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  Subjects -> AGRICULTURE (Total: 724 journals)
    - AGRICULTURAL ECONOMICS (71 journals)
    - AGRICULTURE (496 journals)
    - CROP PRODUCTION AND SOIL (91 journals)
    - POULTRY AND LIVESTOCK (40 journals)

AGRICULTURE (496 journals)                  1 2 3 4 5 | Last

Aceh International Journal of Science and Technology     Open Access   (Followers: 1)
Acta agriculturae Slovenica     Open Access   (Followers: 5)
Acta Agrobotanica     Open Access   (Followers: 3)
Acta Agronomica Hungarica     Full-text available via subscription   (Followers: 1)
Acta Agronomica Sinica     Full-text available via subscription   (Followers: 6)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 2)
Acta Scientiarum. Technology     Open Access  
Acta Technologica Agriculturae     Open Access   (Followers: 2)
Advances in Agriculture     Open Access   (Followers: 2)
Advances in Agriculture & Botanics     Open Access   (Followers: 10)
Advances in Agronomy     Full-text available via subscription   (Followers: 12)
Advances in Life Science and Technology     Open Access   (Followers: 6)
AFBM Journal     Open Access  
Africa Development     Open Access   (Followers: 20)
Africa Research Bulletin: Political, Social and Cultural Series     Hybrid Journal   (Followers: 9)
African Journal of Agricultural Research     Open Access   (Followers: 3)
African Journal of Food Science     Open Access   (Followers: 5)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 11)
African Journal of Horticultural Science     Open Access   (Followers: 2)
African Journal of Range & Forage Science     Hybrid Journal   (Followers: 4)
African Journal of Sustainable Development     Full-text available via subscription   (Followers: 7)
Agribusiness : an International Journal     Hybrid Journal   (Followers: 4)
Agricultura Tecnica     Open Access   (Followers: 6)
Agricultura Tropica et Subtropica     Open Access   (Followers: 2)
Agricultural Advances     Open Access   (Followers: 4)
Agricultural and Food Science     Open Access   (Followers: 20)
Agricultural Economics     Hybrid Journal   (Followers: 48)
Agricultural History     Full-text available via subscription   (Followers: 81)
Agricultural History Review     Full-text available via subscription   (Followers: 3)
Agricultural Research     Hybrid Journal   (Followers: 6)
Agricultural Science     Full-text available via subscription   (Followers: 6)
Agricultural Science     Open Access  
Agricultural Sciences     Open Access   (Followers: 8)
Agricultural Sciences in China     Full-text available via subscription   (Followers: 4)
Agricultural Systems     Hybrid Journal   (Followers: 22)
Agricultural Water Management     Hybrid Journal   (Followers: 19)
Agriculture     Open Access   (Followers: 7)
Agriculture & Food Security     Open Access   (Followers: 12)
Agriculture (Poľnohospodárstvo)     Open Access   (Followers: 1)
Agriculture and Agricultural Science Procedia     Full-text available via subscription   (Followers: 1)
Agriculture and Human Values     Hybrid Journal   (Followers: 12)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 36)
Agriprobe     Full-text available via subscription  
Agriscientia     Open Access  
Agrivita : Journal of Agricultural Science     Open Access   (Followers: 3)
Agro-Science     Full-text available via subscription  
Agroalimentaria     Open Access   (Followers: 1)
Agrociencia     Open Access   (Followers: 2)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 1)
Agronomía Colombiana     Open Access   (Followers: 1)
Agronomía Costarricense     Open Access   (Followers: 2)
Agronomía Mesoamericana     Open Access   (Followers: 1)
Agronomie Africaine     Full-text available via subscription  
Agronomy     Open Access   (Followers: 8)
Agrosearch     Open Access  
AI & Society     Hybrid Journal   (Followers: 3)
Alinteri Zirai Bilimler Dergisi : Alinteri Journal of Agricultural Sciences     Open Access  
Ambiência     Open Access  
Ambiente & Agua : An Interdisciplinary Journal of Applied Science     Open Access   (Followers: 1)
American Journal of Agricultural and Biological Sciences     Open Access   (Followers: 11)
American Journal of Botany     Full-text available via subscription   (Followers: 14)
American Journal of Economics and Sociology     Hybrid Journal   (Followers: 24)
American Journal of Potato Research     Hybrid Journal   (Followers: 2)
American Journal of Rural Development     Open Access   (Followers: 2)
Anais da Academia Brasileira de Ciências     Open Access   (Followers: 2)
Annales des Sciences Agronomiques     Full-text available via subscription  
Annals of Agricultural and Environmental Medicine     Open Access   (Followers: 1)
Annals of Agricultural Sciences     Open Access   (Followers: 1)
Annual Review of Resource Economics     Full-text available via subscription   (Followers: 11)
APCBEE Procedia     Partially Free   (Followers: 2)
Applied Economics Letters     Hybrid Journal   (Followers: 24)
Applied Financial Economics Letters     Hybrid Journal   (Followers: 7)
Arboricultural Journal : The International Journal of Urban Forestry     Hybrid Journal   (Followers: 6)
Archivos de Zootecnia     Open Access   (Followers: 4)
Arquivos do Instituto Biológico     Open Access  
Arthropod-Plant Interactions     Hybrid Journal   (Followers: 1)
Asian Economic Papers     Hybrid Journal   (Followers: 3)
Asian Journal of Agricultural Research     Open Access   (Followers: 4)
Asian Journal of Plant Sciences     Open Access   (Followers: 2)
Australian Cottongrower, The     Full-text available via subscription   (Followers: 1)
Australian Economic Papers     Hybrid Journal   (Followers: 6)
Australian Economic Review     Hybrid Journal   (Followers: 7)
Australian Forest Grower     Full-text available via subscription   (Followers: 2)
Australian Forestry     Full-text available via subscription   (Followers: 4)
Australian Grain     Full-text available via subscription   (Followers: 5)
Australian Holstein Journal     Full-text available via subscription   (Followers: 2)
Australian Journal of Agricultural and Resource Economics     Hybrid Journal   (Followers: 6)
Australian Journal of Agricultural Engineering     Open Access   (Followers: 1)
Australian Sugarcane     Full-text available via subscription  
Avances en Investigacion Agropecuaria     Open Access   (Followers: 1)
Bangladesh Journal of Agricultural Research     Open Access   (Followers: 3)
Bangladesh Journal of Scientific Research     Open Access   (Followers: 1)
Bioagro     Open Access   (Followers: 1)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 5)
Biocontrol Science and Technology     Hybrid Journal   (Followers: 5)
Biodiversity     Hybrid Journal   (Followers: 25)
Biodiversity : Research and Conservation     Open Access   (Followers: 23)
Biological Agriculture & Horticulture : An International Journal for Sustainable Production Systems     Partially Free   (Followers: 11)
Biosystems Engineering     Hybrid Journal   (Followers: 1)
Biotemas     Open Access  

