Home Scale Permaculture: Interview with Toby Hemenway. ¿Agricultura capaz de una absorción neta de CO2? Ciertas clases de agricultura, ejecutadas a gran escala, parecen ser capaces de lograr que se absorba mucho más dióxido de carbono que el emitido como consecuencia de dicha actividad agrícola y del uso de los productos cultivados.
Un informe elaborado por especialistas del GCEP (Global Climate and Energy Project) de la Universidad de Stanford en California, se hace eco de los resultados alentadores de algunos programas piloto en varias partes del mundo. En particular, destaca la investigación llevada a cabo por el equipo de José Moreira, de la Universidad de Sao Paulo, en Brasil. Usando modelos digitales, Moreira ha determinado que de 1975 a 2007, la producción de etanol a partir de caña de azúcar en Brasil dio como resultado una captura neta negativa de 1,5 toneladas de CO2 por metro cúbico de etanol producido.
Sin embargo, quedan dudas acerca de los efectos a largo plazo que la combustión de etanol puede tener sobre el clima. Información adicional. Bt in organic farming and GM crops - the difference. One of the favourite arguments of the pro-GM lobby in support of Bt-toxin GM crops is that the Bt toxin has been safely used for decades by organic farmers.
Many thanks to Susan Pusztai for the following information which precisely delineates the very considerable differences between the use of Bt in organic farming and the use of the Bt toxin as a transgene in GM crops. This should be read in conjunction with Arpad Pusztai's recent comments, posted to the ngin list, on the gut lesions which have been found in several animal feeding studies on GM crops.--- Bt in organic farming: The bt bacteria, commercially available for organic farming is a preparation of weakened or most often dead bacteria, which is sprayed only in the case of high insect infestation and only onto the affected area.
The bacterium inside the spray contains the pro-form of the so called bt toxin. The actual bacterium, which is not eaten by any insects, degrades in the light/sun/rain pretty fast (less than a day). NOTE! Gaia’s Garden: A Guide to Home-Scale Permaculture. Cover of Gaia's Garden Gaia’s Garden has been the best-selling permaculture book in the world for the last 7 years.
The enlarged, updated 2nd edition is the winner of the 2011 Nautilus Gold Medal Award. The first edition of Gaia’s Garden sparked the imagination of America’s home gardeners, introducing permaculture’s central message: Working with nature, not against her, results in more beautiful, abundant, and forgiving gardens. This extensively revised and expanded second edition broadens the reach and depth of the permaculture approach for urban and suburban growers.
Selected Excerpts from Gaia’s Garden: Ecological gardening—which involves growing a wide range of edible and other useful plants—can be done on any scale. Building and maintaining soil fertility and structureCatching and conserving water in the landscapeProviding habitat for beneficial insects, birds, and animalsGrowing an edible “forest” that yields seasonal fruits, nuts, and other foods Click here to buy Gaia’s Garden —Dr. THE GREEN EXPO 2013. Cultivo de tejidos en la agricultura: fundamentos y aplicaciones. ATTITUDE SEEDBANK Cannabis Seeds. Marijuana.com 420 forums, cannabis legalization news, medical marijuana dispensaries, how to grow marijuana seeds, pass a drug test. Marijuana: Stuff You Might Not Know You Don't Know. ! Buy Cannabis Seeds Online - Herbies Seeds Updated:1st Nov 2012 - Cheap Marijuana Seeds UK.