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Sunday, 18 February 2018

Which of the following plant is not helpful in nitrogen fixation?

  By GK Planet Team       Sunday, 18 February 2018
Q. Which of the following plant is not helpful in nitrogen fixation?

A. Gram
B. Pea
C. Bean
D. Paddy

Answer: Paddy

Nitrogen Fixation

Nitrogen fixation is a process by which nitrogen in the Earth's atmosphere is converted into ammonia (NH3) or other molecules available to living organisms.

Biological nitrogen fixation (BNF) is the term used for a process in which nitrogen gas (N2) from the atmosphere is incorporated into the tissue of certain plants. Only a select group of plants is able to obtain Nitrogen this way, with the help of soil microorganisms.
Plants that contribute to nitrogen fixation include the legume family – Fabaceae – with taxa such as clover, soybeans, alfalfa, lupins, peanuts, and rooibos. They contain symbiotic bacteria called Rhizobia within nodules in their root systems, producing nitrogen compounds that help the plant to grow and compete with other plants. When the plant dies, the fixed nitrogen is released, making it available to other plants and this helps to fertilize the soil. The great majority of legumes have this association, but a few genera (e.g., Styphnolobium) do not. In many traditional and organic farming practices, fields are rotated through various types of crops, which usually includes one consisting mainly or entirely of clover or buckwheat (family Polygonaceae), which were often referred to as "green manure."

Nitrogen Fixing Plants

Bushes & Shrubs 

  • Broom Shrubs 
  • Honeybush 
  • Pea Shrubs 
  • Rooibos 

Flowers 

  • Indigo (all Indigofera genus) 
  • Lupins 
  • Wisteria, American 
  • Wisteria, Japanese 
  • Wisteria, Kentucky 

Fruits. Vegetables. & Ground Nuts 

  • Ahipa 
  • Beans, Garbanzo 
  • Beans, All other garden (black, anasazi, lima, kidney etc.) 
  • Beans, String 
  • Beans, Bush 
  • Beans, Snap 
  • Breadroot (Prairie Turnip) 
  • Jicama 
  • Lentils 
  • Peanut (Groundnut) 
  • Peas, Green 
  • Peas, Snap 
  • Peas, Snow
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