        1 2 3 4 5 | Last

Journal Cover   Advances in Agronomy
  [SJR: 1.742]   [H-I: 67]   [12 followers]  Follow
   Full-text available via subscription Subscription journal
   ISSN (Print) 0065-2113
   Published by Elsevier Homepage  [2812 journals]
  • Soil Spectroscopy: An Alternative to Wet Chemistry for Soil Monitoring
    • Abstract: Publication date: Available online 20 March 2015
      Source:Advances in Agronomy
      Author(s): M. Nocita , A. Stevens , B. van Wesemael , M. Aitkenhead , M. Bachmann , B. Barthès , E. Ben Dor , D.J. Brown , M. Clairotte , A. Csorba , P. Dardenne , J.A.M. Demattê , V. Genot , C. Guerrero , M. Knadel , L. Montanarella , C. Noon , L. Ramirez-Lopez , J. Robertson , H. Sakai , J.M. Soriano-Disla , K.D. Shepherd , B. Stenberg , E.K. Towett , R. Vargas , J. Wetterlind
      The soil science community is facing a growing demand of regional, continental, and worldwide databases in order to monitor the status of the soil. However, the availability of such data is very scarce. Cost-effective tools to measure soil properties for large areas (e.g., Europe) are required. Soil spectroscopy has shown to be a fast, cost-effective, environmental-friendly, nondestructive, reproducible, and repeatable analytical technique. The main aim of this paper is to describe the state of the art of soil spectroscopy as well as its potential to facilitating soil monitoring. The factors constraining the application of soil spectroscopy as an alternative to traditional laboratory analyses, together with the limits of the technique, are addressed. The paper also highlights that the widespread use of spectroscopy to monitor the status of the soil should be encouraged by (1) the creation of a standard for the collection of laboratory soil spectra, to promote the sharing of spectral libraries, and (2) the scanning of existing soil archives, reducing the need for costly sampling campaigns. Finally, routine soil analysis using soil spectroscopy would be beneficial for the end users by a reduction in analytical costs, and an increased comparability of results between laboratories. This ambitious project will materialize only through (1) the establishment of local and regional partnerships among existent institutions able to generate the necessary technical competence, and (2) the support of international organizations. The Food and Agriculture Organization (FAO) of United Nations and the Joint Research Centre of the European Commission are well placed to promote the use of laboratory and field spectrometers for monitoring the state of soils.

