41. Excite Italia - Directory Directory Science Agriculture farming practices and systems. La categoriafarming practices and systems nelle altre lingue. Italian ( 12). http://www.excite.it/directory/Science/Agriculture/Farming_Practices_and_Systems

FINANZA SUONERIE METEO OROSCOPO ... AAA/RELAZIONI D I R E C T O R Y makeAD("http://ad.tiscali.com","/SITE=IT.EX.EXCITE/AREA=SEARCH/POS=C1/LANG=IT/AAMSZ=468x60",468,60) Trova Directory - il meglio del world wide web Aiuto Il Mio Excite WEB IMMAGINI ... Agriculture Farming Practices and Systems CREA IL TUO EXCITE! prodotti del momento Cerca anche Servizi Stradario Aziende Informazioni News Borsa Meteo Sport Tempolibero Cinema Programmi TV Oroscopo Arte ... Eros Viaggi Mappe Paesi Hotel Agriturismo ... Aereo e Treni Relazioni Annunci personali Chat Newsgroup Agroforestry ... Sustainable Agriculture 13 siti nella categoria Farming Practices and Systems Buffer Strips: Common Sense Conservation Discusses the uses and benefits of conservation buffers, small areas or strips of land in permanent vegetation, designed to intercept pollutants and manage other environmental concerns. Strategically placed buffer strips in the agricultural landscape can effectively mitigate the movement of sediment, nutrients, and pesticides within farm fields and from farm fields. http://www.nhq.nrcs.usda.gov/CCS/Buffers.html

42. FARMING FOR THE FUTURE Reproduced, with permission, from Reijntjes, C., B. Haverkort, and A. WatersBayer. 1992. farming for the future An introduction to low-external input and sustainable agriculture. 3.2 Indigenous farming systems, practices and knowledge some examples http://www.ciesin.org/docs/004-176a/004-176a.html

Reproduced, with permission, from: Reijntjes, C., B. Haverkort, and A. Waters-Bayer. 1992. Farming for the future: An introduction to low-external input and sustainable agriculture. London: Macmillan. 3.2 Indigenous farming systems, practices and knowledge: some examples Already in early colonial times, perceptive observers commended the intricate and careful cultivation methods of 'native' inhabitants (see Box 3.2 The following examples of indigenous practices illustrate how well farmers in the tropics learned to manipulate and derive advantage from local resources and natural processes, applying the principles of agroecology without knowing that this term exists. The principles of agroecology as discerned by scientists will be presented in Part II of this book, but first let us take a look at some of the practical applications evolved by farmers through a process of informal research and development. Examples of indigenous land-use systems Forest gardens . In many parts of the humid tropics, indigenous systems of forest gardening (silvihorticulture) have been developed. For example, village agroforests have existed in Java since at least the 10th century and comprise today 15-50% of the total cultivated village land. They represent permanent types of land use which provide a wide range of products with a high food value (e.g. fruits, vegetables, meat, eggs) and other products, such as firewood, timber and medicines. In their small plots, often less than 0.1 ha, Javanese peasants mix a large number of different plant species. Within one village, up to 250 different species of diverse biological types may be grown: annual herbs, perennial herbaceous plants, climbing vines, creeping plants, shrubs and trees ranging from 10 to 35 m in height.

43. Dynamic Directory - Science - Agriculture - Farming Practices And Systems Top ScienceAgriculturepractices and systems (145) is made productive, using intercropping and organic farming practices. Manitoba's Management Plus Program - Provides http://www.maximumedge.com/cgi/dir/index.cgi/Science/Agriculture/Farming_Practic

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44. Searchalot Directory For Sustainable Agriculture what is sustainable agriculture? , biologically integrated farming systems, covercrops environmentally and economically sustainable vineyard practices on the http://www.searchalot.com/Top/Science/Agriculture/FarmingPracticesandSystems/Sus

