Agriculture is the greatest gainer of biodiversity. The effects of indigenous and modern agriculture on plant diversity were evaluated with survey of wheat fields in North Khorasan in 2009. The results showed that indigenous ...

of phosphorus) of 16 fields were collected in Jajarm region, Iran. Shannon’s diversity index and species richness were used as measures of species diversity. Means comparison showed that use of herbicide versus non-use, loam texture than silt texture...