Download or read book Classifying Cambodian Soils from an Agronomic Perspective written by P. F. White and published by . This book was released on 1995* with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Soils Used for Rice Production in Cambodia written by P. F. White and published by Int. Rice Res. Inst.. This book was released on 1997 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rainfed Lowland Rice written by Jagdish Kumar Ladha and published by IRRI. This book was released on 1998 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and background; Characterization of environments; Nutrient balances; Managing organic matter; Nutrient x water interactions; Soil physical constraints and nutrient availability; Germplasm for nutrient efficiency.
Download or read book Cambodia Agricultural Productivity Improvement Project Agronomy Component written by Ian R. Hancock and published by . This book was released on 1996 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cambodian Agriculture written by Timothy S. Thomas and published by Intl Food Policy Res Inst. This book was released on 2013-08-22 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cambodia has been identified as one of the most vulnerable countries to climate change, given the predicted changes in temperature and precipitation, the share of labor in agriculture, and the countrys low adaptive capacity due to widespread poverty. In this study, we use climate data from four general circulation models (GCMs) to evaluate the impact of climate change on agriculture in Cambodia by 2050. We used the Decision Support System for Agrotechnology Transfer crop modeling software to evaluate crop yields, first for the 19502000 period (actual climate) and then for the climates given by the four GCMs for 2050. We evaluated crop yields for eight different crops at 2,162 points in Cambodia, using a grid of 10-kilometer squares, for 2000 and 2050. For each crop, we searched for the best cultivar (variety) in each square, rather than assuming the same cultivar to be used in all locations. We also searched for the best planting month in each square. We explored potential gains from changing fertilizer levels and from using irrigation to compensate for rainfall changes. This analysis indicates that when practiced together, using improved cultivars better suited for the changing climate conditions and adjusting planting dates can lessen the impact of climate change on yields, including for both wet- and dry-season rice. In addition, the analysis shows that losses in yield due to climate change can be compensated forfor many cropsby increasing the availability of nitrogen in the soil. To provide context to the modeling analysis, a survey of 45 communes was conducted using focus group discussions to solicit information on agricultural practices. Questions were asked about fertilizer, irrigation, seeds, tillage, and pest management, as well as about natural disasters and how farmers respond. Key results indicate that in response to extreme weather, only 7 to 16 percent of farmers report changing crop variety and only 20 percent of farmers report changing planting dates. Since the modeling results indicate that adaptation to climate change by changing crop variety and planting dates will be critical in order to avoid yield losses over the next 40 years, it is recommended that farmers expand their capacity to adapt in this way. In addition, every commune reported using some type of chemical fertilizer; however, in a typical commune, only 50 percent of the farmers were using any chemical fertilizer. This indicates that there is room to increase the use of chemical fertilizers. Finally, focus group participants were asked to name the top three natural disasters of concern. Drought was the most cited, reported in 44 of the 45 communes (98 percent), while flooding was cited in 67 percent of the communes surveyed. Despite this, in fully 58 percent of the communes, farmers reported taking no action in response to floods. In response to drought, farmers reported switching to other crops in 16 percent of the communes, and changed planting dates in 19 percent, while only 7 percent of the communes reported no adaptation in farming practices. These findings indicate the need for intervention to help farmers deal with floods in particular, and to determine whether strategies for adapting to drought are the best suited to mitigate crop loss.
Download or read book Rice Production in Cambodia written by Harry J. Nesbitt and published by Int. Rice Res. Inst.. This book was released on 1997 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice in the Cambodian economy: past and present; Topography, climate, and rice production; Soils and rice; Rice-based farming systems; Rice ecosystems and varieties; Pest management in rice; Farm mechanization; Capture and culture ricefield fisheries in Cambodia; Constraints to rice production and strategies for improvement.
Download or read book Major Soil Groups of the World written by Jean-Paul Legros and published by CRC Press. This book was released on 2012-09-20 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: This profusely illustrated book gives an exhaustive account of the principal types of soils of our planet. The "progressive descent of weathering fronts" model, recognized and used by eminent international scientists is the guiding principle of choice to link the observations and to give the reader a synthetic and coherent view of the differentiation of soils. In each case, the introductory reminders summarize the physicochemical and mineralogical principles necessary for understanding the text. The nomenclatures rely systematically and simultaneously on the two most commonly used classifications: Soil Taxonomy and World Reference Base. This reference manual is aimed at students of the undergraduate and graduate courses, but is also intended for workers and scientists in this subject area (geologists, pedologists, agronomists, land-use planners, foresters, etc.) as well as for all those concerned with or interested in protection of the environment.
