Agronomic

Xem 1-20 trên 24 kết quả Agronomic
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: QTL mapping of agronomic traits in tef [Eragrostis tef (Zucc) Trotter]

    pdf13p panasonic06 26-12-2011 22 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: DNA polymorphisms and haplotype patterns of transcription factors involved in barley endosperm development are associated with key agronomic traits

    pdf11p panasonic06 25-12-2011 27 2   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Polymorphisms in monolignol biosynthetic genes are associated with biomass yield and agronomic traits in European maize (Zea mays L.)

    pdf10p panasonic06 25-12-2011 21 2   Download

  • The wide geographical distribution of the rice plant ( Oryza sativa L.) and its long history of cultivation in Asian countries have led to the development of a great diversity of varietal types. Similarly, workers in various rice-growing countries use different terms to designate identical morphological and physiological characters, agronomic traits, gene symbols, and cultural practices. Whereas varietal diversity in germ plasm is desired in rice breeding, variations in nomenclature hinder scientific communication among the workers.

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  • Soil fertility describes soil nutrient status and the factors controlling the supply of nutrients to plants. Continued efforts to improve soil fertility are required to support the world's growing demand for food, fiber, and renewable fuels. Important ecological services provided by soils, such as biodiversity, buffering capacity, and nutrient recycling benefit from the amendments applied to sustain soil fertility. Those amendments need to be applied in a manner that is both economical and practical for the producer to achieve agronomic objectives that are environmentally sound.

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  • Genetically modified foods and food products derived from genetically engineered organisms are among a number of biotechnological developments intended to improve shelf life, nutritional content, flavor, color, and texture, as well as agronomic and processing characteristics. Although in popular parlance the term genetically modified often is used interchangeably with genetically engineered, in this report genetic modification refers to a range of methods used to alter the genetic composition of a plant or animal, including traditional hybridization and breeding.

    pdf254p crius75 07-01-2013 28 9   Download

  • This two-volume book on biomass is a reflection of the increase in biomass related research and applications, driven by overall higher interest in sustainable energy and food sources, by increased awareness of potentials and pitfalls of using biomass for energy, by the concerns for food supply and by multitude of potential biomass uses as a source material in organic chemistry, bringing in the concept of bio-refinery. It reflects the trend in broadening of biomass related research and an increased focus on second-generation bio-fuels.

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  • Due to their usefulness in characterizing and manipulating genetic factors responsible for qualitative as well as quantitative traits,molecularmarkersareconsideredto be valuable tools for crop improvement. Theseusesofmolecularmarkershavebeen invaluable in helping researchers understand complex traits, dissect them into singleMendeliangeneticfactors,andestablishtheirchromosomallocationsviatheuse oflinkagemapsand/orcytogeneticstocks.

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  • The prevailing low food production in sub-Saharan Africa is an issue of great concern especially since Africa south of the Sahara is the only remaining region of the world where per capita food production has remained stagnant. This chapter reviews long-term experiments in Africa in the context of shifting paradigms related to tropical soil fertility management from fi rst external input paradigm right through to the current Integrated Soil Fertility Management (ISFM) approach, which is a culmination of the participatory methods developed along the paradigm shift.

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  • 5 Agronomic methods to control erosion Agronomic methods include those erosion control measures that are related to arable farming. It is concerned with crop cultivation itself as well as tillage operations. Arable farming is an integral part of the natural surroundings.

