Agriculture Commons^™

The Effect Of Nitrogen Applications On The Growth Of Young Olive Trees And Nitrogen Useefficiency, Isabel Ferreira, Margari̇da Arrobas, José Moutinho-Pereira, Carlos M. Correia, Manuel Angelo Rodrigues

Turkish Journal of Agriculture and Forestry

Two field trials (FieldExp1 and FieldExp2) and a pot experiment (PotExp) were c0onducted over a period of 3 years to assess olive tree response to nitrogen (N) applications and to estimate apparent N recovery. FieldExp1 was installed in a 3-year-old olive grove. FieldExp2 consisted of a plantation of young rooted plants. Two treatments were applied in both experiments: N application and a nonfertilized control. In PotExp, 4 N rates were used. In FieldExp1, olive yield significantly increased with applied N in only 1 of the 3 growing seasons. In FieldExp2, aboveground dry matter yield significantly increased with N application. In …

Evaluation Of Some Melon Lines For Their Resistance Against Melon Aphid,Aphis Gossypii Glover, Musa Kirişik, Mi̇ne Ünlü, Fedai̇ Erler

Turkish Journal of Agriculture and Forestry

The melon aphid, Aphis gossypii Glover (Hemiptera: Aphididae), which has a very wide host range including cucurbit species, causes serious direct and indirect damage to many crops. In both greenhouse and open field melon cultivation in Antalya (in southwestern Turkey), the control of this pest generally depends on the use of chemical insecticides, resulting in a rapid increase in resistance to a wide range of insecticides. In the present study, a total of 23 melon lines (22 indigenous and 1 exotic) belonging to 2 varieties (Cucumis melo var. inodorus and C. melo var. reticulatus) were evaluated for resistance to the …

Determination Of Some Physicomechanical And Biochemical Parameters Of Hazelnut (Corylus Avellana L.) Cultivars, Necati̇ Çeti̇n, Mehmet Yaman, Kevser Karaman, Bünyami̇n Demi̇r

Turkish Journal of Agriculture and Forestry

Hazelnut is one of the most popular nuts consumed by people; it has different cultivars in Turkey. The aim of the current study was to characterize some physicomechanical characteristics, shape features, color, and biochemical properties of 6 standard and 3 local hazelnut cultivars grown in Turkey. The shape and size properties of the samples were determined using image processing techniques as an alternative to conventional measurement methods. Additionally, principal component analysis (PCA) was used to classify the hazelnut samples in terms of the biochemical parameters of the hazelnut cultivars. According to the findings, the highest crude oil (63.25%) and lowest …

Larvicidal Effect Of Achillea Biebersteinii Afan. (Asteraceae) Essential Oil Against Larvaeof Pine Processionary Moth, Thaumetopoea Pityocampa (Denis & Schiffermüller, 1775)(Lepidoptera: Notodontidae), Memi̇ş Kesdek, Şaban Kordali, Ayşe Usanmaz Bozhüyük, Melek Güdek

Turkish Journal of Agriculture and Forestry

The pine processionary moth, Taumetopoea pityocampa (Denis & Schiffermüller, 1775) (Lepidoptera: Notodontidae), is an important pest of coniferous trees in the forests of Turkey and throughout the world. In order to control this pest, different methods such as mechanical, biological, and chemical control have been used. However, this pest is still a major problem in Turkey, as well as globally. The study aimed to investigate the larvicidal effect of essential oil obtained from Achillea biebersteinii Afan. (Asteraceae) in different doses (10, 15, and 20 μL Petri-1) over time (12, 24, 36, and 48 h) against T. pityocampa larvae in laboratory …

Isolation And Identification Of Bacillus Pumilus Yhh-2, A Potential Pathogen To Thealfalfa Weevil (Hypera Postica Gyllenhal), Hati̇ce Öğütcü, Yasemi̇n Erbey, Medi̇ne Güllüce, Burak Alaylar, Mehmet Karadayi, Selma Sezen, Mahmut Erbey

