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Potential For Sorghum Genotypes In A Double-Cropping System, Ben Michael Goff, Kenneth J. Moore, Steven L. Fales, Emily A. Heaton 2017 Iowa State University

Potential For Sorghum Genotypes In A Double-Cropping System, Ben Michael Goff, Kenneth J. Moore, Steven L. Fales, Emily A. Heaton

Emily Heaton

The majority of the ethanol currently produced in the United States is derived from the hydrolysis and fermentation of starch provided from corn (Zea mays) grain. Although this is a suitable temporary solution, there are some long-term issues associated with continued use of corn grain as an ethanol feedstock. It has been estimated that if the entire U.S. corn crop was used for ethanol production, it would only meet approximately 15 to 25% of the U.S. transportation fuel need. Thus ethanol produced from biomass is expected to help meet the energy needs that grain ethanol may not provide.


New Isu Research May Help Farmers Make More Informed Decisions About Land Use, Elke Brandes, Emily A. Heaton, Lisa A. Schulte-Moore, Fred Love 2017 Iowa State University

New Isu Research May Help Farmers Make More Informed Decisions About Land Use, Elke Brandes, Emily A. Heaton, Lisa A. Schulte-Moore, Fred Love

Emily Heaton

A new study from a multidisciplinary team led by Iowa State University agronomists shows that significant portions of Iowa farmland consistently lose money and could influence many farmers to change how they use some of the acres they devote to corn and soybeans.


Miscanthus Establishment And Survival, Nicholas N. Boersma, Emily A. Heaton 2017 Iowa State University

Miscanthus Establishment And Survival, Nicholas N. Boersma, Emily A. Heaton

Emily Heaton

Rising costs of petroleum fuels and increased awareness of the adverse effects of greenhouse gases have spurred interest in renewable fuels and other ‘green’ products. Recent legislation has set goals of approximately 20 billion gallons of renewable fuel produced from non-corn starch sources by the year 2022. These driving forces have increased interest in dedicated bioenergy crops. Among perennial grasses, which have received an exceptional amount of attention as dedicated energy crops, one stands out: Miscanthus (Miscanthus × giganteus).


Miscanthus Establishment And Survival, Nicholas N. Boersma, Emily A. Heaton 2017 Iowa State University

Miscanthus Establishment And Survival, Nicholas N. Boersma, Emily A. Heaton

Emily Heaton

Rising costs of petroleum fuels and increased awareness of the adverse effects of greenhouse gases have spurred interest in renewable fuels and other ‘green’ products. Recent legislation has set goals of approximately 20 billion gallons of renewable fuel produced from non-corn starch sources by the year 2022. These driving forces have increased interest in dedicated bioenergy crops. Among perennial grasses, which have received an exceptional amount of attention as dedicated energy crops, one stands out: Miscanthus (Miscanthus x giganteus).


Is It Too Late To Dig Miscanthus For Spring Planting?, Emily A. Heaton, Nicholas N. Boersma 2017 Iowa State University

Is It Too Late To Dig Miscanthus For Spring Planting?, Emily A. Heaton, Nicholas N. Boersma

Emily Heaton

Giant Miscanthus (Miscanthus × giganteus) is a perennial warm-season grass used for bioenergy, and is being planted on thousands of acres in Missouri and Arkansas this spring. Given the warm spring, and the high level of interest in Miscanthus this year, we have been getting lots of questions around propagation and planting.


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 2017 Iowa State University

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

Emily Heaton

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 ...


Economies Of Scale In Integrated Pest Management In Vegetable And Fruit Production, Franklin Quarcoo, Conrad Bonsi, David Nii O. Tackie, Walter A. Hill, Gertrude Wall, George Hunter 2017 Tuskegee University

Economies Of Scale In Integrated Pest Management In Vegetable And Fruit Production, Franklin Quarcoo, Conrad Bonsi, David Nii O. Tackie, Walter A. Hill, Gertrude Wall, George Hunter

Professional Agricultural Workers Journal

Abstract

Pest management is achieved directly using a variety of tools, including pesticides, and indirectly through a number of agronomic/cultural practices such as irrigation and fertilizer application; collectively these practices function to positively effect general plant health. Healthier plants are more resistant to or tolerant of pests. This study explores the scale differences that impact the pest management significance and suitability of certain agronomic practices. Scale differences were discussed using literature-based information, direct field observations, and anecdotal information on the relative advantages of drip and sprinkler irrigation systems; organic and conventional cultivation of crops; crop rotation versus mono-cropping systems ...


1938 Iowa Corn Yield Test, Marcus S. Zuber, Joe L. Robinson 2017 U.S.D.A.

1938 Iowa Corn Yield Test, Marcus S. Zuber, Joe L. Robinson

Bulletin (Iowa Agricultural Experiment Station)

A total of 1,110 district entries was made in the 12 fields of the 1938 Iowa Corn Yield Test. These were divided into three groups on the basis of the indicated seed grown by the entrant in 1937; Regular Open-Pollinated, Regular Hybrids, and Experimental Hybrids.


