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Energy — means all forms of energy products (combustible fuels, heat, renewable energy, electricity, or any other form of energy) Primary energy consumption — means gross inland consumption, excluding non-energy uses; Final energy consumption — means all energy supplied to industry, transport, households, services and agriculture.
Also, a Certified Farm Energy Audit may be required for participation in state or federal energy efficiency programs. [20] An audit of 20 farms in Cumbria showed savings could be made in all areas examined. [21] An example of a farm energy audit in Maine is at the following reference. [22] Maryland has a statewide program entitled EnSave. [23]
Energy crops can also be grown to boost gas yields where feedstocks have a low energy content, such as manures and spoiled grain. It is estimated that the energy yield presently of bioenergy crops converted via silage to methane is about 2 GWh/km 2 (1.8 × 10 10 BTU/sq mi) annually. Small mixed cropping enterprises with animals can use a ...
As of 2015 farm-raised Atlantic salmon had a commodified feed supply with four main suppliers, and an FCR of around 1. [31] Tilapia is about 1.5, [32] and as of 2013 farmed catfish had a FCR of about 1. [8] It is possible for fish to have an FCR below 1 despite obvious energy losses in feed-to-meat conversion.
Indirect consumption includes the manufacture of fertilizers, pesticides, and farm machinery. [239] In particular, the production of nitrogen fertilizer can account for over half of agricultural energy usage. [240] Together, direct and indirect consumption by US farms accounts for about 2% of the nation's energy use. Direct and indirect energy ...
Intensive agriculture, also known as intensive farming (as opposed to extensive farming), conventional, or industrial agriculture, is a type of agriculture, both of crop plants and of animals, with higher levels of input and output per unit of agricultural land area.
Food production per capita since 1961 Grain silos Rice plantation in Thailand Cambodians planting rice, 2004. Agricultural productivity is measured as the ratio of agricultural outputs to inputs. [1] While individual products are usually measured by weight, which is known as crop yield, varying products make measuring overall agricultural ...
Extensive farming can have the following problems: [3] Yields tend to be much lower than with intensive farming in the short term. Large land requirements limit the habitat of wild species (in some cases, even very low stocking rates can be dangerous), as is the case with intensive farming. Less profitable then intensive farming per unit of area.