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2010

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Articles 271 - 300 of 308

Full-Text Articles in Agriculture

2010 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2010

2010 Weed Science Research Report – Tan Section, Ndsu Weed Science, Dept. Of Plant Sciences

Plant Sciences Weed Science Reports

The Weed Science team at North Dakota State University conduct field research in the State of North Dakota. This specific document reports on field research conducted in 2010. It includes work on adjuvants and spray quality and the management of several weeds in North Dakota.

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The Effect Of Nitrogen And Phosphorus Fertilization On Yield, Some Fruit Characteristics, Hormone Concentrations, And Alternate Bearing In Pistachio, Nurdan Tuna Güneş, Yeşi̇m Okay, A. İlhami̇ Köksal, Mehmet Köroğlu Jan 2010

The Effect Of Nitrogen And Phosphorus Fertilization On Yield, Some Fruit Characteristics, Hormone Concentrations, And Alternate Bearing In Pistachio, Nurdan Tuna Güneş, Yeşi̇m Okay, A. İlhami̇ Köksal, Mehmet Köroğlu

Turkish Journal of Agriculture and Forestry

This research was carried out in order to determine the effects of nitrogen and phosphorus fertilization on yield, some fruit characteristics, hormone concentrations, and alternate bearing in pistachio (Pistacia vera L.) cv. 'Kırmızı' grafted on P. vera over 3 consecutive years. Nitrogen was applied at the rate of 0 (control), 800, 1000, and 1200 g tree^{-1}, and phosphorus was applied at the rate of 0 (control), 200, 400, and 600 g tree^{-1} into the soil. As a result, although yield mostly decreased and nut weight increased, especially in the 2^{nd} year ('off' year), considerable interactions among fertilizer rates were determined …

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Determining The Levels Of Genetic Variation Using Ssr Markers In Three Turkish Barley Materials Known As Tokak, Nejdet Kandemi̇r, Ahmet Yildirim, Rahi̇me Gündüz Jan 2010

Determining The Levels Of Genetic Variation Using Ssr Markers In Three Turkish Barley Materials Known As Tokak, Nejdet Kandemi̇r, Ahmet Yildirim, Rahi̇me Gündüz

Turkish Journal of Agriculture and Forestry

Genetic variations are the raw materials of plant breeding and have been increasingly narrowed due to various reasons. Landraces are good sources of genetic variation, but need to be characterized first. This study was conducted to determine the levels of genetic variation in 3 barley materials originated in Turkey, all known as Tokak. Of the 3 materials used, PI 470281 is a landrace and CIHO 10093 is a pure line. The third is Tokak 157/37, a major cultivar of Turkey considered to be a landrace. In order to detect the levels of polymorphism within and among these materials 30 SSR …

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Linear-Like Discrete-Time Fuzzy Control In The Regulation Of Irrigation Canals, Ömer Faruk Durdu Jan 2010

Linear-Like Discrete-Time Fuzzy Control In The Regulation Of Irrigation Canals, Ömer Faruk Durdu

Turkish Journal of Agriculture and Forestry

A linear-like discrete-time fuzzy controller was designed to control and stabilize a single-pool irrigation canal. Saint Venant equations for open-channel flow were linearized using the Taylor series and a finite-difference approximation of the original nonlinear partial differential equations. Using the linear optimal control theory, a traditional linear quadratic regulator (LQR) was first developed for an irrigation canal with a single-pool, and the results were observed. Then a linear-like global system representation of a discrete-time fuzzy system was proposed by viewing a discrete-time fuzzy system in a global concept and unifying the individual matrices into synthetic matrices. This linear-like representation aided …

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Allelopathic Potential Of Euphorbia Helioscopia L. Against Wheat (Triticum Aestivum L.), Chickpea (Cicer Arietinum L.) And Lentil (Lens Culinaris Medic.), Asif Tanveer, Aqeel Rehman, Muhammad Mansoor Javaid, Rana Nadeem Abbas, Muhammad Sibtain, Azraf Ul Haq Ahmad, Muhammad Sahid Ibin-I-Zamir, K. M. Chaudhary, A. Aziz Jan 2010

