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Full-Text Articles in Life Sciences

Switchgrass Nitrogen Response And Estimated Production Costs On Diverse Sites, John H. Fike, James W. Pease, Vance N. Owens, Rodney L. Farris, Julie L. Hansen, Emily A. Heaton, Chang O. Hong, Hilary S. Mayton, Robert B. Mitchell, Donald R. Viands Oct 2017

Switchgrass Nitrogen Response And Estimated Production Costs On Diverse Sites, John H. Fike, James W. Pease, Vance N. Owens, Rodney L. Farris, Julie L. Hansen, Emily A. Heaton, Chang O. Hong, Hilary S. Mayton, Robert B. Mitchell, Donald R. Viands

Agronomy Publications

Switchgrass (Panicum virgatum L.) has been the principal perennial herbaceous crop investigated for bioenergy production in North America given its high production potential, relatively low input requirements, and potential suitability for use on marginal lands. Few large trials have determined switchgrass yields at field scale on marginal lands, including analysis of production costs. Thus, a field-scale study was conducted to develop realistic yield and cost estimates for diverse regions of the USA. Objectives included measuring switchgrass response to fertility treatments (0, 56, and 112 kg N ha−1) and generating corresponding estimates of production costs for sites with diverse soil ...


Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards Jul 2016

Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards

William Edwards

Hail damage to crops in north central Iowa caused great losses; the total of which will become more defined with harvest. The following guidelines are intended to help farmers through the process of adjusting hail-damaged crops for crop insurance reporting.


Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards Jul 2016

Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards

William Edwards

In some years cold weather or frequent rains prevent tillage and planting from being completed as early as desired to achieve optimum yields. When this happens some adjustments may be made to the amount of coverage provided by Multiple Peril Crop Insurance (MPCI) as well as other types of crop insurance. These adjustments are subject to revision each year by the Risk Management Agency and crop insurance vendors.


Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart Jul 2016

Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart

William Edwards

Late planted corn, soybeans and oats crops can be harvested as forages instead of for grain. Options include corn or oat silage, earlage, and oat or soybean hay. Estimating a value for these crops is made difficult by the fact there are few reported prices or significant markets in which they are bought and sold. However, there are two other general approaches to valuing grain crops harvested as forage. Both are based on comparisons to alternative actions by either the forage buyer or seller.


Crop Insurance Has Some Changes For 2009, William M. Edwards Jul 2016

Crop Insurance Has Some Changes For 2009, William M. Edwards

William Edwards

Crop insurance indemnity prices, guarantees and premiums were all at record levels for corn and soybeans in 2008. Current market conditions make it unlikely that those levels will be reached again in 2009, but they will still be attractive. The Risk Management Agency has announced indemnity prices of $4 per bushel for corn and $9.90 per bushel for soybeans for APH (yield) insurance guarantees for 2009, the second highest prices ever offered. Prices for revenue insurance policies will not be known until the end of February.


Renting And Selling Cornstalks, William M. Edwards Jul 2016

Renting And Selling Cornstalks, William M. Edwards

William Edwards

Dry weather has created a shortage of pasture and hay for many Iowa livestock producers. However, cornstalks are an abundant source of winter feed for beef cows in Iowa. When cornstalks are supplemented with protein, vitamins, and minerals, they can supply the nutritional needs of cows that are in moderately good body condition during fall and early winter.


Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards Jul 2016

Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards

William Edwards

In some years cold weather or frequent rains prevent tillage and planting from being completed as early as desired to achieve optimum yields. When this happens some adjustments may be made to the amount of coverage provided by Multiple Peril Crop Insurance (MPCI) as well as other types of crop insurance. These adjustments are subject to revision each year by the Risk Management Agency and crop insurance vendors.


Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards Jul 2016

Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards

William Edwards

Hail damage to crops in north central Iowa caused great losses; the total of which will become more defined with harvest. The following guidelines are intended to help farmers through the process of adjusting hail-damaged crops for crop insurance reporting.


