Agricultural pesticides

Xem 1-20 trên 62 kết quả Agricultural pesticides
  • Researching this thesis with a view to: describe the knowledge, attitude and practice (KAP) of farmer exposure to pesticides; determine disease model and describe some factors related to farmer health in cultivating tea; construction and appreciate of effect of interfere model on human health protection suitably for current conditions in Thai Nguyen.

    pdf24p nguyenthiminh32 12-07-2014 18 3   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Dialkyl phosphate metabolites of organophosphorus in applicators of agricultural pesticides in Majes – Arequipa (Peru)

    pdf8p panasonic09 13-01-2012 22 2   Download

  • Enormous increases in agricultural productivity can properly be associated with the use of chemicals. This statement applies equally to crop production through the use offertilizers, herbicides, and pesticides, as to livestock production and the associated use of drugs, steroids, and other growth accelerators. There is, however, a dark side to this picture and it is important to balance the benefits which flow from the use of agricultural chemicals against their environmental impacts, which sometimes are seriously disadvantageous.

    pdf134p tom_123 14-11-2012 19 2   Download

  • The Ramsar Convention defined the wise use of peatlands as “their sustainable use for the benefit of mankind in a way compatible with the maintenance of the natural properties of the ecosystem.” Land sustainability relates to definite periods and land uses.

    pdf209p crazy_sms 10-05-2012 66 27   Download

  • Despite the tremendous progress that has been achieved in water pollution, almost 40% of the U.S. waters that have been assessed by states do not meet water quality goals. About 20,000 water bodies are impacted by siltation, nutrients, bacteria, oxygen depletion substances, metals, habitat alterations, pesticides, and toxic organic chemicals. With pollution from point sources being dramatically reduced, nonpoint source pollution is the major cause of most water that does not meet water quality goals.

    pdf331p crazy_sms 10-05-2012 71 18   Download

  • Since the middle of last century, the use of organic synthetic pesticides became a widespread practice, in order to better prevent, control and destroy pests. Despite their usefulness in the increment of food production, the extensive use of pesticides during production, processing, storage, transport or marketing of agricultural commodities can led to environmental contamination and to the presence of residues in food.

    pdf416p nhatkyvodanh 05-09-2012 42 16   Download

  • Agricultural biotechnologies apply modern knowledge in molecular and cell biology to produce new varieties and similar genetic materials. The use of genetically modified (GM) crop varieties has grown dramatically since they were introduced in 1995, and large portions of the land allocated to corn, soybeans, and cotton are grown with these varieties. The evidence from the United States, Canada, China, India, Brazil, and Argentina suggests that these applications of biotechnology in agriculture increase yield, reduce the use of pesticides, and save production costs. ...

    pdf712p huetay_1 28-02-2013 19 9   Download

  • Cashew is an important crop in Vietnam, and the government has assigned the development as a national priority gia.Nang cashew productivity has been increased since 2002, but the widespread use pesticides has caused health problems for farmers, animals and the environment. Article IPM program using ants as a key component in the development of Charles Darwin University (CDU) does not use toxic pesticides, but high-yield results. This project is using the CDU of IPM to develop and implement an IPM program that will work in conditions of Vietnam....

    pdf10p xinh_la 10-02-2012 38 7   Download

  • This book is a compilation of 29 chapters focused on: pesticides and food production, environmental effects of pesticides, and pesticides mobility, transport and fate. The first book section addresses the benefits of the pest control for crop protection and food supply increasing, and the associated risks of food contamination.

    pdf0p camchuong_1 04-12-2012 34 7   Download

  • Pesticides are used to protect crops from insects, weeds and diseases both in dryland and irrigated crop production in Viet Nam. However, reliance on pesticides in crop production system has the potential to cause environmental problems due to contamination of waterways and of produce, adversely affecting the Vietnamese environment and human health.

    pdf17p tam_xuan 02-03-2012 11 2   Download

  • A fungicide is a chemical pesticide compound that kills or inhibits the growth of fungi. In agriculture, fungicide is used to control fungi that threaten to destroy or compromise crops. Fungicides for Plant and Animal Diseases is a book that has been written to present the most significant advances in disciplines related to fungicides.