Home Search News Email Greetings Weather ... Global All the Internet About AltaVista AOL Search Ask Jeeves BBC Search BBC News Business Dictionary Discovery Health Dogpile CheckDomain CNN Corbis eBay Education World Employment Encyclopedia Encarta Excite Fast Search FindLaw FirstGov Google Google Groups Infomine iWon Librarians Index Looksmart Lycos Metacrawler Microsoft Northern Light Open Directory SearchEdu SearchGov Shareware Teoma Thesaurus Thunderstone WayBackMachine Webshots WiseNut Yahoo! Yahoo! Auctions Yahoo! News Yahooligans Zeal Sponsored Links Top Science Agriculture Farming Practices and Systems : Sustainable Agriculture Related Web Sites National Center for Research on Agrobiology (Brazil) - Coordinates research projects on sustainable agriculture based on the extensive use of biological processes for partial or total substitution of chemical fertilizers and increased efficiency of their use. Focus is on studying soil microorganisms affecting the transformations and plant availability of nitrogen and other elements in agricultural and natural ecosystems. Leopold Center for Sustainable Agriculture - At Iowa State University. Objectives: 1. to identify and reduce negative impacts of agriculture on natural resources and rural communities 2. to develop profitable farming systems that conserve natural resources 3. to work with ISU Extension and other groups to inform the public of new research findings.

45. Agricultural Practices, Farming Systems And Effects On Rural Areas - Cahiers D'à Agricultural practices, farming systems and effects on rural areas. Cahiersd'études et de recherches francophones / Agricultures. Vol. http://www.john-libbey-eurotext.fr/articles/agr/9/1/29-37/en-resum.htm

Agricultural practices, farming systems and effects on rural areas Summary: Author(s): Jean-Eudes Beuret, Christian Mouchet Keywords: © John Libbey Eurotext

46. UC Winegrape Team Expands Biologically Integrated Farming Systems and cultural control of pests into their production systems; provide on These biologicallyintegrated farming practices, according to Broome, enable farmers to http://danr.ucop.edu/news/Jan-June2002/winegrapebifs.html

June 12, 2002 CONTACT: Lyra Halprin, (530) 752-8664, lhalprin@ucdavis.edu UC winegrape team expands biologically integrated farming systems DAVISFarmers, researchers and agricultural consultants in Monterey, San Luis Obispo and Santa Barbara counties have been awarded money to promote biologically integrated farming practices in Central Coast winegrape vineyards. The Central Coast Vineyard Team (CCVT) has been awarded $99,969 to fund the first year of its three-year project. The team of growers, UC scientists, and consultants will use the Biologically Integrated Farming Systems (BIFS) extension model a team approach to project management with on-farm demonstrations, monitoring of key biological and economic variables, and farmer-to-farmer information flow. BIFS practices are designed to reduce off-farm movement of pesticides and soil while enhancing natural processes. "BIFS demonstration projects involve a high level of cooperation among individuals, public institutions and private companies," said Janet C. "Jenny" Broome, associate director of the UC Davis-based statewide Sustainable Agriculture Research and Education Program (SAREP). "Projects involving such diverse groups represent a new and innovative extension model, but we have accumulated seven years of experience in this grants program. We are moving ahead to help new teams like the CCVT get started with BIFS, building on the experiences of earlier projects while retaining flexibility to respond to local conditions."

47. Engaging Farmers In Biologically Integrated Farming Systems (BIFS) BIFS projects use a systems approach to develop and disseminate innovativefarming practices. This means that pest management, soil http://www.sarep.ucdavis.edu/pubs/progress/99-01/engaging.htm

Home Site Map Calendar Search ... Webmaster Engaging Farmers in Biologically Integrated Farming Systems (BIFS) The BIFS program strives to demonstrate and expand the use of integrated farming systems that have been proven to reduce natural resource degradation of agricultural origin in economically viable ways. BIFS projects use a systems approach to develop and disseminate innovative farming practices. This means that pest management, soil building, wildlife habitat, waste management, irrigation, and other crop and livestock management concerns are addressed in combination whenever feasible. Demonstrations and adaptive research are conducted on-farm through partnerships that make full use of the expertise of farmers, advisors, extensionists and researchers. ACCOMPLISHMENTS The BIFS program has funded nine projects in nine different farming systems. The adoption of biologically integrated systems has generated a number of benefits such as improved soil fertility, decreased erosion and nitrogen leaching, and increased populations of beneficial insects, fishes, migrant birds, and game. The BIFS Biennial Report (January 2001) is available on SAREP's website at http://www.sarep.ucdavis.edu/BIFS/bifs01/

48. EmailPinoy Web Directory . Agroforestry@(19); Community Supported Agriculture (48); Irrigation (39); Precision farming (24...... Top Science Agriculture practices and systems (126), http://search.emailpinoy.com/cgi-bin/webpod.cgi/Science/Agriculture/Practices_an

