Advertisements
Advertisements
प्रश्न
Find out the role of microbes in the following:
Soil
Find out the role of microbes in the following and discuss it with your teacher.
Soil
Advertisements
उत्तर
Microbes are highly useful in maintaining and restoring soil fertility. Soil fertility is determined by its chemical structure and the number and quality of beneficial bacteria. Furthermore, we add biologically derived elements to improve and maintain fertility when the soil’s composition is inadequate and fertility is low. These materials are classified into two basic categories: waste and biofertilisers. We classify wastes into three types: farmyard waste, compost, and green waste. Farmyard waste is the oldest dung known to human beings, consisting of farm animal excrement and plant remains, among other things, that are allowed to partially decompose with the help of soil micro-organisms. These microbes degrade complex organic waste into a dark, amorphous substance known as sludge, which plants can easily consume. Fertiliser dissolves in the soil, improves aeration, and makes it grow better. Biofertilizers are microorganisms that restore soil nutrient levels while maximising ecological benefits and reducing environmental risks.
APPEARS IN
संबंधित प्रश्न
Name the aquatic fern commonly used in paddy fields as a biofertilizer.
Your advice is sought to improve the nitrogen content of the soil to be used for cultivation of a non-leguminous terrestrial crop.
- Recommend two microbes that can enrich the soil with nitrogen.
- Why do leguminous crops not require such enrichment of the soil?
Which one of the following is a free-living bacterial biofertilizer?
______ associated with plants like Azolla and Cycas can be used as a biofertilizers.
State any three benefits of mycorrhiza.
Match the column A with B and rewrite correct pairs.
| A | B | |
| i. | Symbiotic N2 fixing bacteria | VAM |
| ii. | Free-living N2 fixing bacteria | Rhizobium |
| iii. | Phosphate solubilizer | Nostoc |
| iv. | Endomycorrhizae | Microccocus |
______ are nitrogen fixing micro-organisms.
identify the plants with which Anabaena, is associated.
Identify the CORRECT statement regarding Mycorrhiza.
From the following pairs of microbes, identify the pair that has both the microbes that can be used as Biofertilizers.
VAM stands for ______.
Which of the following statements are CORRECT regarding Anabaena and Frankia?
In plant breeding, biofortification is a method ____________.
Mycorrhiza does not help the host plant in ______.
Which one of the following is not a nitrogen-fixing organism?
Why are blue green algae not popular as biofertilisers?
How do mycorrhizal fungi help the plants harbouring them?
Farmers are often suggested to use the following organism in their crop land so as to improve the soil fertility. Explain.
Anabaena
Which one of the following statement is correctly matched?
Azolla is used as biofertiliser because it ______.
How many of the following are the symbiotic nitrogen fixing micro-organisms?
Rhizobium, Anabaena, Frankia, Azotobacter, Nostoc, Clostridium, Beijerinckia, Klebsiella
Which cyanobacterium lives in association with the water fern Azolla and is widely used in paddy fields?
Which of the following is NOT a primary benefit of using biofertilizers in agriculture?
What is the Greek etymological origin of the term 'mycorrhiza'?
