Agriculture Commons^™

Mutational Analysis Of The Major Soybean Uref Paralogue Involved In Urease Activation, Joe C. Polacco, D. L. Hyten, Mônica Medeiros-Silva, David A. Sleper, Kristin D. Bilyeu

Department of Agronomy and Horticulture: Faculty Publications

The soybean genome duplicated ~14 and 45 million years ago and has many paralogous genes, including those in urease activation (emplacement of Ni and CO₂ in the active site). Activation requires the UreD and UreF proteins, each encoded by two paralogues. UreG, a third essential activation protein, is encoded by the single-copy Eu3, and eu3 mutants lack activity of both urease isozymes. eu2 has the same urease-negative phenotype, consistent with Eu2 being a single-copy gene, possibly encoding a Ni carrier. Unexpectedly, two eu2 alleles co-segregated with missense mutations in the chromosome 2 UreF paralogue (Ch02UreF), suggesting …

Cytokinin-Mediated Source ⁄Sink Modifications Improve Drought Tolerance And Increase Grain Yield In Rice Under Water-Stress, Zvi Peleg, Maria Reguera, Ellen Tumimbang, Harkamal Walia, Eduardo Blumwald

Department of Agronomy and Horticulture: Faculty Publications

Drought is the major environmental factor limiting crop productivity worldwide. We hypothesized that it is possible to enhance drought tolerance by delaying stress-induced senescence through the stress-induced synthesis of cytokinins in crop-plants. We generated transgenic rice (Oryza sativa) plants expressing an isopentenyltransferase (IPT) gene driven by PSARK, a stress- and maturation-induced promoter. Plants were tested for drought tolerance at two yield-sensitive developmental stages: pre- and post-anthesis. Under both treatments, the transgenic rice plants exhibited delayed response to stress with significantly higher grain yield (GY) when compared to wild-type plants. Gene expression analysis revealed a significant shift in expression of hormone-associated …

Nutrient Management Record Keeping Calendar, July 2011-December 2012, Leslie J. Johnson, Charles Shapiro, Charles Wortmann, Chris G. Henry, Larry Howard, Tamilee D. Nennich

Nebraska Cooperative Extension: Faculty and Staff Publications

Records for Nebraska Concentrated Animal Feeding Operations

Record the initials of the person performing the inspection each time. Check marks will not satisfy the record-keeping requirements.

Record any maintenance and/or repairs.

Correct all deficiencies within 30 days.

Western Australia's Biosecurity, Department Of Agriculture And Food, Western Australia, Department Of Environment And Conservation, Western Australia, Department Of Fisheries, Western Australia, Forest Products Commission, Western Australia

Biosecurity published reports

Biosecurity is the protection of the economy, environment and human health from the negative impacts of pests, weeds and diseases, including the management of invasive species if they become established (definition adopted by AusBIOSEC).

This requires steps to prevent the entry of harmful organisms, as well as the timely and efficient management of them if they do enter.

Biosecurity threats range from catastrophic diseases such as Foot and Mouth Disease, which causes rapid and widespread animal deaths, to more subtle and slower spreading problems such as invasive weeds, mussels that foul vessel hulls and fungus-induced dieback disease of trees. These …

Getting To Green: Niche-Driven Or Government-Led Entrepreneurship And Sustainability In The Wine Industry, Lauretta Frederking

New England Journal of Entrepreneurship

Through the framework of Michael Porter’s five forces, this article compares sustainability in the Oregon and British Columbia wine industries. After describing the contrasting characteristics of the green niche model and the government-led model of environmental change, the article analyzes the emerging challenges for each type of change.The distinct sources for profitability and future innovation suggests diversity within the sustainability movement and two very different processes of translating environmental values into entrepreneurial practice.

Climate Change And Idaho Agriculture: Is Farm Size A Determinate Of Adaptive Capacity?, Blair P. Vanderlugt

McNair Scholars Research Journal

Determining how agriculture will be affected by climate change is not only a question biophysical change in crop production; it also depends on the adaptation of the farmer to these changing conditions. A flaw in models using nationally aggregated cross sectional data is that the adaptive capacity of unique farms is not captured in the analysis. In order to understand the local effect of climate change on welfare models must capture attributes specific to the study area. Factors that must be taken into consideration include farm characteristics local policy and institutional frameworks (Antle et al. 2004; Mendelsohn, Nordhaus, and Shaw …

The Kentucky Agricultural Economic Outlook For 2012, Laura A. Powers, Kenneth H. Burdine

Kentucky Agricultural Economic Outlook

No abstract provided.

Seed Treatment Fungicide Options For Soybeans In South Dakota, Larry Osborne

SDSU Extension Fact Sheets

This document contains a chart of products that may be used to treat seed on-farm.

