Mostrar mensagens com a etiqueta Estados Unidos. Mostrar todas as mensagens
Mostrar mensagens com a etiqueta Estados Unidos. Mostrar todas as mensagens
segunda-feira, 17 de agosto de 2009
domingo, 2 de agosto de 2009
sábado, 4 de julho de 2009
4TH JULY
http://www.flickr.com/photos/bestrated1/23586275/sizes/o/
http://www.flickr.com/photos/marcosreis07/2641288290/sizes/l/
http://www.flickr.com/photos/jmtimages/2641373916/sizes/l/
http://www.flickr.com/photos/jmtimages/2637703969/sizes/l/
http://www.flickr.com/photos/mikemcd/721421721/sizes/o/
http://www.flickr.com/photos/char1iej/2748044713/sizes/o/
http://www.flickr.com/photos/marcosreis07/2641288290/sizes/l/
http://www.flickr.com/photos/jmtimages/2641373916/sizes/l/
http://www.flickr.com/photos/jmtimages/2637703969/sizes/l/
http://www.flickr.com/photos/mikemcd/721421721/sizes/o/
http://www.flickr.com/photos/char1iej/2748044713/sizes/o/
quarta-feira, 1 de julho de 2009
US AGRICULTURAL RESEARCH LINES - 2009
Approaches to developing component strategies include A) incorporating legumes into organic crop rotations to maximize nitrogen fixation, B) composting that provides a productive and safe amendment for organic agriculture, and C) optimal agronomic practices for managing nutrients and production on organic farms. Approaches to determining agroecological principles include investigating the following variables within the Beltsville long-term Farming Systems Project that compares two conventional and three organic rotations, A) crop performance, B) soil nitrogen dynamics in relation to nitrogen inputs, C) soil carbon sequestration and greenhouse gas flux, D) soil biological community structure in relation to soil quality and production performance, and E) soil erosion and nutrient loss potential.
sexta-feira, 12 de junho de 2009
segunda-feira, 18 de maio de 2009
quinta-feira, 19 de março de 2009
sábado, 14 de março de 2009
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