Tillage & Conservation
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Even where yields were good, the residue should be left standing and attached so that it doesn’t “drift” into piles, creating problems with planting next year.
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Producers should consider no-till directly into the standing residue to continue the erosion control until crop canopy can take over. Any residue left standing is less residue that has to be cut or handled on subsequent field operations. The worst thing a producer can do is to cut the residue loose which allows it to move and create a mat of residue on the soil surface.
Tillage costs include far more than just labor, equipment and fuel, the latter of which may become even more of an issue if diesel prices continue to rise. Other costs may be less immediately visible, but will still have an impact on your operation.
Too often the soil will dry to the depth of tillage. An average silt loam soil can hold about 2 inches of soil moisture per foot of soil. Disking 6 inches deep or chiseling 12 inches deep and allowing the soil to dry to the depth of tillage could result in a soil moisture loss of 1 to 2 inches of water. If the producer irrigates, irrigation costs are increased because more water must be applied to replace the lost moisture. Shallower tillage, even with a rolling stalk chopper, can still result in moisture losses of about ½ inch per trip and cuts the residue loose, allowing it to move. In addition, tillage “plants” weed seeds, increasing competition for soil moisture.
Some say the soil needs to be tilled to “open it up to let water in”. Unfortunately it dries to the depth of tillage and the initial water that is let into the soil is just replacing what was lost, not adding to the soil moisture reserve. When tillage is performed, the soil surface is broken up and pulverized, making the soil prone to crusting from raindrop impact. Thus the tillage thought to open the soil up actually creates a condition that seals the soil, resulting in more runoff. The differences in density between soil layers also impedes water movement into the soil. The long-term use of no-till allows soil structure to build, increasing infiltration and decreasing runoff even more.
Residue cover is lost when doing tillage. This cover protects the soil from raindrop impact, reducing erosion and crusting of the soil. Reduced crusting allows more rainfall to soak in. With more soaking in, less runs off. Also, the residue slows runoff giving it more time to soak into the soil. The residue acts as a mulch reducing evaporation from the soil surface, further conserving moisture. A moist soil with residue cover next season doesn’t get as hot as a bare soil, allowing better root development, especially if the drought continues. Research in west central Nebraska indicates that this residue mulch can conserve as much as 3 to 5 inches of soil moisture in irrigated conditions, greatly reducing irrigation costs and stretching limited irrigation water.
Even without drought concerns, producers should still consider using no-till to improve timeliness and profitability. The diesel fuel requirements for the typical chisel-disk-field cultivate tillage system is about 4.08 gallons per acre including knifing in fertilizer, planting, and one row crop cultivation. By switching to a no-till system, the fuel use decreases to about 1.43 gallons per acre including knifing in fertilizer, planting, and two sprayings. There is a corresponding decrease in labor requirements and an improvement in timeliness without the tillage.
With the soil moisture losses from tillage and reduced soil structure, yields are lower and production costs are higher as tillage increases. No-till tends to be the most profitable tillage system, especially when there are soil moisture and erosion concerns.
Paul Jasa
Extension Engineer
On this week's show Smith, a Plattsmouth farmer, addresses the historical price swing and what factors, such as the LDP, loss of potential government price protection, and loan options, producers should consider when deciding whether to sell.
Other speakers will include Tom Dorn, Lancaster County Extension educator, on grain drying issues and Charles Shapiro, Extension soil nutrient specialist, on nitrogen and manure management.
Market Journal, a UNL production, is broadcast on NETV at 6:30 a.m. CT Saturdays and on NETV2 at 9 a.m. Sundays. For more information visit the Market Journal Web site.
Treatments included the transgenic YieldGard Rootworm hybrid, Poncho 1250 seed treatment, and a variety of liquid and granular insecticides applied at planting.