DISCOVER THE WAY WE POWER YOUR: E-mail Web Page News TOOLS Classifieds Headline News Currency Rate Free Email ... more EMAILPINOY METASEARCH Home Free E-mail Submit your site Free Web Space ... help the entire directory only in Agriculture/Practices_and_Systems Top Science Agriculture : Practices and Systems Description Agroforestry Community Supported Agriculture Dryland Farming ... Reduced Tillage Farming This category in other languages: Italian Beaverslide Haying - Describes the old practice of harvesting hay in rural Montana using a beaverslide, sickle mowers, side-rakes, and buck rakes. Buffer Strips: Common Sense Conservation - Discusses the uses and benefits of having small areas or strips of land in permanent vegetation, designed to intercept pollutants, prevent soil erosion and manage other environmental concerns. FARmresearch - Links to research projects about implementing site-specific management systems on farms. Integrated Farming Information Network - A forum for information, information exchange and development in integrated farming in Europe. Living With Nature - Information on how an arid area of land is made productive, using inter-cropping and organic farming practices.

49. Texas Cooperative Extension Publications (L5407)* Precision farming A New Approach to Crop Management (L-5177)*Cultural practices. Tillage and Cropping systems (L-5037) Disease control. http://texaserc.tamu.edu/catalog/topics/Farming_Practices.html

You will need the free Adobe Acrobat Reader to view PDF documents. View publication details by selecting titles listed below. Printed copies of Extension publications may be ordered using this order form. Questions about Farming Practices? Contact: Toni Provin Search Catalog: * PDF available online. Farming Practices Explore the Genetic Frontier: What is Biotechnology? (L-5407)* Precision Farming: A New Approach to Crop Management (L-5177)* Cultural practices Tillage and Cropping Systems (L-5037) Disease control Chemigation Workbook 1990 (B-1652) Texas Crop Profile: Onions (E- 18)* Texas Crop Profile: Potatoes (E- 19)* Texas Crop Profile: Spinach (E- 20)* ... Texas Crop Profile: Watermelon (E- 21)* Insect control Chemigation Workbook 1990 (B-1652) Controlling the Pecan Weevil (L-5362)* Explore the Genetic Frontier: Biotechnology and Cotton-Texas' Biggest Crop (L-5408)* Grasshoppers and Their Control (L-5201)* ... The Pepper Weevil and Its Management (L-5069)* Irrigation Calculating Horsepower Requirements and Sizing Supply Pipelines for Irrigation (B-6011)* Center Pivot Irrigation (B-6096)* Economics of Irrigation Systems (B-6113)* Improving Rainfall Effectiveness on Rangeland (E-155)* ... Planning and Operating Orchard Drip Irrigation Systems (B-1663) Soil and fertility management Crop Nutrient Needs in South and Southwest Texas (B-6053)* Feedyard Manure - A Farmland Fertilizer (L-5027) Field Method for Determining Soil Texture (L-2458) Managing Crop Nutrients Through Soil, Manure, and Effluent Testing (L-5175)*

50. Sustainable Agriculture Farming Systems Project - Description 1997. Economic Viability of Organic and Low Input farming systems system and the developmentof practices to optimize N management in cover crop driven systems. http://agronomy.ucdavis.edu/safs/descript.htm

Sustainable Agriculture Farming Systems Project - Description Objectives Unique Features Experimental Design Economic Analysis ... Positive Impacts General Project Description (History) Steadily growing public concerns about pesticides, food safety, environmental quality, groundwater contamination, dependency on finite supplies of fossil fuels and soil and water conservation have led many growers and researchers to consider alternative means of agricultural production. New research in this area is generally labeled "sustainable agriculture." Practices commonly associated with sustainable management include reduced use of chemicals and fossil fuels, maximum use of on-farm inputs, crop nutrient recycling, and increased use of diversified crop rotations that enhance soil cover and fertility. Objectives In 1988 a group of farmers and UC researchers met at UC Davis and planned a large interdisciplinary project with three main objectives. The primary objective is to compare conventional, low-input, and organic farming systems with respect to the following factors: The abundance and diversity of weed, pathogen, arthropod and nematode populations.