Stability Properties Of Certain Durum Wheat Genotypes For Major Quality Characteristics, Mehmet Ali̇ Saki̇n, Oral Düzdemi̇r, Abdulvahi̇t Sayaslan, Ferhat Yüksel

Turkish Journal of Agriculture and Forestry

Many ecological regions of Turkey are suitable for the production of durum wheat, and therefore the yield and quality of this wheat should be improved. In this study, stability properties associated with the pasta quality of 25 durum wheat (Triticum durum Desf.) genotypes grown in 3 different locations (Tokat-Kazova, Diyarbakır, and Sivas-Ulaş) for 2 years (2005-2006, 2006-2007) were investigated. Durum wheat genotypes were composed of 12 registered varieties and 13 advanced experimental lines. Field trials were conducted in a randomized complete block design with 3 replications. Protein content, gluten index, sedimentation and specific sedimentation volumes, yellow pigment content, and lipoxygenase …

Field Appraisal Of Seed Priming To Improve The Growth, Yield, And Quality Of Direct Seeded Rice, Hafeez Ur Rehman, Shahzad Maqsood Ahmed Basra, Muhammad Farooq

Turkish Journal of Agriculture and Forestry

Poor crop stand and high weed infestation are the major constraints of direct seeded rice. Seed priming has the potential to improve the seedling emergence and crop stand. This study was conducted to evaluate the on-farm assessment of direct seeded rice by employing different priming techniques such as on-farm priming, hydropriming, hardening, and osmohardening with CaCl_2 and KCl. Untreated seeds were taken as control. Among all the seed priming techniques, osmohardening with CaCl_2 improved the stand establishment, allometric response, agronomic traits, yield, and quality of harvested paddy compared with other priming techniques, and non-primed control in direct seeded culture. Improved …

Water Dynamics And Productivity In Dehydrated Watermelon Plants As Modified By Red Polyethylene Mulch, Peter Ferus, Silvia Ferusova, Jan Kona

Turkish Journal of Agriculture and Forestry

In order to describe changes in water regime and production parameters caused by red polyethylene (PE) mulch in dehydrated watermelon (Citrullus lanatus (Thunb.) Matsum. & Nakai) plants, as well as to define their transpiration efficiency (TE) and water use efficiency (WUE) under different temperature environments, 2 individual pot experiments (summer external experiment and autumnal greenhouse experiment) were conducted. We found that red mulch reduced leaf relative water content (RWC) fall caused by water restriction but osmotic adjustment (OA) was not responsible for this stress alleviation. A general OA was observed in the course of dehydration, possibly associated with developmental changes …

Soybean Breeding: Comparison Of The Efficiency Of Different Selection Methods, Jegor Miladinovic, Joe W. Burton, Svetlana Balesevic Tubic, Dragana Miladinovic, Vuk Djordjevic, Vojin Djukic

Turkish Journal of Agriculture and Forestry

The following study was conducted in order to compare the modified single-seed descent method of selection used in soybean breeding at the Institute of Field and Vegetable Crops in Novi Sad, Serbia, with the standard bulk method and the pedigree method. The source materials for the development of hybrid populations were 15 genotypes, and a total of 10 cross combinations were made. Comparison of the lines developed by the different breeding methods was done in the F6 generation. Genetic gain from selection was taken as the main indicator of efficiency of the tested methods. The modified single-seed descent method produced …

Estimation Of Single Leaf Chlorophyll Content In Sugar Beet Using Machine Vision, Parviz Ahmadi Moghaddam, Mohammadali Haddad Derafshi, Vine Shirzad

Turkish Journal of Agriculture and Forestry

Estimating crop nitrogen status accurately during side-dressing operations is essential for effective management of site-specific nitrogen applications. Variable rate technology (VRT) is one of the major operations in precision agriculture to reduce environmental risks and increase fertilizer use efficiency. In the present study, color image analysis was performed to estimate sugar beet leaf chlorophyll status. The experiment was carried out in a phytotron and nitrogen was applied at 6 levels to the sugar beet grown in pots. Chlorophyll level of the leaves was measured by a SPAD-502 chlorophyll meter. To estimate chlorophyll status, a neural-network model was developed based on …

Seasonal Changes In The Physiological Characteristics Of Anatolian Black Pine And The Effect On Seedling Quality, Ayşe Deli̇göz

Turkish Journal of Agriculture and Forestry

Seasonal changes in water relations parameters, dry weight fraction (DWF), and root growth potential (RGP) were examined for Anatolian black pine [Pinus nigra Arn. subsp. pallasiana (Lamb.) Holmboe] seedlings. In addition, phenological conditions were monitored. Water relations parameters were estimated using the pressure-volume technique, including osmotic potential at full turgor (\psi_{\pi100}), osmotic potential at turgor loss point (\psi_{\piTLP}), free water content at turgor loss point (FWC_{TLP}), relative water content at turgor loss point (RWC_{TLP}), and symplastic water/dry weight (Vo/DW). \psi_{\piTLP}, \psi_{\pi100}, DWF, and RGP showed seasonal changes, but FWC_{TLP}, RWC_{TLP}, and Vo/DW did not show a clear seasonal change. The …

