101. Health Of Ohio's Corn Crop In Question COLUMBUS, Ohio — One thing that can protect Ohio’s corn crop from drought damage is Some of Ohio’s corn crop is experiencing a deficiency in potassium, http://www.ag.ohio-state.edu/~news/story.php?id=3216

102. Products And Solutions : Seeds And Genomics - Insect Protection this pest causes $1 billion in lost revenue annually to the US corn crop. or 30inch corn height, with excellent crop safety and no yield reduction. http://www.monsanto.com/monsanto/layout/products/seeds_genomics/traits/default.a

Home Site Map Contact Us Help Traits Insect Protection Herbicide Resistance US Ag Homepage Detailed Product Information Available YieldGard® Plus Corn YieldGard® Corn Borer YieldGard® Rootworm Bollgard® Insect Protected Cotton ... Roundup Ready® Canola Insect Protection Monsanto has developed genetically improved corn that protects against the European and southwestern corn borer, and genetically engineered cotton that protects against the bollworm. These innovative products not only increase crop yields but also dramatically reduce the need for applications on insecticides. They include Bollgard with Roundup Ready Cotton, Ingard Cotton and YieldGard Insect-Protected Corn. YieldGard Plus Corn YieldGard Plus corn provides growers with in-seed protection, allowing the corn plant to protect itself against the damaging Western and Northern corn rootworm larvae and the European corn borer. All YieldGard Plus corn hybrids will be sold with a seed treatment to offer broad-spectrum control of secondary insect pests such as wireworm, white grub, early flea beetle, and seed corn maggot. YieldGard Plus corn joins Monsanto's "YieldGard" family of insect-protected products for corn, which also includes YieldGard Corn Borer and YieldGard Rootworm corn. Following the necessary regulatory clearances on a state-level in the U.S. and receipt of the Japanese import approval, the YieldGard Plus technology will be made available for planting in corn hybrids through Monsanto's branded seed businesses - DEKALB and Asgrow - as well as through licensed, independent seed companies.

103. Nitrogen Soil Testing For Corn In Virginia For example, a corn crop yielding 150 bushels per acre typically contains about165 lbs N in the grain and Many sources of N can be used by a corn crop. http://www.ext.vt.edu/pubs/rowcrop/418-016/418-016.html

Nitrogen Soil Testing For Corn in Virginia Publication Number 418-016, Posted July 1998 Table of Contents Nitrogen and Corn Production Nitrogen Soil Test Procedure Nitrogen Behavior and Soil Testing Nitrogen Recommendations ... References Nitrogen and Corn Production An adequate supply of plant-available nitrogen (N) is crucial for efficient corn production, and corn N requirements are greater than any other nutrient. For example, a corn crop yielding 150 bushels per acre typically contains about 165 lbs N in the grain and stover, or approximately 1.1 lbs N/bu grain. These calculations are based on actual N uptake, and allowances must be made for actual fertilizer use efficiency and soil N availability. Nitrogen use efficiency is the percentage of applied N that is actually taken up by the crop. Nitrogen use efficiency is normally 50-60%, but can be as high as 75% with proper N timing and placement. Costs of N fertilizers and environmental concerns about nitrate (NO ) from fertilizers, manures, and other nutrient sources leaching into groundwater require that new tools be developed and implemented to improve the use of all N sources available to the corn crop. Many sources of N can be used by a corn crop. Residual N is N that is carried over in the soil from one growing season to the next, and this N source may supply as little as 10% or as much as 100% of the crop's total N need. Residual N is generally low under our climatic conditions because it tends to leach out of the root zone as NO

104. Gray Leaf Spot Disease Of Corn Taking a field out of corn production or rotating to a nonhost crop for one yearcan reduce gray corn is the only crop this fungus is known to attack. http://www.ext.vt.edu/pubs/plantdiseasefs/450-612/450-612.html

