define fertility management​

Answers

Answer 1

Answer:

Soil fertility refers to the ability of soil to sustain agricultural plant growth, i.e. to provide plant habitat and result in sustained and consistent yields of high quality.

Answer 2
Soil fertility is the ability of soil to sustain plant growth and optimize crop yield. This can be enhanced through organic and inorganic fertilizers to the soil. Nuclear techniques provide data that enhances soil fertility and crop production while minimizing the environmental impact.
Advancing food security and environmental sustainability in farming systems requires an integrated soil fertility management approach that maximizes crop production while minimizing the mining of soil nutrient reserves and the degradation of the physical and chemical properties of soil that can lead to land degradation, including soil erosion. Such soil fertility management practices include the use of fertilizers, organic inputs, crop rotation with legumes and the use of improved germplasm, combined with the knowledge on how to adapt these practices to local conditions.

The Joint FAO/IAEA Division assists Member States in developing and adopting nuclear-based technologies for improving soil fertility practices, thereby supporting the intensification of crop production and the preservation of natural resources.
Different approaches to efficiently manage soil fertility
An integrated soil fertility management aims at maximizing the efficiency of the agronomic use of nutrients and improving crop productivity. This can be achieved through the use of grain legumes, which enhance soil fertility through biological nitrogen fixation, and the application of chemical fertilizers.

Whether grown as pulses for grain, as green manure, as pastures or as the tree components of agro-forestry systems, a key value of leguminous crops lies in their ability to fix atmospheric nitrogen, which helps reduce the use of commercial nitrogen fertilizer and enhances soil fertility. Nitrogen-fixing legumes are the basis for sustainable farming systems that incorporate integrated nutrient management. Use of nitrogen-15 lends understanding of the dynamics and interactions between various pools in agricultural systems, including nitrogen fixation by legumes and utilization of soil and fertilizer nitrogen by crops, both in sole and mixed cropping systems.

Soil fertility can be further improved by incorporating cover crops that add organic matter to the soil, which leads to improved soil structure and promotes a healthy, fertile soil; by using green manure or growing legumes to fix nitrogen from the air through the process of biological nitrogen fixation; by micro-dose fertilizer applications, to replenish losses through plant uptake and other processes; and by minimizing losses through leaching below the crop rooting zone by improved water and nutrient application.
The contribution of nuclear and isotopic techniques
The isotopes of nitrogen-15 and phosphorous-32 are used to trace the movements of labelled nitrogen and phosphorous fertilizers in soils, crops and water, providing quantitative data on the efficiency of use, movement, residual effects and transformation of these fertilizers. Such information is valuable in the design of improved fertilizer application strategies. The nitrogen-15 isotopic technique is also used to quantify the amount of nitrogen fixed from the atmosphere through biological nitrogen fixation by leguminous crops.

The carbon-13 isotope signature helps quantify crop residue incorporation for soil stabilization and fertility enhancement. This technique can also assess the effects of conservation measures, such as crop residue incorporation on soil moisture and soil quality. This information allows the identification of the origin and relative contribution of different types of crops to soil organic matter.

Related Questions

two pieces of evidence which indicate that Paarl receives seasonal rainfall​

Answers

Explanation:

Climate change is a highly contentious topic in the modern world. There is much evidence to indicate that climatic shifts and extreme weather anomalies are taking place globally, in some places more than others. This paper presents the findings on research to determine whether shifts in seasonal rainfall patterns are indeed already visible in historical rainfall data in the Western Cape of South Africa. The paper aims to provide some baseline information which can stimulate further research in this field. Different analytical methods were formulated to investigate the relationships between daily rainfall indices over a set timescale. Data was collected from the South African Weather Service (SAWS) in order to accumulate 20 rainfall stations, each with at least 100 years of historical daily rainfall data. Statistical analysis, linear trend line distributions, time lag comparisons, cumulative distributions, moving average plots and autocorrelation relationships were applied to the data. The results of the analysis indicated that (1) the rainfall season undergoes fluctuations of wetter and drier years (approximately 20-year cycles), (2) the South Coast region exhibits a shift towards a longer rainfall season, and in contrast the Mediterranean region is shifting to a shorter rainfall season when linear trend lines were analysed, and (3) the moving average plots showed only isolated seasonal shifts at the boundary months.

This map shows the location of the Sumatra Earthquake of 2004 and the aftershocks.
What is most likely inferred about the aftershocks, based on this map?

A. They were mainly large and some could be considered earthquakes on their own.
B. They were felt for many weeks after the original earthquake.
C. They were concentrated in one area of the Indian Ocean.
D. They were mainly small and unable to be felt by most people.

