Essay Seed Germination

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Seed Germination Seed germination is the process in which seeds or spores sprout and begin to grow after being dormant for a period of time. The length of dormancy varies depending environmental conditions in which the seed is surrounded by. The environmental conditions that determine when a seed will begin to germinate are the temperature, oxygen, the amount of light, and the supply of water (Germination, accessed 23 February 2010, http://www.answers. com/topic/germination). For a seed to begin germinating the temperature should be between 25 to 30 degrees Celsius. Radish seeds however prefer to grow in cooler temperatures from10 to 18 degrees Celsius. The seed also requires large quantities of oxygen to start germination which is…show more content…
However if plants get too much water the can not get any air from the soil which is used in respiration. The soil becomes so damp that it encourages disease, causing organisms, which may affect the plant as well as rotting the roots. Lack of nitrogen in the may also cause the leaves to turn yellow and fall off. ( affect _plant_ growth) The type of soil also affects germination and the growth of the plant. The soil is important as is provides nutrients such as potassium, nitrogen and phosphorus which is essential for their growth and survival. There are many different soils and mixtures that can be used for example (potting mix, garden soil, Mulch and manure) which all contain different ingredients (Plant Nutrients, accessed 10 March 2010, nutrient.htm). A general potting mix contains horticulture sand, composted pine bark, living micro organisms (bacteria, fungi, protozoa), base fertilizer and compost. Potting is a blend of composted organic material suitable for all indoor and outdoor plants. Some Potting mixes also contain a granular wetting agent. Garden soil generally consists of a mixture of compost, sandy loam, natural fertilizer and granular wetting agent. Garden soil is suitable for growing vegetables, flowers, herb gardens, roses, shrubs and tree planting. Garden soil does not compacts and settle hard which allows for greater development and
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