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Manganese Deficiency in Soybeans?

Manganese Deficiency In Soybeans? Experts Advise Foliar Application Source: Purdue University, Corn and Soybean Digest Apr. 22, 2009 2:21pm Corn and Soybean Digest If a field is suspected to be manganese deficient, farmers should randomly collect 30-40 top most fully expanded trifoliate leaves in the suspected area and send them to a commercial lab for analysis, Vyn says. If a manganese deficiency is present,...

Soybean Checkoff Calls for Samples to Assess Soybean Quality


The U.S. soybean industry exports more than half of its annual production. Without these exports – valued most recently at $16 billion – fewer profit opportunities would exist for U.S. soybean farmers. To help ensure these export markets, it’s important to give international customers what they demand. “International purchasers ask for a ‘preview’ of the U.S. soybean crop before they start purchasing...

USDA: Farm production expenses drop

U.S. farm production expenditures dropped nearly $20 billion in 2009 after a record-setting high in 2008. “2008 was an abomination,” said Jonah Bowles, agricultural market analyst for Virginia Farm Bureau Federation. “It was a difficult year for farmers, so it’s good news that expenses dropped.” According to a report released by the U.S. Department of Agriculture’s National Agricultural...

Assessing N needs with stalk nitrate tests

Corn growers have had a recent surge of interest in taking end-of-season corn stalk samples to assess nitrogen (N) management practices. The purpose of this article is to briefly describe the end-of-season corn stalk nitrate test with regard to the intent of the test, sampling guidelines, and interpretation of test results. Intent of the test Many corn growers feel that their crop needs to be dark green throughout...

Visual symptoms tell nutrient deficiency story

Throughout the growing season, crops may exhibit unusual coloring, stunted growth and leaf damage or defoliation. Often these visual symptoms are due to nutrient deficiencies which reduce yields, crop quality and ultimately producer profitability. By recognizing visual symptoms during the growing season and pin-pointing production issues before harvest, growers can make plans for post-harvest steps that will...

Urea prices back on the rise

A RAINY winter in the eastern States cropping belt has sent farmers rushing to secure last minute orders of urea to top-dress their nutrient-hungry crops – less than two months after many distributors were hastily offloading unsold stocks at a loss. The surge of demand has also coincided with a sudden rush of overseas buying activity since late June triggering global price rises. Until two months ago world...

What To Expect For Future Potash Prices

One of the main ingredients in fertilizer, Potash helps plants resist disease, thereby improving crop yields. Now, some investors think it can revitalize their portfolios… They have some reason to, considering that demand should only rise from here. The United Nations sees food production needs rising 70% by 2050 to feed the global population of 3 billion additional people. That – and the world’s rising...

Cotton prospects a mixed bag

Crop prospects across the U.S. Cotton Belt range from fairly awful to potentially phenomenal, depending on weather patterns so far. And weather has touched the extremes — too much rain in south Texas and too little in parts of Louisiana, Virginia, Alabama, Arkansas, Florida, Georgia, Virginia and the Carolinas. Representatives from each cotton producing state offered a brief update on crop conditions early...

Sunbelt research targets cotton PGRs

Plant growth regulators, potassium deficiencies and thrips are all the focus of University of Georgia cotton research being conducted at the Sunbelt Ag Expo in Moultrie, Ga. Extension specialists described the various trials during the annual Field Day on July 8. UGA Extension cotton agronomist Guy Collins says one of the most common questions he has received this year is how to manage the growth of newer cotton...

Is In-Season Soybean Fertilization Effective?

For farmers considering emergency or catch-up fertilization of their soybean fields yet this summer, Antonio Mallarino, an agronomy professor at Iowa State University (ISU) working in soil fertility and nutrient management research and extension, says in-season fertilizer application for soybeans will seldom be cost-effective in Iowa. “Producers may be wondering about it, if fertilizer rates were inadequate...

Applying Nitrogen to Patchy Fields

Many cornfields throughout Illinois are showing areas with light-green color next to good-looking plants that are often farther along in development, too. Almost without exception, the pale plants are in low-lying areas where this season’s large amounts of rain have caused frequent ponding. The appearance of the corn crop is an excellent diagnostic tool for nitrogen. Corn that is yellow-green or light...

Rescue nitrogen

Choosing a nitrogen rate is hard enough the first time. It’s even harder the second time when you’re trying to rescue corn after heavy rains have stolen part of the first application. At that point, it’s hard to determine how much nitrogen was lost, how much is left, and the yield potential of a crop that may be struggling to survive in a wet field. It’s a situation many growers found...

How to know when you need a preplant N test

Nitrogen costs are high this spring, a situation that has many farmers looking for ways to apply only the nitrogen their crops really need as a way to maximize the economic benefit. A preplant N test could help you answer the question of how much nitrogen to apply this spring. In an Extension factsheet, University of Missouri Agronomists John Lory and Peter Scharf say as a supplement to the standard soil test,...