Gray Leaf Spot Disease of Corn Author: Erik L. Stromberg, Extension Plant Pathologist, Department of Plant Pathology, Physiology and Weed Science, Virginia Tech Publication Number: 450-612, Posted May 2000 Fig. 1. Corn blighted by Cercospora zeae-maydis , causal agent of gray leaf spot disease. Fig. 2. Characteristic mature gray leaf spot lesions on corn leaf. Note the grayish cast of these lesions. This is due to the production of numerous conidia (spores), which are able to spread to other corn plants and leaves by air currents. Fig. 3. Early symptoms of gray leaf spot disease as seen by transmitted light. Fig. 4. Corn plants lodged due to severe blighting caused by gray leaf spot. Fig. 5. Typical gray leaf spot lesion on leaf sheath. In Virginia gray leaf spot disease of corn (Fig. 1), caused by the fungus Cercospora zeae-maydis, has been generally associated with the corn production areas west of the Blue Ridge Mountains. It is known to occur in fields along creeks or river bottoms after tasselling. However, the widespread use of reduced-tillage, resulting from federal incentives to farmers, has contributed to the expansion of the geographical distribution of gray leaf spot and to an increase in disease severity over the past 25 years. Gray leaf spot is now recognized as one of the most significant yield-limiting diseases of corn worldwide. It poses a serious threat to corn production in many areas of the eastern United States, including Virginia, and more recently in large areas of the U. S. Corn Belt and Africa. No-till or reduced tillage practices, coupled with continuous corn production, is associated with disease development prior to tasselling, with significant yield losses being common. Documented losses in Virginia and elsewhere range from 10 to 60% of grain yield depending on the hybrid and year.

105. Weather Good Or Bad, Web Site Tracks Crop Yield Trends 78 bushels of yield per acre out of the national corn crop, Hurt said. We ve gone from a corn crop of around 10.9 billion bushels, to a crop that s http://news.uns.purdue.edu/html3month/2005/050725.Hurt.estimator.html

July 25, 2005 Weather good or bad, Web site tracks crop yield trends WEST LAFAYETTE, Ind. - Final crop yield numbers are still months away, when the last of the corn and soybeans is harvested. Between now and then, farmers can visit a Purdue University Web site for weekly updates on where yield trends are moving. The Purdue Crop Yield Estimator , available online, provides estimates on corn and soybean crops for the United States and Indiana. Prepared by Purdue's Department of Agricultural Economics , the yield estimator is intended to bridge the gap between monthly U.S. Department of Agriculture yield estimate reports. The yield estimator is updated by 5 p.m. every Monday, from late May through late September. "The yield estimator is information about what the weather has done in the past week and how it might have an impact on increasing or reducing crop yields, both in the United States and Indiana," said Chris Hurt, Purdue Extension agricultural economist. "It is based on the USDA weekly Crop Progress report." Those weekly USDA reports rank crop conditions but do not estimate yields. Official yield estimates are issued each month in the USDA's Crop Production report, beginning Aug. 12.

106. Reason Magazine -- January 2000, Crop Busters By Michael Fumento Earlier in the month, the Bolt Weevils whacked a biotech corn crop at Pioneer After crunching a corn crop at the same university, the group stated, http://www.reason.com/0001/fe.mf.crop.html

Visit Reason 's Web feature on genetically modified foods, " Frankenfood" Frenzy R EASON * January 2000 Crop Busters Self-righteous vandals lead a desperate, ill-informed campaign against genetically modified foods. By Michael Fumento One night last August, a group calling itself Seeds of Resistance used machetes to hack down a half-acre plot of corn at a farm operated by the University of Maine. The crop's offense: It had been genetically engineered to resist herbicides. This characteristic would reduce the number of herbicide applications needed, saving farmers money and reducing chemical runoff into water supplies. It could also reduce or eliminate tilling and hence control topsoil erosion. To gain these advantages, a specially chosen gene from another plant had been inserted into the corn. For that, the corn had to die. Seeds of Resistance said it was sending "a message to those who seek to benefit from the risky endeavor of genetically engineering the food supply." So far this year, anti-biotechnology vandals have struck 13 crop sites in the United States, from Maine to California. The attacks tell us much about biotech opponents, many of whom have increasingly abandoned rational persuasion in favor of "direct action" that shows contempt for the choices of the people they claim to represent. The U.S. vandals acknowledge a debt to overseas activists, especially in the U.K., where wrecking crops that offend one's sensibilities is commonplace. "Many thanks to our comrades in other countries for the inspiration to join them," declared a September

107. Manitowoc Herald Times Reporter - Drought Threatens Corn Crop Local, Sports, Entertainment, Lifestyle, Business headlines, weather, opinion,births and obituaries from the Manitowoc Herald Times Reporter Newspaper. http://www.wisinfo.com/heraldtimes/news/archive/local_21880696.shtml