Allelopathic Potential Of Euphorbia Helioscopia L. Against Wheat (Triticum Aestivum L.), Chickpea (Cicer Arietinum L.) And Lentil (Lens Culinaris Medic.), Asif Tanveer, Aqeel Rehman, Muhammad Mansoor Javaid, Rana Nadeem Abbas, Muhammad Sibtain, Azraf Ul Haq Ahmad, Muhammad Sahid Ibin-I-Zamir, K. M. Chaudhary, A. Aziz

Turkish Journal of Agriculture and Forestry

Studies investigating the allelopathic effect of root, stem, leaf, and fruit water extracts and infested soil of Euphorbia helioscopia L. on the seed germination and seedling growth of wheat, chickpea, and lentil were conducted in a completely randomized design with 4 replications. Water extracts of root, stem, leaf, and fruit were prepared by soaking dried plant parts of E. helioscopia in water (1:20 w/v) for a period of 24 h. Seedling emergence, seedling vigor index, and total dry weight of wheat, chickpea, and lentil seedlings were significantly reduced when these crops were grown in soil taken from an E. helioscopia …

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Impact Of Irrigation Water Quality, Irrigation Systems, Irrigation Rates And Soil Amendments On Tomato Production In Sandy Calcareous Soil, Abdulrasoul M. Al-Omran, A. R. Al-Harbi, Mahmoud A. Wahb-Allah, Mahmoud Nadeem, Ali Al-Eter Jan 2010

Impact Of Irrigation Water Quality, Irrigation Systems, Irrigation Rates And Soil Amendments On Tomato Production In Sandy Calcareous Soil, Abdulrasoul M. Al-Omran, A. R. Al-Harbi, Mahmoud A. Wahb-Allah, Mahmoud Nadeem, Ali Al-Eter

Turkish Journal of Agriculture and Forestry

Low quality water for irrigation can impose a major environmental constraint to crop productivity. Effects of water quality, irrigation system, irrigation rates, and type of amendment on the yield and quality of tomato plants were investigated during the 2 growing seasons of 2005/2006 and 2006/2007. Two water quality treatments (fresh water with electrical conductivity (EC) of 0.86 dS m^{-1}, and saline water with EC of 3.6 dS m^{-1}), 2 drip irrigation systems (surface and subsurface), 3 irrigation rates (2, 4, and 6 L h^{-1}) and 3 amendment types (clay deposit, and organic matter and without amendment) were applied. The results …

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Evaluation Of Fertilizing Schemes For Direct-Seeding Rice Fields In Taihu Lake Basin, China, Yong Li, Lin Zhang Yang, Chao Wang Jan 2010

Evaluation Of Fertilizing Schemes For Direct-Seeding Rice Fields In Taihu Lake Basin, China, Yong Li, Lin Zhang Yang, Chao Wang

Turkish Journal of Agriculture and Forestry

Field experiments were performed to identify an effective fertilizing scheme for direct-seeding rice (DSR) fields in the Taihu Lake Basin in east China. Based on local traditions, 3 typical fertilizing schemes (FS-1, FS-2, and FS-3) were evaluated, in consideration of ensuring a certain rice yield and relatively low nitrogen (N) loss. The base, seedling, tillering, jointing, and panicle fertilizers for FS-1 were all 20% of 270 kg N ha^{-1}, those for FS-2 were 30%, 30%, 0%, 25%, and 15% of 270 kg N ha^{-1}, and 15%, 20%, 25%, 20%, and 20% of 220 kg N ha^{-1} for FS-3, respectively. The …

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Determination Of Gene Escape And Fruit Quality Characteristics In Transgenic Melon (Cucumis Melo L. Var. Inodorus), Yeşi̇m Yalçin Mendi̇, Nebahat Sari, Asi̇ye Akyildiz, İlknur Solmaz, Ceren Ünek, Okan Özkaya, Sedat Serçe Jan 2010

Determination Of Gene Escape And Fruit Quality Characteristics In Transgenic Melon (Cucumis Melo L. Var. Inodorus), Yeşi̇m Yalçin Mendi̇, Nebahat Sari, Asi̇ye Akyildiz, İlknur Solmaz, Ceren Ünek, Okan Özkaya, Sedat Serçe