Crop Insurance Has Some Changes For 2009, William M. Edwards Jul 2016

Crop Insurance Has Some Changes For 2009, William M. Edwards

William Edwards

Crop insurance indemnity prices, guarantees and premiums were all at record levels for corn and soybeans in 2008. Current market conditions make it unlikely that those levels will be reached again in 2009, but they will still be attractive. The Risk Management Agency has announced indemnity prices of $4 per bushel for corn and $9.90 per bushel for soybeans for APH (yield) insurance guarantees for 2009, the second highest prices ever offered. Prices for revenue insurance policies will not be known until the end of February.


Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards Jul 2016

Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards

William Edwards

Hail damage to crops in north central Iowa caused great losses; the total of which will become more defined with harvest. The following guidelines are intended to help farmers through the process of adjusting hail-damaged crops for crop insurance reporting.


Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards Jul 2016

Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards

William Edwards

In some years cold weather or frequent rains prevent tillage and planting from being completed as early as desired to achieve optimum yields. When this happens some adjustments may be made to the amount of coverage provided by Multiple Peril Crop Insurance (MPCI) as well as other types of crop insurance. These adjustments are subject to revision each year by the Risk Management Agency and crop insurance vendors.


Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart Jul 2016

Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart

William Edwards

Late planted corn, soybeans and oats crops can be harvested as forages instead of for grain. Options include corn or oat silage, earlage, and oat or soybean hay. Estimating a value for these crops is made difficult by the fact there are few reported prices or significant markets in which they are bought and sold. However, there are two other general approaches to valuing grain crops harvested as forage. Both are based on comparisons to alternative actions by either the forage buyer or seller.


Crop Insurance Has Some Changes For 2009, William M. Edwards Jul 2016

Crop Insurance Has Some Changes For 2009, William M. Edwards

William Edwards

Crop insurance indemnity prices, guarantees and premiums were all at record levels for corn and soybeans in 2008. Current market conditions make it unlikely that those levels will be reached again in 2009, but they will still be attractive. The Risk Management Agency has announced indemnity prices of $4 per bushel for corn and $9.90 per bushel for soybeans for APH (yield) insurance guarantees for 2009, the second highest prices ever offered. Prices for revenue insurance policies will not be known until the end of February.


Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart Jul 2016

Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart

William Edwards

Late planted corn, soybeans and oats crops can be harvested as forages instead of for grain. Options include corn or oat silage, earlage, and oat or soybean hay. Estimating a value for these crops is made difficult by the fact there are few reported prices or significant markets in which they are bought and sold. However, there are two other general approaches to valuing grain crops harvested as forage. Both are based on comparisons to alternative actions by either the forage buyer or seller.


Renting And Selling Cornstalks, William M. Edwards Jul 2016

Renting And Selling Cornstalks, William M. Edwards

William Edwards

Dry weather has created a shortage of pasture and hay for many Iowa livestock producers. However, cornstalks are an abundant source of winter feed for beef cows in Iowa. When cornstalks are supplemented with protein, vitamins, and minerals, they can supply the nutritional needs of cows that are in moderately good body condition during fall and early winter.


Crop Insurance Has Some Changes For 2009, William M. Edwards Jul 2016

Crop Insurance Has Some Changes For 2009, William M. Edwards

William Edwards

Crop insurance indemnity prices, guarantees and premiums were all at record levels for corn and soybeans in 2008. Current market conditions make it unlikely that those levels will be reached again in 2009, but they will still be attractive. The Risk Management Agency has announced indemnity prices of $4 per bushel for corn and $9.90 per bushel for soybeans for APH (yield) insurance guarantees for 2009, the second highest prices ever offered. Prices for revenue insurance policies will not be known until the end of February.


Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards Jul 2016

Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards

William Edwards

In some years cold weather or frequent rains prevent tillage and planting from being completed as early as desired to achieve optimum yields. When this happens some adjustments may be made to the amount of coverage provided by Multiple Peril Crop Insurance (MPCI) as well as other types of crop insurance. These adjustments are subject to revision each year by the Risk Management Agency and crop insurance vendors.


Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards Jul 2016

Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards

William Edwards

Hail damage to crops in north central Iowa caused great losses; the total of which will become more defined with harvest. The following guidelines are intended to help farmers through the process of adjusting hail-damaged crops for crop insurance reporting.


Suitability Of Winter Canola (Brassica Napus) For Enhancing Summer Annual Crop Rotations In Iowa, Mary H. Wiedenhoeft, Rafael A. Martinez-Feria, Thomas C. Kaspar, Keri L. Jacobs Jan 2015

Suitability Of Winter Canola (Brassica Napus) For Enhancing Summer Annual Crop Rotations In Iowa, Mary H. Wiedenhoeft, Rafael A. Martinez-Feria, Thomas C. Kaspar, Keri L. Jacobs

Leopold Center Completed Grant Reports

What are the prospects for winter canola as an alternative crop for Iowa farmers? This project examined the economics and costs/benefits of adding canola as a third crop or a cover crop in rotations.


Assessing Nitrogen Credits From Clover Cover Crops And Effects Of Seed Inoculation, Ajay Nair, Kathleen Delate, Georgeanne Artz, Corene Bregendahl Jan 2015

Assessing Nitrogen Credits From Clover Cover Crops And Effects Of Seed Inoculation, Ajay Nair, Kathleen Delate, Georgeanne Artz, Corene Bregendahl

Iowa State Research Farm Progress Reports

A wide array of information is available on cover crop selection, planting date, and potential advantages, but very little data is available on cover crop performance under Iowa growing conditions. In order to expand cover crop options for Iowa growers, more precise and region-specific information is needed.


Farm-Scale Costs And Returns For Second Generation Bioenergy Cropping Systems In The Us Corn Belt, Robert K. Manatt, Arne Hallam, Lisa A. Schulte, Emily A. Heaton, Theodore P. Gunther, Richard B. Hall, Kenneth J. Moore Sep 2013

Farm-Scale Costs And Returns For Second Generation Bioenergy Cropping Systems In The Us Corn Belt, Robert K. Manatt, Arne Hallam, Lisa A. Schulte, Emily A. Heaton, Theodore P. Gunther, Richard B. Hall, Kenneth J. Moore

Natural Resource Ecology and Management Publications

While grain crops are meeting much of the initial need for biofuels in the US, cellulosic or second generation (2G) materials are mandated to provide a growing portion of biofuel feedstocks. We sought to inform development of a 2G crop portfolio by assessing the profitability of novel cropping systems that potentially mitigate the negative effects of grain-based biofuel crops on food supply and environmental quality. We analyzed farm-gate costs and returns of five systems from an ongoing experiment in central Iowa, USA. The continuous corn cropping system was most profitable under current market conditions, followed by a corn–soybean rotation ...


Agronomic, Environmental And Economic Performance Of Alternative Biomass Cropping Systems, Lisa A. Schulte Moore, Kenneth J. Moore, Richard B. Hall, Arne Hallam, Matt Helmers Jan 2013

Agronomic, Environmental And Economic Performance Of Alternative Biomass Cropping Systems, Lisa A. Schulte Moore, Kenneth J. Moore, Richard B. Hall, Arne Hallam, Matt Helmers

Leopold Center Completed Grant Reports

If cellulosic biomass is to play a significant role in America's energy future, research needs to be conducted on the optimal production and placement practices. This project looked at a portfolio of biomass cropping systems that might be adopted for Iowa.


Improvement Of Farmers' Incomes Through Improved Processing Of Sorghum And Millets In West Africa, Ababacar Sadikh N'Doye, Bruce Hamaker, Roy L. Whistler Nov 2011

Improvement Of Farmers' Incomes Through Improved Processing Of Sorghum And Millets In West Africa, Ababacar Sadikh N'Doye, Bruce Hamaker, Roy L. Whistler

INTSORMIL Presentations

Purdue University and ITA are very active in the USAID INTSORMIL CRSP Program for promoting the production and the consumption of millet and sorghum in West Africa. Countries involved in this program are : Burkina Faso, Mali, Niger, Nigeria and Sénégal.

