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2004

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Articles 271 - 300 of 311

Full-Text Articles in Agriculture

In Vitro Studies On Some Natural Beverages As Botanical Pesticides Against Erwinia Amylovora And Curtobacterium Flaccumfaciensis Subsp. Poinsettiae, Mehmet Nuri̇ Nas Jan 2004

In Vitro Studies On Some Natural Beverages As Botanical Pesticides Against Erwinia Amylovora And Curtobacterium Flaccumfaciensis Subsp. Poinsettiae, Mehmet Nuri̇ Nas

Turkish Journal of Agriculture and Forestry

Several tannin-rich beverages were tested for their antibacterial activity against 2 important phytopathogenic bacteria, Erwinia amylovora and Curtobacterium flacumfaciensis subsp. poinsettiae. Black tea (9.5, 19 and 38 g l^{-1}), green tea (9.5, 19 and 38 g l^{-1}) and tannic acid (0.2, 0.4 and 0.8 g l^{-1}) inhibited the growth of E. amylovora and C. f. subsp. poinsettiae. Coffee (8.75, 17.5 and 35 g l^{-1}) and cocoa (8.75, 17.5 and 35 g l^{-1}) did not display any inhibitory effect on the growth of bacterial cultures. The numbers of colony forming units (CFUs) of E. amylovora in the presence of black tea, …

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Potassium Potential Of The Soils Of The Gevaş Region In Eastern Anatolia, Keri̇m Mesut Çi̇mri̇n, Emrah Akça, Muzaffer Şenol, Gökhan Büyük, Seli̇m Kabur Jan 2004

Potassium Potential Of The Soils Of The Gevaş Region In Eastern Anatolia, Keri̇m Mesut Çi̇mri̇n, Emrah Akça, Muzaffer Şenol, Gökhan Büyük, Seli̇m Kabur

Turkish Journal of Agriculture and Forestry

Due to its semi-arid climate and sloping topography, Eastern Anatolia has limited soil resources for agriculture, strongly necessitating sustainable land management. Fertile soils occur only in limited areas such as the Gevaş region, where sugar beet is one of the main crops with a particular need for K. Unfortunately, studies on the non-exchangeable (slowly available) and exchangeable K contents, along with soil properties such as clay mineralogy, organic matter content and texture, which are closely related to soil production potential, are not sufficient in the region. Thus, 40 soil samples out of 7 soil series were collected for the determination …

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Nebline, January 2004 Jan 2004

Nebline, January 2004

NEBLINE Newsletter Archive from Nebraska Extension in Lancaster County

Rural Living Carries Rewards, Responsibilities
Monthly “Acreage Insights” Clinics Focus on Rural Living Topics
Caring for Florist Azaleas
Garden Guide
Starting Avocado Seeds
Growing Norfolk Island Pines
Prevention and Control of Rabbit Damage
Don’t Let the Bed Bugs Bite!
Birds Need Water in Winter Too
Use Compact Fluorescent Lamps to Save Energy
Crop Protection Clinic Scheduled for Jan. 7
Off-Farm Income Important to Farm Families
Private Pesticide Applicator Training
Sorghum Seminars Scheduled
Use Portable Generators Carefully
Unused and Abandoned Wells
Put In The Big Rocks First!
Touchdown Beef Chili Recipe
10,000 Steps for Health
Serving Soup - Safely!
Tips for …

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Soil Temperature Under A Dormant Bermudagrass Mulch: Simulation And Measurement, Simon Van Donk, Ernest W. Tollner, Jean Steiner, Steven Evett Jan 2004

Soil Temperature Under A Dormant Bermudagrass Mulch: Simulation And Measurement, Simon Van Donk, Ernest W. Tollner, Jean Steiner, Steven Evett