Turkish Journal of Agriculture and Forestry

Gene escape and fruit quality characteristics of transgenic melons (Cucumis melo L. var inodorus cv. 'Kirkagac 637') resistant to zucchini yellow mosaic virus (ZYMV) and control plants were investigated under screenhouse conditions. No significant differences were observed between transgenic and transgenic × control genotypes, with regard to rind thickness, fruit cavity length, fruit cavity width, total soluble solids, pistil scar diameter, and peduncle length. Fruit characters, including fruit weight, fruit width, fruit length, fruit flesh thickness, and peduncle diameter were significantly different. These results indicate that transgenic × control genotypes had higher values than transgenic (T4 and T20) genotypes, regarding …

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The Effects Of Ethanol-Dissolved Propolis On The Storage Of Grapefruit Cv. Star Ruby, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk Çandir, Mustafa Kaplankiran, Emi̇ne Mi̇ne Soylu, Nuray Şahi̇nler, Azi̇z Gül Jan 2010

The Effects Of Ethanol-Dissolved Propolis On The Storage Of Grapefruit Cv. Star Ruby, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk Çandir, Mustafa Kaplankiran, Emi̇ne Mi̇ne Soylu, Nuray Şahi̇nler, Azi̇z Gül

Turkish Journal of Agriculture and Forestry

Propolis has a strong antimicrobial effect and limits the growth of microorganisms. This study was carried out to determine the effect of propolis on the storage life of Star Ruby grapefruit. Fruits were obtained from Mustafa Kemal University, Faculty of Agriculture, Dörtyol Experimental Research Station, Dörtyol, Hatay, Turkey. Fruits were dipped in ethanol-extracted propolis (EEP) in various concentrations (1%, 5%, and 10%) immediately after harvest and then stored at 8 °C and 90% relative humidity for 6 months. The effects of propolis on the incidence of physiological disorders and fungal decay, and some fruit quality characteristics (weight loss, fruit juice …

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Organic Materials: Sources Of Nitrogen In The Organic Production Of Lettuce, Maja Manojlovic, Ranko Cabilovski, Martina Bavec Jan 2010

Organic Materials: Sources Of Nitrogen In The Organic Production Of Lettuce, Maja Manojlovic, Ranko Cabilovski, Martina Bavec

Turkish Journal of Agriculture and Forestry

This paper presents the results of 2 experiments: an incubation experiment and a subsequent field experiment. An incubation experiment was set up in order to determine the mineralization potential of different organic materials (OMs) (well-rotted farmyard manure [FTM], guano [G], soybean seed [S], and forage pea seed [P]), the kinetics of mineral nitrogen (N) release, and the correlation between OM content and the quantity of mineralized N. The results of the incubation experiment were checked under field conditions in which different OMs were used as N sources for lettuce (Lactuca sativa L.). The highest mineralization rate constant k (0.127 day^{-1}) …

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Changes In Distribution Patterns Of Soil Penetration Resistance Within A Silage-Corn Field Following The Use Of Heavy Harvesting Equipments, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş Jan 2010

Changes In Distribution Patterns Of Soil Penetration Resistance Within A Silage-Corn Field Following The Use Of Heavy Harvesting Equipments, Ekrem Lütfi̇ Aksakal, Taşkin Öztaş

Turkish Journal of Agriculture and Forestry

Soil compaction caused by heavy wheeling reduces water infiltration, root development, and yield, and increases bulk density and soil strength. The objective of this study was to determine changes in spatial variability patterns of soil penetration resistance before and after using the silage machine in a corn-growing field. Soil penetration resistance was measured in a 100 × 400 m field with 10 m intervals just before and after harvesting. Measurements were taken from the 20 cm top layer on rows and inter-rows throughout each transect. The mean penetration resistance of 1353 measurements before and after harvesting was 2097 and 3116 …

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Tolerance Of Brown-Rot And Dry-Rot Fungi To Cca And Acq Wood Preservatives, Coşkun Köse, Sai̇p Nami̇ Kartal Jan 2010

Tolerance Of Brown-Rot And Dry-Rot Fungi To Cca And Acq Wood Preservatives, Coşkun Köse, Sai̇p Nami̇ Kartal

Turkish Journal of Agriculture and Forestry

Copper remains the primary biocide component used today to protect wood. Increased interest in the use of non-arsenic copper-based wood preservatives has also led to increased studies on copper-tolerant decay fungi. Oxalic acid production by brown-rot fungi is proposed as one mechanism of copper tolerance. This study evaluated oxalic acid production and copper losses from ACQ- and CCA-treated Pinus sylvestris L. and Populus × euramericana I 214 wood by brown-rot fungi: Postia placenta, Gloeophyllum trabeum, Tyromyces palustris, and 2 strains of Serpula lacrymans. There was no clear linear correlation among mass losses, oxalic acid production, or copper losses in most …