var prop1 = "Manitowoc" var prop6 = "news" var prop7 = "local_news" Manitowoc Weather Sunny Search 1999 to present Subscribe Manage My Subscription Subscribe Now News ... Contact Us Company Links Gannett Co., Inc. USAToday.com USAWeekend.com Gannett Foundation Today's Front page Posted July 21, 2005 Drought threatens corn crop By Neil Rhines Herald Times Reporter ST. NAZIANZ— Dairy farmer Jay Binversie said his father, retired dairy farmer Bob Binversie, believes this year’s drought may be the worst since 1958. “It’s terrible,” said Binversie, owner of Robinway Dairy Farms since 1993. “My dad says I have to start praying more.” Binversie, like most farmers in the area, said his corn is suffering from drought. A walk through some of his brown, heat-blasted cornfields reveals how close he is to losing much of his crop. He said a usual harvest is about 17 tons of corn per acre. This year he’s guessing he’ll harvest about 6 tons an acre. If rain hasn’t fallen by Aug. 6, he plans to chop the corn and salvage what he can. Coupled with a total loss of alfalfa due to winterkill, the drought is putting dairy farmers to the test. Binversie said he’d probably have to purchase about 300,000 tons of corn silage to feed his 730 milking Holsteins and 400 steers. Corn and alfalfa are the two main crops Wisconsin farmers rely upon to feed their cattle.

108. Liquid Nitrogen Applicator - Variable Rate Fertilizer Applicator - Corn Crops - Applicator reads a corn crop s need for fertilizer and adjusts on the go. applicator that can read the needs of a corn crop and adjust rates on the go. http://farmindustrynews.com/mag/farming_ncredible_applicator_2/

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109. Estimating Corn And Sorghum Silage Value, G74-99-A (Revised January 1986) Calculating Standing corn Crop Value; Calculating the Value Delivered to the Silo;Pricing Silage into the Feed Bunk; Adjusting Price for Additional http://ianrpubs.unl.edu/beef/g99.htm

G74-99-A (Revised January 1986) Estimating Corn and Sorghum Silage Value Arriving at fair and equitable prices for silage requires judgment and attention to detail. Paul Q. Guyer, Extension Beef Specialist Douglas D. Duey, Extension EconomistFarm Management Previous Category Catalog Order Info Calculating Standing Corn Crop Value ... Estimating Value of Silage in the Silo Arriving at fair and equitable prices for silage requires judgment and attention to detail. The amount of grain and moisture contained have major influences on its feed value, and can be used to increase the accuracy of silage pricing. Grain usually comprises 50 to 55 percent of the dry matter and produces 65 to 70 percent of the protein and energy value in corn varieties selected for grain production. On the other hand, silage varieties are more variable, with some having considerably lower grain yields and percentages of grain dry matter. Because of this, using grain production per acre or estimated percentage of grain in the harvested crop as a base for determining the value of the crop can contribute to a fair and equitable price. Grain yields appear to be a less reliable base for pricing forage sorghums. A greater variation in grain-to-forage content and perhaps more lignin in some varieties complicates pricing sorghum on the basis of grain yield or content.

110. Gray Leaf Spot In Corn, NF 96-301 residue remaining on the soil surface from the previous year s corn crop. Gray leaf spot can be managed through crop rotation, hybrid selection, http://ianrpubs.unl.edu/plantdisease/nf301.htm

Nebraska Cooperative Extension NF 96-301 Gray Leaf Spot in Corn David S. Wysong, Extension Plant Pathologist Previous Category Catalog Order Info Gray leaf spot, caused by the fungus Cercospora zeaemaydis , is becoming widespread throughout much of the corn growing region of Nebraska. The development of gray leaf spot is highly dependent upon weather conditions, minimum tillage practices used in corn after corn, and extensive use of susceptible hybrids. The characteristic symptoms of gray leaf spot appear on mature leaves as tan to brown, 1/2 to 1 1/2 inch long, narrow lesions with parallel sides and squared-off ends. The width of the lesion is limited by the small veins of the leaf, hence the parallel sides. Mature individual lesions take on a linear-rectangular appearance. As the number of infections increase, the spots grow together resulting in larger blighted areas. The lesions are tan until dense sporulation under humid conditions produces a grayish cast; hence the common name. Gray leaf spot lesions also may occur on leaf sheaths as relatively large, circular to oblong, tan to brown spots surrounded by a dark brown to purple border. These spots commonly occur just below the sheath-blade juncture. Stalk lesions may occur in heavily infected fields when the fungus spreads from the leaf sheath into the stalk epidermis. Lesions, similar to those on the leaves, also may appear on ear husks. Infected corn residue on the soil surface is the source of primary inoculum for the next corn crop. The fungus is a poor competitor with other soil microbes. The pathogen survives from one season to the next only if surface debris is present. Spores produced by the fungus in the debris are blown by wind or splashed by rain onto young corn leaves where primary infections occur. The spores require relatively long periods (several days) of high humidity to successfully germinate, penetrate, and become established in the leaf tissue. Numerous spores are produced two to three weeks later as the lesions mature. These spores cause secondary infections and serve to spread the disease further within and between adjacent plants and fields. Thus, several to many secondary cycles may occur during the growing season if weather conditions are favorable for disease development.