West Central Research and Extension Center, North Platte

The ENergy and WATer BALance (ENWATBAL) model is a mechanistic, numerical model that simulates soil water and temperature profiles, evaporation from soil, and transpiration from crops, but it does not simulate the effects of a mulch layer. Surface vegetative mulches are becoming more common, especially in reduced -tillage systems, limiting the model’s applicability. Our objective was to modify ENWATBAL to enable physically based simulation of the effects of a dense mulch. As a preliminary evaluation of the model, soil temperatures simulated with the modified model were compared with those measured at Watkinsville, Georgia, in Cecil sandy loam ( …

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Spatial Econometric Analysis Of Louisiana Rural Real Estate Values, Patricia Soto Jan 2004

Spatial Econometric Analysis Of Louisiana Rural Real Estate Values, Patricia Soto

LSU Doctoral Dissertations

The general purpose of this study was to conduct a spatial analysis of the dynamics of rural land values in Louisiana. Specifically, spatial econometric procedures and hedonic price analysis were used to evaluate the impact of land characteristics on land prices across rural land markets in Louisiana. Initially, hedonic models were estimated by ordinary least squares (OLS) procedures to test for the presence of spatial autocorrelation using Lagrange Multiplier tests. Results suggested that there was spatial autocorrelation in the error terms. Hedonic models were then estimated using maximum likelihood (ML) spatial error techniques. Log likelihood numbers and likelihood ratio tests …

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Contents, Discovery Editors Jan 2004

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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The Effect Of Water Deficit On Yield And Yield Components Of Sugar Beet, Kenan Uçan, Cafer Gençoğlan Jan 2004

The Effect Of Water Deficit On Yield And Yield Components Of Sugar Beet, Kenan Uçan, Cafer Gençoğlan

Turkish Journal of Agriculture and Forestry

This study was conducted to determine the effect of different water levels on the sugar rate, sugar yield and root yield of sugar beet (Beta vulgaris L.) under Kahramanmaraş climatic conditions in the production season 1999-2000. A line source sprinkler irrigation system was used with 6 irrigation levels; I_1, I_2, I_3, I_4, I_5 and I_6. The sugar beet row adjacent to the lateral was denoted the most water applied level (I_1), and the most remote row from the lateral was denoted the least water applied level (I_6). The plant rows between levels I_1 and I_6 were taken as the deficit …

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Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü Jan 2004

Variation In Essential Oil Content And Composition In Turkish Anise (Pimpinella Anisum L.) Populations*, Neşet Arslan, Bi̇lal Gürbüz, Ercüment O. Sarihan, Ali̇ Bayrak, Ahmet Gümüşçü

Turkish Journal of Agriculture and Forestry

This research was carried out at the University of Ankara, Faculty of Agriculture, Field Crops Department and the laboratories of the Food Engineering Department. Twenty-nine anise seed samples were collected from different locations in 9 producer provinces in Turkey and were used as the study materials in order to determine essential oil and essential oil compositions. According to the results, essential oil levels varied from 1.3% to 3.7%. The major component of the essential oil was trans-anethole. This compound ranged from 78.63% to 95.21%. Population 26 may be recommended for trans-anethole percentage and populations 8 and 22 for essential oil …

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Inheritance Of Grain Yield In A Half-Diallel Maize Population, Aydin Ünay, Cahi̇t Konak, Hüseyi̇n Başal Jan 2004

Inheritance Of Grain Yield In A Half-Diallel Maize Population, Aydin Ünay, Cahi̇t Konak, Hüseyi̇n Başal

Turkish Journal of Agriculture and Forestry

Inheritance of grain yield, heterosis and combining ability were investigated in maize populations obtained from half-diallel crossing among 9 inbred parental lines. General and specific combining ability effects were significantly different among parental lines. The grain yield was under the dominance gene effect. The parents W 552 and DNB were considered suitable according to their yield capacities and general combining ability effects. The midparent heterosis values ranged from 46.10% (H.96 x DNB) to 573.12% (ALKD 222 x A 632) whereas the useful heterosis values varied between -46.47% (A 619 x A 632) and 10.78% (N 7A x ALKD 90-1), and …