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Certain Physical And Mechanical Properties Of Medium Density Fiberboards Manufactured From Blends Of Corn (Zea Mays Indurata Sturt.) Stalks And Pine (Pinus Nigra) Wood, Mehmet Akgül, Cengi̇z Güler, Yalçin Çöpür Jan 2010

Certain Physical And Mechanical Properties Of Medium Density Fiberboards Manufactured From Blends Of Corn (Zea Mays Indurata Sturt.) Stalks And Pine (Pinus Nigra) Wood, Mehmet Akgül, Cengi̇z Güler, Yalçin Çöpür

Turkish Journal of Agriculture and Forestry

Corn stalk is a renewable natural resource that currently has limited industrial utilization. The objective of this study was to examine some chemical properties of corn stalk (holocellulose, \alpha-cellulose, lignin and ash content, alcohol-benzene, hot and cold water solubility, and solubility in dilute alkali [1% NaOH]) and to evaluate its suitability for medium-density fiberboard (MDF) production. Panels were produced using mixtures of corn stalk (Zea mays indurata Sturt.) and pine (Turkish Pinus nigra) fibers in various proportions (from 0% to 100%). The panels produced had density levels of 0.6, 0.7, and 0.8 g cm^{-3}. The physical and mechanical properties of …

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Effects Of Alternative Spray Programs And Various Combinations Of Green Pruning On Powdery Mildew [Uncinula Necator (Schw.) Burr.] In Karasakız (Kuntra) Grape Cultivar, İsmet Yildirim, Alper Dardeni̇z Jan 2010

Effects Of Alternative Spray Programs And Various Combinations Of Green Pruning On Powdery Mildew [Uncinula Necator (Schw.) Burr.] In Karasakız (Kuntra) Grape Cultivar, İsmet Yildirim, Alper Dardeni̇z

Turkish Journal of Agriculture and Forestry

The effects of alternative spray programs, NaHCO_3/K_2SiO_3 + sulphur, KH_2PO_4/di - 1 - p - menthone, and a conventional spray program, penconazole/sulphur, as well as various levels of shoot toppings (to the 1st, 3rd, and 5th buds) on powdery mildew disease [Uncinula necator (Schw.) Burr.] and grape quality were investigated in this study. The study was carried out on grape variety Karasakız (Vitis vinifera L.) during 2003 and 2004 growing seasons. The effectiveness of NaHCO_3/K_2SiO_3 + sulphur, KH_2PO_4/di - 1 - p - menthene alternate spray programs against powdery mildew was found as 74.8% and 70.7% on leaf and 65.7% …

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Plant Water Relations And Photosynthetic Activity In Three Tunisian Chickpea (Cicer Arietinum L.) Genotypes Subjected To Drought, Abdelmajid Krouma Jan 2010

Plant Water Relations And Photosynthetic Activity In Three Tunisian Chickpea (Cicer Arietinum L.) Genotypes Subjected To Drought, Abdelmajid Krouma

Turkish Journal of Agriculture and Forestry

Chickpea (Cicer arietinum L.) is an important food crop grown under rainfed conditions in Mediterranean regions in which drought is a major limiting factor for production. In these areas little attention is given to legumes, and efforts to identify drought-tolerant genotypes are primarily focused on major cereal crops. In the current study a greenhouse experiment was conducted to assess the effects of drought stress on plant growth, photosynthesis, and water relations in 3 Tunisian chickpea genotypes (Cicer arietinum L.). Drought was applied, and soil humidity was maintained at 30% of field capacity (stressed plants) or 100% of field capacity (control …

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Pruning Effect On Content Of Quercetin And Catechin In Berry Skins Of Cv. Blaufränkisch (Vitis Vinifera L.), Zoran Beslic, Slavica Todic, Vele Tesevic, Milka Jadranin, Miroslav Novakovic, Dejan Tesic Jan 2010

Pruning Effect On Content Of Quercetin And Catechin In Berry Skins Of Cv. Blaufränkisch (Vitis Vinifera L.), Zoran Beslic, Slavica Todic, Vele Tesevic, Milka Jadranin, Miroslav Novakovic, Dejan Tesic