Judicious investments pay off

Fungicides, a three-year rotation schedule, nitrogen fertilization and a soil-applied insecticide are investments that pay off with profitable peanut yields, says Collingsworth County, Texas, producer Rusty Strickland. Strickland, who farms at Wellington, averaged 5,800 pounds per acre last year on 385 acres of irrigated peanuts, a yield that helped him earn the 2010 Farm Press Peanut Profitability Award for...

Rain delays corn, bean planting in Northwest Missouri The rain has delayed planting of corn and soybeans in Northwest Missouri

Farmers have been questioning how long one should plant corn and beans. Other concerns include ponding, insect injury, saturated soils and poor stands, Wayne Flanary, University of Missouri regional agronomist in Oregon, said in a news release. Typically, corn is not recommended to be planted past mid- June because there is considerable yield loss. Also, corn might fail to dry in the field in fall. Research...

How to assess corn damage

Recent storms have caused a variety of damage to Mississippi’s corn crop and left growers with management questions. “Likely the most prevalent problem since last weekend has been hail, although ‘greensnap’ (a term describing corn stalks broken by high winds) and flash flooding have also occurred,” writes Erick Larson, Extension grains specialist with Mississippi State University, in a newsletter released...

Ammonium Sulfate As a Lawn Fertilizer

Ammonium sulfate is a water soluble fertilizer providing 21 percent nitrogen by weight and 24 percent sulfur. The guaranteed analysis is 21-0-0+24(S). It can be applied to lawns as a top dressing of nitrogen and sulfur with a broadcast or drop-type spreader. In areas with high pH soils, the sulfur in ammonium sulfate helps lower soil pH levels. As with other fertilizers, water the treated area well after each...

4 Factors Causing Your Corn or Soybean Crop to Look Nutrient-Deficient

Growing season conditions may be the biggest contributor to poor crop appearance today, rather than inadequate soil fertility, says Fabián Fernández, University of Illinois Extension specialist in soil fertility and plant nutrition. “Environmental conditions play an important role in nutrient availability,” Fernández says. “Plants obtain most of their nutrients and water from the soil through...

2010: The year of the fertilizer bargain?

It’s been a while since global fertilizer prices started sliding from record highs, but the beginning of the new year could usher in some good fertilizer buys for farmers. The world market’s dipped but returned from its lowest point. Still, prices are well below the highs from a little over a year ago, when prices for urea, phosphate and potash were all hovering at or near record levels. That means...

Sulfate of potash increases sweet potato crop yields

University studies sponsored by Great Salt Lake Minerals Corporation (GSL), North America’s largest producer of sulfate of potash (SOP), indicate that sulfate of potash may be a more effective potassium fertilizer for sweet potato crops than traditional muriate of potash (MOP), increasing the yield of U.S. #1 sweet potatoes by as much as 32 percent in preliminary studies. Ongoing crop trials at Louisiana...

Phosphorus And Potassium Applications This Spring

With the high price of fertilizers and the late harvest last fall, many fields did not receive the typical phosphorus (P) or potassium (K) applications. Now the question being asked is: Should I apply these nutrients this spring? The answer depends on several factors. The guiding principle in fertilizer decisions is that you should definitely apply nutrients when the chance for yield increase is large and the...

Is Lower-Priced Urea A Bargain?

Urea (46% N) and urea-ammonium nitrate (28% UAN) have typically been about 10¢/lb. of nitrogen (N) more expensive than anhydrous ammonia. Recently, urea prices have fallen substantially to be competitive with ammonia and less expensive than UAN. Lower prices have resulted in an interest among farmers in using urea instead of ammonia or UAN. Is this a good change to make, or not? Urea’s main advantage...

Potassium fertilizer prices remain high

Ever since fertilizer prices peaked last summer, the price of nitrogen and phosphorus has dropped. However, potassium prices have remained high, and it’s causing some concern among grain crops producers. “Last year, input costs rose as commodity prices climbed, but this year, commodity prices are not expected to go as high,” said Lloyd Murdock, Extension soils specialist for the University...

Does Sulfur Pay?

There’s less brimstone dropping from American skies. Sulfur dioxide emissions – think acid rain – have declined sharply in the last three decades, so less sulfur (S) is falling on cropland. Does this mean farmers need to add S fertilizer for maximum corn yields? That question is prompting Corn Belt researchers to pinpoint exactly where S pays today. Research from the 1970s found that S rarely...

Potash the most volatile of fertilizer inputs

Compared to other major fertilizer components, potassium is harder to find, harder to process and less available on a global basis than nitrogen and phosphorus. For farmers that combination likely equates to uneven supply and up and down pricing for the 2009 season. In the upper Southeast the use of phosphorus (P) and potassium (K) fertilizers has declined in the past few years as growers mined existing supplies...

Global demand drives nitrogen prices

Southeast farmers can expect nitrogen prices to remain high in the coming years, primarily due to limited increases in supply and dramatic increases in demand globally. Doug Stone, nitrogen marketing manager for Terra Industries says there is only one word he can think of to describe nitrogen marketing in 2008 — WOW. “We did not expect the dramatic price spike in June and July, nor the equally dramatic price...