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Determining Suitable Investment Areas For The Forest Products Industry: An Example From The Black Sea Region In Turkey, Kadri̇ Cemi̇l Akyüz, İlker Akyüz, Hasan Seri̇n, Hi̇cabi̇ Cindik Jan 2004

Determining Suitable Investment Areas For The Forest Products Industry: An Example From The Black Sea Region In Turkey, Kadri̇ Cemi̇l Akyüz, İlker Akyüz, Hasan Seri̇n, Hi̇cabi̇ Cindik

Turkish Journal of Agriculture and Forestry

Investment decisions and regional development are significant for economic development and the welfare of society. The most suitable decision should be made by using multivariable statistical techniques in both public and private sector investments, because various factors may affect such investments. In this study the aim was to direct the preferences of private sector investments in the forest products industry in the Black Sea region, which lags behind the other regions from the point of view of economic development and has an unstable development situation. With this aim, cities with advantages and investment priorities were determined. Principal component analysis (PCA) …

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Hormone Signaling Pathways In Plants: The Role Of Jasmonic Acid In Plant Cell Signaling, İskender Ti̇ryaki̇ Jan 2004

Hormone Signaling Pathways In Plants: The Role Of Jasmonic Acid In Plant Cell Signaling, İskender Ti̇ryaki̇

Turkish Journal of Agriculture and Forestry

Plant growth and metabolism are affected by various biotic and abiotic stimuli including microorganisms and insects attack as well as light and environmental stresses. Such a diverse plant response requires a communication system that uses a group of chemical messengers called hormones. Hormones promote, inhibit, or qualitatively modify plant growth and development. This complex process requires a signal transduction that defines a specific information pathway within a cell that translates an intra- or extracellular signal into a specific cellular response. The characterization of mutants in the hormone response pathway provides not only an excellent opportunity to understand hormone action in …

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2004 Weed Science Research Report - Blue Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2004

2004 Weed Science Research Report - Blue 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 2004. It includes work on corn and soybean and the management of several weeds in North Dakota.

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2004 Weed Science Research Report - Green Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2004

2004 Weed Science Research Report - Green 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 2004. It includes work on wheat and the management of several weeds in North Dakota.

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2004 Weed Science Research Report - Yellow Section, Ndsu Weed Science, Dept. Of Plant Sciences Jan 2004

2004 Weed Science Research Report - Yellow 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 2004. It includes work on bean, canola, carrots, lentil, sunflower and the management of several weeds in North Dakota.

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Instructions For Authors, Discovery Editors Jan 2004

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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An Analysis Of Marginal Effects Of Land Characteristics And Purchase Factors On Rural Land Values In North Louisiana, Rebecca Summers Mclaren Jan 2004

An Analysis Of Marginal Effects Of Land Characteristics And Purchase Factors On Rural Land Values In North Louisiana, Rebecca Summers Mclaren

LSU Master's Theses

Hedonic models estimate the marginal effect of land characteristics and factors that contribute to a purchase decision on rural land values in submarkets of north Louisiana. While size of tract and mix of land use have expected impacts on rural land values, forces that motivate the buyer also affect price. The natural resource endowment of each of the three submarkets in this study differs significantly from one another. Topography has clearly identifiable impacts on crop selection and income in each submarket. Additionally, the relative location of the submarkets to major metropolitan areas is influential on rural land values in one …

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Temporal Variability In Nutrient Transport In A First-Order Agricultural Basin In Southern Ontario, Merrin L. Macrae Jan 2004

Temporal Variability In Nutrient Transport In A First-Order Agricultural Basin In Southern Ontario, Merrin L. Macrae

Theses and Dissertations (Comprehensive)

