Group items tagged chemical - Biology Project BradfordA

shared by Tori Peacock on 13 Apr 10 - Cached

shared by Tori Peacock on 15 Apr 10 - Cached

shared by blaire stillwell on 09 Apr 10 - Cached

Sixteen chemical elements are required for the growth of all plants: carbon, oxygen, and hydrogen (these three are obtained from carbon dioxide and water), plus nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, manganese, zinc, copper, boron, molybdenum, and chlorine. Some plant species also require one or more of the elements cobalt, sodium, vanadium, and silicon.
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13 essential mineral nutrien
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J. R. Brown (ed.), Recommended Chemical Soil Test Procedures for the North Central Region, Missouri Agricultural Experiment Station, Columbia, 1998
- Laura Bradford on 09 Apr 10
  
  The article highlighted is worth looking up. Contains information on experimental procedures and how to handle your soil samples.
  
  <div class="cArrow"> </div><div class="cContentInner">The article highlighted is worth looking up. Contains information on experimental procedures and how to handle your soil samples.</div>
  
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shared by Pascale Michelon on 11 Apr 10 - Cached

(Table 5)
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Hormones are produced naturally by plants, while plant growth regulators are applied to plants by humans
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- Pascale Michelon on 11 Apr 10
  
  This is interesting because it shows you that if you want to manipulate hormones in an experiment you can use plant growth regulators to mimic the action of hormones.
  
  <div class="cArrow"> </div><div class="cContentInner">This is interesting because it shows you that if you want to manipulate hormones in an experiment you can use plant growth regulators to mimic the action of hormones.</div>
  
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There are five groups of plant-growth-regulating compounds: auxin, gibberellin (GA), cytokinin, ethylene, and abscisic acid (ABA).
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Ethylene is unique in that it is found only in the gaseous form. It
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induces ripening, causes leaves to droop (epinasty) and drop (abscission), and promotes senescence.
- Pascale Michelon on 11 Apr 10
  
  The effects of ethylene (promotion of both aging/death and ripening) may explain why just one bad apple in a basket may spoil the whole bunch.
  
  <div class="cArrow"> </div><div class="cContentInner">The effects of ethylene (promotion of both aging/death and ripening) may explain why just one bad apple in a basket may spoil the whole bunch.</div>
  
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