the forecast. Forages continued to thrive following the good early moisture. Cotton planting neared completion. Sorghum producers monitored crops for sugarcane aphids. Livestock were in good condition. Stock tanks and area reservoirs were full.

COASTAL BEND: Hot, humid and dry conditions prevailed with some scattered showers reported. The rains held up field work in some areas. Crops have suffered from excessive water in fields where there was poor drainage. Corn was drying down and should be ready to harvest soon. Yield loss appeared to be minimal despite corn leaf diseases in many fields. Cotton was in full bloom in most areas. Growth regulators were being applied, but some producers continued to fight issues ranging from nutrient deficiencies to too much growth. Grain sorghum harvest was underway and doing well with good yields being observed. There were reports of increased sugarcane aphid numbers in some grain sorghum fields, and harvest equipment was being monitored for aphid residue build-up. Hay production was in full swing, although many producers were making their first hay cutting almost a month behind schedule. Range conditions were good, and cattle continued to do well as good soil moisture provided adequate forage.

EAST: Conditions around the region were mostly hot and dry. Hay production was going at a rapid pace as producers tried to catch up. Many producers were still completing their first cutting on some fields. Weather conditions were good for warm season forage growth. Rains had mostly stopped, which allowed the soil to dry, grass to grow and crops to breathe. Pasture and range conditions were good to excellent. Weeds were a problem due to earlier moisture. Insect and disease issues were being reported on various crops, plants and lawns. In some counties, producers had to water gardens. Subsoil and topsoil moisture conditions were mostly adequate with Harrison and Smith counties reporting surplus. Angelina County reported soil moisture as short. Gardens were producing very well. Corn, peas and tomatoes were excellent. A few counties received light precipitation from scattered afternoon storms. Cattle were in good to excellent condition with a good crop of calves, but the cattle market was down. Producers continued to sell market-ready calves and cull cows. Fly counts were getting high. Feral hog and gopher control continued.

SOUTH PLAINS: The district experienced hot, dry conditions, and producers irrigated heavily. A few scattered showers fell in some areas, but subsoil and topsoil moisture levels continued to drop around the district. Scurry County reported between 1-4 inches of rain. Some cotton was yet to be planted while other fields displayed six true leaves, which is a normal range at this point in the season. Conditions were conducive for good emergence and subsequent healthy growth despite late plantings in some areas. Attention to weeds, nematodes, plant growth regulators and fertility were becoming priorities for producers. Peanuts that avoided blowing sand were doing well but were not blooming yet. Producers were checking for nodulation. Grain sorghum and corn were doing well. A few corn fields were nearing the tassel phase. Field operations included postemergent herbicide applications and cultivation. Fields were drying out after the high temperatures. Pastures, rangeland and winter wheat needed rain. Cattle were in good condition. Producers were in need of some moisture to cool things down and improve all crops and pasture conditions. Wheat harvests were active with yields ranging from 17-30 bushels per acre on dryland and 40-65 bushels per acre on irrigated fields. Local elevators were full and moving grain out as fast as possible to make room for incoming grain.

PANHANDLE: Temperatures were near normal for most of the region. Some moisture was received. Amounts ranged from a trace to 1.5 inches, but more rain was still needed to improve soil moisture. Weather conditions were detrimental to cotton seedling progress, as there was not enough moisture in dryland fields to assist cotton emergence. Wheat harvest was near completion. Yields were mostly above average, ranging from 20-60 bushels per acre on dryland to up to 100 bushels per acre on irrigated fields. Irrigated corn progressed well. Corn crops were off to a slow start but generally doing well. Irrigated corn progressed well. Cattle were in good condition. Spring breeding season was winding down. Stocker cattle were still coming into summer pastures. Grasshopper numbers increased in rangeland. Grasses were still mostly green but more rain was needed. There were no reports of insect problems yet. Grain sorghum was off to a great start, but the total acreage of grain sorghum was down considerably. Hay and silage crops were planted with a few late plantings of forage sorghum remaining. Sunflowers were expected to be planted through early July.