Turkish Journal of Agriculture and Forestry

Alfalfa weevil (Hypera postica Gyllenhal, 1813) samples were collected from different locations in Kırşehir, Turkey, during May-August in 2014. They were immediately transferred to the research laboratory and dissected under aseptic conditions. Then serial dilutions were prepared from digestive tract samples and the spread plate technique was used for obtaining pure cultures. The conventional and molecular methods that include morphological and physiological examinations, biochemical tests, 16S rDNA sequencing, and the basic local alignment search tool (BLAST) were used for identification of the bacterial isolates. According to the findings of the present study, the YHH-2 isolate was found as the main …

Biochemical Content In Fruits Of Peach And Nectarine Cultivars, Mustafa Kenan Geçer

Turkish Journal of Agriculture and Forestry

In Turkey, there is an increasing interest for peach and nectarine fruits due to their sensory properties and nutritional values. The large diffusion of new peach and nectarine cultivars requires the knowledge of all fruit characteristics in connection with the cultivation area to satisfy market demand. This study seeks to determine fruit quality attributes and nutraceutical values of 7 commercially important peach (Glohaven, Dixired, Cresthaven, Redhaven, Merrill Gem Free, June Gold, and Jefferson) and 4 nectarine cultivars (Nectared4, Gransun, Cherokee, and Royal Glo) grown in Malatya region of Turkey. The fruits were evaluated for their phenolic compounds (protocatechuic, rutin, quercetin, …

Exogenous Cysteine Alleviates Mercury Stress By Promoting Antioxidant Defence In Maize(Zea Mays L.) Seedlings, Ferhunde Aysi̇n, Aykut Karaman, Asli Yilmaz, Özkan Aksakal, Ebru Gezgi̇nci̇oğlu, Sakineh Mohammadi Kohnehshahri

Turkish Journal of Agriculture and Forestry

Mercury (Hg) is one of the most important environmental pollutants that negatively affects plant growth and development. Cysteine (Cys) plays an important role in plant response to various environmental stress factors. In the present study, the alleviation of Hg stress through exogenous Cys treatment to maize seedlings was evaluated. For this purpose, a hydroponic experiment was set up to investigate the effect of HgCI2 (100 μM) and in combination with Cys (200 μM) on plant growth, total chlorophyll content, reactive oxygen species, antioxidant enzyme activities, and mRNA expression levels of some antioxidant genes in maize seedlings. The results showed that …

Phenotypic Variability Of Autochthonous Walnut (Juglansregia L) Genotypes Innorthwestern Bosnia And Herzegovina, Azra Skender, Mirsad Kurtovic, Pakeza Drkenda, Dinko Becirspahic, Aziz Ebrahimi

Turkish Journal of Agriculture and Forestry

The main objective of this study was to examine the characteristics and the relationship between walnuts in the Una-Sana Canton based on phenotypic properties. This is the first study of preselection of walnut variability in this area. In this study, we evaluated the phenological and morphological characteristics of 75 selected genotypes during 2014 and 2015. Twenty-four phenotypic traits were monitored throughout 2 years on different sites. The results of the PCA analysis showed a very high heterogeneity of walnut seedlings on the examined sites, from the aspect of observed parameters. A limited number of superior genotypes were found, but individual …

Effect Of Morphological Components On The Herbage Yield And Quality Of Quinoa(Chenopodium Quinoa Willd.) Grown At Different Dates, Süleyman Temel, Bi̇lal Keski̇n

Turkish Journal of Agriculture and Forestry

In addition to environmental conditions and cultural practices, plant factors, particularly morphological parts, have a significant effect on the yield and feed value of roughages. However, no studies have been conducted for this purpose on quinoa grown for hay production. Therefore, between 2017 and 2018, a study was planned to determine the effect of different sowing times (mid- March, late March, early April, and mid-April) and plant parts (leaves, stems and panicles) together on the herbage yield and quality characteristics of quinoa. In the experiment established according to a randomized complete blocks design, a significant decrease in plant height, stem …

Changes In Some Vegetation Properties Of The Rangelands Of The Palandöken Mountains, Erzurum, Over Two Decades, Ali̇ Koç, Mehmet Keri̇m Güllap, Mustafa Sürmen, Hali̇l İbrahi̇m Erkovan

Turkish Journal of Agriculture and Forestry

Plant community responses to environmental changes depend upon management strategies, climate, topography, and time. The objective herein was to determine canopy coverage and botanical changes in Turkish highland rangelands with different topographical characteristics between 1993 and 2013. Trends in the plant composition changed depending on the slope aspect (compass direction) and topography. The contribution of the grasses to the canopy decreased, while that of legumes and the other families increased. The results indicated that rangeland degradation occurred under uncontrolled grazing conditions. Suitable range management changes are recommended for the conservation of natural resources in the highland rangelands of Turkey.

