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Crop Production And Outlook, Chad Hart 2016 Iowa State University

Crop Production And Outlook, Chad Hart

Chad Hart

The latest round of USDA updates to its World Agricultural Supply and Demand Estimates and Crop Production reports were released on Oct. 10. On the production side, pre-trade estimates had indicated little movement was expected. The October estimates from USDA showed increased corn and soybean production of 1 to 2 percent. The corn increase was driven by an increase in yields, up 1.7 bushels to 154 bushels per acre national average. The soybean increase was driven by a jump in acreage, with harvested area increasing by 2.15 million acres.


May Crop Outlook, Chad Hart 2016 Iowa State University

May Crop Outlook, Chad Hart

Chad Hart

With the May reports, USDA updated its estimates for 2008/09 and put out its first official estimates for 2009/10. On the corn side, ethanol and export demand are increased by 50 million bushels each for 2008. Both of these uses have experienced a rebound over the past few weeks.


Marketing Year Prices Cancel Acre Payments In Iowa, Chad Hart, William M. Edwards 2016 Iowa State University

Marketing Year Prices Cancel Acre Payments In Iowa, Chad Hart, William M. Edwards

Chad Hart

Following the completion of the 2009/10 marketing year, the U.S. Department of Agriculture (USDA) released its final monthly price estimates for corn and soybeans. Over the September through August marketing year the national average price for corn was $3.55 per bushel. This is $.51 less than the average price during the 2008/09 marketing year of $4.06 per bushel. For soybeans, the 2009/10 national average price was $9.60 per bushel, which is $.37 lower than the previous year’s average price of $9.97 per bushel.


2009 Crop Year Is Mirror Image Of 2008, Chad Hart 2016 Iowa State University

2009 Crop Year Is Mirror Image Of 2008, Chad Hart

Chad Hart

The parallels between the 2009 crop season and the 2008 crop season are striking. This summer is closing out much like last summer for crops. The early season concern about delayed planting and crop progress is fading under steady doses of sunshine and timely rains. And with crop conditions holding, crop production is up and prices have worked their way down.


Additional Disaster Payments For 2009 Iowa Soybeans, Chad Hart 2016 Iowa State University

Additional Disaster Payments For 2009 Iowa Soybeans, Chad Hart

Chad Hart

USDA has announced additional disaster payments for the 2009 crop year via the Crop Assistance Program (CAP). Payments will be made to producers of rice, upland cotton, sweet potatoes and soybeans in counties that received Secretarial disaster designations in 2009 for excessive moisture or related conditions. In Iowa, 30 counties qualify for the payments, see the list of counties and map below.


Crop Production And Outlook - The Demand Side, Chad Hart 2016 Iowa State University

Crop Production And Outlook - The Demand Side, Chad Hart

Chad Hart

The latest round of USDA updates to its World Agricultural Supply and Demand Estimates and Crop Production reports were released on Oct. 10. On the demand side, corn feed demand was projected at 5.35 billion bushels, up 150 million from last month, reversing the move from last month. Lower corn prices are seen as the major reason for this shift. Corn demand from ethanol was reduced by 100 million bushels to 4 billion bushels. While lower corn prices should be attractive to the ethanol industry, reduced transportation fuel consumption is a significant drag to the industry. Combined with general ...


Agricultural Research Bulletins, Nos. 175–184, E. W. Bird, D. F. Breazeale, G. C. Sands, Joe L. Robinson, P. K. Whelpton, R. H. Walker, P. E. Brown, M. B. Michaelian, B. W. Hammer, George W. Snedecor, Gertrude M. Cox, Lenore E. Sater, Paul L. Harding, C. B. Lane, John A. Hopkins Jr., Paul L. Taylor 2016 Iowa State College

Agricultural Research Bulletins, Nos. 175–184, E. W. Bird, D. F. Breazeale, G. C. Sands, Joe L. Robinson, P. K. Whelpton, R. H. Walker, P. E. Brown, M. B. Michaelian, B. W. Hammer, George W. Snedecor, Gertrude M. Cox, Lenore E. Sater, Paul L. Harding, C. B. Lane, John A. Hopkins Jr., Paul L. Taylor

John H. Robinson

Volume 15, Bulletins 175-184. (175) Chemistry of Butter Making: II. The Nature of the Fatty Materials in Buttermilk and the significance of Certain Buttermilk Testing Methods; (176) Physiologic Factors Affecting the Germination of Seed Corn; (177) Iowa's Population Prospect; (178) Effects of Lime on the Hydrogen-Ion Concentration and Base Exchange Complex of Gundy Silt Loam; (179) Studies on Acetylmethylcarbinol and Diacetyl in Dairy Products; (180) Disproportionate Subclass Numbers in Tables of Multiple Classification; (181) Passing an Alternating Electric Current Through Food and Fruit Juices; (182) Physiological Behavior of Grimes Golden Apples in Storage; 9183) Bacteriology of Cheese: I. Effect ...