The study was conducted at a site that was late-planted to corn in 2003 to encourage high rootworm populations. Single row plots 33.5 ft long were planted on April 28 and were replicated four times. Five plants per plot were dug on July 14 and root injury was rated using 1-6 and 0-3 injury scales. Additional experimental details are available at http://entomology.unl.edu/fldcrops/trials.htm
There was a high level of rootworm feeding at this site, and the untreated control plots experienced an average of over two nodes of roots pruned. The transgenic YieldGard Rootworm hybrid, and several planting time insecticides provided a high degree of protection from rootworm feeding injury in this trial. See Table 1 for all the results.
A similar 2004 rootworm trial from Clay Center is also available at the web site mentioned above. Additional field crop efficacy trial reports will be posted there later this fall.
To find out when and how much swine manure can be safely applied to corn and soybeans, University of Nebraska scientists conducted experiments at the Haskell Agricultural Laboratory near Concord.
While the effects of salt accumulations in soil are well studied, this research focused on salt’s effects on growing crops, said Soil Scientist Charles Shapiro.
He teamed with IANR Irrigation Engineer Bill Kranz and Agronomist Charles Wortmann on this research.
“Lots of producers already apply manure to fields through a center pivot,” Kranz said. Growing season applications would save time and money.
“Farmers want to know when and how much manure they can put on their crops before the salt in manure would be toxic to the plants,” Shapiro said.
Researchers applied manure through a custom spray system that simulated pivots but allowed different application schemes on small test plots.
They checked manure’s salt content using simple electrical conductivity, or EC, meters. Higher readings mean more salt.
Liquid manure from a pit was applied to corn and soybeans in early or late July at three concentrations. Some plots received undiluted manure with an EC of 20, some got a 50-50 water-manure mix with an EC of 12 and others received a mix of 75% water and 25% manure with an EC of 6.
These concentrations are higher than farmers typically apply but scientists wanted to identify the upper safe application limits for growing crops.“In the earlier soybean applications, we severely damaged the plants at the high (concentration) rate,” Shapiro said. “In the later stages, we stunted and defoliated the plants, but there was regrowth and survival, and there were much better yields” than with early or heavier applications.
Early full-strength application killed three-fourths of soybeans and some corn. Later application was less damaging to corn.
The EC 12 application in early July stunted soybeans, yellowed leaves and reduced leaf area. In corn, effects were less severe.
Corn yields improved 4% and 13% for early and later EC 6 applications, respectively. Soybean yields decreased 10% and 1% for early and later EC 6 applications, respectively.
Researchers concluded that manure with EC values of 6 or less should be safe for corn and soybeans at all growth stages. EC values of 12 should be safe for soybeans and corn by late July.
Applying manure through a pivot has several advantages over hauling it to the field in fall or spring, Shapiro said.
“It’s better for the crop to use the nutrients in manure right away.
It also greatly reduces chances they’ll leach into the groundwater.”
Pivot manure application also is less expensive and more uniform, Kranz said.
“If you use a wagon, which would be in the 2,500- to 3,000-gallon capacity range, you’re looking at 566 loads compared to one round with the center pivot at a half-inch application,” he said.
The Nebraska Pork Producers help fund this IANR Agricultural Research Division research.
Sandi S. Alswager
While the vast majority of producers comply with soil conservation program requirements, the costs associated with the program have led some producers to collect payments without complying with program provisions, according to a study by Konstantinos Giannakas, agricultural economist in the Institute for Agriculture and Natural Resources.
The U.S. Department of Agriculture requested the study, which Giannakas conducted with Jonathan Kaplan of California State University.
”The USDA wanted to know why farmers don’t always comply, so we looked for loopholes and other problems in the design of their policies,” Giannakas said. “The problem with the current policy design is that the penalty for noncompliance equals the government payment. This is shown to create economic incentives for producers who do not adopt conservation practices to claim government payments they are not entitled to.”
The 1985 Farm Security Act linked eligibility for commodity program payments to conservation activities on highly erodible lands.
Since the inception of the policy, more than 11,000 producers nationwide have been cited for noncompliance violations. Data from 1997 revealed that out of 50,000 producers audited, more than 2,000, or about 4%, were found not to be actively applying conservation measures.
