Diversity of legume nodulating bacteria as key variable of c | 15779
International Research Journals

International Research Journal of Agricultural Science and Soil Science

All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Diversity of legume nodulating bacteria as key variable of coffee agro-ecosystem productivity


Rusdi Evizal, Irfan D. Prijambada, Jaka Widada, Donny Widianto and Tohari

The high diversity of Legume Nodulating Bacteria (LNB) was found in soil of agro-ecosystem of legume trees that has been established for long time. Incorporating legume trees as shading in coffee agro-ecosystems would conserve LNB diversity and provide ecosystem services such as N fixation, dinamic shading, and nutrient cycling. The aim of the experiment was to determine of wether legume shaded coffee agro-ecosystems have higher LNB diversity and higher coffee productivity than those of non-legume or sun (no shade) coffee agro-ecosystem. The experiment was conducted in West Lampung District, Indonesia, through out survey and experimental plot of coffee agro-ecosystems consisted of 4-5 years old coffee plot and a quassy experiment plot of 15-16 years old coffee. Types of coffee agroecosystems to be examined were Coffea canephora with shading of legume trees of Gliricidia sepium and Erythrina sububrams, non-legume shade trees of Michelia champaca, and sun coffee (without shade tree). The results showed that coffee agro-ecosystems shaded by legume trees had higher LNB diversity than those of coffee agro-ecosystems shaded by nonlegume trees (Michelia champaca) and coffee agro-ecosystem without shade trees. Diversity of legume nodulating bacteria in the soil may indicate productivity of coffee agro-ecosystems.

Share this article