Agricultural Science Commons^™

On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2008, Elizabeth Maynard, Butch Zandstra, Dan Egel

Midwest Vegetable Trial Reports

"Bacterial spot of tomatoes (Xanthomonas campestris pv. vesicatoria) causes lesions on leaves, stems and fruit. Under conditions of hot, humid, rainy weather, defoliation can result in a loss of yield. In addition, lesions on fruit result in a direct loss of marketability. This disease is managed primarily with applications of fixed copper bactericides, crop rotations, greenhouse sanitation, and healthy seed/transplants. Even in properly managed commercial fields, however, bacterial spot can cause yield losses. Although there are no varieties with complete resistance to bacterial spot, we report here the results of an on-farm trial that indicates some varieties may have partial …

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2008, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"Indiana growers harvested sweet corn for fresh market sales from 5,400 acres in 2007, according to the Indiana Agricultural Statistics Service. Average yield was 85 cwt/A (202 crates/A) and the crop had a total value of $10.5 million. Sweet corn fields are located throughout the state. In northern Indiana, bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size, appearance, and agronomic characteristics. This paper reports on 12 sugar enhanced and synergistic sweet corn cultivars that were evaluated at the Pinney-Purdue Agricultural Center …

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2008, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"Indiana growers harvested sweet corn for fresh market sales from 5,400 acres in 2007, according to the Indiana Agricultural Statistics Service. Average yield was 85 cwt/A (202 crates/A) and the crop had a total value of $10.5 million. Sweet corn fields are located throughout the state. In northern Indiana, bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size, appearance, and agronomic characteristics. This paper reports on 15 sweet corn cultivars with sh2 endosperm, including varieties described as supersweet and augmented supersweet, that …

Bulked Segregant Analysis Using The Goldengate Assay To Locate The Rpp3 Locus That Confers Resistance To Soybean Rust In Soybean, D. L. Hyten, James R. Smith, Reid D. Frederick, Mark L. Tucker, Qijian Song, P. B. Cregan

Department of Agronomy and Horticulture: Faculty Publications

Few resistance loci to soybean rust (SBR), caused by Phakopsora pachyrhizi Syd., have been genetically mapped and linked to molecular markers that can be used for marker assisted selection. New technologies are available for single nucleotide polymorphism (SNP) genotyping that can be used to rapidly map traits controlled by single loci such as resistance to SBR. Our objective was to demonstrate that the highthroughput SNP genotyping method known as the GoldenGate assay can be used to perform bulked segregant analysis (BSA) to fi nd candidate regions to facilitate effi cient mapping of a dominant resistant locus to SBR designated Rpp3 …

Mapping And Confirmation Of A New Allele At Rpp1 From Soybean Pi 594538a Conferring Rb Lesion–Type Resistance To Soybean Rust, Nanda Chakraborty, Joe Curley, Reid D. Frederick, D. L. Hyten, Randall L. Nelson, Glen L. Hartman, Brian W. Diers

Department of Agronomy and Horticulture: Faculty Publications

Soybean rust, caused by Phakopsora pachyrhizi (H. Sydow & Sydow), is a destructive soybean [Glycine max (L.) Merr.] disease and identification of new resistance genes is essential for effective rust management. Our research objectives were to map and confirm the location of resistance gene(s) in PI 594538A using a population of 98 F_3:4 lines from across between PI 594538A (reddish-brown [RB] lesions) and the susceptible cultivar Loda (tan [TAN] lesions). The lines were inoculated with the P. pachyrhizi isolate ZM01-1 from Zimbabwe. The RB resistance in PI 594538A mapped on linkage group G as a single dominant gene. …

Agroecology As A Science, A Movement And A Practice: A Review, A. Wezel, S. Bellon, T. Doré, Charles A. Francis, D. Vallod, C. David

Department of Agronomy and Horticulture: Faculty Publications

Agroecology involves various approaches to solve actual challenges of agricultural production. Though agroecology initially dealt primarily with crop production and protection aspects, in recent decades new dimensions such as environmental, social, economic, ethical and development issues are becoming relevant. Today, the term ‘agroecology’ means either a scientific discipline, agricultural practice, or political or social movement. Here we study the different meanings of agroecology. For that we analyse the historical development of agroecology. We present examples from USA, Brazil, Germany, and France. We study and discuss the evolution of different meanings agroecology. The use of the term agroecology can be traced …