Turkish Journal of Agriculture and Forestry

The effect of pruning severity on quercetin and catechin content in berry skins of cv. Blaufränkisch (Vitis vinifera L.) was studied over 3 years. Different crop levels and canopy structures were obtained by retaining 8, 16, and 24 nodes per vine at pruning. Canopy density, which is proportionate to the shoot number per canopy volume, directly affects the intensity of photosynthetically active radiation (PAR). The quercetin content has been shown to be highly dependent on the light exposure of the berries in which it accumulates. An increase in node number linearly decreased skin catechin, and it is suggested that the …

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Effects Of Cultural Practices On Weed Flora In Virginia (Flue-Cured) Organic Tobacco (Nicotiana Tabacum L.): Green Manure And Irrigation Systems, Anestis Karkanis, Dimitrios Bilalis, Aspasia Efthimiadou, Panagiotis Efthimiadis Jan 2010

Effects Of Cultural Practices On Weed Flora In Virginia (Flue-Cured) Organic Tobacco (Nicotiana Tabacum L.): Green Manure And Irrigation Systems, Anestis Karkanis, Dimitrios Bilalis, Aspasia Efthimiadou, Panagiotis Efthimiadis

Turkish Journal of Agriculture and Forestry

Organic tobacco is a new industrial crop. Field experiments were conducted, during 2005-2006, to determine the effects of irrigation system and green manure on weed flora in organic tobacco crops (Nicotiana tabacum cv. NC 71). The experiments were designed as a split plot design with 4 replicates, 2 main plots (drip and sprinkler irrigation), and 3 sub-plots (vetch and red clover as green manure, and control). The greatest number and dry weight of weeds was observed in sprinkler irrigation. Our results indicate that weed distribution under drip and sprinkler irrigation is related not only to the surface soil water content …

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Pathogen Reduction Effects Of Solar Drying And Soil Application In Sewage Sludge, Nurtaç Öğleni̇, Sai̇m Özdemi̇r Jan 2010

Pathogen Reduction Effects Of Solar Drying And Soil Application In Sewage Sludge, Nurtaç Öğleni̇, Sai̇m Özdemi̇r

Turkish Journal of Agriculture and Forestry

The responses of sludge faecal coliforms, Salmonella, and Ascaris lumbricoides to heat drying, solar dehydration, and inactivation in soil are examined in this study. The presence of Salmonella in raw sludge cake after treatment was low, and absent for most of the cases. Likewise, the viable Ascaris eggs were not determined because of absent or low prevalence. Faecal coliforms, on the other hand, drastically decreased from 4.2 × 10^7 MPN g^{-1} Dry Solid (DS) to absence by heat drying. Faecal coliform numbers in solar and non-solar drying treatments were not declined below 1.0 × 10^3 MPN g^{-1} after drying to …

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Effect Of Foliar Applied Kinetin And Indole Acetic Acid On Maize Plants Grown Under Saline Conditions, Cengi̇z Kaya, Ati̇lla Levent Tuna, Abdulkadi̇r Mustafa Okant Jan 2010

Effect Of Foliar Applied Kinetin And Indole Acetic Acid On Maize Plants Grown Under Saline Conditions, Cengi̇z Kaya, Ati̇lla Levent Tuna, Abdulkadi̇r Mustafa Okant

Turkish Journal of Agriculture and Forestry

This study examined the effects of kinetin (KIN) and indoleacetic acid (IAA) sprayed on the leaves of salinity-stressed maize (Zea mays L. cv., DK 647 F1) plants grown in field conditions. Salt stress was created by adding 100 mM NaCl to the irrigation water through a drip irrigation system during the irrigation schedule. Kinetin (KIN), indole acetic acid (IAA), and their combinations were sprayed foliarly. Salt stress (S) reduced the total dry matter, grain yield, chlorophyll content, and relative water content (RWC), but increased electrolyte leakage and proline accumulation in the maize plants. Foliar applications of both KIN and IAA …

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Distribution Of Natural Radionuclides In Anthrosol-Type Soil, Ivana Vukasinovic, Aleksandar Djordjevic, Milos Rajkovic, Dragana Todorovic, Vladimir Pavlovic Jan 2010

Distribution Of Natural Radionuclides In Anthrosol-Type Soil, Ivana Vukasinovic, Aleksandar Djordjevic, Milos Rajkovic, Dragana Todorovic, Vladimir Pavlovic

