Author: Publisher: INIAP Archivo Historico
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Author: Publisher: INIAP Archivo Historico
ISBN:
Category :
Languages : en
Pages : 30
Book Description
Análisis de suelos y plantas y recomendaciones de abonado
Author: José Alberto Oliveira PrendesPublisher: Universidad de Oviedo
ISBN: 9788483175675
Category : Science
Languages : es
Pages : 164
Book Description
El incremento de productividad en la agricultura de los países desarrollados ha ido unido al empleo de fertilizantes. En ocasiones el empleo excesivo de los mismos no sólo ha aumentado la productividad, sino que se ha convertido en un problema para el medio ambiente. Por otro lado, en los países en vías de desarrollo, la falta de fertilización es una de las causas por las que no se llega a niveles aceptables de abastecimiento alimentario. En la actualidad, se trata de pasar de una agricultura productivista a otra más eficaz, con menor empleo de insumos para reducir los costes de producción, que a la vez evite daños en el medio ambiente. Con este libro se pretende mostrar los aspectos más importantes de las técnicas de análisis de suelos y plantas y a partir de los datos obtenidos con ellas establecer recomendaciones de abonado en praderas, céspedes, viveros y cultivos forestales.
Host Bibliographic Record for Boundwith Item Barcode 30112100650693 and Others
Author: Turrialba
Author: The Economic Development of Southern Honduras
Author: Stanford Research InstitutePublisher:
ISBN:
Category : Honduras
Languages : en
Pages : 238
Book Description
Azucar
Author: Soil Science in Costa Rica
Author: Publisher: Bib. Orton IICA / CATIE
ISBN:
Category : Soil science
Languages : es
Pages : 174
Book Description
Compendium of Sanitation Systems and Technologies
Author: Elizabeth TilleyPublisher:
ISBN: 9783906484570
Category :
Languages : en
Pages : 176
Book Description
Boron
Author: C. SmallwoodPublisher:
ISBN:
Category : Medical
Languages : en
Pages : 224
Book Description
This book evaluates the risks to human health and the environment posed by boron, a naturally occurring element widely distributed in the form of various inorganic borates in the oceans, sedimentary, rocks, coal, shale and some soils. Boron is also used in laundry bleach and in the manufacture of glass, glass products, fertilizers and herbicides, antiseptics, and pharmaceuticals. Since boron is widely detected in drinking-water and occurs naturally in fruits, nuts, and vegetables, the report gives particular attention to health risks associated with exposure of the general population through diet and drinking-water.A section on sources of human and environmental exposure cites evidence that boron enters the environment mainly through volatilization from seawater, volcanoes, geothermal steam, and natural weathering of clay-rich sedimentary rock. Although industrial uses account for much smaller releases, the report notes that all of the boron from the sodium perborate contained in detergents ultimately enters the wastewater system, and is not removed by standard water treatment procedures.
International Code of Conduct on Pesticide Management
Author: Food and Agriculture Organization of the United NationsPublisher: Food & Agriculture Org.
ISBN: 9251091870
Category : Social Science
Languages : en
Pages : 37
Book Description
The understanding that some pesticides are more hazardous than others is well established. Recognition of this is reflected by the World Health Organization (WHO) Recommended Classification of Pesticides by Hazard, which was first published in 1975. The document classifies pesticides in one of five hazard classes according to their acute toxicity. In 2002, the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) was introduced, which in addition to acute toxicity also provides classification of chemicals according to their chronic health hazards and environmental hazards.