What are the advantages and disadvantages of fertilizers?
| Advantages of fertilizers | Disadvantages of fertilizers |
|---|---|
| It is soluble and easily absorbed by plants | Overfertilization can damage the plants |
| It enhances the metabolism of plants | It is toxic and can harm humans |
- They get washed away by water easily and cause pollution.
- They harm the microbes present in soil.
- They reduce soil fertility.
- They are expensive.
- They provide only short term benefits.
- They change the nature of soil, making it either too acidic or too alkaline.
Advantages Of Fertilisers
Water-soluble and can easily dissolve in the soil. Hence, they are easily absorbed by the plants. They have a rapid effect on the crops. Increase the crop yield and provide enough food to feed the large population.
The naturally occurring microorganisms in soil are harmed by the chemicals in the fertilizers. It can destroy the soil fertility of an area. It can reduce the organic matter and humus content in the soil.
Their major advantage is adding bulk to the soil. Except for manure, the organics generally release their nutrients over a fairly long period. However, the potential drawback is that they may not release enough of their principal nutrient at a time to give a plant what it needs for best growth.
◾Fertilisers add minerals like potassium, phosphorus and nitrates to the soil... ◾They harm the microbes present in soil and they reduce soil fertility. ◾They are expensive. ◾They provide only short term benefits.
Advantages of fertilizers
They are quick in providing plant nutrients and restoring soil fertility. They are portable and easy to transport. Plants easily absorb fertilizers. Fertilizers improve and increase the productivity of many crops such as wheat, maize, and rice.
If we use too much, it can kill our plants. Chemical fertilizers can build up in the soil, causing long-term imbalances in soil pH and fertility.
The biggest disadvantage of using an organic fertilizer is that it may not contain primary nutrients like nitrogen, phosphorous or potassium, also known as NPK. Manure-based fertilizers contain these nutrients and are still considered organic. However, many others don't contain significant quantities of NPK.
Without fertilizers, nature struggles to replenish the nutrients in the soil. When crops are harvested, important nutrients are removed from the soil, because they follow the crop and end up at the dinner table. If the soil is not replenished with nutrients through fertilizing, crop yields will deteriorate over time.
How are fertilizers applied to the soil Class 8 answer?
Fertilizer is applied in bands near the roots where roots developing for easily reach it. It can be either to the side and below the seed rows. This is slightly below the seeds and between rows. A simple measurements for this is band fertilizer 2 inches to the side and 2 inches deeper than the seeds or plants.
Chemical fertilizers are like steroids for plants
Fertilizers provide nutrients that plants need to grow, but as a cost, plants can grow more quickly than what their roots can sustain. This can result in weak plants that are more vulnerable on their own to pests and diseases[sc:4].
fertilizer, natural or artificial substance containing the chemical elements that improve growth and productiveness of plants. Fertilizers enhance the natural fertility of the soil or replace chemical elements taken from the soil by previous crops.
1. They get washed away by water easily and cause pollution. 2. They harm the microbes present in soil.
Long-term chemical use can alter the PH balance of your soil and cause a toxic build-up of certain nutrients. Read more about the dangers of over-fertilization here. Requiring more frequent application. Chemical fertilizers are absorbed quickly by your plants and grass.
Organic fertilizers release nutrients into the soil slowly. Synthetic fertilizers tend to release nutrients too quickly, which leads to fertilizer burns. By slowly releasing nutrients into the soil, the plants could absorb all the nutrients they need to grow without stressing out or over-fertilizing the crops.
Commercial growers often use synthetic fertilizer because it speeds up the growth process of their crop. However, overuse of synthetic fertilizers over time can deplete soils of natural microorganisms and nutrients.
Organic fertilizers are less concentrated than synthetic fertilizers and are therefore much safer to use. Organic fertilizers are ecological, environmentally friendly and non-toxic in nature, making them the best fertilizers for plants and crops in greenhouse farming.
1)The excessive use of fertilisers changes the chemical nature of soil and makes the soil less fertile. 2)The excessive use of fertilisers causes water pollution in ponds,lakes and rivers.
Modern farming methods have overused the natural resource base. Increased use of fertilizers has led to the loss of soil fertility. The use of groundwater for tube well irrigation has led to water depletion.
What are the disadvantages of manure and fertilizers Class 8?
1)They are very bulky and voluminous due to which it is inconvenient to store and transport. 2)They are not nutrient specific.
To retain soil fertility it is necessary to replenish nutrients by returning to the soil at least the same amount. So we use fertilizers which contains the essential nutrients.
Excessive fertilizer usage can lower soil's natural regenerating ability. Their extreme use can alter the chemical composition of the soil, making it less fertile. Increased use of fertilizers can influence soil by making it too acidic or basic.
