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Articles 1471 - 1500 of 1687

Full-Text Articles in Agricultural Science

Arkansas Cotton Variety Test 2003, Fred M. Bourland, S. B. Jackson, J. M. Hornbeck, F. E. Groves Apr 2004

Arkansas Cotton Variety Test 2003, Fred M. Bourland, S. B. Jackson, J. M. Hornbeck, F. E. Groves

Arkansas Agricultural Experiment Station Research Series

The primary aim 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 dealers establish marketing strategies and assists producers in choosing varieties to plant. In this way, the annual test facilitates the inclusion of new, improved genetic material in Arkansas cotton production.

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Establishing Effects Of Application Of Swine Manure On Crop Leaf Damage To Growing Crops, Charles Shapiro, University Of Nebraska-Lincoln Jan 2004

Establishing Effects Of Application Of Swine Manure On Crop Leaf Damage To Growing Crops, Charles Shapiro, University Of Nebraska-Lincoln

Department of Agronomy and Horticulture: Faculty Publications

Swine manure from a below barn storage facility was applied to growing corn and soybeans to determine phytotoxic effects. The manure had an electrical conductivity of around 20 mmhos/cm and was diluted for treatment at full, half, quarter and none. The manure mixtures were applied at a rate of 0.5 in/acre using a procedure that wet the foliage three times in a 15-minute time span. Manure mixtures were applied at V7 and V14 for corn and V3 and R1 for soybeans. Phytotoxic effects were shown at the high rate for both crops, but soybeans were killed at the early application …

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Seed Quality Qtl In A Prominent Soybean Population, D. L. Hyten Jr., V. R. Pantalone, C. E. Sams, A. M. Saxon, D. Landau-Ellis, T. R. Stefaniak, M. E. Schmidt Jan 2004

Seed Quality Qtl In A Prominent Soybean Population, D. L. Hyten Jr., V. R. Pantalone, C. E. Sams, A. M. Saxon, D. Landau-Ellis, T. R. Stefaniak, M. E. Schmidt

Department of Agronomy and Horticulture: Faculty Publications

Soybean [Glycine max (L.) Merr.] is a versatile crop due to its multitude of uses as a high protein meal and vegetable oil. Soybean seed traits such as seed protein and oil concentration and seed size are important quantitative traits. The objective of this study was to identify representative protein, oil, and seed size quantitative trait loci (QTL) in soybean. A recombinant inbred line (RIL) population consisting of 131 F6-derived lines was created from two prominent ancestors of North American soy-beans (‘Essex’ and ‘Williams’) and the RILs were grown in six environments. One hundred simple sequence repeat (SSR) markers …

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Arkansas Soybean Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge Jan 2004

Arkansas Soybean Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge

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.

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Using Multi-Spectral Imagery To Evaluate Corn Grown Under Nitrogen And Drought Stressed Conditions, Shannon L. Osborne, James S. Schepers, Mike R. Schlemmer Jan 2004

Using Multi-Spectral Imagery To Evaluate Corn Grown Under Nitrogen And Drought Stressed Conditions, Shannon L. Osborne, James S. Schepers, Mike R. Schlemmer

Department of Agronomy and Horticulture: Faculty Publications

The in-season estimation of crop stresses which have the potential of adversely affecting crop yield and/or quality could allow producers to make in-season management decisions to correct for the particular stress. A field study was conducted to evaluate the use of multispectral imagery for estimating corn (Zea mays L.) grain yield, in-season biomass and nitrogen (N) concentration under varying N and drought stresses. The experiment was a split-plot design with three replications using a factorial arrangement of treatments. Three irrigation (whole-plot) treatments included dry land, irrigation based on 0.5, and full evapotranspiration (ET). Sub-plot treatments included five N …

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Expression Of A Putative Flavonoid 3'-Hydroxylase In Sorghum Mesocotyls Synthesizing 3-Deoxyanthocyanidin Phytoalexins, Jayanand Boddu, Catherine Svabek, Rajandeep Sekhon, Amanda Gevens, Ralph L. Nicholson, A. Daniel Jones, Jeffrey F. Pedersen, David L. Gustine, Surinder Chopra Jan 2004

