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Layer displays major crops in the contiguous US for 2011 at a 1 square mile spatial resolution. This dataset is a resampled subset of the 2011 Cropland Data Layer (CDL), 2011_30m_cdls.img, obtained from United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS). Acreage for corn, soybeans, cotton, and wheat was reclassified from the original 30 meter data and down-sampled to 1 square mile resolution for display on small-scale maps, such as those showing the extent of the lower 48 states. The purpose of the Cropland Data Layer Program is to use satellite imagery to (1) provide acreage estimates to the Agricultural Statistics Board for the state's major commodities and (2) produce...
Since last century, modern agriculture has depended on fossil fuels. New Zealand is one of the three countries with the highest energy input per unit (in agriculture) in the world. Furthermore, in terms of shipping, the influence of increasing fuel costs in the world is greater on New Zealand farming than in other countries. This study examined fuel consumption in wheat production in New Zealand (Canterbury area). Fuel consumption in wheat production was analyzed based on the operational fuel consumption by field machinery. Total fuel consumption in wheat production was estimated at 65.3 l/ha. On average fuel consumption in tillage and harvesting are more than in other operations with 29.6 l/ha (45%) and 18 l/ha...
Yields of winter wheat, silage maize and grain maize in the main arable areas of the European Union (E.U.) were calculated with a simulation model, WOFOST, using historical weather data and average soil characteristics. The sensitivity of the model to individual weather variables was determined.Subsequent analyses were made using climate change scenarios with and without the direct effects of increased atmospheric CO 2. The impact of crop management in a changed climate was also assessed. The various climate change scenarios used appear to yield considerably different changes in yield, both for each location and for the E.U. as a whole.


map background search result map search result map Major Crops in the Contiguous US, 2011 Major Crops in the Contiguous US, 2011