Horizontal Gene Acquisitions, Mobile Element Proliferation, And Genome Decay In The Host-Restricted Plant Pathogen Erwinia Tracheiphila, Lori R. Shapiro, Erin D. Scully, Timothy J. Straub, Jihye Park, Andrew G. Stephenson, Gwyn A. Beattie, Mark L. Gleason, Roberto Kolter, Miguel C. Coelho, Consuelo M. De Moraes, Mark C. Mescher, Olga Zhaxybayeva 2016 Harvard University

Horizontal Gene Acquisitions, Mobile Element Proliferation, And Genome Decay In The Host-Restricted Plant Pathogen Erwinia Tracheiphila, Lori R. Shapiro, Erin D. Scully, Timothy J. Straub, Jihye Park, Andrew G. Stephenson, Gwyn A. Beattie, Mark L. Gleason, Roberto Kolter, Miguel C. Coelho, Consuelo M. De Moraes, Mark C. Mescher, Olga Zhaxybayeva

Gwyn Beattie

Modern industrial agriculture depends on high-density cultivation of genetically similar crop plants, creating favorable conditions for the emergence of novel pathogens with increased fitness in managed compared with ecologically intact settings. Here, we present the genome sequence of six strains of the cucurbit bacterial wilt pathogen Erwinia tracheiphila (Enterobacteriaceae) isolated from infected squash plants in New York, Pennsylvania, Kentucky, and Michigan. These genomes exhibit a high proportion of recent horizontal gene acquisitions, invasion and remarkable amplification of mobile genetic elements, and pseudogenization of approximately 20% of the coding sequences. These genome attributes indicate that E. tracheiphila recently emerged as a ...


An Overview Of Plant Defenses Against Pathogens And Herbivores, Brian C. Freeman, Gwyn A. Beattie 2016 Iowa State University

An Overview Of Plant Defenses Against Pathogens And Herbivores, Brian C. Freeman, Gwyn A. Beattie

Gwyn Beattie

Plants represent a rich source of nutrients for many organisms including bacteria, fungi, protists, insects, and vertebrates. Although lacking an immune system comparable to animals, plants have developed a stunning array of structural, chemical, and protein-based defenses designed to detect invading organisms and stop them before they are able to cause extensive damage. Humans depend almost exclusively on plants for food, and plants provide many important non-food products including wood, dyes, textiles, medicines, cosmetics, soaps, rubber, plastics, inks, and industrial chemicals. Understanding how plants defend themselves from pathogens and herbivores is essential in order to protect our food supply and ...


Simplified Process For Soybean Glycinin And Â-Conglycinin Fractionation, Shaowen Wu, Patricia A. Murphy, Lawrence A. Johnson, Mark A. Reuber, Alfred R. Fratzke 2016 Iowa State University

Simplified Process For Soybean Glycinin And Â-Conglycinin Fractionation, Shaowen Wu, Patricia A. Murphy, Lawrence A. Johnson, Mark A. Reuber, Alfred R. Fratzke

Lawrence A. Johnson

A simplification of the pilot-plant scale modified Nagano method yielding two protein fractions, glycinin and â-conglycinin, by pH adjustment and ultrafiltration membrane separation was developed and compared with our pilot-plant-scale modified Nagano procedure and with a soy protein isolate pilot-plant procedure as our reference process. Two protein fractions, glycinin and â-conglycinin, were produced from our simplified process and compared to the three protein fractions, glycinin, â-conglycinin, and an intermediate protein mixture, produced with the modified Nagano method. The pilot-plant yields of glycinin, â-conglycinin, and intermediate mixture fractions from the modified Nagano method were 9.4, 10.3, and 4.8 ...


Morphological And Molecular Identification And Characterization Of Dry Bean Fungal Root Rot Pathogens In Zambia, Chikoti Mukuma 2016 University of Nebraska-Lincoln

Morphological And Molecular Identification And Characterization Of Dry Bean Fungal Root Rot Pathogens In Zambia, Chikoti Mukuma

Theses, Dissertations, and Student Research in Agronomy and Horticulture

Dry bean is among the most important food legume crops for direct human consumption in Latin America and Africa. Recently, root and crown rot (RCR) has emerged as an important production constraint. Root and crown rot often involve fungal complexes. Thus, the straw, detached leaf, cup and stem tests were compared on their ability to detect the most common pathogens reported to be associated with RCR: Fusarium solani, Fusarium oxysporum, Pythium ultimum, Rhizoctonia solani and Macrophomina phaseolina.Significant differences (P

Next Generation Sequencing (NGS), conventional Polymerase Chain Reaction (PCR), and classical fungal culturing methods were compared in identification of the ...