Sugar Beet Root Rot Caused By Oomycetous Pathogensin Turkeyand Their Control By Seed Treatment, Meltem Avan, Gülsüm Palacioğlu, Tüli̇n Sarigül Ertek, Yakup Zekai̇ Katircioğlu, Harun Bayraktar, Riza Kaya, Sali̇h Maden

Turkish Journal of Agriculture and Forestry

The aim of this study was to determine the oomycetous pathogens causing root roton sugar beet and test their control by seed treatment in Konya Province, Turkey. Oomycetous fungus-like pathogens of sugar beet were investigated using 866 plant samples collected at 2 growth stages, early seedling and late root, from fields in the Konya region of Turkey and 1 sample from the Thrace region. Herein, 10 oomycetous species belonging to 3 genera:Aphanomyces cochlioides, Phytophthora cryptogea, Ph. pseudocryptogea, Ph. megasperma, Ph. inundata, Pythium aphanidermatum, Py. helicoides, Py. heterothallicum, Py. Sylvaticum, and Py. Ultimum var. ultimum (Globisporangium ultimum var. ultimum) were discovered …

Some Important Physicochemical And Bioactive Characteristics Of The Main Apricot Cultivars From Turkey, Neva Karataş, Memnune Şengül

Turkish Journal of Agriculture and Forestry

Turkey is one of the world's leading producers in both in fresh and dried apricots, and Malatya Province is the capital for apricots. In the present study, the fruit of 13 apricot cultivars (Adilcevaz, Alkaya, Aprikoz, Çataloğlu, Hacıhaliloğlu, Hasanbey, İsmailağa, Kabaaşı, Mahmuduneriği, Soğancı, Şam, Şekerpare, and Tokaloğlu-Erzincan), grown together at the Apricot Research Institute in Malatya Province, were harvested and evaluated for some important physicochemical and bioactive characteristics. The results showed statistically significant differences in most of the physicochemical and bioactive characteristics. Fresh apricot fruit peel color values, L, a, and b, were determined as between 48.66 and 64.70, 8.12 …

The Combine: Program Overview (Brochure)

The Combine

Nebraska is known nationally for its distinguished brand and production efficiency in food and agriculture. The state ranks among the top producers of over a dozen commodities including corn, beans, beef, and millet.

The Combine is a statewide program focused on fostering high-growth innovation and entrepreneurship in food and agriculture-tech sectors. The initiative is led by Invest Nebraska with support from The Nebraska Department of Economic Development and The Nebraska Department of Agriculture.

Invest Nebraska Corporation builds a better future for our state by providing financial and operational assistance to high growth companies, developing high growth infrastructure, and attracting out-of-state …

Geographic Distribution Of Bacillus Thuringiensis Cry1f Toxin Resistance In Western Bean Cutworm (Lepidoptera: Noctuidae) Populations In The United States, Brad S. Coates, Craig A. Abel, Katharine A. Swoboda-Bhattarai, Debra E. Palmquist, Débora Goulart Montezano, Sarah N. Zukoff, Yangzhou Wang, Jeffery D. Bradshaw, Christina D. Difonzo, Elson Shields, Kelley J. Tilmon, Thomas Hunt, Julie A. Peterson

West Central Research and Extension Center, North Platte

The western bean cutworm (WBC), Striacosta albicosta (Lepidoptera: Noctuidae), can be a severe pest of transgenic corn in the western Plains and Great Lakes regions of North America, including on hybrids expressing the Bacillus thuringiensis (Bt) Cry1F toxin. The level and geographic distribution of Cry1F resistance are not completely known. Neonate S. albicosta from 10 locations between Nebraska and New York state were subjected to dose–response trypsin-activated native Cry1F toxin overlay bioassays. In 2017, the mean estimated lethal concentration causing 50% larval mortality (LC50) ranged from 15.1 to 18.4 μg Cry1F cm−2, and were not significantly different among locations. In …