Expression Of A Putative Flavonoid 3'-Hydroxylase In Sorghum Mesocotyls Synthesizing 3-Deoxyanthocyanidin Phytoalexins, Jayanand Boddu, Catherine Svabek, Rajandeep Sekhon, Amanda Gevens, Ralph L. Nicholson, A. Daniel Jones, Jeffrey F. Pedersen, David L. Gustine, Surinder Chopra

Department of Agronomy and Horticulture: Faculty Publications

In sorghum, ingress of Cochliobolus heterostrophus stimulates the synthesis of 3-deoxyanthocyanidins that act as phytoalexins. Apigeninidin and luteolinidin are two major phytoalexins induced in the first 24 h after infection. In an attempt to understand genetic regulation of the biosynthesis of sorghum phytoalexins, we isolated a differentially expressed partial cDNA. Characterization and comparison showed that this cDNA sequence corresponds to a putative flavonoid 3’-hydroxylase. Full length sequence characterization allowed us to establish that the sorghum putative f3’h cDNA encodes a peptide of 517 amino acids that has domains conserved among cytochrome P450 proteins functioning in …

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Field Evaluation Of Herbicides On Vegetables, Small Fruit, And Ornamental Crops 2003, Ronald E. Talbert, Brian V. Ottis, Mayank S. Malik, Andrew T. Ellis Jan 2004

Field Evaluation Of Herbicides On Vegetables, Small Fruit, And Ornamental Crops 2003, Ronald E. Talbert, Brian V. Ottis, Mayank S. Malik, Andrew T. Ellis

Arkansas Agricultural Experiment Station Research Series

Herbicide evaluation studies on vegetables, small fruit, and ornamental crops were conducted in 2003 at the Arkansas Agricultural Experiment Station in Fayetteville, Ark., and the Vegetable Substation near Kibler, Ark., in an effort to evaluate new herbicides, herbicide mixtures, and their application timings for weed control efficacy and crop tolerance. Results of these studies, in part, provide useful information to producers, fellow researchers, the Crop Protection Industry, and the IR-4 Minor Crop Pest Management Program in the development of potential new herbicide uses in vegetable, fruit, and ornamental production.

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Molecular Mapping And Identification Of Soybean Fatty Acid Modifier Quantitative Trait Loci, D. L. Hyten Jr., Vincent R. Pantalone, Arnold M. Saxton, Michael E. Schmidt, Carl E. Sams Jan 2004

Molecular Mapping And Identification Of Soybean Fatty Acid Modifier Quantitative Trait Loci, D. L. Hyten Jr., Vincent R. Pantalone, Arnold M. Saxton, Michael E. Schmidt, Carl E. Sams

Department of Agronomy and Horticulture: Faculty Publications

Altering FA content in soybean [Glycine max (L.) Merr.] oil for improved functionality is a research goal of many soybean breeders. Several of the genes that alter palmitic, stearic, oleic, linoleic, and linolenic acids are modifier genes with small effects, causing these FA traits to act as quantitative traits. The objective of this study was to identify modifier FA quantitative trait loci (QTL) in soybean. A recombinant inbred line population was created from two prominent ancestors of currently avail-able U.S. cultivars (Essex and Williams) and grown in five environments. One hundred simple se-quence repeat markers spaced throughout the genome …

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Implementation Of A Mitochondrial Mutator, Sally Mackenzie, Ricardo Vilela Abdelnoor Jan 2004

Implementation Of A Mitochondrial Mutator, Sally Mackenzie, Ricardo Vilela Abdelnoor

Department of Agronomy and Horticulture: Faculty Publications

Plant MSH1 polynucleotides and polypeptides are described. Also described are methods for the use and modulation of such MSH1 polynucleotides and polypeptides.