Marketing Iowa Cantaloupes, A. T. Erwin, Geoffrey Shepherd, N. D. Morgan 2017 Iowa State College

Marketing Iowa Cantaloupes, A. T. Erwin, Geoffrey Shepherd, N. D. Morgan

Bulletin (Iowa Agricultural Experiment Station)

Cantaloupe production is well adapted to the sand land areas. This type of soil, though not well adapted to corn and general farm crops, may be advantageously devoted to cantaloupe growing.

Cantaloupe marketing in Iowa presents a number of interesting and complex problems. These include consideration of varietal adaptation, the temperature factor, changes in transporting and selling agencies and competing areas of production. The objective of this bulletin is to show clearly what these problems are and to suggest possible methods of meeting them.


The 1937 Iowa Corn Yield Test, Joe L. Robinson, R. C. Eckhardt, M. M. Rhoades, M. S. Zuber 2017 Iowa State College

The 1937 Iowa Corn Yield Test, Joe L. Robinson, R. C. Eckhardt, M. M. Rhoades, M. S. Zuber

Bulletin (Iowa Agricultural Experiment Station)

The purpose of the Iowa Corn Yield Test is to find for each district and section of the state those strains of open-pollinated corn and hybrid combinations which produce the greatest yield, mature properly, possess resistance to lodging and have good quality or possess other characteristics which might make them desirable. Significant differences in these characteristics between different kinds of corn grown in adequately replicated tests may be attributed to differences inherent in the strains.


Barley In Iowa, L. C. Burnett, Chas. S. Reddy 2017 Iowa State College

Barley In Iowa, L. C. Burnett, Chas. S. Reddy

Bulletin (Iowa Agricultural Experiment Station)

Barley yields in Iowa are higher than those for oats, but in spite of this 15 times more acres are sown to oats than to barley. During the 10 year period, 1925-34, the farms of Iowa produced average acre yields of 1,007 pounds of oats on 6,000,000 acres and 1,238 pounds of barley on 460,000 acres. Figure 1, presenting data from the Iowa Year Book of Agriculture, shows the relative acreage and acre yields of the two crops from 1900 to 1934. In order that a direct comparison may readily be made, the yields of ...


Hybrid Corn In Iowa, A. A. Bryan, R. W. Jugenheimer 2017 Iowa State College

Hybrid Corn In Iowa, A. A. Bryan, R. W. Jugenheimer

Bulletin (Iowa Agricultural Experiment Station)

Hybrid corn is a comparatively recent development. Extensive breeding programs for the development of corn hybrids date from only about 1920—the Iowa program was begun in 1922. Despite the newness of hybrid corn, yield comparisons in the Iowa Corn Yield Test during the past 10 years have adequately demonstrated the superiority of certain hybrids over the best open-pollinated varieties. Results of these and other comparisons have awakened among growers a keen interest in the possibilities of hybrid corn.

Every grower is interested in obtaining large acre yields. The net profit from growing a bushel of corn is the difference ...


The 1936 Iowa Corn Yield Test, M. M. Rhoades, Joe L. Robinson 2017 Iowa State College

The 1936 Iowa Corn Yield Test, M. M. Rhoades, Joe L. Robinson

Bulletin (Iowa Agricultural Experiment Station)

1. Eight hundred seventy-nine entries were made in the 10 harvested districts of the 1936 Iowa Corn Yield Test. The yield test fields in districts 4 and 7 were abandoned because of crop failure. The entries were divided into four groups; regular open-pollinated, experimental open-pollinated, regular hybrids and experimental hybrids.

2. Data were obtained for each entry on acre yield, percentage stand, moisture content at time of harvest, lodging resistance, ear height, percentage of dropped ears and percentage of damaged kernels.

3. The outstanding feature of the 1936 Iowa Corn Yield Test was the superior performance of the hybrid combinations ...


Hail Damage To Corn, J. C. Eldredge 2017 Iowa State College

Hail Damage To Corn, J. C. Eldredge

Bulletin (Iowa Agricultural Experiment Station)

Each year thousands of Corn Belt farmers, as they nurse their crops from kernel to ear watch gathering ram clouds with a hopeful eye. And each year, instead of the gentle shower of their anticipation, many of these farmers see the dreaded hailstorm come pounding across the country-side, leaving in its wake a path of twisted, bruised and broken corn plants.

Depending upon the stage of development and the apparent severity of the damage, there follows the indecision as to whether to replant, replace with another crop or hope that following conditions will be favorable to the damaged field. Or ...