Giannakas said his research showed the extent of producer noncompliance and the level of adoption of conservation practices depend on the size of the government payment to the producer, the costs associated with the adoption of conservation practices, and the level of government oversight and enforcement.
”The share of producers in noncompliance is shown to increase with the costs of adopting conservation practices,” he said. “Noncompliance falls with an increase in either audit frequency or size of farm program payment, or a combination of the two.”
Giannakas said noncompliance can be completely deterred if the expected penalty exceeds the costs associated with program adoption.
”In addition to identifying the economic determinants of noncompliance, the results of this research provide insights on the likely effect of the latest Farm Bill on conservation compliance,” he said. “The positive relationship between producer compliance and the size of the farm program payments suggests that the increase in government support can be expected to reduce noncompliance and increase the adoption of conservation practices.”
A USDA grant helped fund this research, conducted in cooperation with IANR’s Agricultural Research Division.
David Ochsner
Agricultural field workers may choose when to wear the liners. The liners may not be longer than the chemical-resistant glove or extend outside the glove. The liners must be disposed of after 10 hours of use or whenever the liners become contaminated. Lined or flocked gloves, where the lining is attached to the inside of the chemical resistant out glove, remain unacceptable. Regulatory action was taken to reduce the discomfort of unlined chemical resistant gloves, especially during hot or cold periods. Additionally, chemically resistant gloves do not add any appreciable protection against minimal pesticide residues found around the cockpit of an aircraft.
The WPS applies to workers performing hand labor activities in fields treated with pesticides; workers on farms, forests, nurseries and greenhouses where pesticides are used; and pesticide handlers who mix, load, apply or otherwise handle pesticides.
Note from the Editor of The Label: These changes regarding the use of chemical-resistant gloves apply to pesticide usage under the Worker Protection Standard, but do not apply to non-agricultural pesticide applications.
Larry Schulze
Market Journal: Watch for postharvest rebound in soybeans
If market history is any indicator of soybean prices, they likely hit a low this week and began a postharvest rebound, according to Roy Smith, a speaker on this week's Market Journal. This rebound can last from three to twelve weeks.Results from 2004 rootworm insecticide trials
Various corn rootworm treatments were evaluated in an experiment conducted at the University of Nebraska Agricultural Research and Development Center near Mead this summer. Entomology Professor Lance Meinke conducted the trial assessing the efficacy of experimental and commercially available products for use against corn rootworm larvae in corn.
Extension Entomologist
Research explores safe levels, times
for applying manure to growing crops
Applying manure to crops through center pivots could save time and labor and fertilize crops when they need it. Manure, though, has salt that can damage plants.
IANR News Service
UNL study reveals potential
for noncompliance in soil conservation policy
Government policies designed to encourage soil conservation also contain components that may lead to noncompliance in some cases, a University of Nebraska-Lincoln agricultural economist said.
IANR News Writer
EPA revises glove safety requirements
The EPA has revised its requirements for using chemical-resistant gloves for agricultural applications. The Worker Protection Standard (WPS) was amended to make the following changes:
Extension Pesticide Education Specialist
Reader Q & A’s
Selecting the right aeration fan for your bin
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See Table 1 for the estimated static pressure to push a range of airflows through various depths of shelled corn. We recommend axial flow fans for installations requiring static pressures of less than 3.0 inches of water, either axial flow or centrifugal fans for static pressures of 3.0-4.0 inches, and centrifugal fans for installations requiring static pressures of greater than 4.0 inches of water, and Table 1 shows that the static pressure needed to push 1.25 cfm/bu through 20 feet of corn is 5.6 inches of water. A centrifugal fan will work as well as an axial flow fan from a 16-foot to 18-foot grain depth and is recommended for depths greater than 18 feet. To achieve the recommended airflow with the lowest possible input horsepower at full depth, a centrifugal fan is required in this installation.
