Tuesday, December 17, 2019
Conservation Agriculture A Management System That...
Literature review of the important aspects of study has been divided under the following heading and sub-headings which are stated in this chapter. Conservation agriculture is a management system that maintains a soil cover through surface retention of crop residues with no till/zero and reduced tillage. CA is explained by FAO (http://www.fao.org.ag/ca) as it is a concept of resource saving agricultural crop production system which is based on enhancing the natural and biological processes above and below the ground. According to Dumanski et al. (2006) conservation agriculture (CA) is not ââ¬Å"business as usualâ⬠, based on maximizing yields while exploiting the soil and agro-ecosystem resources. Rather, it is based on optimizing yields and profits, and achieving a balance of agricultural, economic, and environmental benefits. It promotes that the combined social and economic benefits gained from combining production and protecting the environment, including reduced input and labor costs, are greater than those from production alone. With CA, farming communities become sources of healthier living environments for the wider community through reduced use of fossil fuels, pesticides, and other pollutants, and through conservation of environmental integrity and services. As per FAO definition CA is to achieve acceptable profits, high and sustained production levels, and conserve the environment. It aims at acting against the process of degradation inherent in the conventionalShow MoreRelatedSoil Conservation4638 Words à |à 19 PagesINTRODUCTION Soil is the precious gift of nature to the mankind. All the plant family, animal kingdom and human society at large depend upon soil for their sustenance directly or indirectly.à Ironically, soil is the most neglected commodity on the earth. Shifting cultivation on the hill slopes, non-adoption of soil conservation techniques, and over exploitation of land for crop production due to population stress, leadsà to enormous soil erosion. It will take hundreds of years to form an inch of soil, butRead MoreCauses and Effects of Watershed Degradation7239 Words à |à 29 Pages11 2.8 Improper crop rotations 11 2.9 Unbalanced fertilizer use 11 2.10 Pests and diseases 11 3. Underlying causes of degradation Page 12 3.1 Land shortage 12 3.2 Land tenures 12 - 13 3.3 Economic pressures 13 3.4 Poverty 13 3.5 Population increase 14 3.6 Wind erosion 14 3.7 Over pumping of ground water 14 4. Effects of Watershed Degradation Page 15 4.1 Soil erosion 15 - 16Read MoreThe Effect Of Surface Residues On Weeds2969 Words à |à 12 PagesCrop residue may be kept in the field in both CT and NT systems (CT+Res and NT+Res, respectively). In CT+Res the residue is incorporated into the soil, with the depth of mixing dependent upon type of tillage. Although incorporated residue may affect weeds via altered nutrient dynamics, the effects will be highly dependent on the type of tillage used, the carbon to nitrogen ratio of the residue, the type of soil, and the environment ââ¬â it will therefore be difficult to extract useful generalities (LiebmanRead MoreThe Effects Of Soil Management On Environmental Quality And Production Of Agriculture10666 Words à |à 43 PagesLiterature Review Capacity of a soil to function in supporting important ecosystems without producing a negative interaction with the environment is referred to as soil quality (Larson and Pierce, 1991). This concept integrates physical, chemical and biological properties of the soil (Idowu et al, 2009). As there is an increased awareness regarding the impact of soil management on environmental quality and production of agriculture (Doran and Parkin, 1994), this concept of soil quality has gained increasedRead MoreThe Widespread Adoption of Zero and Conservation Tillage Technology in Canada2929 Words à |à 12 Pagesin the last 160 years from about 88% share in 1851 to about 18% share in 2011 (Statistics Canada, 2012). In 2011, the rural population was about 6.3 million which is about 18.8 % of the entire population (33,476,688) at that time. The shift from agriculture to industrialization has been identified as one of the factors contributing to decline in rural population in Canada (Statistics Cana da, 2013). The advent of Industrialization has supported the evolutionary change in agricultural practices. GenerallyRead MoreSexually Transmitted Diseases35655 Words à |à 143 Pagesbiomolecules of life 72-76 Unit 4 Energy in the Community Electricity 77-78 Heat 78-81 Light 82-91 Sound 92 Simple Machines 93-99 Unit 5 The Physical Environment Weather and Climate 100-113 Soils 114-128 Unit 6 Living things in the Environment Plant and animal cells 129 Eukaryotes vs prokaryotes 130 Structures and functions 133-137 Microbes 148-150 Onion and cheek cells 150-151 Ecological study 154 Read MoreAgricultural Science and Resource Management in the Tropics and Subtropics17383 Words à |à 70 PagesTropical Crops Agricultural Science and Resource Management in the Tropics and Subtropics ARTS FIELD AND VEGETABLE CROPS PTS 130 Participants Prof. Dr Marc Janssens Prof. Dr. Jà ¼rgen Pohlan Abrefa Danquah Jones Alfonso Cabrera Keshav Prasad Dahal Dilys Sekafor Kpongor Alex Pacheco Bastas Eduardo Molina Gayosso Alexander R. Mendonza Marina Piatto Said Wali Dadshani Nazli Burcu Ãâ"kten Wintersemester 2002/03 Bonn . Germany 2 Summary Author/Subject Page Table Read More_x000C_Introduction to Statistics and Data Analysis355457 Words à |à 1422 PagesBuyer: Karen Hunt Permissions Editor: Isabel Alves Production Service: Newgenââ¬âAustin Text Designer: Stuart Paterson Photo Researcher: Gretchen Miller Copy Editor: Nancy Dickson Illustrator: Jade Myers; Newgenââ¬âIndia Cover Designer: Stuart Paterson Cover Image: Paul Chesley/Getty Images Cover Printer: Courier Corporation/Kendallville Compositor: Newgenââ¬âIndia Printer: Courier Corporation/Kendallville à © 2008, 2005 Duxbury, an imprint of Thomson Brooks/Cole, a part of The Thomson Corporation. Thomson
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.