Market-oriented objectives of the INTSORMIL Program on millet and sorghum in West Africa:

Objective 1: Increase the supply of high quality grain through the introduction of new production technologies at the farmer level in West Africa.

Objective 2: Contribute to the development of the processing sector through technologies improvement , more effective technology transfer to processors, and better links between processors ...


Cellulosic Ethanol: The Benifits, Obstacles, And Implications For Nebraska, Cassidee Lin Thompson Apr 2010

Cellulosic Ethanol: The Benifits, Obstacles, And Implications For Nebraska, Cassidee Lin Thompson

Environmental Studies Undergraduate Student Theses

Abstract Ethanol is a biofuel that has unique capabilities to mitigate global climate change by reducing greenhouse gas emissions while simultaneously supporting rural economies and decreasing the United States’ dependence on foreign oil. Currently, the state of Nebraska depends on corn ethanol, which may be unsustainable. Cellulosic ethanol is a promising alternative but it is not without its problems, including high production costs and potential environmental damage. This thesis is an attempt to understand the benefits, downfalls, and processes of corn-based and cellulosic ethanol and the potential implications to Nebraska. This research should shed some light on the current obstacles ...


Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards Mar 2010

Crop Insurance Decisions Related To Delayed And Prevented Planting, William M. Edwards

Integrated Crop Management News

In some years cold weather or frequent rains prevent tillage and planting from being completed as early as desired to achieve optimum yields. When this happens some adjustments may be made to the amount of coverage provided by Multiple Peril Crop Insurance (MPCI) as well as other types of crop insurance. These adjustments are subject to revision each year by the Risk Management Agency and crop insurance vendors.


Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards Sep 2009

Adjusting Hail-Damaged Crops For Crop Insurance Reporting, William M. Edwards

Integrated Crop Management News

Hail damage to crops in north central Iowa caused great losses; the total of which will become more defined with harvest. The following guidelines are intended to help farmers through the process of adjusting hail-damaged crops for crop insurance reporting.


2009 Crop Year Is Mirror Image Of 2008, Chad Hart Sep 2009

2009 Crop Year Is Mirror Image Of 2008, Chad Hart

Integrated Crop Management News

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.


Crop Insurance Has Some Changes For 2009, William M. Edwards Feb 2009

Crop Insurance Has Some Changes For 2009, William M. Edwards

Integrated Crop Management News

Crop insurance indemnity prices, guarantees and premiums were all at record levels for corn and soybeans in 2008. Current market conditions make it unlikely that those levels will be reached again in 2009, but they will still be attractive. The Risk Management Agency has announced indemnity prices of $4 per bushel for corn and $9.90 per bushel for soybeans for APH (yield) insurance guarantees for 2009, the second highest prices ever offered. Prices for revenue insurance policies will not be known until the end of February.


Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart Sep 2008

Valuing Immature Grain Crops As Forage, William M. Edwards, Stephen K. Barnhart

Integrated Crop Management News

Late planted corn, soybeans and oats crops can be harvested as forages instead of for grain. Options include corn or oat silage, earlage, and oat or soybean hay. Estimating a value for these crops is made difficult by the fact there are few reported prices or significant markets in which they are bought and sold. However, there are two other general approaches to valuing grain crops harvested as forage. Both are based on comparisons to alternative actions by either the forage buyer or seller.


Resource Conservation Practices: Consideration In Selecting No-Till, Mahdi Al-Kaisi, H. Mark Hanna, Michael D. Duffy Jul 2008

Resource Conservation Practices: Consideration In Selecting No-Till, Mahdi Al-Kaisi, H. Mark Hanna, Michael D. Duffy

Agriculture and Environment Extension Publications

Consider the advantages of a no-till system. This publication looks at weed control, residue management, equipment requirements, nutrient management and the results of yield and economic return studies.