      PubDate: 2015-04-05T11:50:45Z
  • Hydrological Aspects of Arsenic Contamination of Groundwater in Eastern
    • Abstract: Publication date: Available online 20 March 2015
      Source:Advances in Agronomy
      Author(s): Saugata Datta
      Arsenic in the Bengal Delta has been the topic of discussion for more than a decade since 73% of the population (more than 140 million people) are under deep stress for locating arsenic-free drinking water. Most of this arsenic is geogenic, having its source from the Himalayan metamorphic facies, and is carried down by major river systems and thereby accumulating on the fluvio-deltaic plains to the southeast. All the states on this path are to some extent have depicted the presence of arsenic in the subsurface groundwaters. Currently, there are two major pathways for ingesting arsenic: (1) by the drinking water; and (2) by the food chain. Various scales of health effects from skin lesions to major cancer outbreaks have been located distinctively and pathologically in about 43% of the affected population. Irrigation practices have exacerbated the lateral extent of high arsenic in this region. Secondary natural minerals Fe and Mn oxyhydroxides seem to adsorb both the valences of arsenic and, in the presence of labile organic carbon as in dissolved organic matter, help in releasing the arsenic into the groundwaters. Shallow to intermediate depth-reducing aquifers within the Holocene floodplains are the most contaminated and range from <10 to 4600 μg L−1. The Bengal Basin, within a few meters of sea level, has repercussions from infiltrating saline seawater, and the impacts of climate change makes the problem worse in this region. Switching groundwater wells, harvesting rainwater, and household small-scale filtration systems, are the three most effective remediation mechanisms known to the people of the Bengal Delta.

      PubDate: 2015-04-05T11:50:45Z
  • Evaluation of System of Rice Intensification Methods Applied in the Double
           Rice-Cropping System in Central China
    • Abstract: Publication date: Available online 20 March 2015
      Source:Advances in Agronomy
      Author(s): Wei Wu , Jianliang Huang , Farooq Shah , Norman Uphoff
      The rising food demand to feed a growing human population and the need for environmentally friendly strategies for sustainable agricultural development require significant attention to enhancing crop productivity in innovative ways. The system of rice intensification (SRI) has been proposed as a promising strategy to address these trends offering multifaceted potentials to improve rice yields and the efficiency of factors of production, while protecting the environment and natural resource quality. In China, SRI has been introduced via several organizations and in different parts of the country since 2000. Many studies in China over the last decade have reported that SRI methods can increase rice yield. These modified methods also reduce field requirements for irrigation water and seed, subsequently lowering the costs of production, and thus increasing the net income of farmers. However, SRI methods have not been systematically evaluated when used in the double rice-cropping system, which is common in many parts of China. Use of SRI methods within this system should be properly evaluated, including their impact on certain key problems that farmers face. Sheath blight and lodging are major important constraints impeding the achievement of high grain yield in intensive, high-input rice production systems in China. The present study compared rice yield, N-use efficiency, physiological factors, sheath blight prevalence, and lodging resistance across three versions of the double rice-cropping system: cultivation with modified SRI methods suitable to the region, regionally recommended management practices (RMP), and modified RMP (MRMP), which combined features of the first two management systems. Field experiments were conducted in both the early and late summer seasons of 2008 and 2009 in Wuxue County, Hubei province, China, to make empirical comparisons among the three systems of management. Although yield differences among the systems were not consistent or always significant, the results revealed significant advantages of SRI management in terms of enhancing rice crops' resistance to sheath blight infestation and lodging. Rice plants' photosynthetic rate was higher with SRI and MRMP than with RMP, mainly attributable to their higher values of leaf N (%). In the early season, SRI's principles were used with a higher plant population than usually recommended for SRI, finding that this can compensate for the stress of very low temperatures. In the late summer season, both SRI and MRMP practices can be recommended as alternatives to present local management as they achieved higher grain yields with greater resistance to sheath blight and lodging. Due to SRI's greater resistance to disease and lodging, there is less need for fungicide applications, and fewer irrigation water issues are required, making its changes in management practices beneficial.