Turkish Journal of Agriculture and Forestry

Taking into account the importance of distribution and transfer of radionuclides in the soil-water-plant system, especially in agricultural fields, in this study, natural radionuclide determination in regosol-type soil was performed. The correlations between main soil properties and the contents of natural isotopes ^{238}U, ^{226}Ra, ^{232}Th, and ^{40}K in agricultural soil and their distribution through the soil depth was studied. For determination of natural radionuclide activity concentration, we used the CANBERRA HPGe detector, applying the gamma spectrometry method. The investigation was performed on an experimental peach tree field characterized by a anthrosol type of soil, derived from the chernozem type of …

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An Inventory And Condition Survey Of The Western Australian Part Of The Nullarbor Region, Peter-Jon A. Waddell, A K. Gardner, P Hennig Jan 2010

An Inventory And Condition Survey Of The Western Australian Part Of The Nullarbor Region, Peter-Jon A. Waddell, A K. Gardner, P Hennig

Technical Bulletins

The inventory and condition survey of the Western Australian part of the Nullarbor region, undertaken by the Department of Agriculture and Food, Western Australia (DAFWA) between 2005 and 2007, describes and maps the natural resources of the region. This survey report provides a baseline record of the existence and condition of the area's natural resources, to assist with the planning and implementation of land management practices. The report identified and described the condition of soils, landforms, vegetation, habitat, ecosystems, and declared plants and animals. It also assessed the impact of pastoralism and made land management recommendations. The Nullarbor region has …

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Incentives, Risk, And The Role Of Private Investments In Louisiana Coastal Wetland Restoration, Cheikhna Ould Dedah Jan 2010

Incentives, Risk, And The Role Of Private Investments In Louisiana Coastal Wetland Restoration, Cheikhna Ould Dedah

LSU Doctoral Dissertations

The coast of Louisiana, with more than three million wetland acres, accounts for about 40 percent of the nation’s total wetlands. Louisiana is estimated to have lost more than 1.2 million acres of its coastal wetland in the last century. Although 75% of Louisiana’s coastal wetlands are privately owned, little has been done to encourage private landowners to undertake wetland restoration projects. This dissertation examines the factors that influence the decisions of the landowners to undertake wetland restoration projects. We develop a theoretical framework for understanding the landowner’s decision-making process in the presence of high uncertainty and increasing restoration costs. …

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Three Essays On The Role Of Amenities As An Economic Development Strategy, Junpyo Hong Jan 2010

Three Essays On The Role Of Amenities As An Economic Development Strategy, Junpyo Hong

LSU Doctoral Dissertations

It is well known that an amenity is a key driving engine to regional economic growth. However, the site-specific nature of an amenity can characterize them as public goods. Due to this characteristic, local governments have difficulty optimally supplying amenities. This dissertation tries to find relationships between an amenity and economic growth. Three empirical papers comprise the original research in this dissertation. The findings of the meta-analysis in the first essay suggest little methodological diversity exists among researchers linking amenities to economic growth., I do find that employment growth is more likely related to man-made amenities even in research on …

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Stochastic Trends In Crop Yield Density Estimation, David I. Maradiaga Jan 2010

Stochastic Trends In Crop Yield Density Estimation, David I. Maradiaga

LSU Master's Theses

The search for improved methods of estimating crop yield density functions has been a theme of recurrent research interest in agricultural economics. Crop yield density functions are the statistical instrument that generates probability estimates of yield risk, and risk is an important decision variable in production agriculture. Recent research in crop yield density estimation suggests that yield probability estimates can be sensitive to the way yield data are filtered, and if true, then the search for an “adequate filter” is warranted. Such a quest is pursued in this study. It is proposed that unit-root tests can be used to identify …

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Adoption Of Breeding Technologies In The U.S. Dairy Industry And Their Influences On Farm Profitability, Aditya Raj Khanal Jan 2010

Adoption Of Breeding Technologies In The U.S. Dairy Industry And Their Influences On Farm Profitability, Aditya Raj Khanal

LSU Master's Theses

Current trends in the U. S. dairy industry show an increase in milk cows per farm and milk production per cow, though the total number of milk cows in the industry is declining. This increase in productivity is attributed to advancements and adoption of modern dairy technologies. Breeding technologies are one of the important components of this structural change. This study analyzed the factors affecting the adoption of modern breeding technologies such as artificial insemination, embryo transplants, and sexed semen, and the impact of these technologies on farm productivity and profitability. Results of a bivariate probit model with selection showed …