This thesis examines phosphorus and nitrate transport in a first-order agricultural catchment in Southern Ontario. Specific areas of concern relate to (1) long- and short-term temporal variability in nutrient export patterns, (2) the role of drainage tiles in annual nutrient export, (3) the effects of antecedent hydrologic conditions (AHC) on nutrient export patterns and (4) temporal variability in the nutrient retention in riparian buffer strips and streams. Temporal variability in hydrochemical export from the study basin over a two-year period is described and quantified and the importance of high magnitude events is highlighted. This is the first comprehensive study to …

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Sexual And Asexual Reproductive Characteristics Of The North American Pawpaw [Asimina Triloba (L.) Dunal], Sheri Beth Crabtree Jan 2004

Sexual And Asexual Reproductive Characteristics Of The North American Pawpaw [Asimina Triloba (L.) Dunal], Sheri Beth Crabtree

University of Kentucky Master's Theses

The North American Pawpaw [Asimina triloba (L.) Dunal] shows great potential as a new fruit crop. Kentucky State University in Frankfort, Ky. is the site for the USDA National Clonal Germplasm Repository (NCGR) for Asimina species. Both the fruit and the trees themselves are of high value to growers and nursery producers. Pawpaw cultivars are currently propagated by grafting or budding onto seedling rootstock; no method currently exists to clonally propagate pawpaw on its own roots. Three methods of layering were attempted in this study to clonally propagate pawpaw: trench layering, pot layering, and mound layering. Both trench layering …

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Archaeobotanical And Dendroarchaeological Studies In Ilgarini Cave (Pınarbaşı, Kastamonu, Turkey), Ünal Akkemi̇k, Burhan Aytuğ, Sercay Güzel Jan 2004

Archaeobotanical And Dendroarchaeological Studies In Ilgarini Cave (Pınarbaşı, Kastamonu, Turkey), Ünal Akkemi̇k, Burhan Aytuğ, Sercay Güzel

Turkish Journal of Agriculture and Forestry

With its historical remains and beautiful travertine formations, Ilgarini cave is important in terms of archaeobotany and natural sciences. In the left part of the cave there are 2 temples and 11 graves. These graves had 3 floors, and wooden materials were used between them. The purpose of the study was to identify the wooden materials taken from the graves in Ilgarini cave and to determine the lifetime of the people who lived in the cave by dating them dendrochronologically. In wood identification analysis, many thin sections were cut, and they were compared with reference wood sections. In dendroarchaeological analysis, …

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Effects Of Barley As A Companion Crop On The Hay Yield And Plant Density Of Red Clover And The Botanical Composition Of Hay, Mustafa Tan, Yunus Seri̇n, H. İbrahi̇m Erkovan Jan 2004

Effects Of Barley As A Companion Crop On The Hay Yield And Plant Density Of Red Clover And The Botanical Composition Of Hay, Mustafa Tan, Yunus Seri̇n, H. İbrahi̇m Erkovan

Turkish Journal of Agriculture and Forestry

Forage legumes are frequently established with a companion crop such as a cereal crop for controlling weed invasion and high hay production. This study was conducted under irrigated conditions in order to determine the effects of the seeding rate and harvest stage of barley as a companion crop on the hay yield and plant density of red clover and the botanical composition of hay. Red clover was established with barley sown at 0, 60, 120 and 180 kg ha^{-1} and cut at the milk-dough and hard-dough stages. The highest total hay yield (6000 kg ha^{-1}) was measured at a 180 …

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Effect Of Different Control Methods On Weeds, Yield Components And Nodulation In The Spring Lentil, Işik Tepe, Murat Erman, Ayşe Yazlik, Remzi̇ Levent, Kuddusi̇ İpek Jan 2004

Effect Of Different Control Methods On Weeds, Yield Components And Nodulation In The Spring Lentil, Işik Tepe, Murat Erman, Ayşe Yazlik, Remzi̇ Levent, Kuddusi̇ İpek