      PubDate: 2015-04-05T11:50:45Z
  • Nitrogenous Gas Emissions from Soils and Greenhouse Gas Effects
    • Abstract: Publication date: Available online 23 March 2015
      Source:Advances in Agronomy
      Author(s): Ed Gregorich , H. Henry Janzen , Bobbi Helgason , Ben Ellert
      The Haber–Bosch process for synthesizing fertilizer nitrogen (N) is among the most important modern discoveries because it has enabled us to grow enough food for several billion more of us. At the same time, however, profusion of added “reactive” N has become a prominent ecological threat, globally, because a large fraction of applied N is lost from agricultural ecosystems. Nitrogen added to agricultural soils, in organic forms or as synthetic N fertilizers, has one of four fates; it can be assimilated by plants, lost to surface- or groundwater, retained in the soil, or lost to the atmosphere. The last of these is particularly worrisome because of links to climate change and other threats to the biosphere. Our aim is to summarize briefly the processes of atmospheric N emissions to the air from agricultural ecosystems, and to consider how management practices might reduce those emissions. Nitrogen gases emitted from soil emanate from naturally occurring biological processes regulated largely by three interactive factors: substrate availability, aeration, and temperature. Although these factors are partly dictated by weather and intrinsic soil properties, they are also influenced by management so that emissions can be heavily influenced by practices imposed on the land. Variables to consider in devising systems with reduced emissions include: forms, rate, and timing of fertilizer; tillage and residue management; crop rotation, including the use of legumes; and manuring practices. All of these need to be considered together to devise systems, tuned to local conditions, which not only reduce emissions but also meet growing demands for agricultural yields. Developing such systems, based on holistic understanding from many disciplines, is now critical to sustain the long-term productivity and vitality of our ecosystems.

      PubDate: 2015-04-05T11:50:45Z
  • Occurrence, Detection, and Molecular and Metabolic Characterization of
           Heat-Resistant Fungi in Soils and Plants and Their Risk to Human Health
    • Abstract: Publication date: Available online 23 March 2015
      Source:Advances in Agronomy
      Author(s): Magdalena Frąc , Stefania Jezierska-Tys , Takashi Yaguchi
      Heat-resistant fungi are often factors causing spoilage of heat-processed products. Contamination of agricultural raw materials is often a result of their contact with soil. Materials contaminated by spores of heat-resistant fungi can be a risk to consumers' health because of toxic metabolites (mycotoxins) produced by these microorganisms. Due to resistance of fungi to high temperatures they are able to survive industry pasteurization process. Therefore, the only way to prevent the growth of these microorganisms in the product is suitable selection of material by conducting tests for the presence of heat-resistant fungi. The use of traditional culture methods is long and, therefore, does not apply in the selection of raw materials for production. However, time is a critical factor in assessing the acceptance or rejection of a given batch of raw material, due to the necessity of processing it fresh, which is very important especially in the case of fruit.

