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A biofertilizer used in paddy fields is :

A biofertilizer used in paddy fields is : Correct Answer Azolla pinnata

Concept:

  • 'Biofertilizer' is a substance which contains living microorganism which, when applied to seed, plant surfaces, or soil, colonizes the rhizosphere or the interior of the plant and promotes growth by increasing the supply or availability of primary nutrients to the host plant. Biofertilizers are not fertilizers.
  • Fertilizers directly increase soil fertility by adding nutrients. Biofertilizers add nutrients through the natural processes of fixing atmospheric nitrogen, solubilizing Phosphorus, and stimulating plant growth through the synthesis of growth-promoting substances.

Explanation:

  • The major sources of Biofertilizers include Algae, Fungi, Cyano-bacteria & pteridophyte like Azolla Pinnata.
  • Azolla pinnata serves as a great biofertilizer for paddy crops (rice).
  • It increases the nutrient uptake and grain yield of rice.

Additional Information      

  • Bacillus thuringiensis is used as a biopesticide. It is a vector used for preparing genetically modified organisms that are specific pest resistant. Crop prepared using Bacillus thuringiensis is BT Cotton for control of pest Bollworm.
  • Rhizobium meliloti is gram-negative nitrogen-fixing bacteria. It forms a symbiotic relationship with the roots of plant genera like Medicago, Melilotus, and Trigonella and fixes the atmospheric nitrogen for them.
  • Thermus aquatics is bacterial species that can survive extremely high temperatures. It produces a heat-resistant enzyme called Taq Polymerase that is used in the process of Polymerase chain reaction (PCR).

Related Questions

Regarding the new MSP of Paddy declared by the Government in July 2018, which of the following statements are correct? 1. MSP of Paddy (Common Grade) has been increased by Rs. 200/- per quintal and of Grade A variety by Rs. 160/- per quintal. 2. MSP of Paddy (Common Grade) has been increased by Rs. 160/- per quintal and of Grade A variety by Rs. 200/- per quintal. 3. The new MSP of Paddy (Common Grade) and Grade A variety is Rs. 1750/- per quintal. 4. The new MSP of Paddy (Common Grade) is Rs. 1750/- per quintal and of Grade A is Rs. 1770/- per quintal.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: Only paddy is rice. Some paddy are wheat. Some wheat is vegetables. Conclusions: I. All wheat are paddy. II. Some vegetables can be paddy. III. Some rice is paddy.
A biofertilizer used in paddy fields is:
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The biofertilizer used or the paddy crops is
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Two statements are given, followed by three conclusions numbered I, II and III. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements. Statements: All fields are farm-houses. Some fields are gardens. Conclusions: I. Some farm-houses are fields. II. Some gardens are fields. III. Some farm-houses are gardens.
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