Indicators of environmentally sound land use in the humid tropics: The potential
roles of expert opinion, knowledge engineering and knowledge discovery
Effect of Biofertilizer Bacteria
(Azospirillumbrasiliensis, Azotobacter
chroococcum, Bacillus megaterium) and earthworms
(Pontoscolex corethrurus) on Zea mays and Phaseolus
vulgaris growth and yield production
Enhancement of growth and reproduction of the tropical
earthworm Polypheretima elongata (Megascolecidae) by addition
of Zea mays and Mucuna pruriens var. utilis litter to the soil