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Predicting Phenological Development In Winter Wheat, Qingwu Xue, Albert Weiss, P. Stephen Baenziger Jan 2004

Predicting Phenological Development In Winter Wheat, Qingwu Xue, Albert Weiss, P. Stephen Baenziger

Department of Agronomy and Horticulture: Faculty Publications

Accurate prediction of phenological development is important in the winter wheat Triticum aestivum agroecosystem. From a practical perspective, applications of pesticides and fertilizers are carried out at specific phenological stages. In crop-simulation modeling, the prediction of yield components (kernel number and kernel weight) and wheat-grain yield relies on accurate prediction of phenology. In this study, a nonlinear multiplicative model by Wang & Engel (WE) for predicting phenological development in differing winter wheat cultivars was evaluated using data from a 3 yr field experiment. In the vegetative phase (emergence to anthesis) the daily development rate (r) was simulated based on the …

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Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Sixteen sweet corn cultivars including standard and modified supersweets were evaluated at the Pinney-Purdue Ag. Center, Wanatah, IN. Yield and ear quality characteristics are reported.

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Jalapeño And Banana Pepper Cultivar Trials In Northern Indiana, 2003, Mario R. Morales, Elizabeth T. Maynard Dec 2003

Jalapeño And Banana Pepper Cultivar Trials In Northern Indiana, 2003, Mario R. Morales, Elizabeth T. Maynard

Purdue Fruit and Vegetable Research Reports

This article reports on the evaluation of standard and new experimental cultivars of jalapeno and banana peppers. Yield, fruit size, and plant size are reported.

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Grape Tomato Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Grape Tomato Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Four grape tomato varieties were evaluated in a replicated trial at the Pinney-Purdue Agricultural Center in Wanatah, Indiana. A fifth grape variety and one cherry variety were observed in unreplicated plots. Yield, plant, and fruit characteristics are reported.

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Jalapeño Pepper Cultivar Observation In Northern Indiana, 2003, Mario R. Morales, Elizabeth Maynard Dec 2003

Jalapeño Pepper Cultivar Observation In Northern Indiana, 2003, Mario R. Morales, Elizabeth Maynard

Midwest Vegetable Trial Reports

This article reports on an observation trial of standard Jalapeño cultivars. Yield, fruit size, and plant size are reported.

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Pumpkin Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Pumpkin Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Pumpkin varieties and experimental lines were evaluated at the Kurtz Farm in Allen County, Indiana. Twenty-two jack-o-lantern types, 4 pie types, and 4 mini-pumpkins were included in the trial. Yield and fruit characteristics are reported.

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Muskmelon Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Muskmelon Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Muskmelon varieties were evaluated at Garwood Orchards in LaPorte County. Six experimental hybrids were compared to the cultivar Vienna. Yield and fruit characteristics are reported.

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Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Twenty-two sweet corn cultivars including homozygous se, heterozygous se, and mixed se and sh2 genetics were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN. Yield and ear quality characteristics are reported.

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Jalapeño And Banana Pepper Cultivar Trials In Northern Indiana, 2003, Mario R. Morales, Elizabeth T. Maynard Dec 2003

Jalapeño And Banana Pepper Cultivar Trials In Northern Indiana, 2003, Mario R. Morales, Elizabeth T. Maynard

Midwest Vegetable Trial Reports

This article reports on the evaluation of standard and new experimental cultivars of jalapeno and banana peppers. Yield, fruit size, and plant size are reported.

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Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Supersweet Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Sixteen sweet corn cultivars including standard and modified supersweets were evaluated at the Pinney-Purdue Ag. Center, Wanatah, IN. Yield and ear quality characteristics are reported.

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Muskmelon Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Muskmelon Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Muskmelon varieties were evaluated at Garwood Orchards in LaPorte County. Six experimental hybrids were compared to the cultivar Vienna. Yield and fruit characteristics are reported.

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Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Sugar-Enhanced Sweet Corn Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Twenty-two sweet corn cultivars including homozygous se, heterozygous se, and mixed se and sh2 genetics were evaluated at the Pinney-Purdue Ag Center, Wanatah, IN. Yield and ear quality characteristics are reported.