NORTH: Topsoil moisture ranged from adequate to short. Farmers were able to harvest most oat and wheat fields. Yields were 50-80 bushels per acre for wheat and 70-90 bushels per acre for oats. Corn crops looked good but needed rain as plants were in the dough stage. Milo looked good so far but could use rain. Soybeans still looked good and should start flowering soon. Hay production was in full swing.  Producers were harvesting around 2.5-3.5 bales per acre. Cattle had ample grass so far. Stocker operators continued to ship cattle each week as the forage declined. Many producers held on to yearling calves longer this year because of good grass availability and a tough market. Hot days were affecting cattle, which were staying in the shade during the middle daytime hours and grazing in the early morning and late afternoon.

FAR WEST: Temperatures were hot, ranging from the mid-90s into triple digits with a high of 108 degrees reported along the Rio Grande River. Producers continued to look for ways to control weeds by any means possible. Weeds have taken over some crops due to the wet conditions, and producers were fighting back by cultivating, spraying, rotary hoeing and hiring field hoe hands. Corn and sorghum looked great. Scattered rains in some areas provided a slight break from hot temperatures and ranged from a trace to 4 inches. Some crops were somewhat behind schedule due to weather-related issues in the spring. Pasture and range conditions improved from the recent rains. Producers in Brewster and Jeff Davis counties were having problems with water levels in wells. Livestock were in good condition.

WEST CENTRAL: Conditions were hot and humid. Temperatures were in the upper 90s. Fire dangers continued to increase as pastures continued to dry out. Small grain harvest was winding down. Cotton planting neared completion. Planting was behind due to wet conditions. Fields were off to a good start with good subsoil moisture and hot days. Wheat harvest continued with fair yields being reported. Some wheat and oats were damaged by excessive rains, but preharvest sprout was not as bad as anticipated. Corn and sorghum crops were in excellent shape. Cutting and baling hay was underway. Good yields were reported from first hay cutting, which was mostly complete. Producers continued to battle weeds. Range and pastures were in excellent conditions. Livestock were doing well on green pastures. Livestock remained in fair to good condition. Sheep and goat producers continued battling stomach worms. Flies and mosquitoes were a major nuisance.

SOUTHEAST: Hot conditions persisted. The sun helped to dry conditions; however, in certain areas there was still an adequate amount of soil moisture. Livestock in Fort Bend County were in good condition. Cotton responded well to recent heat and sun but will need additional growth regulators for management. Sorghum and corn were in good condition. Small grains were harvested in Brazos County. In Montgomery County, some hay was cut and baled. There were still many fields too wet to enter. Damage to pastures and fences was still being assessed. Jefferson County producers were able to work in the fields. Soil-moisture levels throughout the region ranged widely from adequate to surplus, with most ratings in the adequate range. Rangeland and pasture ratings varied widely too, from excellent to good, with good ratings being the most common.

SOUTHWEST: Warm, dry conditions allowed ranchers to bale hay. Temperatures were in the high 90s. Dry weather reduced the topsoil moisture, but spotty showers across the district helped alleviate drying conditions in some areas. Peach season was in swing, and vegetables were being harvested. Crops continued to look good. Livestock were in good condition due to forage availability.

SOUTH: Hot and humid conditions continued throughout the district. Triple-digit temperatures were reported in some areas. Some light to moderate showers were reported in some areas but not enough to benefit soil moisture indexes, ranges and pastures where rainfall was reported. Dry conditions prompted producers to irrigate cotton, sorghum and some corn fields. Grain sorghum varied in stages from earlier-planted fields being ready for harvest to late-planted fields just turning color, but most fields looked good. Cotton crops were very good to excellent. Most cotton fields were setting bolls well and showed tremendous potential for good production. Grain harvest should be in full swing soon. Peanut planting continued and was expected to be completed soon. Corn and potato harvesting continued in portions of the district. Many producers continued plowing up wheat stubble. Pasture and range conditions were good to very good, but hot temperatures sapped soil moisture. Subsequently pasture conditions in many areas have begun to go into a dormant-like condition. Conditions were good for baling hay. Body condition scores on cattle continued to be good. Soil moisture conditions varied from 100 percent adequate to 80 percent short within the district. Higher numbers of cattle were marketed as summer conditions began to take a toll on forage quality.

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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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