51. Sustainable Agriculture Farming Systems Publication Abstracts farming practices and crop production costs are carefully documented to comparethe various systems' economic performance and biological risks. http://agronomy.ucdavis.edu/safs/abstract.htm

Sustainable Agriculture Farming Systems Publication Abstracts Agronomic, Economic, and Environmental Comparison of Pest Management in Conventional and Alternative Tomato and Corn Systems in Northern California. Changes In Soil Chemical Properties Resulting From Organic And Low-Input Farming Practices Dynamics Of Soil Microbial Biomass And Activity In Conventional And Organic Farming Systems. Ground Beetle Abundance and Community Composition in Conventional and Organic Tomato Systems of California's Central Valley ... An Interdisciplinary, Experiment Station-Based Participatory Comparison of Alternative Crop Management Systems for California's Sacramento Valley M. S. Clark, H. Ferris, K. Klonsky, W.T. Lanini, A.H.C. vanBruggen, and F.G. Zalom. 1998. Agronomic, Economic, and Environmental Comparison of Pest Management in Conventional and Alternative Tomato and Corn Systems in Northern California. Agriculture, Ecosystems, and Environment M.S. Clark, W.R. Horwath, C. Shennan, and K.M. Scow. 1998. Changes In Soil Chemical Properties Resulting From Organic And Low-Input Farming Practices. Agronomy Journal (in press) N. Gunapala And K. M. Scow. 1998. Dynamics Of Soil Microbial Biomass And Activity In Conventional And Organic Farming Systems.

52. Home > Agriculture > Farming Methods, Techniques And Equipment > Agricultural Sy FAO (Food and Agriculture Organization) Integrated Production systems site, which andinformation is provided on regional projects and good farming practices. http://agrifor.ac.uk/hb/a5ac058207402da38d5c919f62c7c66c.html

Home Agriculture Farming methods, techniques and equipment Agricultural systems Agricultural Production Systems Research Unit : APSRU Established in 1990, the Agricultural Production Systems Research Unit (APSRU) is an Australian research project that aims to "facilitate research that would impact on how agricultural production systems are managed", and focuses on crop and soil management, and the computer simulation of farming systems. The Web site provides information on the background of APSRU and its staff, research plans and current research projects, as well as access to simulation models including Whopper Cropper and HowWet, links to other research projects, a bibliography of publications, and information on some current production systems. Links to related Web sites are also provided. Australia agricultural production farming systems research research institutes ... Agricultural systems Homepage of the journal Agricultural Systems, which is published monthly by Elsevier Science and focuses on articles that cover all aspects of farming systems, including methodological approaches to systems analysis in agriculture. On the site, the contents of journal issues from 1995 onwards can be searched or browsed, with abstracts freely available. Full text is only available to subscribers, and is provided in PDF format (requires Adobe Acrobat viewer). The site also gives scope details, subscription information and instructions for authors. farming systems journals Center for Integrated Agricultural Systems Homepage of the Center for Integrated Agricultural Systems (CIAS), a research centre that was established in 1989 at the University of Wisconsin with a remit to build sustainable agriculture research programs that respond to the needs of both farmers and non-farmers in Wisconsin, and to involve them in setting research agendas. Information is provided on CIAS, its background, research interests, aims and activities. CIAS research focuses on food systems analysis, urban food systems, speciality crops and added value, grain production and marketing, produce production and marketing, livestock production and marketing, institutional food purchasing choices, and pesticide use and risk reduction. CIAS publications are detailed and many can be viewed freely online using Adobe Acrobat Reader.

53. MEASURES about how farm management across arable, livestock and mixed systems affects the takeup be and will there be consequential changes to farming practices and do http://www.sri.bbsrc.ac.uk/science/mdsg/measures.htm

Mathematics Subheadings on this page: Objectives Benefits and Products The Integrated Modelling Framework MEASURES: Multiple Environmental outcomes from Agricultural Systems Objectives To initiate an active forum of stakeholders in environmental impacts of farming systems, to encourage debate, identify key issues and stimulate further research to meet stakeholder needs. Three workshops will be held within the life of the project, and other stakeholder groups will also help shape the current project. Benefits The main benefit of the research will be a user-friendly and robust integrated modelling framework, tried and tested by stakeholders, that can be expanded to consider novel technologies and other farm systems, environmental impacts and stakeholder issues. In addition, the research will highlight the interactions between current and future farm management practices, environmental legislation and environmental impacts. The forum will stimulate the stakeholder community to identify gaps in knowledge, leading to the development of research in priority areas. Products An integrated modelling framework to evaluate scientifically the environmental impact issues within farming systems, in particular those identified as priorities with stakeholders.