Answers

Answer:

Earthquakes occur in the crust or upper mantle, which ranges from the earth's surface to about 800 kilometers deep (about 500 miles).

The strength of shaking from an earthquake diminishes with increasing distance from the earthquake's source, so the strength of shaking at the surface from an earthquake that occurs at 500km deep is considerably less than if the same earthquake had occurred at 20 km depth.

Also, the depths of earthquakes gives us important information about the Earth's structure and the tectonic setting where the earthquakes are occurring. The most prominent example of this is in subduction zones, where plates are colliding and one plate is being subducted beneath another. By carefully plotting the location and depth of earthquakes associated with a subduction zone, we can see details of the zone's structure, such as how steeply it is dipping, and if the down-going plate is planar or is bending. These details are important because they give us insight into the mechanics and characteristics of the deformation in the subduction zone.

Within continents, and along continental plate boundary transform faults such as the San Andreas, faults are only active in the shallow crust - perhaps to depths of approximately 20 km.

Accurately determining the depth of an earthquake is typically more challenging than determining its location, unless there happens to be a seismic station close and above the epicenter. So generally, errors on depth determinations are somewhat greater than on location determinations.

Answer:

B. They were felt for many weeks after the original earthquake

Explanation:

I took the test and this is the correct answer :)

A(n) ________ is a cone of debris that forms where an ephemeral stream emerges from the confines of the canyon. Its runoff spreads over the gentler slopes at the base of the mountains and quickly loses velocity, dumping most of its sediment load within a short distance.

Answers

Answer:

alluvial fan

Explanation:

Alluvial fans are a mix of sediments made up of mostly sand and gravel that are created when canyons, hills or mountains interact with flowing water.  They help with the sustenance of life and irrigation farming as the main source of water.

select the terms that describe a cultural influence on a region.

a. the city is bordered by water on three sides

b. forests are cleared to provide space to grow crops

c. female children may only attend school until they are ten years old

d. the tallest mountain on the continent is located here

e. new year’s eve is celebrated by shooting fireworks out into the sea

f. membership in club pretentious is restricted to individuals whose assets are greater than $1 million

Answers

c. female children may only attend school until they are ten years old

e.new year’s eve is celebrated by shooting fireworks out into the sea

Membership in Club Pretentious is restricted to individuals whose assets are greater than $1 million.

Female children may only attend school until they are ten years old.

New Year's Eve is celebrated by shooting fireworks out into the sea.

Forests are cleared to provide space to grow crops.

The population of France is 63.7 million people. If the birth rate is greater
than the death rate, how will this affect the population

Answers

Answer:

The population will increase

Explanation:

In a given year if a country has more births than deaths, that means that there will be an increase in the total amount of people a country has. If this trend continues the population will grow in the future. If the birth rate is substantially higher than the death rate than the population will increase more rapidly, and more substantially. If the birth rate is only slightly greater than the death rate the population will still increase, albeit more slowly, and less substantially.

Answer:

Overpopulation can be an issue if it continues.

Lack of resources (food, houses, etc) can be a subject of concern because of the larger number of citizens.

Larger population and a Natural increases in population size will be noticed.  

Government might give out free contraception to its citizens to stop the increase.

Explanation:

Overpopulation will be possible because there are more babies being born that people dying. France's population can increase exponentially if this situation continues and doesn't reach a stop.

Natural increase in a population occurs when birth rate is greater than death rate. This can also lead to a Natural decrease, when death rate is greater than birth rate.

The increase can cause the government to hand out free contraception to people.

The lower death rate could have been the result of good health care in the country, which means the population is taken care of. So it isn't necessarily a negative thing.

These are the things I could come up for the moment. I was just bored and I missed schoolwork and I started answering random questions lol.

Hope this helped

How many points appear in this figure?

Answers

Answer:8 points

Explanation:and bc i did it

Answer:

8 i don't know

Explanation:

During the Soviet Era, the government had a great effect on agriculture. Do you believe that the system of agriculture was subsistence farming or commercial farming, or a combination of the two? Explain.

Answers

Answer:

A combination.

Explanation:

The government mandated that most crops grown under Soviet rule would be given to the gov. to redistribute to people in need; however this caused great hunger and people started to farm on the side for substinence. Now hardcore socialists believe commercial farming is not applicable to government-takeover of crops, but I call it commercial since there was "compensation" to the farmers (not really lol).

During the Soviet Era, the government had a great effect on agriculture. The  believe that the system of agriculture was subsistence farming or commercial farming, or a combination of the two are the limited cultivation of private plots.

What is government?

