Soil cores from a historic fen in Switzerland, with similar agricultural management over ~ 140 years, recorded 16 49% loss of 'pre-drainage' organic carbon ('Table 2' of [39]).
Despite enhancing Fe is primary concern to agricultural production, over-accumulated Fe can cause cellular damage since Fe is highly reactive (Conte and Walker, 2011).
The NSMNP is threatened mainly by illegal logging, agricultural expansion, over-hunting and unsustainable fishing practices (DENR 2001 52 4; van der Ploeg et al. 2011).
Does the observed scale-free structure persist as agricultural networks evolve over the growing season?
Agricultural damage totaled over $80 million, and property damage was estimated at $24 million in Tampico and Ciudad Madero alone.
In the United States, watermelon is considered an extremely important agricultural crop, with over 4.2 billion pounds being produced in 2006 and a fresh market value of $434 million [ 3].
For most pesticides evaluated, we found that concentrations in carpet dust were more highly correlated with reported agricultural use over the previous 2 years than over the previous year or 6 months.
And because pesticides are found in nearly every stream in the United States, over 90 percent of wells, and — in urban and agricultural areas — over half the groundwater.
The World Bank estimates that as much as 200m hectares of land in the developing world has been leased to agricultural investors over the past 10 years.
UN trade body Unctad only ranks 11 out of a total of 49 countries as exporters of agricultural products (over half of export revenue).