Tom Dorn
Extension Educator
Based in Lancaster County
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Keith Glewen, Extension Educator based in Saunders County: Dryland soybean yields are much better than we had anticipated. Dryland corn yield and quality is exceptional and will cause some major problems with adequate storage. Irrigated corn and soybeans are very good to excellent. Some growers will question the dollars they invested on irrigating soybeans as there is little difference in yields in some locations. Not enough irrigated corn has been picked to compare yield to last year’s outstanding crop.
Gary Lesoing, Extension Educator based in Nemaha County: Harvest is moving along in Nemaha County and the surrounding area. The past week most of the harvest has been focused on soybeans as they have matured. Yields have generally been excellent. In drier areas, on less productive soils, yields are in the 35-45 bushels per acre range, while in the better soils with timely rainfall, soybean yields of over 70 bushels per acre have been reported. In some of the farm plot test strips, soybean yields over 80 bushels per acre were recorded. Several acres of soybeans have been harvested the past two weeks. Earlier, some corn was harvested. Reported yields have ranged from 125 bushels per acre on some of the poorer, eroded soils to over 230 bushels per acre in a river bottom field. Much of the corn that was harvested, dried down to 15% or less. Storage at the local elevators and terminals is very tight with the excellent harvest we are having. The last cutting of alfalfa has been harvested and some corm stalks are being baled up. Wheat has been planted, but could use some rain to help it get off to a good start.
Soybean condition rated 4% very poor, 10% poor, 25% fair, 46% good, and 15% excellent, above last year and average. Harvest was 37% complete, ahead of last year at 26% and average at 30%.
Sorghum condition rated 4% very poor, 10% poor, 42% fair, 38% good, and 6% excellent, above last year and average. Fifty-eight percent of the acreage was mature, behind last year at 62% and average at 80%. Harvest was 9% complete, behind last year at 11% and average at 25%.
Dry bean condition rated 7% very poor, 18% poor, 30% fair, 39% good, and 6% excellent. Twenty-five percent were harvested, well behind last year at 78% and average at 79%.
Proso millet harvest progressed to 50% complete, behind last year at 85%.
Wheat seeding moved ahead to 85% planted, behind last year at 90% and average at 88%. Fifty-seven percent had emerged, behind last year at 65% and average at 59%. The rainfall of the past weeks should promote germination and establishment of stands.
Alfalfa conditions rated 13% very poor, 15% poor, 29% fair, 36% good, and 7% excellent, above last year and average. Fourth cutting activities were 72% harvested, behind last year at 84%.
USDA Nebraska Agricultural Statistics Service
USDA Nebraska Agricultural Statistics Service
Nebraska hog producers intend to have 170,000 sows farrow during the September-November 2004 quarter, down 6% from the actual farrowings during the same period in 2003 and 2002. Intended farrowings for December 2004 - February 2005, at 170,000 sows, are 3% below the same period in 2003 and 6% below 2003.
U.S. hog inventory up
U.S. inventory of all hogs and pigs on September 1, 2004, was 61.4 million head. This was 1% above September 1, 2003 and June 1,2004. Breeding inventory, at 5.98 million head, was up 1% from September 1, 2003, and also up 1% from last quarter. Market hog inventory, at 55.4 million head, was 1% above last year and 2% above last quarter.
USDA Nebraska Agricultural Statistics Service
Topics and speakers will include: Overview of Nebraska’s Economy and Influences on It, by Richard Baier of the Nebraska Department of Economic Development; Nebraska Community Opportunities with Craig Schroeder of the Center for Rural Entrepreneurship; Flatwater Metroplex Sudy with Cecil Steward of the Joslyn Castle Institute; Economic Development and Strategies with a public initiatives panel including Glenn Friendt of the UNL Entrepreneur Center; Greg Iback, international trade, of the Nebraska Department of Agriculture, John Owens, NU vice president and Harlan Vice Chancellor, Institute of Agriculture and Natural Resources, and Sandy Scofield, director of the UNL Nebraska Rural Initiative.