Detection And Validation Of Single Feature Polymorphisms Using Rna Expression Data From A Rice Genome Array, Sung-Hyun Kim, Prasanna R. Bhat, Xinping Cui, Harkamal Walia, Jin Xu, Steve Wanamaker, Abdelbagi M. Ismail, Clyde Wilson, Timothy J. Close

Department of Agronomy and Horticulture: Faculty Publications

Background: A large number of genetic variations have been identified in rice. Such variations must in many cases control phenotypic differences in abiotic stress tolerance and other traits. A single feature polymorphism (SFP) is an oligonucleotide array-based polymorphism which can be used for identification of SNPs or insertion/deletions (INDELs) for high throughput genotyping and high density mapping. Here we applied SFP markers to a lingering question about the source of salt tolerance in a particular rice recombinant inbred line (RIL) derived from a salt tolerant and salt sensitive parent. Results: Expression data obtained by hybridizing RNA to an oligonucleotide array …

Antibiotic Use In Animal Production: Environmental Concerns, Teshome H. Regassa, Richard K. Koelsch, Charles S. Wortmann, Richard F. Randle, Akwasi A. Abunyewa

Department of Agronomy and Horticulture: Faculty Publications

Introduction

Antibiotic1 use in animal production has led to improved feed use efficiency and increased growth rates. In turn, these resulted in reduced food production costs and reduced excrement of manure nutrients which may cause pollution problems.

On the other hand, antibiotic use leads to antibiotic resistance and a possible reduction in effectiveness of treatment options for both animals and humans. This publication addresses these issues.

Disease-causing microorganisms2, including bacteria,are the most diverse and numerous organisms on earth. Diverse in their habitat, environmental adaptation, and mechanisms of reproduction, they have short generations with high multiplication rates. Such characteristics help develop …

Arkansas Soybean Performance Tests 2008, D. G. Dombek, R. D. Bond, I. L. Eldridge, R. M. Pryor

Arkansas Agricultural Experiment Station Research Series

Soybean cultivar performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies developing cultivars and/or marketing seed within the state, and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for soybean producers

A High-Oleic-Acid And Low-Palmitic-Acid Soybean: Agronomic Performance And Evaluation As A Feedstock For Biodiesel, George L. Graef, Bradley J. Lavallee, Patrick Tenopir, Mustafa Tat, Bruce Schweiger, Anthony J. Kinney, Jon H. Van Gerpen, Thomas E. Clemente

Department of Agronomy and Horticulture: Faculty Publications

Phenotypic characterization of soybean event 335-13, which possesses oil with an increased oleic acid content (> 85%) and reduced palmitic acid content (< 5%), was conducted across multiple environments during 2004 and 2005. Under these conditions, the stability of the novel fatty acid profile of the oil was not influenced by environment. Importantly, the novel soybean event 335-13 was not compromised in yield in both irrigated and non-irrigated production schemes. Moreover, seed characteristics, including total oil and protein, as well as amino acid profile, were not altered as a result of the large shift in the fatty acid profile. The novel oil trait was inherited in a simple Mendelian fashion. The event 335-13 was also evaluated as a feedstock for biodiesel. Extruded oil from event 335-13 produced a biodiesel with improved cold flow and enhanced oxidative stability, two critical fuel parameters that can limit the utility of this renewable transportation fuel.

Arkansas Corn And Grain Sorghum Performance Tests 2008, D. G. Dombek, R. D. Bond, I. L. Eldridge, R. M. Pryor

Arkansas Agricultural Experiment Station Research Series

Corn and grain sorghum performance tests are conducted each year in Arkansas by the University of Arkansas Division of Agriculture. The tests provide information to companies marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating recommendations for producers.

Vegetable Exhibits At Fairs And Shows, John Wesley, Maggie Wolf

All Current Publications

This publication gives tips on how to choose the best produce for vegetable exhibits and what the judges are looking for in the displays.

Pomegranates - New Woolbelt Opportunities, Department Of Agriculture And Food, Western Australia

Horticulture published reports

The capture of fresh surface water has the potential to open up areas of the 'woolbelt' of Western Australia to intensive agricultural industries.