Extend Your N: 15 Tips For Improving Your Nitrogen ROI

N mistakes have never been costlier. High nitrogen (N) fertilizer prices and high corn values mean “there’s more money to be made and lost on N,” says Peter Scharf, University of Missouri Extension soil scientist. Nitrogen source, rate, timing and placement, tillage and weather all influence how efficiently N is used. Because of the diversity of Midwest soils and climate, there are no uniform N-use...

New nitrogen stabilizer likely for 2009

Farmers will have a new option to halt nitrogen (N) losses next year. Dow AgroSciences expects federal registration in 2009 for Instinct, an N stabilizer designed for urea ammonium nitrate (UAN) and manure applications. Instinct currently holds a federal 24 (c) registration in Iowa. Farmers have used an N stabilizer—N-Serve—for anhydrous ammonia for over 30 years. However, little liquid fertilizer...

Technology could reduce nitrogen costs

Several Southern producers and researchers are hoping to reduce nitrogen costs on corn and increase harvest efficiency in cotton this coming season with variable-rate applications based on on-the-go sensing technology. In corn, Courtland, Ala., cotton producer Larkin Martin’s on-the-go technology features six N-Tech Greenseeker sensors, each a little smaller than a tissue box, mounted on the toolbar of...

Nitrogen efficiency reduces corn costs

With the high cost of nitrogen fertilizer, farmers need to get optimum use of the product. Reviewing their management plan and making needed changes can potentially save money without compromising yield. Most recent research shows it takes about three quarters of a pound of nitrogen per bushel to reach corn’s maximum yield potential, but some producers use much higher rates, said John Grove, University...

Where Agrotain fits

Agrotain is both a company name and a product name. Agrotain International makes three ag products that protect urea fertilizer from loss. Agrotain is a liquid urease inhibitor that can be impregnated onto dry urea or tank mixed with liquid fertilizer that contains urea such as urea-ammonium nitrate (UAN). The active ingredient is N-(n-butyl) thiophosphoric triamide (NBPT). Agrotain Plus is a dry concentrate...

Is all nitrogen fertilizer created equal?

Today’s cattle producers are facing record-high fertilizer prices. Adding insult to injury, this is on top of two years of record-drought causing poor growth of pastures and hayfields. Because of this, farmers are shopping around for any cheap source of nitrogen (N) and praying for rain to bring their forages back to life. Producers should know that not all sources of N are equal and cheap sources could end...

Early-season nitrogen increases rice growth, yield

Research is proving what rice growers have suspected for years — that a low rate of nitrogen applied to rice in the one- to three-leaf growth stage has a positive effect on production. “Collaborative research in 2005 and 2006 with the University of Arkansas, Mississippi State University and the University of Missouri showed that rice plant height was increased by about 2 inches when 20 pounds of nitrogen...

Nitrogen fertilizer situation and outlook

Of utmost concern to many producers in Arkansas and the rest of the U.S. is the dramatic rise in nitrogen fertilizer prices, particularly urea. Over recent months, a dramatic 50 percent increase in per ton urea prices has occurred. As of early September 2006, the average per ton price of urea in eastern Arkansas was $260. Today, urea prices ranging from $420 to $440 per ton are very common. Uncertainty exists...

Nitrogen fertilizer management for corn

With the large increases in corn acreage in the Mid-South and the increasing cost of nitrogen fertilizer, attention to fertilizer management is paramount. Major points to consider are how applications should be made within and across fields, and when and how much to apply to realize the greatest return. Peter Scharf and colleagues at the University of Missouri published results of research conducted to assess...

Potassium deficiency a problem in Virginia cotton

Potassium deficiency in cotton can severely restrict yield and reduce grades. In 2006, potassium deficiency was a widespread problem in parts of Virginia. Early signs of potassium deficiency, primarily yellowing between the veins of the cotton leaf, showed up in Virginia in late July. Once it occurs, it is too late to do much about it. Virginia Cotton Specialist Joel Faircloth says there are numerous reasons...

Good winter wheat stands still possible when planting late

With good rainfall in many areas and the highest price for winter wheat in some time, there is an increased interest in seeding winter wheat this fall. If you’re seeding winter wheat after harvesting a crop in the fall, it’s likely that you’re planting after the suggested dates for seeding. Other factors, such as rainfall and trying to destroy a stand of downy brome or jointed goatgrass, can...

Sulfur Can Boost Yields

There are 16 essential elements for a plant’s growth and development. How growers manage and apply those elements affects yield, and ultimately their pocket books. The top three — nitrogen (N), phosphorus (P) and potassium (K) — are often managed and applied in starter fertilizers. But recently sulfur, previously considered a secondary nutrient, has had a significant impact on yields when added to...

Ammonium nitrate buyers getting closer scrutiny

Assume, for the sake of argument, you’re a terrorist, bent on carrying out an act of major destruction and your weapon of choice is a truck bomb. Further suppose that to accomplish your nefarious goal you walk into a fertilizer dealership where no one knows you and say, “I need to do some fertilizing and I’d like a couple tons of ammonium nitrate. To go, please.” What are the chances the dealer...

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