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

John's dad makes wooden furniture, but there are many furniture makers in his state. John's dad decides to ship his furniture to the next state to
be sold, as there are fewer people selling furniture in that state. Which concept MOST impacts this movement of goods?
ОА
transportation
OB.
distance
oc intervening opportunity
OD. supply and demand

Answers

Answer:

  D. supply and demand

Explanation:

John's dad is choosing to market his goods where supply is lower, assuming he can capture a larger share of the demand that he can locally. In the scenario described, distance and transportation costs appear not to be significant.

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

Answers

This is the answer. Please mark me brainlist

Volcanic eruptions are caused by all of the following EXCEPT _____.
when two plates collide
when two plates separate
hotspots in the upper mantle
geysers and hot springs

Answers

Answer:

geysers and hot springs

Explanation:

On the map below, the star is marking which of the following bodies of water?

Mediterranean Sea

Persian Gulf

Caspian Sea

Black Sea

Answers

Answer:

Black Sea

Explanation:

Why has the North American Free Trade Agreement (NAFTA) between
Canada, the United States, and Mexico resulted in some Mexican farmers
going out of business?
O A. Without tariff protection, they could not compete against lower-
priced U.S. farm products.
B. Without an open border, they could not bring their goods into the
United States to sell.
O C. Without regulation, they could not maintain a clean enough
environment to farm safely.
O D. Without a minimum wage, they could not find workers willing to
work on their farms.

Answers

Answer:

D:Without a minimum wage, they could not find workers willing to

work on their farms.

Explanation:

NAFTA's purpose was to encourage economic activity among North America's three major economic powers: Canada, the U. S., and Mexico. Proponents of the agreement believed that it would benefit the three nations involved by promoting freer trade and lower tariffs among Canada, Mexico, and the United States.

HELP HELP ASAPPP!! PLEASE HELP NOW PLEASE RIGHT NOW

Answers

Answer:

claiming a God given right to rule----- divine right

claiming to be the only group doing right----ideology

maintaining absolute control over the lives of the people---fear

keeping citizens in line through fear and violence---- totalitarianism

How does afforestation help to balance the environment?​ help

Answers

we breath in oxygen and breath out carbon dioxide. since we get carbon dioxide from trees then replacement of trees mean we have more trees

Explanation:

deforestation is the indiscriminate felling of trees while afforestation is the replacement of felled down trees.

Which country is the star marking on this map of Africa?
A. Libya
B. Sudan
C. Somalia
D. Egypt

Answers

Option B (Sudan)

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The correct answer is Sudan

Am I right? I need help

Answers

The correct answer would be B
The correct answer is B. You got it right

The direction and frequency of hunter-gatherer migration depended on

A) the movement of game and the seasonal growth of plants.
B) the shifting of climate patterns.
C) the arrival of imperial armies and other invading forces.
D) each group's size and the ability to run over long distances.
E) mathematical processes.

Answers

Answer:
B. The movement of game and the seasonal growth of plants.
Explanation:
They varied depending on the season.

The mountains of the northern part of the Nation block the cold and wind that blows towards Nepal from the central asia​

Answers

Answer:

Is it suppose to be a true or false or what?

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.

Which of the following maps below is a satellite image of Egypt?
Map A
Map B
Map C
none of the above

Answers

Answer:

id say map A

Explanation:

Map A which was below shows the satellite image of Egypt.

An object that has been placed into orbit in space on purpose is known as a satellite or artificial satellite. There are several applications for satellites, including communication.

A satellite is a body that orbits a planet, star, or moon. For instance, the fact that Earth orbits the sun makes it a satellite. The moon is a satellite as well because it revolves around Earth. The term "satellite" typically refers to a device that is launched into space and orbits the Earth or another celestial body.

In addition to being the foundation of cable and network TV, satellites also deliver television signals directly to homes. These satellites transmit signals to smaller stations that transmit the signals locally over cables or the airways from a central station that produces programming.

Hence, option A is correct.

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Explain how species within the natural environment work together.