      PubDate: 2015-04-05T11:50:45Z
  • Wetland Restoration and Creation for Nitrogen Removal: Challenges to
    • Abstract: Publication date: Available online 30 March 2015
      Source:Advances in Agronomy
      Author(s): Margaret A. Goldman , Brian A. Needelman
      Concern for the health of the Chesapeake Bay and the establishment of the Bay Total Maximum Daily Load have led to growing interest in restoring and creating wetlands to mitigate agricultural nitrogen inputs. All Bay states have included wetland restoration in their watershed implementation plans (WIPs) to help meet their required reduction in nitrogen loading. In agricultural areas of the coastal plain, efforts to develop a watershed-scale approach to siting and designing wetlands have been met with considerable challenges. Nitrate loss is primarily attributed to base-flow conditions, and groundwater flow is multidimensional and highly variable, so accounting for nitrate transport connectivity between agricultural N source areas and potential wetland restoration areas is difficult. Socioeconomic and political challenges also constrain implementation. Our ability to account for subsurface connectivity may be improved with better assessment of hydrologic connectivity in areas with artificial drainage, catchment-scale studies of hydrogeomorphic predictions of hydrologic connectivity, and improved use of geospatial data. A coordinated monitoring program would improve our ability to estimate wetland nitrogen removal efficiencies across environmental and management conditions. The addition of a requirement that water quality should be an explicit objective of restorations included within WIP accounting would avoid the inclusion of projects with minimal water quality benefits. Research is also needed on farmer attitudes in the Chesapeake Bay watershed toward wetlands for water quality protection. These proposed actions would improve our ability to understand and implement wetland restoration as a component of our response to meet water quality objectives.

      PubDate: 2015-04-05T11:50:45Z
  • Preface
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 130
      Author(s): Donald L. Sparks

      PubDate: 2015-03-01T07:31:06Z
  • Copyright Page
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 130

      PubDate: 2015-03-01T07:31:06Z
  • Contents
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 130

      PubDate: 2015-03-01T07:31:06Z
  • Contributors
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 130

      PubDate: 2015-03-01T07:31:06Z
  • Approaches to Translational Plant Science
    • Abstract: Publication date: Available online 13 February 2015
      Source:Advances in Agronomy
      Author(s): Dorte Bodin Dresbøll , Brian Christensen , Kristian Thorup-Kristensen
      Translational science deals with the dilemma between basic research and the practical application of scientific results. In translational plant science, focus is on the relationship between agricultural crop production and basic science in various research fields, but primarily in the basic plant science. Scientific and technological developments have allowed great progress in our understanding of plant genetics and molecular physiology, with potentials for improving agricultural production. However, this development has led to a separation of the laboratory-based research from the crop production systems and the more applied crop research. The link between basic and applied research is at risk when focus is kept on one level of complexity, not taking higher or lower levels into account. Without this link, the chance that basic research results will be translated into agricultural progress is lessened. In our opinion, implementation of translational plant science is a necessity in order to solve the agricultural challenges of producing food and materials in the future. We suggest an approach to translational plant science forcing scientists to think beyond their own area and to consider higher or lower levels of complexity and possible multidisciplinary collaboration. The approach can be described by four main questions, suggesting considerations of (1) viability of the basic results outside the lab, (2) possible side effects, (3) implementation difficulties, and (4) alternative solutions to the same problems. By the use of examples where translational plant science has either been successfully or not successfully applied we describe an approach for advancing translational plant science.

      PubDate: 2015-03-01T07:31:06Z
  • Phosphorus Recovery and Reuse from Waste Streams
    • Abstract: Publication date: Available online 23 January 2015
      Source:Advances in Agronomy
      Author(s): Rajasekar Karunanithi , Ariel A. Szogi , Nanthi Bolan , Ravi Naidu , Paripurnanda Loganathan , Patrick G. Hunt , Matias B. Vanotti , Christopher P. Saint , Yong Sik Ok , Sathiya Krishnamoorthy
      Phosphorus (P) is a macronutrient essential for all living organisms. Regrettably, it is a finite resource since phosphate rock (PR) is the main material used for production of P fertilizers. Globally, the demand for quality PR is escalating due to many factors including increasing human population. Inevitably, the demand for PR will exceed its supply capacity. This condition will be very difficult to manage as living systems have no alternative for P. Moreover, P use efficiency is low; only 15–20% of applied P is used by crops and animals. Globally, the remaining P is shunted into various waste streams. These waste streams include large quantities of effluents rich in P from both municipal and industrial wastewater treatment systems and manure from livestock production. The P present in these waste streams poses a threat to the environment by nutrient enrichment resulting in serious ecological issues such as eutrophication of waterways. However, P in these waste streams, if economically recovered, can contribute to a sustainable management of P resources. This review covers the following aspects: global importance of P as an essential nutrient; efficient and sustainable utilization of P; waste stream production, their suitability for P recovery, and limitations; current and emerging technologies for recovery of P; and the use of recovered P material. Finally, future research needs are identified associated with P recovery from waste streams and reuse in agriculture.

