Consulta: subjectFacets:"Agricultural sustainability"
Registros recuperados: 10
Data/hora: 12/06/2024 14:52:49

The Economic Impacts of Pollinator Declines: An Approach to Assessing the Consequences
Provedor de dados: 7
Autores: Kevan, Peter G; University of Guelph; pkevan@uoguelph.ca; Phillips, Truman P; University of Guelph; truman@uoguelph.ca.
Since agricultural activities were first recorded, there have been shortages of pollinators. Today it seems that pollination systems in many areas of agriculture are threatened by the inadequacy or lack of sustainable managed, indigenous, or imported pollinators. Pollinator shortages can adversely affect crop production and commodity markets. This paper presents an economic model than can be used to measure some of the economic impacts of pollinator deficits on traded commodities. This economic analysis indicates that consumers of a commodity affected by a pollinator deficit may suffer because the commodity costs more and becomes less available. At the same time, although the producers of the affected commodity may experience crop declines, they may also...
Tipo: Peer-Reviewed Reports
Palavras-chave: Agricultural sustainability; Economics; Food prices; Pollinator abundance; Pollinator availability; Pollinator deficit; Pollinator diversity; Pollinator force; World food supply; Trade.
Ano: 2001

Competitive Capacity and Rhizosphere Mineralization of Organic Matter During Weed-Soil Microbiota Interactions
Provedor de dados: 87
Autores: MATOS,C.C.; COSTA,M.D.; SILVA,I.R.; SILVA,A.A.
ABSTRACT: The competition between weeds and crops is one of the main factors responsible for productivity losses in agricultural fields. This review aimed at presenting and discussing how the interactions between weeds and microorganisms can affect the competitive capacity of weeds and soil physicochemical properties. We also discuss how changes in the elemental stoichiometry of weeds can reflect their competitive and adaptative capacity. Although weeds are more dependent on associations with soil microorganisms than crops for growth, few studies have assessed the contribution of the soil microbiota to their competitive success in agroecosystems. When in competition, plants can change the elemental stoichiometry of their tissues in environments with varied...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rhizosphere priming; Elemental stoichiometry; Soil quality; Agricultural sustainability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100301

Agricultural Sustainability in Marginal Areas: Principles, Policies and Examples from Asia
Provedor de dados: 31
Autores: Tisdell,   Clement A.
Tipo: Working or Discussion Paper
Palavras-chave: South Asia; Agricultural sustainability; Natural resource conservation; Environmental Economics and Policy.
Ano: 1997
URL: http://purl.umn.edu/53635

Agricultural Sustainability and the Introduction of Genetically Modified Organisms (GMOs)
Provedor de dados: 31
Autores: Tisdell,   Clement A.
In order to cater for the predicted growth in global population and aspirations for increased living standards, the world needs to increase substantially its level of agricultural production and sustain agriculture’s increased productivity. New technologies may enable this to occur but they also bring with them increased sustainability problems. There are many complex dimensions to achieving agricultural sustainability such as deciding on what agricultural attributes are worth sustaining and considering what trade-offs in objectives are required. These issues are discussed from a conceptual point of view. It is also shown using economic theory that market-based agriculture limits the opportunity for individual farmers to adopt sustainable agricultural...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural development; Agricultural sustainability; Biodiversity; Co-evolution; Economic sustainability; Genetically modified organisms; GMOs; Monopolisation; Patents; Social sustainability.; Agricultural and Food Policy; Environmental Economics and Policy; Q000; Q010; Q200; Q300; Q500; Q570.
Ano: 2009
URL: http://purl.umn.edu/55335

THE ECONOMIC IMPORTANCE OF CROP ROTATION SYSTEMS: EVIDENCE FROM THE LITERATURE
Provedor de dados: 31
Autores: Gebremedhin,   Berhanu; Schwab,   Gerald.
Agricultural sustainability requires that the individual farm firm be competitive and profitable while simultaneously enhancing environmental quality and the natural resource base upon which the farm firm and agricultural economy depends.  The reliance of conventional agriculture systems on purchased inputs external to the firm presents possible challenges to the long-term sustainability of the system.  Crop rotation systems are one cropping system alternative that can reduce agriculture's dependence on external inputs through internal nutrient recycling, maintenance of the long-term productivity of the land, and breaking weed and disease cycles.  Decision criteria to choose among competing crop rotation systems can include impact on soil quality and...
Tipo: Working or Discussion Paper
Palavras-chave: Agricultural sustainability; External inputs; Soil quality and fertility; Environmental quality; Crop rotations; Comparative economic analysis; Farm profitability.; Crop Production/Industries.
Ano: 1998
URL: http://purl.umn.edu/11690