The term “government” refers to a legal authority or system that is controlled and directed by an office, public sector, country, or state. The government imposed the law. The most common functions of the government are leadership, controlling, maintaining order, commanding, providing public services, and national security.

Agriculture in the Soviet Union was primarily collectivized, with some individual parcels being farmed. The government stipulated that the majority of food harvested under Soviet authority be provided to the government for redistribution to persons in need. Socialists think that government-takeover of crops does not apply to commercial farming.

As a result, the Soviet Era, the government had a great effect on agriculture.

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1- how does geography affect urbanization 2- how does geography affect cultural exchange

Answers

Answer:

Geography plays a role in movement of population which leads to cultural exchanges.

Explanation:

The concept of urbanization deals with the population, industries, and dwelling units. Geography does affect the process of urbanization, as the development of transport, trade, and communication networks in the world are affected by this aspect.  The rise of demands, growth of population, and rise in the living stands of people. Apart from that availability of resources like the land, labor, and capital also play an important role in the process of transformation of rural to urban.  The culture of a place is a product of man and land interaction. The exchange takes place when people move from their place of origin to the place of destination in search of opportunities. The impact of climate, the landscape has affected the behavior patterns of the people of different regions.

In a paragraph of not more than 8 lines describe the reasons for the difference in the population density of South Africa and England.​

Answers

Hey there! I'm happy to help!

Both South Africa and England have a similar populations. However, these countries have different population densities. Population density is how crowded the country is with people. South Africa is a much larger country in terms of its area while England has a smaller land area. If they have similar populations, but different amounts of space, one is going to have a higher population density. Since England has less space, it has a higher population density as there are more people in a smaller space. There is more land area in South Africa, so this naturally makes it less crowded.

Have a wonderful day and keep on learning! :D

Biggest lake In the world?

Answers

Answer:

Caspian Sea

Explanation:

The Caspian Sea in Asia is the largest lake in the world, with an area of 143,000 sq miles.

Hope this helped!

Caspian Sea

Biggest lake In the world is the Caspian Sea

why do we depend on water

Answers

So we can hydrate the body and regulate the blood flow. Oh, and so we all stay alive. Helps with our glycogen cells!

a lever
The mechanical advantage
advantage of
is 4. what does it mean 2​

Answers

Answer:

It means the measure  of the force amplification achieved by using a tool, mechanical device or machine system

In simple words , it means  the advantage gained by the use of a mechanism in transmitting force is 4

Explanation:

posters with the key features of the ideal student in mind​

Answers

This is the answer. Please mark me brainlist

Convert 6 feet to miles​

Answers

Answer:

0.00114 miles

Explanation:

divide length value by 5280

Which phrase is the best definition of the word technology, in the narrow
sense?
O A. Tools and their use
O B. Exchange of new ideas
O C. Fast communication
O D. Better ways to do things

Answers

Answer:

I think the answer is better ways to do things

Do you think the climate of our Earth will remain same after next 30 years? Justify it.​

Answers

Answer:

No it will not stay the same for the next 30 years

Explanation:

We are polluting the planet vey fast and so fast that the planet cannot recover. Just thing of the virus spreading and now spreading so fat that we have no time to cure it .

Answer:

The Earth's climate changes from year to year, summers are warmer, winters are harsher and sometimes snow-free. In desert areas, temperatures are rising, and water resources are insufficient. Human activities greatly destroy the geographical environment: oil accidents, pollution of oceans and seas, large amounts of waste.  

Scientific studies show that the Earth's climate is changing and there is an increase in temperature and even the melting of mountain and cap glaciers.  

In the next 30 years the planet's climate will change depending on the responsibility of humans to protect the planet and maintain a healthy and clean environment.

Why do Canadians typically know more about U.S. culture than Americans know about Canadian culture?

Answers

The influence of U.S entertainment and news sources, the primary reason is because Canada’s media covers the US intently, every corner of it and the US media covers all about Canada. They don’t cover it and the news media doesn’t talk about Canada on their newscasts. We know everything that’s happening in the US whereas the US population doesn’t have access to news about Canada. No US cable or satellite feeds deals with Canada.

If it is winter in Shanghai, China, what season is it in Tehran, Iran?

Answers

Answer:

it is also winter, but closer to fall

It’s also winter❄️but a bit closer to fall

3.1 Is the Afdaksrivier a perennial or non- perennial?​

Answers

Answer:

non-perennial

Explanation:

Perennial rivers are also known as permanent rivers. They flow throughout the year. It is indicated by the river channel which touches water table throughout the year.