In 2005-06 the Department of Agriculture and Food (DAFWA) investigated surface run-off in the medium rainfall zone (500-825 mm) of south-western Australia. It aimed to identify areas with sufficient freshwater resources and suitable land for intensive production.

The scoping study, based on broad scale modelling and land-soil capability assessment, found that there was some potential to develop large reliable water supplies to support perennial horticulture.

Summaries Of Arkansas Cotton Research 2007, Derrick M. Oosterhuis

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Arkansas Small-Grain Cultivar Performance Tests 2007-2008, J. T. Kelly, M. J. Emerson, R. K. Bacon

Arkansas Agricultural Experiment Station Research Series

Small-grain cultivar performance tests are conducted each year in Arkansas by the Arkansas Agricultural Experiment Station, Department of Crop, Soil, and Environmental Sciences. The tests provide information to companies developing cultivars and/or marketing seed within the state and aid the Arkansas Cooperative Extension Service in formulating cultivar recommendations for smallgrain producers

B.R. Wells Rice Research Studies 2007, R. J. Norman, J. F. Meullenet, K. A.K. Moldenhauer

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Adding Value To Swine Manure Through Accurate Prediction Of Organic Nitrogen Availability, Charles S. Wortman, Charles Shapiro, Aaron Nygren

Department of Agronomy and Horticulture: Faculty Publications

Animal manure contains organic and inorganic nitrogen. The inorganic N, which is mostly ammonium-N but nitrate-N can be significant in composted manure, is typically considered to be 100% plant available if there are not significant losses, especially due to volatilization of ammonia-N. The availability of organic N, which is mostly from undigested and partially digested plant material needs to be mineralized to become plant available, is less predictable. Field research was conducted in eastern Nebraska to improve the basis for estimating organic N availability from injected or incorporated swine manure and from surface applied composted and stockpiled FM. The factors …

Arkansas Turfgrass Report 2007, Michael Richardson, Douglas Karcher, Aaron Patton

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

Arkansas Cotton Variety Test 2007, Fred M. Bourland, A. B. Beach, J. M. Hornbeck, A. J. Hood

Arkansas Agricultural Experiment Station Research Series

The primary goal of the Arkansas Cotton Variety Test is to provide unbiased data regarding the agronomic performance of cotton varieties and advanced breeding lines in the major cotton-growing areas of Arkansas. This information helps seed companies establish marketing strategies and assists producers in choosing varieties to plant.

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2007, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2006 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In northern Indiana, bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size, appearance, and agronomic characteristics. This paper reports on 11 sugar enhanced and synergistic sweet corn cultivars that were evaluated at the Pinney-Purdue Agricultural Center in Wanatah, Indiana."

Pumpkin Cultivar Observation Trial, Indiana 2007, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"Pumpkins for decorative use are grown on more than 4,000 acres in Indiana. Combined acreage in Indiana, Michigan, Illinois, and Ohio represents about a quarter of pumpkins grown for decorative use in the United States. Successful pumpkin production requires the use of cultivars that yield well and produce pumpkins of the size, shape, color, and quality demanded by the market. There is keen interest in cultivars that also show resistance to powdery mildew. This trial was conducted to observe the performance of jack-o-lantern, pie, and mini-pumpkin cultivars in northern Indiana."

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2007, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2006 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In northern Indiana, bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size, appearance, and agronomic characteristics. This paper reports on 12 sh2 sweet corn entries that were evaluated at the Pinney-Purdue Agricultural Center in Wanatah, Indiana.

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2007, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

"The Indiana Agricultural Statistics Service reported sweet corn for fresh market sales was harvested from 5,200 acres in Indiana in 2006 and had a total value of $7.6 million. Sweet corn fields are located throughout the state. In northern Indiana, bicolor corn is most commonly grown. Varieties with improved eating quality are of interest to both producers and consumers. Producers are also interested in yield, ear size, appearance, and agronomic characteristics. This paper reports on 11 sugar enhanced and synergistic sweet corn cultivars that were evaluated at the Pinney-Purdue Agricultural Center in Wanatah, Indiana."

Pumpkin Cultivar Observation Trial, Indiana 2007, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

"Pumpkins for decorative use are grown on more than 4,000 acres in Indiana. Combined acreage in Indiana, Michigan, Illinois, and Ohio represents about a quarter of pumpkins grown for decorative use in the United States. Successful pumpkin production requires the use of cultivars that yield well and produce pumpkins of the size, shape, color, and quality demanded by the market. There is keen interest in cultivars that also show resistance to powdery mildew. This trial was conducted to observe the performance of jack-o-lantern, pie, and mini-pumpkin cultivars in northern Indiana."