Turkish Journal of Agriculture and Forestry

This study was conducted on the lentil cultivar Malazgirt 89 during 1999 and 2000 to determine the most appropriate method for controlling weeds. In the experiments, hand hoeing, trifluralin, imazethapyr, linuron, prometryn, phenmedipham + desmediphame, trifluralin + hand hoeing and linuron + hand hoeing which should be used as an alternative to hand weeding, were tested. The effects of herbicides on nodulation in lentils were also investigated. Centaurea depressa in the first year, and Ranunculus arvensis and Acroptilon repens in the second year were the dominant weed species encountered in the plots. A combination of linuron + hand hoeing, linuron …

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Determination Of Wetland Vegetation Height With Lidar, Levent Genç, Bon Dewitt, Scot Smith Jan 2004

Determination Of Wetland Vegetation Height With Lidar, Levent Genç, Bon Dewitt, Scot Smith

Turkish Journal of Agriculture and Forestry

Light Detection and Ranging (LIDAR) is a new technology that offers a potential alternative to field surveying and photogrammetric techniques for the collection of elevation data. It has the advantages of being rapid accurate and able to map areas that are difficult to access. LIDAR has demonstrated the capability to accurately estimate important vegetation structural characteristics such as forest canopy height. For these reasons, airborne LIDAR data were used to compare vegetation height determinations with field observations on one selected transect in the vicinity of Lake Hatchineha in Florida, USA. The approach was based on the LIDAR and field measurements. …

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The Influence Of Clay Content, Organic Carbon And Land Use Types On Soil Aggregate Stability And Tensile Strength, Yasemi̇n Kavdir, Hasan Özcan, Hüseyi̇n Eki̇nci̇, Orhan Yüksel, Yusuf Yi̇ği̇ni̇ Jan 2004

The Influence Of Clay Content, Organic Carbon And Land Use Types On Soil Aggregate Stability And Tensile Strength, Yasemi̇n Kavdir, Hasan Özcan, Hüseyi̇n Eki̇nci̇, Orhan Yüksel, Yusuf Yi̇ği̇ni̇

Turkish Journal of Agriculture and Forestry

Soil tensile strength (TS) and aggregate stability (AS) values can be used as indicators of soil structural quality. The objective of this study was to determine the influences of land use types, soil carbon and clay contents on soil structure. Soil samples were collected from 51 different locations from the Kumkale Basin in Çanakkale in April and July 2003. A global positioning system (GPS) was used to determine the coordinates of sampling points. TS, AS, soil organic carbon (SOC), and clay contents were determined. Results of soil analysis and coordinates of sampling points were transferred to the Arc View geographical …

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Modeling Approaches To Salt Management Problems In Irrigated Agriculture: A Review, Ataç Tuli̇, William Austin Jury Jan 2004

Modeling Approaches To Salt Management Problems In Irrigated Agriculture: A Review, Ataç Tuli̇, William Austin Jury

Turkish Journal of Agriculture and Forestry

Irrigation projects have been developed throughout human history to increase food production, but they frequently contribute to salinization and drainage problems as well. Examples where salinization and drainage water disposal due to agricultural activity are a critical problem can be found in irrigated areas in different parts of the world. To find possible solutions to irrigation and drainage related problems, government agencies, scientists, and soil and water resources managers recommend a broad array of management alternatives for conducting investigations. The concept of management alternatives of salinization and drainage problems can be evaluated by field experiments and/or by simulating conditions with …

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Main Organic Acid Distribution Of Authentic Citrus Juices In Turkey, Feryal Karadeni̇z Jan 2004

Main Organic Acid Distribution Of Authentic Citrus Juices In Turkey, Feryal Karadeni̇z