Periodic or non-perennial rivers are those rivers which do not have a constant flow throughout the year. It mainly consists of those rivers which flow only during the rainy season.

describe cross section of land structure if nepal in detail​

Answers

Nepal measures about 880 kilometers (547 mi) along its Himalayan axis by 150 to 250 kilometers (93 to 155 mi) across. It has an area of 147,516 km2 (56,956 sq mi).

How can the discovery of new artifacts change interpretations of history over time

Answers

Answer:

I believe that the discovery of new artifacts can bring many improvements to historical interpretations along with additional information for understanding historical facts. Thus, new causes can be found and analyzed that could lead to a certain phenomenon.

What rock-forming process occurs when hot magma forces its way into rock?

Answers

Contact Metamorphism

How does social media spread fake news​

Answers

Answer: It's complicated..

Explanation: Basically, social media can be full of lies and fake things that they want you to believe in.

For example, when news reporters report stories or incidents that have happened they probably include some things that didn't happen.

Now I'm not saying that this happens with ALL news reporters or writers.

Point is people can spread fake news by telling lies, adding in things that didn't really happen in that situation, rumors about celebrities, and so on.

Hope that this helps! :)

Many people believe that enormous power also comes with great responsibility. Some journalists abused their position of authority, while many entered the profession in order to report the truth and disseminate credible information. Most people who posted on social media never bothered to double-check the information.

Why social media is bad for society?

Although social media has many advantages, it can also be a place for torcher and exclusion, the normalizing of risk-taking behavior, false expectations about one's appearance and sources of popularity, and harm to one's mental health.

Young people are exposed to media content that makes it difficult for them to discriminate between what is real and what is not, which encourages confusion and mindless imitation. The rise in teenage aggression, sexual activity, and dangerous conduct is significantly influenced by the media. A staggering 94.3 percent of respondents blamed social media for disseminating false information, and 79.3 percent claimed that social media mostly hurts the journalistic sector. A Medill Centennial panel discussion in February covered the survey.

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What well-known parallel is 1.6° South of 22.9068° S, 43.1729° W?

Answers

Answer:

Tropic of Capricorn

Explanation:

The Tropic of Capricorn which is also known as the Southern tropic is the furthest direction south of the Equator where the Sun can be located vertically overhead as it the location of the subsolar point at the southern solstice. In the middle of June, the Tropic of Capricorn reaches a position of an angle of 90° below the horizon at midnight

The latitude of the Tropic of Capricorn is 23°26'11.8'' south of the Equator, while the location of the Tropic of Capricorn is shifting northward at a rate of 15 meters annually.

What is the sum of the factors?
Two factors of -48 have a difference of 19. The factor
with a greater absolute value is positive.
6 0 €
0-19
0-13
ОООО
16
Mark this and return
Save and Exit
Next
Submit

Answers

9514 1404 393

Answer:

  13

Explanation:

-48 = -1·48 = -2·24 = -3·16 = -4·12 = -6·8

The differences between the second factor and the first are ...

  49, 26, 19, 16, 14

The factor pair with a difference of 19 is (-3, 16). The sum of these two factors is ...

  16 +(-3) = 13

Can someone help me i guess .

Answers

Answer:

Whereas weather refers to short-term changes in the atmosphere, climate describes what the weather is like over a long period of time in a specific area. Different regions can have different climates. To describe the climate of a place, we might say what the temperatures are like during different seasons, how windy it usually is, or how much rain or snow typically falls.

Explanation:

Which of the following galaxies is shaped like a sphere or an egg?
A. An elliptical galaxy
B. A spiral galaxy
O C. The Milky Way galaxy
D. An irregular galaxy

Answers

Answer:

Which of the following galaxies is shaped like a sphere or an egg?

A. An elliptical galaxy

Answer:

elliptical galaxy

Explanation:

‘People living in the high altitude prefer to raise cattle than cultivate crops’
Give reason to support your answer.

Answers

Answer:

I assume it is because it is colder.

Explanation: Tomatoes aren't gonna grow well in freezing climates. Neither is cucumber. Cattle's bodies produce heat. Plants don't.

Which of the following is an example of how the ocean influences climate?
A. During night time, oceans carry heat away from locations in coastal Florida.
B. The Gulf Stream current carries warm ocean water toward Europe.
C. The Gulf Stream carries heat away from regions in southern Florida.
D. During day time, oceans carry heat towards locations in coastal Florida.

Answers

B. The Gulf Stream current carries warm ocean water toward Europe.
It’s B got it right on my homework

What are the solutions to overcome problems caused by fold mountains?​

Answers

Answer:

They form when two plates with landmasses on them move towards each other.

The plates push layers of accumulated sediment in the sea into folds between them.