ASPECTS OF THE SILVOPASTORAL SYSTEM CORRELATED WITH PROPERTIES OF A TYPIC QUARTZIPSAMMENT (ENTISOL) IN MATO GROSSO DO SUL, BRAZIL
Provedor de dados: 90
Autores: Corrêa,Adriany Rodrigues; Montanari,Rafael; Laura,Valdemir Antônio; Melotto,Alex Marcel; Silva,Evelize Nayara Santana da; Pellin,Douglas Martins Pereira; Santos,Anderson Secco dos.
In Brazil, grazing mismanagement may lead to soil and pasture degradation. To impede this process, integrated cropping systems such as silvopasture have been an effective alternative, allied with precision agriculture based on soil mapping for site-specific management. In this study, we aimed to define the soil property that best sheds light on the variability of eucalyptus and forage yield. The experiment was conducted in the 2011/12 crop year in Ribas do Rio Pardo, Mato Grosso do Sul State, Brazil. We analyzed linear and spatial correlations between eucalyptus traits and physical properties of a Typic Quartzipsamment at two depths (0.00-0.10 and 0.10-0.20 m). For that purpose, we set up a geostatistical grid for collection at 72 points. Gravimetric...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geostatistics; Resistance to penetration; Soil management; Agricultural sustainability.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000200438

Edaphic fauna affects soybean productivity under no-till system
Provedor de dados: 63
Autores: Kraft,Elston; Oliveira Filho,Luís Carlos Iuñes de; Carneiro,Mayara Costa; Klauberg-Filho,Osmar; Baretta,Carolina Riviera Duarte Maluche; Baretta,Dilmar.
ABSTRACT: This study aimed to evaluate the relationship of edaphic fauna under a no-tillage system with different levels of soybean productivity [High (NTH), Medium (NTM) and Low (NTL)] in the west of Santa Catarina (Brazil), identifying which chemical and physical variables most affect them, and the best indicators that can be used. Native forest (NF) areas were used as a reference. A total of 207 samples of soil fauna were collected by soil monolith and pitfall trap methods over two years of evaluation in four municipalities. Based on edaphic fauna data, Shannon-Wiener (H’), Pielou (J), Dominance (D), Margalef and Fisher Alpha (α) indices were generated, in addition to the average richness and abundance. Data from NTs were submitted to analysis of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Soil quality; Soil biology; Agricultural sustainability; Conservation system.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000200701

Agriculture and food security challenge of climate change: a dynamic analysis for policy selection
Provedor de dados: 63
Autores: Ahmed,Ferdous; Al-Amin,Abul Quasem; Mohamad,Zeeda Fatimah; Chenayah,Santha.
ABSTRACT This study presents an empirical examination of climate change related to vulnerability impacts on food security and remedial adaptation options as a suitable strategy by prioritizing needs over a 50-year period. An Empirical Dynamic Commutable General Equilibrium Model for Climate and the Economy (EDCGECE) is applied using future strategies for Malaysia against a baseline scenario of existing conditions, following the top-down options. The model takes into account various climatic variables, including climatic damage, carbon cycle, temperature and rainfall fluctuation, carbon emissions, vulnerability and carbon concentrations, which were adapted from national observational predictions of climatic changes caused by global warming from 2015 to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: CGE; Policy development; Strategies; Agricultural sustainability.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000400311

A science framework (SF) for agricultural sustainability
Provedor de dados: 42
Autores: AHMED,FERDOUS; AL-AMIN,ABUL Q.; MASUD,MUHAMMAD M.; KARI,FATIMAH; MOHAMAD,ZEEDA.
The significance of Science Framework (SF) to date is receiving more acceptances all over the world to address agricultural sustainability. The professional views, however, advocate that the SF known as Mega Science Framework (MSF) in the transitional economies is not converging effectively in many ways for the agricultural sustainability. Specially, MSF in transitional economies is mostly incapable to identify barriers in agricultural research, inadequate to frame policy gaps with the goal of strategizing the desired sustainability in agricultural technology and innovation, inconsistent in finding to identify the inequities, and incompleteness to rebuild decisions. Therefore, this study critically evaluates the components of MSF in transitional economies...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Science framework; Sustainable development; Agricultural sustainability; Research and innovation.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000401887

Variability of physical properties of soil and rice grown under cover crops in crop-livestock integrated system
Provedor de dados: 53
Autores: Trevisan,Rodrigo Gonçalves; Freddi,Onã da Silva; Wruck,Flávio Jesus; Tavanti,Renan Rimoldi; Peres,Fernanda Salles Cunha.
ABSTRACT The production systems of upland rice culture in Mato Grosso are not consolidated yet while the effects of soil physical properties and their correlation with rice yield in crop-livestock integrated systems are not defined as well. Therefore, this study determined the spatial variability of physical properties of soil and rice cultivated in no-tillage system under different cover crops, using principal components analysis and geostatistics. The experiment was conducted in Santa Carmen, northern Mato Grosso. A regular grid with 100 sample points distributed in an area of 26,400 m2 was installed. Soil and rice samples were collected to determine rice variables and soil physical properties. The average rice yield was 1.70 Mg∙ha−1, ranging from 0.70...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Orysa sativa; Soil management; Agricultural sustainability.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000100145