On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2007, Dan Egel, Butch Zandstra, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

"Bacterial spot of tomatoes (Xanthomonas campestris pv. vesicatoria) causes lesions on leaves, stems, and fruit. Under hot, humid, rainy conditions, defoliation can result in a loss of yield. In addition, lesions on fruit result in a direct loss of marketability. This disease is managed primarily with applications of fixed copper bactericides, crop rotations, greenhouse sanitation, and healthy seed/transplants. Even in properly managed commercial fields, however, bacterial spot can cause yield losses. Although there are no varieties with complete resistance to bacterial spot, we report here the results of an on-farm trial that indicate some varieties may have partial resistance."

Sweet Corn Population Effects On Yield And Ear Quality, 2007, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

"Current recommendations for fresh market sweet corn suggest row spacing of 30 to 40 inches and in-row spacing of 8 to 10 inches for early varieties and 9 to 12 inches for late varieties. This corresponds to populations from 13,068 to 26,136 plants per acre. Variety trials at Pinney-Purdue Agricultural Center have been planted at row spacings of 30 or 36 inches and populations of 20,328 plants per acre. Some cultivars may perform well at higher populations. This trial was conducted to evaluate yield and ear characteristics of two cultivars at populations up to 50% higher than normally used in …

Weed Control In No-Till Pumpkins, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"No-till production systems for pumpkins are of interest to Midwest producers, but achieving acceptable weed control without cultivation can be difficult. Research was conducted in Wanatah, Indiana in 2007 to evaluate postemergence weed control options for pumpkins no-till planted into a fall-seeded, spring-killed winter wheat cover crop. Weeds in no-till pumpkins were controlled reasonably well with a preemergence herbicide (Strategy®) followed by a hooded sprayer, row-middle application of a nonselective, nonresidual herbicide (glyphosate). Weed control, yield, and fruit size with this treatment were comparable to conventional tillage with a preemergence herbicide (Strategy®) and one cultivation. Hand weeding could be substituted …

Sweet Corn Population Effects On Yield And Ear Quality, 2007, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"Current recommendations for fresh market sweet corn suggest row spacing of 30 to 40 inches and in-row spacing of 8 to 10 inches for early varieties and 9 to 12 inches for late varieties. This corresponds to populations from 13,068 to 26,136 plants per acre. Variety trials at Pinney-Purdue Agricultural Center have been planted at row spacings of 30 or 36 inches and populations of 20,328 plants per acre. Some cultivars may perform well at higher populations. This trial was conducted to evaluate yield and ear characteristics of two cultivars at populations up to 50% higher than normally used in …

On-Farm Evaluation Of Tomato Cultivars For Disease Resistance, 2007, Dan Egel, Butch Zandstra, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

"Bacterial spot of tomatoes (Xanthomonas campestris pv. vesicatoria) causes lesions on leaves, stems, and fruit. Under hot, humid, rainy conditions, defoliation can result in a loss of yield. In addition, lesions on fruit result in a direct loss of marketability. This disease is managed primarily with applications of fixed copper bactericides, crop rotations, greenhouse sanitation, and healthy seed/transplants. Even in properly managed commercial fields, however, bacterial spot can cause yield losses. Although there are no varieties with complete resistance to bacterial spot, we report here the results of an on-farm trial that indicate some varieties may have partial resistance."

Weed Control In No-Till Pumpkins, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

"No-till production systems for pumpkins are of interest to Midwest producers, but achieving acceptable weed control without cultivation can be difficult. Research was conducted in Wanatah, Indiana in 2007 to evaluate postemergence weed control options for pumpkins no-till planted into a fall-seeded, spring-killed winter wheat cover crop. Weeds in no-till pumpkins were controlled reasonably well with a preemergence herbicide (Strategy®) followed by a hooded sprayer, row-middle application of a nonselective, nonresidual herbicide (glyphosate). Weed control, yield, and fruit size with this treatment were comparable to conventional tillage with a preemergence herbicide (Strategy®) and one cultivation. Hand weeding could be substituted …