54. Organic Farming Systems - NC State in a series of 6 twoday workshops in organic farming systems. Organic Unit is todemonstrate successful organic farming principles and practices. http://www.ncsu.edu/organic_farming_systems/

Organic Farming Systems About Us Databases Internship Progam Links ... Guestbook Organic production represents the largest growth segment nationwide in agriculture today. The organic industry is worth $6 billion (2000), and has grown at a rate of 24% per year for the last eight years. Consumer demand for organic food has increased the need for more research and education in this area. In 1994 the Center for Environmental Farming Systems was established at the North Carolina Department of Agriculture Cherry Farm near Goldsboro. This unique Center is a partnership among North Carolina State University, North Carolina Agriculture and Technical State University, North Carolina Department of Agriculture and Consumer Services, non-governmental organizations, and other state and federal agencies, farmers and citizens. In 1998, the Organic Unit (OU) at CEFS had nearly 100 certified organic acres dedicated to research and demonstration projects. Because of flooding due to Hurricanes Fran and Floyd, the Organic Unit was moved to higher ground in 1999, and the certification process initiated again. With approximately 80 acres to be certified organic land, the Center for Environmental Farming Systems is one of the largest research/demonstration sites affiliated with a land-grant University in the country. The site is used for research, demonstrations, and education, and serves as a focal point for student and extension agent training. The Organic Systems Unit hosts annual Field Days for farmers and other agricultural professionals.

55. Resources For Life Centered Agriculture: YES! A Journal Of Positive Futures of lowcost, resource- conserving, and environmentally sound farming systems. theloss of productive farmland and to promote sustainable farming practices. http://www.futurenet.org/14foodforlife/resourcesforagriculture.html

home subscribe discussion guides events and links ... about us Food for Life ~ Summer 2000 Resources for life-centered agriculture Table of Contents Resource Guide Index Organizations, ideas, books, and Web sites on life sustaining gardening, agriculture, and food advocacy groups Ecology Action Ecology Action researches and educates about bio-intensive gardening. Publishes How to Grow More Vegetables, by John Jeavons, Ten Speed Press, 1995. Contact: 5798 Ridgewood Rd., Willits, CA 95490 tel: 707/459-0150 fax: 707/459-5409 web: www.growbiointensive.org GRACE Factory Farm Project GRACE helps communities keep out factory farms or close existing ones down. Grace also provides news, testimony, and guest speakers on related issues. Contact: 15 East 26th Street, New York, NY 10010 tel: 212/726-9161 web: www.factoryfarm.org Henry A. Wallace Center for Agricultural and Environmental Policy at Winrock International A research and education organization established to encourage and facilitate the adoption of low-cost, resource- conserving, and environmentally sound farming systems.

56. Sustainable Farming - Land Management Systems - Stubble And Tillage Practices Land Management systems. Stubble and tillage practices. Factors in conservationfarming that reduce erosion From the Australian Journal of Experimental http://www.sardi.sa.gov.au/dhtml/ss/section.php?sectID=590&tempID=64

57. MISSISSIPPI DELTA MANAGEMENT SYSTEMS EVALUATION AREA Increase the knowledge to design and evaluate economical environmentallysoundbest management practices (BMP's) as components of farming systems;; http://wwwmswater.usgs.gov/ms_proj/msea/ars_trifold/

U.S. Department of the Interior U.S. Geological Survey Open File Report 96-342. Mississippi Delta Management Systems Evaluation Area The Mississippi Delta MSEA project, part of a national program titled Agricultural Systems for Environmental Quality (ASEQ) , is being conducted by a consortium of Federal, State, and local agencies. Major objectives of the project are to: Develop alternative and innovative farming systems for improved water quality and ecology in the Mississippi Delta; Increase the knowledge to design and evaluate economical environmentally-sound best management practices (BMP's) as components of farming systems; Assess the effects of these agricultural activities on surface- and shallow ground-water quality; and Increase awareness and promote adoption by farmers and landowners of alternative farming systems to reduce adverse agricultural effects on water resources and ecological processes. The project design involves a hierarchy of BMP's in three research watersheds located in west-central Mississippi (fig. 1).