111. Bloomberg.com: Canada The USDA last week cut its estimate for this year s corn crop 1.8 percent to Last year s US corn crop was valued at $23 billion, while the soybean crop http://www.bloomberg.com/apps/news?pid=10000082&sid=aA1Kam95thKk&refer=canada

112. Brazil GM-free Corn Exports Seen At Record Depending on the winter corn crop in March, Brazil should ship only about 2 Brazil principal summer corn crop is planted in September and harvested http://www.biotech-info.net/Brazil_record.html

Brazil GM-free corn exports seen at record Reese Ewing Reuters News Service December 21, 2001 SAO PAULO, Brazil - Brazil's record corn harvest of 42 million tonnes this season and its reputation for banning genetically modified crops have pushed the country's corn exports to all time highs, independent grains analysts Safras e Mercado said this week. Brazil's 2001/2002 (Feb.-Jan.) net corn exports could reach a record 6.2 million tonnes compared with net imports of 1.8 million tonnes last season, Safras' corn analyst Paulo Molinhari told Reuters. "It should be a record volume equivalent to 60 percent of the corn exports from Argentina, the world's second largest exporter (after the United States)," said Molinhari. But Molinhari said exports are unlikely to continue at this level as crop production should fall next season. "Depending on the winter corn crop in March, Brazil should ship only about 2 million to 3 million tonnes from the next crop. So much of the corn is simply consumed internally," he said. Brazil principal summer corn crop is planted in September and harvested before March, when the smaller winter crop is planted.

113. Corn Growers Assert That Increased Corn Yields Is The Wrong Reason To Plant Gene With USDA predictions of a record corn crop and prices hitting a 12 year low in At a 10 billion bushel crop estimate, GMO corn results in a loss of $1 http://www.biotech-info.net/yields_wrong_reason.html

"Corn Growers Assert That Increased Corn Yields Is the Wrong Reason To Plant Genetically Modified Corn" Added Production Amounts to a $1 to $1.5 billion Loss for U.S. Farmers American Corn Growers Association July, 2000 WASHINGTON, DC, July 19, 2000 The American Corn Growers Association (ACGA) strongly believe that the likelihood of increased corn yields to help provide food for the world's hungry people is the wrong reason for farmers to plant genetically modified (GMO) crops. Increased yields only lead to lower prices received by America's corn producers. The latest public relations campaign by the Administration and biotechnology industry states that the only way to provide enough food for a growing world population is through the increased productivity of biotechnology. With USDA predictions of a record corn crop and prices hitting a 12 year low in the July future's contracts on the Chicago Board of Trade, higher yields are finding no additional world markets while dropping commodity prices even further. Currently corn prices in parts of South Dakota are as low as $1.16 per bushel. Some industry officials claim that GMO corn has a 10% higher yield advantage over traditional, non-GMO corn varieties. In 1999, if all the nation's farmers would have planted GMO corn and with last year's corn crop at 9.4 billion bushels, a 10% increase in yield would have generated an additional 940 million bushels. That is the equivalent to all the annual corn utilized for corn sweeteners and half the annual corn needed for the ethanol industry.

114. Better Farming - Seedbed - 2005 Did the corn crop need more nitrogen in 2004? In a rapidly growing corn crop,this would show up as firing in the bottom leaves of the corn plant, http://www.betterfarming.com/2005/bf-mar05/sb.htm

SUBSCRIBE MARKETS WEATHER LINKS ... HOME Issue March 2005 Behind the Lines Cover Story Letters Coming Events ... Stories Crops Business Legal Better Decisions Research Letter From Europe Rural Roots Contact Us March 2005 Did the corn crop need more nitrogen in 2004? Heavy spring rains caused nitrogen loss in some areas of the province last year. Additional well-timed applications might have helped by KEITH REID One of the questions that has come up repeatedly this year is whether the corn crop ran short of nitrogen last summer. This is really two questions. Did the crop suffer from N deficiency at any point during the growing season; and would it have responded to higher rates of nitrogen application? The answer to the first question is yes in some fields, there was nitrogen deficiency in the crop. The second question does not have as clear-cut an answer, but it is likely that the crop would have responded more to a change in application timing than in nitrogen rate. Three factors can lead to a nitrogen deficiency in a given year. These are reduced N mineralization from organic sources, increased uptake by the crop or increased losses through leaching or denitrification. All of these processes are influenced by the weather. In any year, we expect roughly half of the total nitrogen uptake of a corn crop to be provided by the mineralization of nitrogen from soil organic matter in cash crop fields, and more in fields where legume residues or manure are the primary source of N. Nitrogen mineralization is driven by temperature and soil moisture, so it is slow in cold springs and at extremes of soil moisture (dry or wet). While 2004 had a cool summer, the conditions in May were actually warmer than normal, with adequate moisture, so it is difficult to suggest that mineralization was greatly reduced in 2004.