The Illinois Soil Nitrogen Test: Should It Be Used In Iowa?, John E. Sawyer, Mohammod Ali Tabatabai 2016 Iowa State University

The Illinois Soil Nitrogen Test: Should It Be Used In Iowa?, John E. Sawyer, Mohammod Ali Tabatabai

John E. Sawyer

The test was developed several years ago at the University of Illinois by researchers in the Department of Natural Resources and Environmental Sciences. It is a laboratory procedure designed to measure N liberated from soil heated for 5 hours with dilute alkali solution (sodium hydroxide). The test does not measure nitrate, but does measure exchangeable ammonium and a fraction of soil organic N.


Postemergence Application Of Herbicides In Corn, Michael D. Owen, John E. Sawyer, Robert G. Hartzler 2016 Iowa State University

Postemergence Application Of Herbicides In Corn, Michael D. Owen, John E. Sawyer, Robert G. Hartzler

John E. Sawyer

The Iowa 2006 corn crop is mostly in the ground and much of it will be emerged by the end of the week. Planting progressed rapidly in late April prior to the current wet conditions, and this prolonged wet period will impact weed management plans for those fields planted prior to the rain but not treated with preemergence herbicides or nitrogen (N) fertilizer. This article is revised from a 2003 discussion and will describe two important issues.


Potassium Deficiency Symptoms In Corn, John E. Sawyer 2016 Iowa State University

Potassium Deficiency Symptoms In Corn, John E. Sawyer

John E. Sawyer

The dry conditions this spring have resulted in corn plants expressing potassium (K) deficiency symptoms the past 2 weeks. This phenomenon has appeared in previous dry spring seasons and is back again this year, especially in southern Iowa. Areas of the state that received adequate rainfall are generally not showing K deficiency symptoms. Symptoms can appear even though soil K is adequate for crop production. How can this occur? Uptake of K by plants requires an active root system, especially in the soil zone where plant-available K is located.


Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker 2016 Iowa State University

Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker

John E. Sawyer

Historically, sulfur (S) application has not been recommended on Iowa soils for corn and soybean production. Soil supply or combination from sources such as manure or precipitation has met crop S needs. However, soil S levels or supply may become depleted with prolonged crop removal, sulfate leaching, low precipitation deposition, and declining soil organic matter. The objective of this study was to determine if corn and soybean yields would respond to S fertilizer rate and material at multiple sites across Iowa soils and climatic conditions.


Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker 2016 Iowa State University

Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker

John E. Sawyer

Historically sulfur (S) application has not been recommended on Iowa soils for corn and soybean production. The soil supply or combination from sources such as manure or precipitation has met crop S needs. However, soil S levels or supply will become depleted with prolonged crop removal, sulfate leaching, low precipitation deposition, and declining soil organic matter. The objective of this study was to determine the responsiveness of corn and soybean to S application (first year and residual second year) and S fertilizer material at multiple sites across Iowa soils and climatic conditions.


Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker 2016 Iowa State University

Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker

John E. Sawyer

Historically, sulfur (S) application has not been recommended on Iowa soils for corn and soybean production. Soil supply or combination from sources such as manure or precipitation has met crop S needs. However, soil S levels or supply may become depleted with prolonged crop removal, sulfate leaching, low precipitation deposition, and declining soil organic matter. The objective of this study was to determine if corn and soybean yields would respond to S fertilizer rate and material at multiple sites across Iowa soils and climatic conditions.


Surface Waters: Ammonium Is Not Ammonia – Part 1, John E. Sawyer 2016 Iowa State University

Surface Waters: Ammonium Is Not Ammonia – Part 1, John E. Sawyer

John E. Sawyer

A recent article in The Des Moines Register newspaper has caused considerable controversy regarding nitrogen in Iowa streams and rivers. The article (High ammonia levels threaten D.M.’s water, April 6, 2008) featured information about “ammonia” levels in certain Iowa surface water systems during the recent winter time period. The implications were that manure and fertilizer application to cropland, and subsequent snowmelt and runoff, had resulted in higher than normal “ammonia” levels in surface waters. In the article there was a comparison of the reported levels to an ammonia reading of 0.10 parts per million considered harmful to ...


Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker 2016 Iowa State University

Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker

John E. Sawyer

Historically, sulfur (S) application has not been recommended on Iowa soils for corn and soybean production. Soil supply or combination from sources such as manure or precipitation has met crop S needs. However, soil S levels or supply may become depleted with prolonged crop removal, sulfate leaching, low precipitation deposition, and declining soil organic matter. The objective of this study was to determine if corn and soybean yields would respond to S fertilizer rate and material at multiple sites across Iowa soils and climatic conditions.


Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker 2016 Iowa State University

Sulfur Fertilizer Application To Corn And Soybean, John E. Sawyer, Daniel W. Barker

John E. Sawyer

Historically sulfur (S) application has not been recommended on Iowa soils for corn and soybean production. The soil supply or combination from sources such as manure or precipitation has met crop S needs. However, soil S levels or supply will become depleted with prolonged crop removal, sulfate leaching, low precipitation deposition, and declining soil organic matter. The objective of this study was to determine the responsiveness of corn and soybean to S application (first year and residual second year) and S fertilizer material at multiple sites across Iowa soils and climatic conditions.


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