Only those cultures which contained a single yeast speck were assumed to be pure cultivations.
Other genera of South American ants - A pterostigma and Cyphomyrmex - make similar fungal cultivations, but they use wood, grain or dung as the substratum instead of leaf fragments.
The resistance to drying out means that onion couch is less affected by rotary cultivations than common couch.
The crop should be kept free of weeds by surface cultivations using a tractor-mounted cultivator between the rows and hand hoeing around the plants.
In a comparison of different tillage regimes in winter cereals, common mouse-ear was favored by reduced cultivations.