Isoptopic evidence of the transfer of nitrogen fixed by legumes to coffee trees

Biotechnologie, Agronomie, Société et Environnement

关键词: coffea-arabica;    nitrogen-fixation;    desmodium-intortum;    leucaena-leucocephala;    nitrogen;    nutrient-uptake;    burundi;    africa;    africa-south-of-sahara;    central-africa;    coffea;    desmodium;    elements;    leguminosae;    leucaena;    mimosoideae;    nonmetals;    nutrition-physiology;    papilionoideae;    physiological-functions;    rubiaceae;   

DOI  :  

来源: DOAJ

【 摘 要 】

The use of isotopic methods has made it possible to quantify the contribution of nitrogen fixed by a coffee plantation. Thanks to the use of the natural 15N abundance assessment technique, we were able to show that, in field condition, roughly 30/ of the nitrogen effectively fixed by a legume (including biomass, roots and root exudates) were transferred to the associated coffee trees. The quantities of N transferred by legume prunings to sole coffee trees were measured to evaluate the amount of N transferred to coffee via litter fall or soil.

【 授权许可】

Unknown