Soil Texture Fractions And Fractal Dimension Of Particle Size Distribution As Predictors Of Interrill Erodibility, Mohammad Reza Neyshabouri, Abbas Ahmadi, Hassan Rouhipour, Hossein Asadi, Mehdi Irannajad

Turkish Journal of Agriculture and Forestry

Choosing a particular textural fraction as an erodibility predictor is often confusing because various fractions of soil particles have been introduced as erodibility index by many researchers. Recently, advances in fractal theory have introduced a scaling parameter for characterizing soil fragments. The objectives of this study were (i) to test the applicability of fractal dimension of particle size distribution (PSD) for estimation of interrill erodibility and (ii) to study the relationship between interrill erodibility and soil texture components. Samples from 36 soil series with contrasting characters were collected from northwest Iran. The sand fractions were obtained by sieving, while silt …

Utilization Of Boron Compounds As Synergists With Ammonium Polyphosphate For Flame Retardant Wood-Polymer Composites, Ramazan Kurt, Fati̇h Mengeloğlu

Turkish Journal of Agriculture and Forestry

The investigation consisted of utilizing boron compounds (BCs) as a synergist with ammonium polyphosphate (APP) in manufacturing flame retardant wood-polymer composites (WPCs). Flame retardants (FRs) at various ratios (APP, boric acid (BA), borax (BX), zinc borate and BA/BX mixtures) were used to determine the physical, mechanical, and burning rate properties of WPCs manufactured from wood flour, polypropylene, and maleic anhydride polypropylene. The results showed that the addition of FRs reduced all mechanical properties of WPCs except for impact strength. However, this reduction was lower for samples having BCs in FRs formulation. Similar burning rate results were achieved in WPCs having …

Quality Parameters And Total Phenolic Content In Tomato Fruits Regarding Cultivar And Microclimatic Conditions, Nina Kacjan Marsic, Lea Gasperlin, Veronika Abram, Maja Budic, Rajko Vidrih

Turkish Journal of Agriculture and Forestry

The aim of this research was to evaluate the color, firmness, and total phenolic (TP) content in tomatoes according to cultivar and growing conditions. Cultivars with oval, elongated, round, and cherry-shaped fruits of determinate tomato were grown in Mediterranean (Dragonja Valley) and continental regions. Experiments in the continental region were conducted outdoors (Ljubljana-field) and under a low tunnel (Ljubljana-tunnel). Results indicated that the color and firmness were significantly influenced by the typology of the cultivars and by the maturity stage associated with the climatic conditions. Oval, elongated, and cherry fruits had darker and more intensely red fruit skins, with significantly …

Stem Reserve Accumulation And Mobilization In Wheat (Triticum Aestivum L.) As Affected By Sowing Date And N – P – K Levels Under Mediterranean Conditions, Amir Aynehband, Maryam Valipoor, Esfandiar Fateh

Turkish Journal of Agriculture and Forestry

Some parts of the dry matter accumulated in the wheat stem during the vegetative period are translocated to grain during the grain-filling period. This study assesses the changes in dry matter accumulation in wheat, and the translocation of different internodes of the main stem as affected by some cultural practices. Field experiments, including 3 sowing dates (early, conventional, and late), and 4 N - P - K levels, F_1 - (0 - 0 - 0), F_2 - (110 - 90 - 80), F_3 - (70 - 50 - 40) and F_4 - (150 - 130 - 120), were conducted at …

Field Evaluation Of Effective Microorganisms (Em) Application For Growth, Nodulation, And Nutrition Of Mung Bean, Arshad Javaid, Rukhsana Bajwa

Turkish Journal of Agriculture and Forestry

Effective microorganisms (EM) is a commercial biofertilizer that contains a mixture of co-existing beneficial microorganisms collected from natural environments. Predominantly it consists of species of photosynthetic and lactic acid bacteria, yeast, and actinomycetes. The present study was conducted to evaluate the effect of EM application on growth, nodulation, yield, and nutrient uptake in mung bean [Vigna radiata (L.) Wilczek] var. NIAB Mung 98 under field conditions. Field soil was amended with farmyard manure at 20 t ha^{-1}, Trifolium alexandrinum green manure at 20 t ha^{-1}, and recommended (NPK) and half (½ NPK) doses of chemical fertilizers. EM was applied in …

Assessment Of Yield And Water Use Efficiency Of Drip-Irrigated Cotton (Gossypium Hirsutum L.) As Affected By Deficit Irrigation, Fuad Hussein, Mussaddak Janat, Abdallah Yakoub

Turkish Journal of Agriculture and Forestry

A field experiment was conducted for 2 consecutive years to evaluate the response of cotton crop to deficit irrigation under drip irrigation conditions. Water use efficiency (WUE), seed cotton yield, and fiber quality parameters were assessed at various irrigation levels. The experiment was set up to apply water at 4 different application rates: 50%, 65%, 80%, and 100% of the soil water depletion. These were abbreviated as DI50, DI65, DI80, and FI, respectively. The total amounts of irrigation water applied were 408 and 773 mm and the average seed cotton yields were 2909 and 5090 kg ha^{-1} for the DI50 …