Agroecosystems Entomology Lab, Research Summary 2020

West Central Research and Extension Center, North Platte

Contents

Introduction: Agroecosystems Entomology Lab

Project # 1: Chemigation efficacy and spray deposition on corn for the control of western bean cutworm

Project #2: Insecticide application on western bean cutworm eggs and response of predators to treated eggs

Project #3: Investigating the Role of Spiders in Integrated Pest Management for Biological Control of Nebraska Crop Pests

Project #4: Modeling the potential global geographic distribution of Striacosta albicosta using MaxEnt

Project #5: Diversity and abundance of arthropods in industrial hemp fields of Nebraska

Optimization Of Conditions For Heat Pretreatment And Enzymatic Predigestion Of Ddgs For Pigs, Kevin Jerez-Bogota

Electronic Theses and Dissertations

The high fiber content of corn dried distillers’ grains with solubles (DDGS) can limit its utilization in swine diets. Pretreatment with heat and enzymatic predigestion of whole stillage (WS; slurry material that is dried into DDGS) can alleviate negative effects of dietary fiber and can improve digestive and fermentation characteristics of the feedstuff. However, optimal time and temperature of the heat pretreatment of WS, and best enzymes for predigestion of WS have not been identified. Experiments were conducted to identify optimal conditions for heat pretreatment and multienzyme predigestion of WS for pigs. First experiment was conducted to identify optimal temperature …

From Active Duty To Agriculture: Engaging Veterans In Farming And Gardening, Daria Domin

All Institute for Community Inclusion Publications

Second in a series of Innovative AT Practices briefs, From Active Duty to Agriculture: Engaging Veterans in Farming and Gardening describes a long standing initiative by the Kansas Assistive Technology Program that aids veterans and active duty soldiers transitioning into civilian life by providing them with opportunities in agriculture.

Fall Broccoli Production In High Tunnels, Wenjing Guan

Midwest Vegetable Trial Reports

A fall broccoli trial was conducted in a high tunnel at the Southwest Purdue Agricultural Center, Vincennes, IN in 2016 to test the potential of growing broccoli in high tunnels after tomato. Six broccoli cultivars were evaluated in the trial. Seedlings were transplanted in the high tunnel on Sep. 2. Plants started to form heads in the middle of October. The first harvest occurred on Oct. 25 on cultivars Blue Wind and Green Magic. Harvest for cultivars Belstar and Arcadia started the latest on Nov. 11. Cultivars Green Magic and Blue Wind developed about 2 side heads per plant, which …

Summer Squash Variety Evaluation For Early-Season Production In High Tunnels, Wenjing Guan

Midwest Vegetable Trial Reports

Crops that can set fruit without pollination have an advantage for early-season high tunnel production. With a diverse fruit shape and color, summer squash is a valuable crop providing diversity, especially for the early farmers market. Six selected summer squash cultivars that are either indicated as parthenocarpic cultivar in seed catalogs or showed high capability to set fruit without pollination in the previous study were evaluated in a high tunnel trial in spring 2018 at the Southwest Purdue Agricultural Center, Vincennes, IN.

Deciphering The Past To Inform The Future: Preparing For The Next (“Really Big”) Extreme Event, Debra Pc Peters, N Dylan Burruss, Gregory S. Okin, Jerry L. Hatfield, Stacey Lp Scroggs, Haitao Huang, Colby W. Brungard, Jin Yao

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Climate change will bring more extremes in temperature and precipitation that will impact productivity and ecosystem resilience throughout agroecosystems worldwide. Historical events can be used to identify drivers that impact future events. A catastrophic drought in the US in the 1930s resulted in an abrupt boundary between areas severely impacted by the Dust Bowl and areas that were less severely affected. Historical primary production data confirmed the location of this boundary at the border between two states (Nebraska and Iowa). Local drivers of weather and soils explained production responses across the boundary before and after the drought (1926–1948). During the …