Turkish Journal of Agriculture and Forestry

Nineteen authentic citrus juice samples (6 tangerine, 4 sweet orange, 4 grapefruit, 4 lemon and 1 sour orange) were investigated with respect to organic acid distribution. Average citric, malic and fumaric acid contents of tangerine juices were 9.22 g l^{-1}, 5.29 g l^{-1} and 368 µg l^{-1}, respectively. These values for orange juices were 13.28 g l^{-1}, 7.79 g l^{-1} and 373 µg l^{-1}, respectively. The citric acid concentration in lemon juices, having the highest acidity, varied between 48.54 and 60.32 g l^{-1}. It was followed by grapefruit juices with an average 19.61 g l^{-1} citric acid content. In all …

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Density Of Centaurea Solstitialis L. And Its Natural Enemies Ceratapion Spp. In Southern Turkey, Si̇bel Uygur Jan 2004

Density Of Centaurea Solstitialis L. And Its Natural Enemies Ceratapion Spp. In Southern Turkey, Si̇bel Uygur

Turkish Journal of Agriculture and Forestry

Centaurea solstitialis L., yellow star thistle, is an annual weed that belongs to the family Asteraceae. In Turkey, this weed can be found in pasture areas, along roadsides, in cultivated areas and in field margins. Yellow star thistle is native to Mediterranean and western Asian countries. Alternative management strategies to chemical control have been and still are being studied; for example, management strategies to control this weed in the USA concentrate on the biological control approach. In addition, chemical control methods in pasture areas are banned in Turkey, which led us to carry out this field study. The average percentage …

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Determination Of Optimum Weed Control Timing In Maize (Zea Mays L.), M. Nedi̇m Doğan, Aydin Ünay, Özhan Boz, Fi̇li̇z Albay Jan 2004

Determination Of Optimum Weed Control Timing In Maize (Zea Mays L.), M. Nedi̇m Doğan, Aydin Ünay, Özhan Boz, Fi̇li̇z Albay

Turkish Journal of Agriculture and Forestry

In field experiments conducted in 2001 and 2002, the optimum timing for weed control in maize was investigated. Both experiments were designed according to randomized complete blocks, and Cyperus rotundus L., Amaranthus retroflexus L., Portulaca oleracea L. and Chenopodium album L. were naturally infested on experimental plots in both years. The study in 2001 was conducted to determine the critical period for weed control for maize. With this aim plots were maintained weed-free or weedy for different periods based on crop growth stage. The relationships between grain yield and different weedy or weed-free periods were determined via regression analyses in …

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Effect Of Foliar Iron Applications At Different Growth Stages On Iron And Some Nutrient Concentrations In Strawberry Cultivars, İbrahi̇m Erdal, Kahraman Kepenek, İlhan Kizilgöz Jan 2004

Effect Of Foliar Iron Applications At Different Growth Stages On Iron And Some Nutrient Concentrations In Strawberry Cultivars, İbrahi̇m Erdal, Kahraman Kepenek, İlhan Kizilgöz

Turkish Journal of Agriculture and Forestry

This study was conducted to investigate the effect of foliar Fe applications on leaf Fe and some nutrient (P, Ca, Mg, K, Mn and Zn) concentrations in strawberry (Fragaria vesca L.) cultivars. For this purpose, 2 forms of Fe solutions (FeSO_4. 7 H_2O and Fe-EDTA) containing 0.28% Fe were sprayed onto the strawberry leaves at 3 growth stages (before blooming, first blooming, full blooming). Depending on the Fe sources, Fe concentration increased after each application. Before blooming, leaf Fe concentration increased from 60 mg kg^{-1} (control) to 127 and 105 mg kg^{-1} with Fe-EDTA and FeSO_4. 7 H_2O, respectively. During …

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Mgc 2002-2004, Mandarin Garden Club Jan 2004

Mgc 2002-2004, Mandarin Garden Club

Mandarin Garden Club Scrapbooks

MGC (Mandarin Garden Club) scrapbook includes images, news articles and 3-d embellishments. Cover material: Cloth, Size: 15” x 13.75” x 2”

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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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