Vendredi 17 août 2018
Frédéric Thomas

Après des séjours aux États-Unis et en Australie, Frédéric THOMAS débute son activité de conseil de terrain et, en 1999, il crée la revue TCS. Il s’appuie aussi sur sa ferme, en Sologne, des terres sableuses hydromorphes à faible potentiel, où il met en œuvre l’AC avec réussite. Il est aujourd’hui l’un des acteurs majeurs du développement de l’AC en France.

Corn that acquires its own nitrogen identified, reducing need for fertilizer

A public-private collaboration of researchers at the University of Wisconsin–Madison, the University of California, Davis, and Mars Inc., have identified varieties of tropical corn from Oaxaca, Mexico, that can acquire a significant amount of the nitrogen they need from the air by cooperating with bacteria.
To do so, the corn secretes copious globs of mucus-like gel out of arrays of aerial roots along its stalk. This gel harbors bacteria that convert atmospheric nitrogen into a form usable by the plant, a process called nitrogen fixation. The corn can acquire 30 to 80 percent of its nitrogen in this way, but the effectiveness depends on environmental factors like humidity and rain.

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