      PubDate: 2015-01-25T22:52:14Z
  • Climate-Change Effects on Soils: Accelerated Weathering, Soil Carbon, and
           Elemental Cycling
    • Abstract: Publication date: Available online 23 January 2015
      Source:Advances in Agronomy
      Author(s): Nikolla P. Qafoku
      Climate change (i.e., high atmospheric carbon dioxide (CO2) concentrations (≥400 ppm); increasing air temperatures (2–4 °C or greater); significant and/or abrupt changes in daily, seasonal, and interannual temperature; changes in the wet/dry cycles; intensive rainfall and/or heavy storms; extended periods of drought; extreme frost; heat waves and increased fire frequency) is and will significantly affect soil properties and fertility, water resources, food quantity and quality, and environmental quality. Biotic processes that consume atmospheric CO2 and create organic carbon (C) that is either reprocessed to CO2 or stored in soils, are the subject of active current investigations with great concern over the influence of climate change. In addition, abiotic C cycling and its influence on the inorganic C pool in soils is a fundamental global process in which acidic atmospheric CO2 participates in the weathering of carbonate and silicate minerals, ultimately delivering bicarbonate and Ca2+ or other cations that precipitate in the form of carbonates in soils or are transported to the rivers, lakes, and oceans. Soil responses to climate change will be complex, and there are many uncertainties and unresolved issues. The objective of the review is to initiate and further stimulate a discussion about some important and challenging aspects of climate-change effects on soils, such as accelerated weathering of soil minerals and resulting C and elemental fluxes in and out of soils, soil/geo-engineering methods used to increase C sequestration in soils, soil organic matter (SOM) protection, transformation and mineralization, and SOM temperature sensitivity. This review reports recent discoveries and identifies key research needs required to understand the effects of climate change on soils.

      PubDate: 2015-01-25T22:52:14Z
  • Weed Problems, Ecology, and Management Options in Conservation
           Agriculture: Issues and Perspectives
    • Abstract: Publication date: Available online 22 January 2015
      Source:Advances in Agronomy
      Author(s): Kulasekaran Ramesh
      The unsustainable exploitation of the inelastic resources for farming has led to a widespread degradation of soil resources, which has forced us to rethink our food production strategies into conservation agriculture (CA). It would be difficult to slow down the intensive-production process keeping in view, the demographic pressure. The present-day systems are posing challenges to land, water, and atmosphere, besides the biodiversity. CA involves minimal disturbance of the land, coupled with good agronomic principles such as crop residue management and crop rotation, with the application of chemicals for weed management. With a view to sustainable development in agriculture, CA is a concept trying to reconcile ecology, economy, and performance. Tillage is practiced since ages, for the preparation of field and making weed-free conditions and is an integral component of traditional agricultural systems. However, soil erosion was inevitable. The focal theme of CA revolves around reducing tillage operations. From a weed management point of view, soil tillage brought buried seeds to the upper layer and stimulated their germination and the maintenance of crop residues hampered the herbicide efficacy. However, there are reports of shift in weed population due to the adoption of CA as compared to the conventional agricultural practices posing a formidable challenge to the CA concept. The interaction of weed–crop system becomes too complex. Reduced tillage and zero tillage allowed seed to stay on the surface so that they become prey to the predators. The crop/cover crop residue may also release some chemicals, which may also reduce weed seed germination process. Understanding the weed seed ecology and weed ecology could aid in devising appropriate management options for successful implementation of CA. An integrated management encompassing selection of appropriate crop cultivar and cropping system coupled with CA principles would aid in the management of weeds. Understanding weed seed predation would add value to the management issues. Herbicide resistance need to be given due attention for chemical weed management.