The conference is sponsored by the Nebraska AgRelations Council. Registration is $30. For more information or to make a reservation, contact the Nebraska AgRelations Council, 104 ACB, P.O. Box 830918, University of Nebraska, Lincoln, NE 68583-0918 or call (402) 472-2821. The registration deadline is Oct. 29.
Old crop soybeans stored in all positions on September 1, 2004 totaled 6.4 million bushels, down 46% from last year and the lowest total since 1977. On-farm stocks are 1.7 million bushels, down 63% from a year ago. Off-farm stocks are 4.7 million bushels, down 36% from 2003.
Wheat stored in all positions on September 1, 2004 totaled 66 million bushels, down 24% from a year ago and the lowest total since 1996. On-farm stocks of 13 million bushels are down 24% from 2003. Off-farm stocks are 53 million bushels, down 24% from last year.
Old crop sorghum stored in all positions on September 1, 2004 totaled 5.5 million bushels, down 7% from last year and the lowest since 1996. On-farm stocks are 600 thousand bushels, up 50% from a year ago. Off-farm stocks are 4.9 million bushels, 11% under 2003.
USDA Nebraska Agricultural Statistics Service
The clinics offer individual and confidential information and education on farm finances; the laws, regulations and policies governing Farm Services Agency (FSA); debt restructuring and other legal options; and how the mediation program can help work with lenders to find an agreeable and workable solution.
Contact the Farm Hotline (800-464-0258) to make an appointment and to learn the clinic location in the town where individuals wish to make an appointment.
Crop condition
USDA Nebraska Agricultural Statistics Service: Corn condition rated 3% very poor, 5% poor, 20% fair, 47% good, and 25% excellent, above last year and average, according to a Oct. 4. Irrigated fields rated 78% good to excellent while dryland fields rated 61% good to excellent. Seventy-one percent of the fields were considered mature, behind last year at 82% and average at 90%. Harvest was 13% complete, behind last year at 16% and average at 25%.
Nebraska cattle on feed up 8%
Nebraska feedlots with capacities of 1,000 or more head contained 1.8 million cattle on feed on September 1, up 8% from last year but 3% below September 1, 2002. Placements of cattle into feedlots during August totaled 420,000 head, down 11% from 2003 and 6% below 2002. Marketings of fed cattle during August totaled 360,000 head, down 3% from last year and 5% below August two years ago.
State hog inventory down
Nebraska inventory of all hogs and pigs on September 1, 2004, was 2.85 million head, according to the USDA’s Nebraska Agricultural Statistics Service. This was 7% below September 1, 2003 but unchanged from June 1, 2004. Breeding inventory, at 360,000 head, was down 4% from September 1, 2003 but unchanged from last quarter. Market hog inventory, at 2.49 million head, was 7% below last year but unchanged from last quarter.
Ag at the Crossroads Nov. 4
Nebraska’s Future Economy -- Interaction and Interrelation with Agriculture will be the theme of this year’s Agriculture at the Crossroads. The conference will be held Nov. 4 at the Best Western Villager Convention Center in Lincoln.Old crop stocks down from last year
Old crop corn stocks in all positions on September 1, 2004 totaled 114 million bushels, down 26% from September 1, 2003, and the lowest total since 1996, according to USDA’s Nebraska Agricultural Statistics Service. Of the total, 49 million bushels are stored on farms, down 9% from a year ago. Off-farm stocks at 65 million bushels are down 35% from 2003.
Farm mediation clinics set for October
The farm mediation program sponsored by the Nebraska Department of Agriculture conducts farm mediation clinics at locations throughout Nebraska. The remaining clinics in October are:![]()

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Published by University of Nebraska Cooperative Extension in the Institute of Agriculture and Natural Resources Cooperating with the counties and the U.S. Department of Agriculture The University of Nebraska-Lincoln does not discriminate on the basis of gender, age, disability, race, color, religion, marital status, veteran's status, national or ethnic origin, or sexual orientation.