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The availability factor of a power plant is the duration it achieves production of electricity divided by the duration that it was planned to produce electricity. In the field of reliability engineering , availability factor is known as operational availability , A o {\displaystyle A_{o}} .
The term "vertical farming" was coined by Gilbert Ellis Bailey in 1915 in his book Vertical Farming.His use of the term differs from the current meaning—he wrote about farming with a special interest in soil origin, its nutrient content and the view of plant life as "vertical" life forms, specifically relating to their underground root structures. [16]
As many farmers farm to meet daily food needs, this can negatively impact nutrition and diet among many families practicing subsistence agriculture. [13] Water availability has a crucial role in determining the productivity of subsistence agriculture, especially in dryland regions.
The number of farms with more than 2,000 acres (810 ha) almost doubled between 1987 and 2012, while the number of farms with 200 acres (81 ha) to 999 acres (404 ha) fell over the same period by 44%. [12] Farm productivity increased in the United States from the mid-20th century until the late-20th century when productivity began to stall. [13]
Design of the ecological farm is initially constrained by the same limitations as conventional farming: local climate, the soil's physical properties, budget for beneficial soil supplements, manpower and available automatons; however long-term water management by ecological farming methods is likely to conserve and increase water availability ...
Rudolf Steiner, occultist philosopher and founder of "anthroposophic agriculture", later known as "biodynamic".. Biodynamics was the first modern organic agriculture. [2] [3] [12] Its development began in 1924 with a series of eight lectures on agriculture given by philosopher Rudolf Steiner at Schloss Koberwitz in Silesia, Germany (now Kobierzyce in Poland).
Plantlife's principal activities in Britain include the management of 4,500 acres (18 km 2) of rare and important plant habitats as nature reserves, lobbying and campaigning in support of wild plant conservation, and organising surveys aimed at generating public interest in wild plants. Plantlife helps run an annual National Plant Monitoring ...
It is a method in which a bud from the plant is joined onto the stem of another plant. [2] The plant in which the bud is implanted in eventually develops into a replica of the parent plant. The new plant can either divert its ways into forming an independent plant; however, in numerous cases it may remain attached and form various accumulations.