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Soil fertility refers to the ability of soil to sustain agricultural plant growth, i.e. to provide plant habitat and result in sustained and consistent yields of high quality. [3] It also refers to the soil's ability to supply plant/crop nutrients in the right quantities and qualities over a sustained period of time.
Liebig's law has been extended to biological populations (and is commonly used in ecosystem modelling).For example, the growth of an organism such as a plant may be dependent on a number of different factors, such as sunlight or mineral nutrients (e.g., nitrate or phosphate).
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).
Cation-exchange capacity (CEC) is a measure of how many cations can be retained on soil particle surfaces. [1] Negative charges on the surfaces of soil particles bind positively-charged atoms or molecules (cations), but allow these to exchange with other positively charged particles in the surrounding soil water. [2]
Soil temperature depends on the ratio of the energy absorbed to that lost. [68] Soil has a mean annual temperature from -10 to 26 °C according to biomes. [69] Soil temperature regulates seed germination, [70] breaking of seed dormancy, [71] [72] plant and root growth [73] and the availability of nutrients. [74]
In terms of soil chemistry, it places particular emphasis on plant nutrients of importance to farming and horticulture, especially with regard to soil fertility and fertilizer components. Physical edaphology is strongly associated with crop irrigation and drainage. Soil husbandry is a strong tradition within agricultural soil science.
The soil air from the development of deep soil structure, combined with the microbe- and nutrient-rich compost allow the crops to be planted intensively. To plant intensively, beds are 4 to 6 feet (1.2 to 1.8 m) wide, usually 5 ft (1.5 m) and at least 5 feet (1.5 m) long, often 20 feet (6 m), forming a bed of 100 square feet (10 m 2). Crops are ...
Soil formation, also known as ... as does adding fertilizer and lime to soils of low fertility. ... Soils, Weathering, and Nutrients from the Global Change 1 Lectures ...