viernes, 25 de diciembre de 2009

plantas y flores / plants and flowers: A high concentration of carbon dioxide (CO2) makes cereals and other crop plants grow faster and consume less

http://plantas-y-flores.blogspot.com/

A high concentration of carbon dioxide (CO2) makes cereals and other crop plants grow faster and consume less water at a time.

This conclusion was reached by a study released today by German scientists of the Federal Agricultural Research Institute, Forestry and Fisheries Heinrich von Thunen of Braunschweig, northern Germany.

The institute said experts "gassed" for several years a testing ground on which they grew barley, wheat and sugar beet with the concentration of CO2 that is estimated to be achieved in 2050.

As a result of increased CO2 concentration the plants were between 10 and 15 percent more biomass and issued between 5 and 20 percent less water in the atmosphere, elevated moisture in the soil.

The German scientists concluded that plants use water more efficiently at a higher concentration of CO2, something they consider important and that it expects higher future droughts.

In another test with maize also studied the relationship between drought and increased CO2 concentration, for which used the so-called energy corn that grows faster despite high temperatures.

With a CO2 concentration equal to the current generating plants in the dry season by 28 percent from biomass loss was reduced to 11 percent as increased doses of carbon dioxide.

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