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 १
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 micro-organisms that restore soil nutrients while maximising ecological advantages and reducing environmental dangers.
उत्तर २
Microbes in soil breakdown organic substances, increasing its fertility. Rhizobium bacteria symbiotically occupy nodules on the roots of leguminous plants, converting atmospheric nitrogen into organic forms that the plant can use as a nutrient. Free-living bacteria in soil, such as Azospirillum and Azotobacter, fix atmospheric nitrogen, increasing soil nitrogen levels.
Notes
Students should refer to the answer according to the question.
APPEARS IN
संबंधित प्रश्न
Microbes can be used to decrease the use of chemical fertilisers and pesticides. Explain how this can be accomplished.
What is a heterocyst?
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?
Explain the interrelationship between organic farming and biofertilizers, with the help of any three suitable examples.
How does the activity of each one of the following help in organic farming?
Cyanobacteria
Name any two bacterial biofertilizers.
______ associated with plants like Azolla and Cycas can be used as a biofertilizers.
State any three benefits of mycorrhiza.
State any three benefits of Biofertilizers.
Which of the following is a free-floating aquatic fern?
Which of the following is one of the basic elements considered in green revolution?
By application of ____________ yield of paddy field can be increased.
Which of the following is/are symbiotic nitrogen fixing microbe?
Which of the following statements are CORRECT regarding Anabaena and Frankia?
Mycorrhiza forms symbiotic association with ____________ of higher plants.
The biological agent which is used to kill or check proliferation of disease causing agents is called ____________.
Which of the following symbiotic microorganisms is nitrogen-fixing?
An organism used as a biofertiliser for raising soyabean crop prediction is:
Which one of the following is not a biofertilizer?
Which one of the following is NOT a nitrogen-fixing organism?
Which one of the following is not a nitrogen-fixing organism?
Match the pairs:
| Column A | Column B | ||
| (i) | Compost making biofertilizer |
(a) | Azotobacter |
| (ii) | N2 fixing biofertilizer | (b) | Mycorrhiza |
| (iii) | Fungal biofertilizer | (c) | Agrobacterium |
| (iv) | Phosphate solubilizing biofertilizer |
(d) | Actinobocteria |
Azolla is used as biofertiliser because it ______.