      PubDate: 2015-01-25T22:52:14Z
  • Fusion of Soil and Remote Sensing Data to Model Soil Properties
    • Abstract: Publication date: Available online 22 January 2015
      Source:Advances in Agronomy
      Author(s): Sabine Grunwald , Gustavo M. Vasques , Rosanna G. Rivero
      Grand global challenges of our time, such as food security and soil security, cannot be met without up-to-date, high-quality, high-resolution, spatiotemporal, and continuous soil and environmental data that characterize soil ecosystems. At local and regional scales, accurate and precise soil assessment is critical for management, soil health, and sustainability. This article presents integration pathways fusing lab- and field-based soil measurements, proximal and remote sensor data, environmental covariates, and/or methods within the framework of the Meta Soil Model which is poised to extend contemporary soil applications. The STEP-AWBH model allows to quantify soil-environmental covariates (S: soil, T: topography, E: ecology, P: parent material, A: atmosphere, W: water, B: biota, H: human factors) of which numerous can be sensed. We present an in-depth overview of proximal and remote sensor technologies that are used in the realm of digital soil assessment. Specific attention is given to the fusion process of (1) proximal, (2) proximal/remote, and (3) remote sensors to directly sense or predict soil properties. We highlight the promises and perils of sensor-derived proxies that allow inferences on soil properties and their change. From our review it is evident that there is no such single sensor or method that fits all soil applications. In many studies the fusion/integration of data and methods enhance the capabilities to assess specific soil properties. We critically contrast the benefits and constraints of proximal and remote sensing, fusion of soil-environmental data, and integration pathways to mash data and methods into complex soil assessments.

      PubDate: 2015-01-25T22:52:14Z
  • Series Page
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 129

      PubDate: 2015-01-25T22:52:14Z
  • Title Page
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 129

      PubDate: 2015-01-25T22:52:14Z
  • Copyright Page
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 129

      PubDate: 2015-01-25T22:52:14Z
  • Contributors
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 129

      PubDate: 2015-01-25T22:52:14Z
  • Preface
    • Abstract: Publication date: 2015
      Source:Advances in Agronomy, Volume 129
      Author(s): Donald L. Sparks

      PubDate: 2015-01-25T22:52:14Z
  • Water-Yield Relations and Water Use Efficiency of Maize Under Nitrogen
           Fertigation for Semiarid Environments: Experiment and Synthesis
    • Abstract: Publication date: Available online 14 January 2015
      Source:Advances in Agronomy
      Author(s): Mahdi Gheysari , Henry W. Loescher , Sayed Hossein Sadeghi , Seyed Majid Mirlatifi , Mohammad Javad Zareian , Gerrit Hoogenboom
      We examined the main and interactive effects of nitrogen (N) and deficit irrigation (DI) on the yield response factor (K y ), water use efficiency (WUE), and irrigation water use efficiency (IWUE) of silage maize from a semiarid region of Iran. Experiments were conducted in 2003 and 2004 that included three N fertigation rates (0, 150, and 200kgNha−1 N0, N150, and N200, respectively) and four irrigation levels (0.7, 0.85, 1.0, and 1.13 of soil water depletion, W1, W2, W3, and W4, respectively). The soil water content measurements showed that most of the water was extracted from the top 60cm of the soil profile. DI increased WUE for all N fertilizer treatments with the maximum value being observed at the W2 level. The average of the IWUE for the two years of the study showed that the lowest IWUE was 1.38kgm−3 for the N0W1 treatment, while the highest IWUE was 1.8kgm−3 for the N200W3 treatment. A linear relationship was observed between evapotranspiration and the total biomass for all N fertilizer levels in 2003 and 2004. The minimum K y to water was obtained from the N0 level as 0.64 in 2003 whereas the maximum K y was recorded from the N200 level as 0.95 in 2004. This reveals that higher N rates application would enhance corn yield sensitivity to water stress. Overall, the sensitivity of the silage maize to water stress was affected by different planting date and nitrogen fertilizer levels. We also discuss emergent trends in water and nutrient management in light of the increased need for food security in the face of changing climate and growing populations.

      PubDate: 2015-01-16T22:17:16Z
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