These species are under an unusual selection regime in that their hosts are often isogenic and planted in monoculture. |
Heirloom plants can also help buck the trend of monoculture, in which one variety is grown in vast fields. |
Comparisons between individual P. lanceolata or B. napus plants in monoculture and interspecific competition were made. |
Populations fluctuated with the extent of monoculture, choice of cultivars, and extent of parasites. |
Soil can be seeded within monoculture grass, or trees can be planted widely apart so that they do not become roosts for mynas and starlings. |
This was reported in pure monoculture plantations of alder in Himalaya and in lodgepole pine in North America. |