What Is Manure Definition Types and Advantages
In its most general form, Manure is an organic matter that is obtained from the animal wastes and their decomposing bodies, it is used to improve the quality of soil and increase the yield of crops.
What is Manure?
When plants and animals die and their bodies start to decompose, they are added to the soil in the agricultural land to increase crop production. The decaying bodies act as a natural form of fertilizer and are very cost-effective. The human and animal excreta is also used as manure by farmers along with the livestock manure that is rich in nitrogen, phosphorus, and potassium and other essential nutrients that enhance the quality of the soil.
Manure is rich in organic matter and humus which helps in improving the fertility of the soil. These organic matters are good for the soil and do not cause any damage to the natural resources. It is a renewable resource that replenishes the soil with nutrients
Manure can be obtained from a number of sources. The different sources of manure are given below:
Biodegradable materials like cattle dung, urine, and slurry from biogas plants.
Waste products from human habitation such as human urine, night soil, sludge, sewage, domestic waste.
Droppings of livestock such as goat and sheep
Waste that is obtained from slaughterhouses such as bones, meat, horn and hoof meal, fish waste etc.
By-products of agricultural industries
Waste material from crops
Weeds, water hyacinth etc
Types of Manure
Manure can be divided into Farmyard manure, Green manure and Compost manure. The different types of manure used by the farmers are given below:
Green Manure
This increases the percentage of organic matter in the soil which helps in the suppression of weeds and prevents soil erosion.
Farmyard Manure
It improves the soil structure and is used as a natural fertilizer in farming. Farmyard Manure increases the capacity of soil that will hold more water and nutrients.
Compost Manure
It improves the soil structure and water retention capacity of the soil. Thereby improving the health of the plants.
Advantages of Manure
These are a good source of macro and micronutrients.
Helps in Improving soil fertility.
It is a very cost-effective tool for increasing yield
Prevents soil erosion and leaching.
Improves the physical properties of soil and aerates the soil.
Improves the water and nutrient retention capacity of the soil.
It is very easy to transport.
FAQs on Manure in Biology and Agriculture
1. What is manure in biology?
Manure is an organic fertilizer made from animal waste and decomposed plant materials that enriches soil with nutrients. In biology and agriculture, manure improves soil fertility by adding essential elements and organic matter.
- Contains nitrogen (N), phosphorus (P), and potassium (K)
- Increases soil humus content
- Enhances microbial activity in soil ecosystems
2. What are the main types of manure?
The main types of manure are farmyard manure, compost, and green manure. These types differ in source and method of preparation.
- Farmyard manure (FYM): Decomposed mixture of cattle dung, urine, and bedding material
- Compost: Decomposed plant and animal waste
- Green manure: Fresh green plants ploughed into soil to decompose
3. How does manure improve soil fertility?
Manure improves soil fertility by adding nutrients and increasing organic matter content in the soil. It enhances both physical and biological properties of soil.
- Adds essential nutrients like NPK
- Improves soil structure and aeration
- Increases water-holding capacity
- Promotes growth of beneficial soil microorganisms
4. What is the difference between manure and fertilizer?
The main difference between manure and fertilizer is that manure is organic and natural, while fertilizer can be organic or inorganic and is often chemically manufactured. Manure improves overall soil health, whereas fertilizers mainly supply specific nutrients.
- Manure: Natural, bulky, improves soil structure
- Fertilizer: Concentrated nutrients, fast-acting
- Manure supports long-term soil fertility
5. What is green manure and why is it used?
Green manure refers to young green plants that are grown and then ploughed into the soil to improve fertility. It is mainly used to enrich soil with organic matter and nitrogen.
- Common plants: sunhemp, sesbania
- Increases nitrogen content through decomposition
- Improves soil texture and microbial activity
6. What nutrients are present in manure?
Manure contains essential plant nutrients such as nitrogen, phosphorus, and potassium, along with micronutrients. These nutrients support plant growth and development.
- Primary nutrients: N, P, K
- Secondary nutrients: calcium, magnesium, sulfur
- Trace elements: iron, zinc, copper
7. How is compost manure prepared?
Compost manure is prepared by allowing organic waste to decompose under controlled conditions. Microorganisms break down the material into nutrient-rich humus.
- Collect plant and animal waste
- Place in compost pit or heap
- Maintain moisture and aeration
- Allow microbial decomposition for several weeks
8. Why is manure considered eco-friendly?
Manure is considered eco-friendly because it is biodegradable and improves soil health without causing chemical pollution. It supports sustainable agriculture and reduces dependence on synthetic fertilizers.
- Recycles organic waste
- Enhances soil biodiversity
- Reduces risk of soil degradation
9. What are the advantages of using manure in agriculture?
The advantages of using manure include improved soil structure, increased fertility, and better water retention. It supports long-term agricultural productivity.
- Improves soil texture
- Enhances root growth
- Boosts beneficial microbial activity
- Provides slow and steady nutrient release
10. Can manure affect soil microorganisms?
Yes, manure positively affects soil microorganisms by providing organic matter that serves as food for them. This increases microbial population and activity in the soil.
- Stimulates growth of bacteria and fungi
- Enhances nutrient cycling
- Improves overall soil ecosystem health
