The knowledge behind the practice of building the daldal is now known to all male members of the community, but some Irob men are regarded as more skilful than others in adapting and improving the daldal and in experimenting with different ways of using the niches that they have created for crop, grass and tree production.

UNESCO: Title

Rain over the summer has meant a poorer quality of grass silage, and the farm's maize crop is also expected to produce lower yields when it is harvested in the coming weeks.

BBC: Richard Downes

All organic crop rotations contain three to four years of no ploughing because grass leys use the sun's energy to fix nitrogen for subsequent crops in place of oil-based artificial fertiliser.

ECONOMIST: Organic matter