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  • Increasing attention has also been given to dissecting and understanding diversity in relation to genes underlying important agronomic traits in a number of crops. Molecular phylogenetics and genetic diversity analysis can help to clarify the taxonomic identity and evolutionary relationships of the wild relatives of crop species. These methods can also help prevent misidentification and carefully plan effective germplasm management strategies.

    pdf414p conquynho32 18-09-2012 34 6   Download

  • Soybean is the most important oilseed and livestock feed crop in the world. These dual uses are attributed to the crop's high protein content (nearly 40% of seed weight) and oil content (approximately 20%); characteristics that are not rivaled by any other agronomic crop. Across the 10-year period from 2001 to 2010, world soybean production increased from 168 to 258 million metric tons (54% increase).

    pdf624p phoebe75 19-02-2013 15 6   Download

  • Plants are sessile organisms and as such must have mechanisms to deal with both abiotic and biotic stresses to ensure survival. The term “abiotic stress” includes many stresses caused by environmental conditions such as drought, salinity, UV and extreme temperatures. Due to global climate change it is predicted that abiotic stresses will increase in the near future and have substantial impacts on crop yields (Intergovernmental Panel of Climate Change; http://www.ipcc.ch).

    pdf397p thienbinh1311 13-12-2012 31 9   Download

  • In India, rice, wheat and maize yields per hectare of land have increased three to four fold between 1950 and 2010, mainly due to the adoption of improved agronomic practices. Egg production now ranges between 310–320 per annum per bird. Similarly, feed conversion efficiency in broilers is also at par with developed nations and Indian poultry farmers are now more conscious of the need to increase profits by cutting costs and improving productivity. Balancing of nutrients in poultry rations along with improved mineral supplementation has led to this improved productivity.

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  • J. Sci. & Devel., Vol. 10, No. 4: 576-585 Tạp chí Khoa học và Phát triển 2012 Tập 10, số 4: 576-585 www.hua.edu.vn MUTAGENIC INDUCTION OF AGRONOMICAL AND YIELD CONTRIBUTING TRAITS IN SOYBEAN (GLYCINE MAX (L.) MERRILL) WITH GAMMA IRRADIATION Vũ Đình Hòa*, Nguyễn Văn Giang Faculty of Biotechnology, Hanoi University of Agriculture Thí nghiệm được tiến hành nhằm xác định ảnh hưởng của tia gamma với các liều lượng khác nhau (0, 15, 18, 21 kR) đến cảm ứng đột biến ở các giống đậu tương ĐVN6, ĐT12 và ĐT20.

    pdf10p banhukute 18-06-2013 38 4   Download

  • Microorganisms are single-celled organisms are small, not observed with the naked eye but to use a microscope. The term microbial does not correspond to any taxon in scientific classification. It includes viruses, bacteria, archaea, fungi, microscopic algae, protozoa. Etc.

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  • Until recent years, cultivars’ identification was based only on morphological and agronomic traits. However, recognition of olive cultivars based on phenotypic characters revealed to be problematic, especially in early stages of tree development. Traditionally diversity within and between olive tree cultivars was determined by assessing differences in olive tree, namely leaf shape and color, and olive fruits morphology.

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  • Organic systems are more labor intensive than conventional systems. This higher labor requirement is most often attributed to the increased time monitoring and managing pests. Washington State research statistics indicate that labor hours per acre can be as much as 11% higher for agronomic crops. The increase can be much greater for horticultural crops. Economic Considerations Organic crops can receive price premiums of anywhere from 10% to 200% (or more) over conventionally grown products, according to the USDA Economic Research Service.

    pdf23p cao_can 02-01-2013 22 3   Download

  • Demand for organically produced food products is increasing rapidly in North America, driven by a perception that organic agriculture results in fewer negative environmental impacts and yields greater benefits for human health than conventional systems. Despite the increasing interest in organic grain production on the Canadian Prairies, a number of challenges remain to be addressed to ensure its long-term sustainability. In this review, we summarize Western Canadian research into organic crop production and evaluate its agronomic, environmental, and economic sustainability. ...

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  • Dairies are required to have an NMP to protect water quality from livestock nutrient discharges. Each basic function of the operation, production, collection, storage, transfer, treatment and field application is covered by the plan. The basis for nutrient management is sound agronomic use of solid and liquid manure. The Livestock Nutrient Management Program has inspectors that routinely inspect dairies for compliance with their nutrient management plans and preventing any discharges to surface and ground water....

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