    pdf308p ktct_1669 09-05-2012 112 30   Download

  • Forty-five years ago, agricultural and pharmaceutical chemistry appeared to be following divergent paths. On the agricultural scene industrial companies were concentrating on the synthesis of various classes of compounds and when a successful chemical candidate was discovered, there was a good deal of joy among the synthetic chemists. We were told that as a result of chemistry life would be better and, indeed, it was. Armed with synthetic agrochemicals, the American farmer became the envy of the world....

    pdf291p crazy_sms 10-05-2012 60 16   Download

  • The use of pesticides in the United States has increased dramatically during the last several decades. Hundreds of different chemicals have been developed for use in agricultural and non-agricultural settings. Concerns about the potential adverse effects of pesticides on the environment and human health have spurred an enormous amount of research into their environmental behavior and fate. Much of this concern has focused on the potential for contamination of the hydrologic system, including surface waters.

    pdf353p 951628473 07-05-2012 39 11   Download

  • Gas chromatography has been and it still is, one of the key tools in analytical techniques in many of the advanced research carried out over the globe. This technique has contributed tremendously and was once the main technique in the analysis of specific compounds like volatile compounds, certain pesticides, pharmaceuticals and petroleum products. The advance of this technique has resulted in several tandem instruments with application of other techniques to enhance the results obtained by gas chromatography.

    pdf470p qsczaxewd 22-09-2012 49 11   Download

  • Vietnam has been ranked as one of the most important country in the production of things in the world since 2000. To achieve high productivity, most growers rely heavily on pesticides and chemical fertilizers, leading to increased costs, health problems of farmers, pest resistance, environmental pollution and minimizing the natural enemies and pollinators. To make the production of safe, sustainable and profitable, integrated program improvement (ICI) is necessary.

    pdf89p xau_la 10-02-2012 36 10   Download

  • 5 Pest and disease control The 20th century saw the development of a multitude of chemicals such as fertilisers, pesticides and growth stimulants to aid the modern farmer. These have greatly increased overall yields, but unfortunately have created new problems

    pdf24p trasua1 21-09-2010 41 9   Download

  • The editor has been involved with the safety assessment of proteins used in food production for more than 20 years. During that time, I have answered many questions regarding the safety of proteins developed by Monsanto. Some of the questions were asked by those who were familiar with the safety assessment of small-molecularweight chemicals (pesticides and food additives).

    pdf297p tom_123 14-11-2012 27 9   Download

  • Since the 1940s the use of pesticides has grown steadily at about 11 percent a year, reaching five million T in 1995. Pesticides and fertilizers play a central role in agriculture and contribute to an enhanced food production worldwide. Agrochemical use, mainly in developed countries, is being reduced while organic (no synthetic chemicals) farming methods are being reinvented.

    pdf0p 951628473 07-05-2012 35 8   Download

  • Introduction: Agricultual chemicals include not only pesticides for protecting plants, such as insecticides, germicides, herbicides and rodenticides, but also fertilizers and growth regulating substances being used in agricultural production and horticulture. In poisoning cases with agricultural chemicals, the causative poisons are largely the pesticides. There are many cases, in which the poisoning due to exposure to an organophosphorus pesticide is obvious with clinical symptoms [1].

    pdf8p bigbaby87 01-09-2010 41 7   Download

  • C h Dang Duc Nhan 180 a p t e r 8 Distribution, fate, and impact of pesticides in the tropical marine environment of Vietnam Dang Duc Nhan P E S T I C I D E R E G U L AT I O N I N V I E T N A M History of pesticides and pesticide legislation The history of pesticide use in agriculture in Vietnam is short. Before 1950, malaria was a widespread disease among the Vietnamese people. At that time, French and native physicians trained the people to sleep under nets to protect against Anopheles mosquitoes, which are the...

    pdf40p bengoan741 24-12-2011 34 7   Download

Đồng bộ tài khoản