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Cellulosic Ethanol In Louisiana: A Three Part Economic Analysis Of Feedstocks, Pricing Strategies And Location Strategies, Tyler B. Mark Jan 2010

Cellulosic Ethanol In Louisiana: A Three Part Economic Analysis Of Feedstocks, Pricing Strategies And Location Strategies, Tyler B. Mark

LSU Doctoral Dissertations

The development of an efficient biomass supply chain is pivotal for the cellulosic ethanol industry. The Louisiana Sugarcane Belt, and energy cane are the focus of this study. From both the producer and processor perspectives, cost of production, competitiveness of cellulosic ethanol, biomass pricing, changes in crop mix, and the optimal location for cellulosic ethanol processing facilities are the critical factors evaluated. Educating potential energy cane producers on production costs and agronomic practices is the first step in the biomass supply chain. This study finds that for energy cane producers to breakeven, processors need to pay producers at least $30 …

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Determination Of The Economic Optimal Cycle Length For Major Sugarcane (Saccharum Spp.) Varieties In Louisiana, Juan Steer Nunes Jan 2010

Determination Of The Economic Optimal Cycle Length For Major Sugarcane (Saccharum Spp.) Varieties In Louisiana, Juan Steer Nunes

LSU Master's Theses

The general objective of the study was to determine the economically optimal crop cycle length for major sugarcane varieties currently being produced in Louisiana. The specific objectives of the project included the specification of the mathematical acreage relationships which directly impact the production of a vegetatively propagated perennial crop in a whole farm context; the development of producer decision rules to be used to determine breakeven sugar levels on third stubble sugarcane crops for major varieties in the state; the evaluation of the impact of changes in production factors on developed crop replacement rules; and the optimal cycle length for …

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Analysis Of Media Agenda-Setting Effect On Consumer Confidence In The Safety Of The U.S. Food System Across Consumer Segments, Abhishek Bhagwat Bharad Jan 2010

Analysis Of Media Agenda-Setting Effect On Consumer Confidence In The Safety Of The U.S. Food System Across Consumer Segments, Abhishek Bhagwat Bharad

LSU Master's Theses

Recent food recalls and food scares in the United States have increased consumers’ risk perceptions about food borne illness and decreased their confidence in the safety of the U.S. food supply. Results from a continuous tracking of consumer confidence and media coverage of food safety events over a 67 week period between May 2008 and August 2009 are reported in the study. Factor analysis is performed on consumer characteristic statements to identify seven factors. Factor scores for these seven factors are used as inputs in a consumer segmentation procedure. A two step segmentation approach, hierarchical cluster analysis followed by partition …

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An Economic Analysis Of Cover Crops In Corn-Dominated Production Systems, Sukirti Nepal Jan 2010

An Economic Analysis Of Cover Crops In Corn-Dominated Production Systems, Sukirti Nepal

LSU Master's Theses

A survey data by Singer et al. (2007) was used to study the factors affecting the adoption of cover crops by the producers at the Corn Belt area of the United States. Data was collected from four states: Illinois, Indiana, Iowa, and Minnesota. Two binomial logit models were used for the econometric analysis. The first logit model was used to observe the factors affecting the adoption of cover crops by the producers. The second logit model was used to analyze the factors affecting the adoption of cover crops by producers in recent years, specifically, in past five years. The result …

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Value Of Clearfield Rice: An Agronomic And Economic Approach, Tyler Paul Carlson Jan 2010

Value Of Clearfield Rice: An Agronomic And Economic Approach, Tyler Paul Carlson

LSU Master's Theses

Field studies were conducted in Crowley, Louisiana and Stoneville, Mississippi in drill seeded rice to evaluate weed control, yield, and economical returns with imazethapyr programs. Red rice (Oryza sativa) and barnyardgrass (Echinochloa crus-galli) was evaluated with imazethapyr applied alone at various rates and application timings. Imazethapyr, averaged across rate, controlled red rice 89% and barnyardgrass 90% when the initial application of imazethapyr was applied at emergence followed by (fb) a second application of imazethapyr two weeks after the initial application. While imazethapyr, averaged across timing, showed no differences for red rice and barnyardgrass control. Yield and economical returns were maximized …

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