This becomes a fold mountain range.

Most fold mountains continue to grow as the plates constantly move.

Examples: the Himalayas (Asia), Rockies (USA), Andes (South America), Alps (Europe)

Other Questions
A firm has a long-term debt-equity ratio of .4. Shareholders equity is $1 million. Current assets are $200,000, and the current ratio is 2. The only current liabilities are notes payable. What is the total debt ratio? Any help would be nice Read the prompt. Then, choose the option with the correct demonstrative adjective.Juana doesnt like to play with the stufffed animal in her hands, nor the one far in the distance. She prefers the one on the floor in front of her. Joan was playing with that red teddy bear. Joan was playing with that red teddy bear. Joan was playing with this red teddy bear. Joan was playing with this red teddy bear. Fill in the blank with the correct form of tre. Tu ____allemand. tes est es suis It has been found that 26% of men 20 years and older suffer from hypertension (high blood pressure) and 31.5% of women are hypertensive. A random sample 150 of each gender was selected from recent hospital records, and the following results were obtained. Construct 95% confidence interval for the difference of the two proportion. Round your answer to nearest ten-thousandth. Interpret the result. PLEASE HELP ! (4/4) - 50 POINTS - Please help! Lorraine and Jake can produce any combination of peaches and nectarines described by the production possibilities curve above using the same amount of resources. Who has the absolute advantage in the production of each product? Explain. Who has the comparative advantage in the production of each product? Explain. Who will specialize in the production of each product? Explain using the concept of opportunity cost. 4. Join the pairs of sentences with the connectives given in the bracket:a. I like dancing. My father doesn't like dancing. (but) Using a conventional two-slit apparatus with light of wavelength 605 nm, 34 bright fringes per centimeter are observed on a screen 3.1 m away. What is the slit separation Which phrase best completes the diagram of the juvenile criminal justiceprocess? An employer plans to pay bonus to each of his employees. Those earning Rs. 2000 or above are to be paid 10 percent of their salary and those earning less than 2000 are to be paid Rs. 200. The input record contains employee number, name and salary of an employee. The output should be employee name and their bonus. Write pseudo code algorithm to process the requirement. What is the quotation of 6 and -1/2?1. -122. -1/123. 1/124. 12 what are the order of operations for integers ? Gaseous methane (CH4) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide (CO) and gaseous water (H2O) . Suppose 0.963 g of methane is mixed with 7.5 g of oxygen. Calculate the minimum mass of methane that could be left over by the chemical reaction. Be sure your answer has the correct number of significant digits. Which is the best estimate of -14 1/9 (-2 9/10) Two boxes can hold the same amount of sand. Box 1 is 1/4 filled and box 2 is 2/3 filled. If the sand in box2 is poured into box 1, what is the fraction of box 1 still not filled a.1/12 b.3/7 c.4/7 d.11/12 Which of the following sentences show the Correct usage of the word affect. Her speech really had an affect on me and made me want to volonteer.the affects of the medicine made it impossible for me to concentrate. I know my behavior is going to affect the group, so im trying to be possitive Corinne was shaken after learning that a _[blank] occurred during the auto accident.Which word form correctly completes the sentence? Alice and Bob are unknown to each other. Alice wants to send an encrypted message to Bob. So it chooses a KDC which is known to both Alice and Bob (protocol in page 338). Alice and KDC have A5 (hexa) as a shared key. Bob and KDC have 4B (hexa) as a shared key. Alice sends a request to KDC to generate a session key so it can communicate with Bob. KDC generates 56(hexa) as a session key. Alice intends to send 13 (hexa) as a message to Bob. For simplicity assume that the encryption and decryption operations are simply XOR operation of the key with the message. Answer the following.1. What information does KDC send to Alice? Show as hex characters.2. What information does Alice send to Bob? Show as hexa characters.3. What message does Bob retrieve after decryption? Show as hexa characters. 21. Translate the following sentence into Spanish. When I was young, I used to visit my grandparents frequently and I used to play with my friends during the summer. _______________________________________________________ 22. Use the prompt in parentheses to answer the following question. Your answer should be a complete sentence that uses reflexive verbs in the preterite tense. What are three things that you did this morning before going to school? (get up early, dress well, and wash your face) _______________________________________________________________ 23. Use the prompt in parentheses to answer the following question. Your answer should be a complete sentence in the preterite tense. What are two things that you brought to school with you today? (a book, a pencil) _________________________________________________________________ 24. Use the prompt in parentheses to answer the following question. Your answer should be a complete sentence in the preterite tense. What did you do yesterday? (go to school, have an exam in Spanish class) __________________________________________________________________