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A biofertilizer is a substance which contains living micro-organisms which, when applied to seeds, plant surfaces, or soil, colonize the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrients to the host plant. [1]
This glossary of geography terms is a list of definitions of terms and concepts used in geography and related fields, including Earth science, oceanography, cartography, and human geography, as well as those describing spatial dimension, topographical features, natural resources, and the collection, analysis, and visualization of geographic ...
Herdwick sheep in an extensive hill farming system, Lake District, England.The sheep are free to climb to the unfenced upland area. Extensive farming or extensive agriculture (as opposed to intensive farming) is an agricultural production system that uses small inputs of labour, fertilizers, and capital, relative to the land area being farmed.
An example is that green waste composts are used at much higher rates than sludge composts were ever anticipated to be applied at. [85] U.K guidelines also exist regarding compost quality, [86] as well as Canadian, [87] Australian, [88] and the various European states. [89]
For example, chalk is made up partly of the microscopic calcium carbonate skeletons of marine plankton, the deposition of which induced chemical processes to deposit further calcium carbonate. Similarly, the formation of coal begins with the deposition of organic material, mainly from plants, in anaerobic conditions.
The rhizobacteria commonly applied as inoculants include nitrogen-fixers, phosphate-solubilisers and other root-associated beneficial bacteria which enhance the availability of the macronutrients nitrogen and phosphorus to the host plant.
Other examples are natural enzyme-digested proteins. Decomposing crop residue (green manure) from prior years is another source of fertility. Compost provides little in the means of nutrients to plants, but it does provide soil stability through increasing organic matter.
Agricultural geography is a sub-discipline of human geography concerned with the spatial relationships found between agriculture and humans. That is, the study of the phenomena and effects that lead to the formation of the earth's top surface, in different regions.