115. Progress Of Corn Crop Can Be Checked Through Growth Stages corn growers can improve yields by keeping an eye on the growth stages of theircrop. New Mexico State University s Anna María PérezWright has details. http://spectre.nmsu.edu:16080/media/radio2.lasso?i=164

116. Monitoring Soil Moisture Can Help Ensure Good Corn Crop A New Mexico State University agronomist recommends corn growers closely monitorsoil moisture for successful seed germination. Anna María PérezWright http://spectre.nmsu.edu:16080/media/radio2.lasso?i=181

117. The Capital Times About 60 percent of the corn crop was listed in only fair or poor or very poor The soybean crop was doing slightly better than corn after a week when http://www.madison.com/tct/business/index.php?ntid=48223&ntpid=1

118. Columbia Missourian - Missourian News There is little hope for the corn crop, which was scorched two weeks ago during corn surpassed the previous record by 18 percent, and the soybean crop http://columbiamissourian.com/news/story.php?ID=15191

119. CSANR: SARE Program At WSU test plot to determine if the pest causes significant damage to the baby corncrop. Key Words sweet corn, baby corn, crop alternative, western spotted http://csanr.wsu.edu/SARE/FarmerRancher.htm

Washington State University Home CSANR Washington State University 7612 Pioneer Way Puyallup, WA 98371-4998 USA Tel. (253) 445-4626 FAX (253) 445-4579 csanr@wsu.edu Western SARE Grants in Washington State Year: Contact: Karl Kupers P.O. Box 465 Harrington, WA 99134 Phone: Summary, Key Findings: This study will address erosion, both wind and water, that occurs during periods of summer fallow in the Pacific Northwest. This project will investigate alternative crops in a continuous direct seeding (no-till) cropping practice that eliminates summer fallow. Another goal of the project is reduced inputs which will offset reliance on subsidies and increase net return per acre. Key Words: erosion, summer fallow, direct seeding, alternative crops Links: Project Title: Alternative Techniques for Control of Apple Replant Disease Year: Contact: Fred Barkley Manson, WA 98831 Summary, Key Findings: This project will explore cultural approaches to controlling replant disease in apple orchards, including a fallow period, green manure crops, microbial inoculants, and soil amendments. Replicated field plots will be used to produce statistically valid data. Key Words: replant disease, apple orchards, manure crops, soil amendments, microbial inoculants

120. Corn And The Environment-Corn Breeding And Genetics The management window for this season’s corn crop has all but passed. On averagecrop heat unit accumulation across the province is near normal and the http://www.ontariocorn.org/newsrel/fieldCrop062205.htm

Ontario Field Crop Report June 22, 2005 by OMAF Field Crop Specialists For emerging issues, questions or to provide feedback on this report, contact the CropLine at 1-888-449-0937. Technical information can also be obtained at the OMAF Field Crops Webpage at http://www.gov.on.ca/OMAFRA/english/crops/index.html . Referenced OMAF Publications include Publication 811 Agronomy Guide for Field Crops ($20), 812 Field Crop Protection Guide ($10), 75 Guide to Weed Control ($10), and 505 Ontario Weeds ($15). These can be obtained from your OMAF Resource Centre, or by calling the Publications Office at 888-466-2372. Corn Most of the corn crop across the province looks good. Nitrogen application should be complete and the window for weed control has essentially passed. The management window for this season’s corn crop has all but passed. On average crop heat unit accumulation across the province is near normal and the stage of much of the crop is in the expected V8-10 stage with 9-12 leaves emerged and bent over for this date. For London Ontario the 30 year normal CHU accumulation is 861 and presently in 2005, 869 have been recorded. Areas east and north are averaging ~ 50 CHU’s behind normal which is good considering the weather conditions experienced in May. Rainfall has been spotty but in general soil moisture is holding up well. The crop is entering the period of rapid growth. Forages Unpredicted rainfall caught a lot of recently cut hay in the swath but the recent rains have benefited regrowth in previously harvested fields.

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