Download or read book Resource Management in Rice Systems Nutrients written by V. Balasubramanian and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 359 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rice is the major staple food in Asia, and food security means rice security for most Asians. By the year 2025, we need to produce about 60% more rice than we do today to meet the growing demand. Efficient use of inputs is vital to safely produce the additional food from limited resources with minimal impact on the environment. This book reviews emerging knowledge-intensive technologies and decision aids for improved nutrient management in rice, technology adoption constraints at the farm level, and innovative approaches for field evaluation and promotion of new technologies to farmers. It is highly useful to rice scientists and development workers, students of agronomy, soil science, and plant nutrition, and crop consultants and extension workers in rice all over the world.
Download or read book Guide to Upland Cropping in Cambodia written by Stephanie Belfield and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Classification written by and published by . This book was released on 1960 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book South Jersey Farming written by Cheryl L. Baisden and published by Arcadia Publishing. This book was released on 2006 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: By 1876, the year Abraham Browning christened New Jersey the Garden State, South Jersey was already renowned as a leader in the farming industry, supplying the region with everything from apples to zucchini. It was here that Dr. T. B. Welch produced the grape juice that remains a favorite today, Elizabeth White first cultivated the blueberry, Seabrook Farms became the birthplace of frozen vegetables, Campbell Soup and others canned vegetable-fueled foods, and a colonel transformed the tomato's reputation from deadly to delectable. South Jersey Farming pays tribute to this rich agricultural past.
Download or read book Agricultural Classification of Soils written by Ohio Agricultural Experiment Station and published by . This book was released on 1905 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book IRRI 1997 1998 written by International Rice Research Institute and published by Int. Rice Res. Inst.. This book was released on 1998 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sharing the responsibility; Using biodiversity to manage pests; Sharing the seeds; Beyond rice: wide crosses broaden the gene pool; Teaching people to save seeds; Delivering diversity to the field; Partners in rainfed rice breeding; Cultural diversity through genetic diversity; The geometry of rice; Program highlights; Irrigated rice; Rainfed lowland rice; Upland rice; Flood-prone rice; Cross-ecosystems research; Conserving and promoting genetic diversity; Information and knowledge exchange; Training; Strengthening international partnerships; Finance and administration; IRRI board of trustees, 1998; Internationally and nationally recruited staff, 1997; Institutions collaborating with IRRI; Consultative Group on International Agricultural Research.
Download or read book Agriculture irrigation and poverty reduction in Cambodia written by de Silva, S.[Author]; Johnston, R.[Author]; Senaratna Sellamuttu, S.[Author] and published by WorldFish. This book was released on with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is a contribution to an assessment of the current status of agriculture in Cambodia, focusing on the linkages between agriculture and water, mainly in the form of irrigation. It seeks to view current government policies on agriculture and irrigation in the context of experiences on the ground, as communicated through the many field studies that cover varied aspects of performance in the agriculture sector and irrigation schemes. In an effort to identify future research areas, this review examines the status quo, and connects or disconnects with stated policy through a broad lens to capture strengths and challenges across crop production, irrigation management and post-harvest contexts. It places irrigation under scrutiny in terms of its value as a major area of government expenditure in recent years, and asks whether it presents the best potential for future gains in productivity, when compared with the prospects offered by investments in other aspects of agriculture. The fieldwork and review of current literature that form the basis of this report were undertaken at the request of, and partly funded by, the Australian Centre for International Agricultural Research (ACIAR). It is also intended to contribute knowledge to the CGIAR Research Program on Aquatic Agricultural Systems (AAS) led by WorldFish, who co-funded the activities.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1972 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Classification written by United States. Soil Conservation Service and published by . This book was released on 1960 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soils Ecosystem Processes and Agricultural Development written by Shinya Funakawa and published by Springer. This book was released on 2017-05-16 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main objective of this book is to integrate environmental knowledge observed in local agriculture, based on the understanding of soils science and ecology, and to propose possible technical solutions and a more integrated approach to tropical agriculture. The chapters describe and analyze the ecological and technical countermeasures available for mitigating environmental degradation due to the increasing agricultural activities by humans, based on our scientific understanding of traditional agriculture in the tropics. This is an effective approach, as such ecological and technical tools previously involved in traditional activities are expected to be easily incorporated into present agricultural systems. The book starts with a rather classical pedological issue and analyzed traditional agricultural practices with different resource management strategies in terms of their modification of natural biological processes. It focuses on the present situation of tropical agriculture; that is, resource utilization in modern agriculture after application of technical innovation (increased application of chemical fertilizers as well as agricultural chemicals). Here, possible technical approaches to resource management that reasonably support agricultural production whilst mitigating environmental degradation are discussed. The negative impacts of agricultural development on our environment are rapidly growing, yet we are increasingly dependent on the agricultural sector for food and energy. The situation is similar in the tropics, where subsistence agriculture with low input management has long comprised most agricultural systems. Comparison of ecological and/or agronomical studies between different continents are still rare; therefore, this analysis may help clarify what is an essential problem when considering technical transportation beyond continents and/or between temperate and tropical regions.