58. DBSFRC Programs systems project are to 1) develop integrated farming systems that produce and ranchers;and 2) determine the environmental impact of such farming practices. http://www.booneville.ars.usda.gov/dbsfrc.htm

Research Program ARS is the primary in-house research agency within USDA. ARS's vision statement is: Leading America towards a better future through agricultural research and information. ARS conducts research to develop and transfer solutions to agricultural problems of high national priority and provides information access and dissemination to : 1) ensure high-quality, safe food and other agricultural products; 2) assess the nutritional needs of Americans; 3) sustain a competitive agricultural economy; 4) enhance the natural resource base and the environment; and, 5) provide economic opportunities for rural citizens, communities, and society as a whole. Research efforts at the Dale Bumpers Small Farms Research Center contribute to ARS's National Programs in Soil Resource Management (202), Grazingland Management (205), Animal Production Systems (102), and Integrated Farming Systems (207). The Centers research activities embrace 3 important national objectives of the Agricultural Research Service (ARS): Maintaining and improving management of soil, water, and air resources.

59. Organic Food Production. Resource From The Alternative Farming Systems Informati production are to use materials and practices that enhance the ecological balanceof natural systems and that integrate the parts of the farming system into an http://www.nal.usda.gov/afsic/ofp/

Organic Food Production Introduction AFSIC Information Guides USDA Publications, 1992-2002 Resources ... Organic Agriculture Search Tips New report! Recent Growth Patterns in the U.S. Organic Food Market As of Oct. 21, 2002, requires certification by USDA-accredited certifying agent, unless exempted or excluded in Section 205.101 . See AFSIC's Quick Links to National Organic Program informaton. Introduction The recent passage of the National Organic Program Final Rule, coupled with growing consumer support for organic foods, have made farming organically an increasingly viable alternative for many U.S. farmers. In addition, there has been renewed awareness of organic agriculture on the part of public interest groups, marketing organizations, and agricultural researchers. This Alternative Farming Systems Information Center (AFSIC) web site serves as a starting point for those interested in organic production in agriculture. "Organic farming is one of the fastest growing segments of U.S. agriculture during the 1990s. USDA estimates that the value of retail sales of organic foods in 1999 was approximately $6 billion. The number of organic farmers is increasing by about 12 percent per year and now stands at about 12,200 nationwide, most of them small-scale producers. According to a recent USDA study, certified organic cropland more than doubled from 1992 to 1997. Two organic livestock sectors, eggs and dairy, grew even faster." ( USDA News Release, no. 0425.00

60. AFSIC Sustainable Agriculture Information Directory of sites and documents about sustainable agriculture.Category Science Agriculture Sustainable Agriculture...... Caption farming near Klingerstown, Pennslyvania, and People Educational Resourcesand Institutions Related systems and practices Event Calendars Help. http://www.nal.usda.gov/afsic/agnic/agnic.htm

What is Sustainable Agriculture? Publications on Sustainable Agriculture Searchable Sites and Databases Organizations and People Educational Resources and Institutions Related Systems and Practices Event Calendars Help About this service This is an official Agriculture Network Information Center Web Site. Created by USDA, NAL, Alternative Farming Systems Information Center 10301 Baltimore Avenue, Beltsville, MD 20705-2351 What is Sustainable Agriculture? Some terms defy definition. "Sustainable agriculture" has become one of them. In such a quickly changing world, can anything be sustainable? What do we want to sustain? How can we implement such a nebulous goal? Is it too late? With the contradictions and questions have come a hard look at our present food production system and thoughtful evaluations of its future. If nothing else, the term "sustainable agriculture" has provided "talking points," a sense of direction, and an urgency, that has sparked much excitement and innovative thinking in the agricultural world. The word "sustain," from the Latin sustinere (sus-, from below and tenere, to hold), to keep in existence or maintain, implies long-term support or permanence. As it pertains to agriculture, sustainable describes farming systems that are "capable of maintaining their productivity and usefulness to society indefinitely. Such systems... must be resource-conserving, socially supportive, commercially competitive, and environmentally sound." [John Ikerd, as quoted by Richard Duesterhaus in "Sustainability's Promise," Journal of Soil and Water Conservation (Jan.-Feb. 1990) 45(1): p.4. NAL Call # 56.8 J822]

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