Excess fertilizer alters the soil by creating too high of a salt concentration, and this can hurt beneficial soil microorganisms. Over- fertilization can lead to sudden plant growth with an insufficient root system to supply adequate water and nutrients to the plant.
Many pesticides used to protect crops from harmful pests often kill beneficial insects. Runoff of chemicals used in pesticides and fertilizers can drain into streams and lakes, and eventually our water supplies. Excess nitrogen from fertilizer runoff can cause excessive algae growth in rivers and lakes.
The problem with organic matter is that while plant nutrients are needed for crop growth, they can also stimulate excessive growth of the wrong plants – mainly, algae. In freshwater systems, such as ponds and lakes, excessive phosphorus will lead to excessive growth of algae.
- Organic food is more expensive because farmers do not get as much out of their land as conventional farmers do.
- Production costs are higher because farmers need more workers.
- Marketing and distribution is not efficient because organic food is produced in smaller amounts.
Constant use of chemical fertilizer can alter the pH of soil, increase pests, acidification, and soil crust, which results in decreasing organic matter load, humus load, useful organisms, stunting plant growth, and even become responsible for the emission of greenhouse gases.
Fertigation can synchronize nutrient supply and crop nutrient requirement, which enhances water-use efficiency, nutrient-use efficiency, and yield, while also reducing nutrient losses via leaching, ammonia volatilization, denitrification and weed pressure.
During planting, fertilizer is applied below the soil surface close to the seed row. Often, the fertilizer is placed 1 to 2 inches below (or below and to the side) of the seed row. In cool, wet areas, a “starter application” of fertilizer is placed in a subsurface band to boost seedling growth.
How do chemical fertilizers affect the soil Class 9 in points?
Answer: Chemical fertilizers provide minerals which dissolve in water and are immediately available to plants. But these may not be retained in the soil for long. They may escape from the soil and pollute groundwater, rivers and lakes.
In fields, manures and fertilizers are utilized to provide essential plant nutrients to the soil, enhancing soil fertility and ensuring strong vegetative growth, which leads to high crop output. It aids in the enrichment of the soil with nutrients and organic matter, as well as increases soil fertility.
It will maintains the soil fertility, so the farmer can continue to grow nutritious crops and healthy crops. Farmers turn to fertilizersbecause these substances contain plant nutrients such as nitrogen, phosphorus, and potassium.
Advantage: Controllable food supply. You might have droughts or floods, but if you're growing the crops and breeding them to be hardier, you have a better chance of not starving. Disadvantage: In order to keep feeding people as the population grows you have to radically change the environment of the planet.
Fertilizers boost crop yields, but their excessive usage has hardened the soil, reduced fertility, strengthened insecticides, polluted air and water, and emitted greenhouse gases, creating health and environmental risks.
A fertiliser is a natural or artificial substance containing chemical elements (such as Nitrogen (N), Phosphorus (P) and Potassium (K)) that improve growth and productiveness of plants. Some synonyms include the terms "enrichment" or "plant nutrient".
Manure is the decomposed form of dead plants and animals, which is applied to the soil to increase production. It is a natural form of fertilizer and is cost-effective. The human and animal excreta is also used as manure. The livestock manure is rich in nitrogen, phosphorus, and potassium.
When nitrogen fertilizer is applied faster than plants can use it, soil bacteria convert it to nitrate. Water-soluble nitrate is flushed out of soils in runoff, where it pollutes groundwater, streams, estuaries, and coastal oceans. In farming communities, it's not uncommon for nitrate to render drinking wells unusable.
Advantages of fertilizers
They are quick in providing plant nutrients and restoring soil fertility. They are portable and easy to transport. Plants easily absorb fertilizers. Fertilizers improve and increase the productivity of many crops such as wheat, maize, and rice.
Organic fertilizers are less concentrated than synthetic fertilizers and are therefore much safer to use. Organic fertilizers are ecological, environmentally friendly and non-toxic in nature, making them the best fertilizers for plants and crops in greenhouse farming.
What are disadvantages of organic fertilizer?
The biggest disadvantage of using an organic fertilizer is that it may not contain primary nutrients like nitrogen, phosphorous or potassium, also known as NPK. Manure-based fertilizers contain these nutrients and are still considered organic. However, many others don't contain significant quantities of NPK.
Modern farming methods have overused the natural resource base. Increased use of fertilizers has led to the loss of soil fertility. The use of groundwater for tube well irrigation has led to water depletion.
If we use too much, it can kill our plants. Chemical fertilizers can build up in the soil, causing long-term imbalances in soil pH and fertility.