I went to KEFRI Muguga research center to learn about NFT's (Nitrogen Fixing Trees). They showed me their laboratory and provided seeds for excelent agroforestry tree Calliandra calothyrsus. I got also their product: biofertilizer KEFRIFIX (Rhizobium Legume Inoculant) for Caliandra calothyrsus and Sesbania sesban used to enhance its biological nitrogen fixing ability.
KEFRI (Nairobi, Muguga - main entrance of bio-technology laboratory)
Tree greenhouses at KEFRI.
One of their experiments: these two tree species grow well in one package but they die soon when they grow separately.