The 1935 Iowa Corn Yield Test, Joe L. Robinson, M. M. Rhoades 2017 Iowa State College

The 1935 Iowa Corn Yield Test, Joe L. Robinson, M. M. Rhoades

Bulletin (Iowa Agricultural Experiment Station)

The purpose of the Iowa Corn Yield Test is to find for each district of the state those strains of com which w ill produce the largest yields of sound grain. Significant differences in yield between strains grown in test fields under as nearly as possible the same conditions may be attributed to differences inherent in the strain.

The test was conducted in a manner similar to that of 1933 and 1934 in that 9 instead of 12 fields were used. Data were obtained this year, for the first time, on the percentage of dropped ears and on the percentage ...


Effect Of Harvesting, Spacing And Age Of Plants On Yields Of Asparagus, E. S. Haber 2017 Iowa State College

Effect Of Harvesting, Spacing And Age Of Plants On Yields Of Asparagus, E. S. Haber

Bulletin (Iowa Agricultural Experiment Station)

Although Iowa has never ranked high among the states as a producer of asparagus for market or canning, the asparagus acreage planted, particularly by canners, is increasing.

No exact information is available concerning the effect of the cutting season’s length upon yields over a period of years. Market gardeners usually stop cutting asparagus in Iowa between June 1 and June 15. The demand for asparagus at this time decreases and the prices drop too low for profitable harvesting. To prevent damage to future yields, June 15 also appears to be the latest safe harvest date, though no substantiating experimental ...


Choosing Legumes And Perennial Grasses, F. S. Wilkins, H. D. Hughes 2017 Iowa State College

Choosing Legumes And Perennial Grasses, F. S. Wilkins, H. D. Hughes

Bulletin (Iowa Agricultural Experiment Station)

Many letters are received annually by the Iowa Agricultural Experiment Station requesting information on the different legumes and grasses. This publication has been prepared to answer the more important questions pertaining to the choice of legumes and grasses for different uses and conditions.2

Legumes of greatest value for different uses or soil conditions in Iowa are (1) alfalfa, (2) medium red clover, (3) mammoth red clover, (4) alsike clover, (5) white clover, (6) the biennial white and yellow sweet clovers, (7) hubam clover, (the annual white sweet clover) (8) Korean lespedeza, (9) dalea and (10) soybeans. A discussion of ...


Control Of Glyphosate-Resistant Common Ragweed (Ambrosia Artemisiifolia L.) In Glufosinate-Resistant Soybean [Glycine Max (L.) Merr], Ethann R. Barnes, Stevan Z. Knezevic, Peter H. Sikkema, John L. Lindquist, Amit J. Jhala 2017 University of Nebraska-Lincoln

Control Of Glyphosate-Resistant Common Ragweed (Ambrosia Artemisiifolia L.) In Glufosinate-Resistant Soybean [Glycine Max (L.) Merr], Ethann R. Barnes, Stevan Z. Knezevic, Peter H. Sikkema, John L. Lindquist, Amit J. Jhala

Agronomy & Horticulture -- Faculty Publications

Common ragweed emerges early in the season in Nebraska, USA and is competitive with soybean; therefore, preplant herbicides are important for effective control. Glyphosate has been used as a preplant control option; however, confirmation of glyphosate-resistant (GR) common ragweed in Nebraska necessitates evaluating other herbicide options. The objectives of this study were to (1) evaluate the efficacy of preplant (PP) herbicides followed by (fb) glufosinate alone or in tank-mixture with imazethapyr, acetochlor, or S-metolachlor applied post-emergence (POST) for control of GR common ragweed in glufosinate-resistant soybean; (2) their effect on common ragweed density, biomass, and soybean yield; and (3) the ...


A Production Method Of Valuing Land, W. G. Murray, H. R. Meldrum 2017 Iowa State College

A Production Method Of Valuing Land, W. G. Murray, H. R. Meldrum

Bulletin (Iowa Agricultural Experiment Station)

What is the value of a farm? One answer is the amount it will bring if sold. But let us assume a farmer wants to buy a farm. What can he afford to pay for it? A similar question faces the seller, anxious about what he should ask for his farm. For situations like these, valuation of the land on a productivity basis is helpful. Rightly used such a method can make farm valuations more precise and reliable. In addition to its use in determining the sale price of land, this method is well adapted for appraisals of land for ...


Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag 2017 Kansas State University

Seeding Rate For Dryland Wheat, A. Schlegel, J. D. Holman, L. Haag

Kansas Agricultural Experiment Station Research Reports

Four winter wheat varieties (PlainsGold Byrd, Limagrain T158, Syngenta TAM 111, and WestBred Winterhawk) were planted at five seeding rates (30, 45, 60, 75, and 90 lb/a) in the fall of 2014 and 2015 at Colby, Garden City, and Tribune, KS. The objective of the study was to identify appropriate seeding rates for dryland winter wheat in western Kansas. Averaged across varieties, a seeding rate of 60 lb/a seemed to be adequate at all locations in 2015. However, with higher yields in 2016, a higher seeding rate (75 lb/a) was beneficial. The wheat variety T158 was the ...


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