How do soil help in prevent severe floods and droughts?
Healthy soils with good porosity, absorb and store water deep into the soil, reducing flooding. The same pores allow the roots to penetrate deep into the soil to mine the nutrients and stored water required for growth – so that plants can grow and transpire in the “drought”.
How does soil prevent flooding?
Through erosion, soil is washed away and contributes to the silting of rivers, so reducing their flow capacity and further exacerbating the problem of flooding. In combination, this reduces run-off, at least until the soil becomes saturated.
How do floods and droughts affect the soil?
Floods are important to the natural environment because they add moisture to dry land, top up aquifers, and provide nutrients to the soil. Droughts often result in forest fires that clear out old dead trees and smaller plants, making room for new life.
What happens to soil during a drought?
Changes in soil temperature during drought conditions can affect soil organic matter (SOM) decomposition and increase the release of carbon dioxide. Also, during this process additional mineral N, mostly in the form of nitrate, will be released in the soil system.
Does drought affect soil pH?
Potassium is more affected than P because of its different chemistry and reactions in soil. Very dry soil conditions may result in lower soil pH values (more acidic in neutral to acidic soils). Differences ranging from 0.1 to 0.3 pH units lower are common with very dry conditions.
Why is crop yield reduced when soil is too wet or too dry?
Maintaining adequate oxygen in the crop root zone is critical for healthy crop growth and yield. Plant roots need oxygen. When soil is too wet or waterlogged, the oxygen con- tent is reduced and minimal oxygen is absorbed by the plant roots.
Is the soil wet or dry?
You can check the soil moisture by squeezing a handful of soil. If the soil holds together and doesn’t break apart if you drop it, it is too wet. If the soil doesn’t hold together at all, it is too dry. If the soil holds together but breaks apart into many smaller clumps, it is just right.
What happens if there is too much water in the soil?
If soil becomes waterlogged and stays that way — as poorly draining clay soil tends to do — the water can cut off the air supply to the roots and to the microorganisms that live in healthy soil. It can lead to root rot or other diseases.
What is the effect on farming if there is no rain?
However, a combination of not enough watering and no rainfall could also lead to dying crops. Underwatering “starves” the plant of water, which can lead to crop death or low yield. Conversely, overwatering can lead to browned tips of crop leaves and also possible root rot and other issues.
Is too much rain bad for crops?
Too much rain and overcast skies can slow the plant’s growth and affect the blossom production. Heavy rain leaches nutrients in the soil and can trigger nutrient deficiency, affecting the plant growth.
What does too little rain lead to?
When little or no rain falls, soils can dry out and plants can die. When rainfall is less than normal for several weeks, months, or years, the flow of streams and rivers declines, water levels in lakes and reservoirs fall, and the depth to water in wells increases.
Why can’t the farmers depend only on rainfall to grow their crops?
On average, 65% of rainwater is lost and not available to crops in rain-fed agriculture. Farmers need to capture and store water so they can use it during the dry period. Conservation or minimum tillage is a farming practice in which crops are grown with minimum soil disturbance.
What may be a developmental goal of a rich farmer?
Answer: Explanation: developmental goal of a rich farmer will be to educate his child with proper facilities and sen abroad for further studies.
Do farmers rely on rain?
Agriculture is highly dependent on good weather, including high and low temperatures, rainfall, wind intensity, and many other variables.
Who depend only on rain for growing crops?
| Category of Person | Developmental Goals / Aspirations |
|---|---|
| Prosperous farmers from Punjab | Assured a high family income through higher support prices Punjab for their crops and through hardworking and cheap labourers; they should be able to settle their children abroad. |
| Farmers who depend only on rain for growing crops |
What may be a developmental goal for unemployed youth?
The Development goal for an urban unemployed youth would be to find a good job and earn a decent wage with that work. He will aspire to maintain a good standard of living .
What is development for a boy from a rich urban family?
DIFFERENT PEOPLE AND DIFFERENT GOALS
| Category of Person | Developmental Goals/ Aspirations |
|---|---|
| A boy from a rich urban family | |
| A girl from a rich urban family | She gets as much freedom as her brother and is able to decide what she wants to do in life. She is able to pursue her studies abroad |
| An adivasi from Narmada valley |
What are your goals of development is it similar to other members of your family?
Explanation: Development goals vary from person to person due to the difference in their thinking or their priorities. They are not similar even in the family members.
What are the three characteristics of development?
These are:
- It is a continuous process.
- It follows a particular pattern like infancy, childhood, adolescence, maturity.
- Most traits are correlated in development.
- It is the result of interaction of individual and environment.
- It is predictable.
- It is both quantitative and qualitative.
What are the two types of development goals?
Answer : The two common developmental goals of the people are better income and quality education.