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Pumpkin Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Pumpkin Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

Pumpkin varieties and experimental lines were evaluated at the Kurtz Farm in Allen County, Indiana. Twenty-two jack-o-lantern types, 4 pie types, and 4 mini-pumpkins were included in the trial. Yield and fruit characteristics are reported.

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Jalapeño Pepper Cultivar Observation In Northern Indiana, 2003, Mario R. Morales, Elizabeth Maynard Dec 2003

Jalapeño Pepper Cultivar Observation In Northern Indiana, 2003, Mario R. Morales, Elizabeth Maynard

Purdue Fruit and Vegetable Research Reports

This article reports on an observation trial of standard Jalapeño cultivars. Yield, fruit size, and plant size are reported.

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Grape Tomato Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard Dec 2003

Grape Tomato Cultivar Evaluation For Northern Indiana, 2003, Elizabeth Maynard

Midwest Vegetable Trial Reports

Four grape tomato varieties were evaluated in a replicated trial at the Pinney-Purdue Agricultural Center in Wanatah, Indiana. A fifth grape variety and one cherry variety were observed in unreplicated plots. Yield, plant, and fruit characteristics are reported.

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Arkansas Corn And Grain Sorghum Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge Dec 2003

Arkansas Corn And Grain Sorghum Performance Tests 2003, D. G. Dombek, D. K. Ahrent, R. D. Bond, I. L. Eldridge

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.

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Summaries Of Arkansas Cotton Research 2002, Derrick M. Oosterhuis Oct 2003

Summaries Of Arkansas Cotton Research 2002, Derrick M. Oosterhuis

Arkansas Agricultural Experiment Station Research Series

The average yield in Arkansas in 2002 was 871 lb lint/acre from 920,000 harvested acres (960,000 planted) for a total of 1.67 million bales at a value of$336.5 million. This yield was second only to the record 877 lb lint/acre achieved in 1994. Last year's crop yield, and the five-year average, on a per acre basis are exceeded in the U.S. Cotton Belt only by California and Arizona. Cotton yields in Arkansas increased steadily during the eighties, but in the last decade yields have leveled off. Furthermore, the last five years have had extreme year-to-year variability in yields, which is …

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Horticultural Studies 2002, Michael R. Evans, Douglas E. Karcher Sep 2003

Horticultural Studies 2002, Michael R. Evans, Douglas E. Karcher

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Arkansas Agriculture Situation And Outlook 2003, Bruce L. Ahrendsen, Eric J. Wailes, Bruce L. Dixon, Michael Popp, Pat Manning, Tony E. Windham Sep 2003

Arkansas Agriculture Situation And Outlook 2003, Bruce L. Ahrendsen, Eric J. Wailes, Bruce L. Dixon, Michael Popp, Pat Manning, Tony E. Windham

Arkansas Agricultural Experiment Station Research Series

The purpose of this research series is to highlight the situation of Arkansas farmers and to offer an outlook for 2003. The research emphasizes the production, price, income, policy, financial, farmland value, and interest rate outlook for Arkansas farmers and considers the impact of the macro economy on agriculture. In addition, the advantages and disadvantages of biodiesel as an alternative to petroleum diesel are discussed.

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B.R. Wells Rice Research Studies 2002, R. J. Norman, J.-F. Meullenet Aug 2003

B.R. Wells Rice Research Studies 2002, R. J. Norman, J.-F. Meullenet

Arkansas Agricultural Experiment Station Research Series

Arkansas is the leading rice producing state in the U .S .. representing almost 46% of the total U .S. production and almost 47% of the total acres planted to rice . Rice cultural practices vary across the state and across the U.S. However, due to changing political, environmental, and economic times, the practices arc dynamic. This survey was initiated in 2002 to monitor how the changing times reflect the changes in the way Arkansas rice producers approach their livelihood. The survey was conducted by polling county Extension agents in each of the counties in Arkansas that produce rice. Questions …

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Arkansas Small-Grain Cultivar Performance Tests 2002-2003, J. T. Kelly, C. E. Parsons, R. K. Bacon Jul 2003

Arkansas Small-Grain Cultivar Performance Tests 2002-2003, J. T. Kelly, C. E. Parsons, 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.

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