Answers

Answer:

This happens by the process of natural selection. By natural selection, the nature of the species gradually changes to become adapted to the niche. If a species becomes very well adapted to its environment, and if the environment does not change, species can exist for a very long time before they become extinct.

The ones that will be discussed in this article are competition, predation, herbivory and symbiosis. These are not the only types of species interactions, just the most studied — and they are all parts of a larger network of interactions that make up the complex relationships occurring in nature.

Explanation:

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Question 7 of 40
Which of the following best describes a natural resource? As
A. Currency used to exchange for or purchase products
B. A cultural or religious ideology used by humans
C. Products created by humans for improved living conditions
D. A substance, energy source, or organism used by humans
SUBMIT

Answers

Answer:

D. A substance, energy source, or organism used by humans

Explanation:

Its not man made like the others

The answer to your question is d

As regiões do Brasil são divididas segundo as suas particularidades. Cada uma delas apresenta características específicas em relação ao território que abrange. Sabendo isso, elas diferem-se como? Marque a alternativa correta. *

A)Economicamente, socialmente e fisicamente
B)Economicamente, socialmente e por classe social
C)Economicamente, territorialmente e por tamanho
D)Economicamente, por estado e por idade

Answers

Answer:

A

Explanation:

Fog and mist can be classified as g______ or vapor form

Answers

Fog and mist can be classified as Gas

kepentingan peringkat hilir sungai kepada manusia​

Answers

Sguevygvywbvliy&i,uweul=bshivblwibbueuwibvliulbvweiulbvewbulivwebulivdwbuiluilbvkliubveibulevwiubkevbuikew

Cold water of the same source forms lather hardly with soap. Why?

Answers

Answer:

Elaborate on the question

Explanation:

hardness of water is due to calcium and magnesium ions. when soap is added to hard water, calcium and magnesium ions replaces sodium (or potassium) ions in the salt (soap) and gets precipitated hence lather formation is hindered.

Which method of showing Earth's surface is the most accurate?

A.
an equal-area projection

B.
a scale-model globe

C.
a Mercator projection

D.
a Robinson projection

Answers

Answer:

B

Explanation:

The most accurate way of showing the Earth's surface is by a scale-model globe

The Method of showing Earth's surface is the most accurate scale-model globe. Thus the correct answer is B.

What is Earth?

The only celestial object supporting life is Earth, located third from the Sun. Land, air, water, and energy all exist on Earth. Mountains, valleys, and plains are all present in the region.

An Earth or other astronomical body sphere-shaped model is called a globe. Unlike maps, which affect the surface they represent besides reducing it down, globes provide similar functions. Maps cannot compare to the global globe.

A globe is the most accurate way to depict Earth's curved surface. A globe is the greatest way to represent Earth. A scale and a global latitude and longitude are typically present on globes.

Therefore, option B a scale-model globe is appropriate.

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I'm a few words,explain what physical geography examines.

Answers

Answer im not sure but i think its would be a rectangle

Explanation:

What type of galaxy is described as having an elongated center and spiraling arms?
Barred spiral
Spiral
Irregular
Elliptical

Answers

Answer:

barred spiral

Explanation:

The galaxy which is described as having an elongated center and spiraling arms is a Barred spiral. Thus the correct answer is A.

What is Galaxy?

A galaxy is a large collection of planets, celestial bodies, gas, and particles. Gravity keeps a galaxy together. A big black hole also resides in the center of our galaxy, the Milky Way.

A spiral galaxy termed a barred spiral universe has a star-focused central bar structure. In almost two-thirds of spiral galaxies, streaks are present.

Stars no more revolve in circular orbits when a large barrel arises instead, the bar has bent the stars' orbits, which is causing them to move into more circular orbits that pass close to the center of the galaxy.

Therefore, option A Barred Spiral is the appropriate answer.

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Which of the following statements about political maps are true? Check all that apply. I A. They never show any physical features of land. B. They are the most common type of map. O C. They will show capital cities, major cities, and large lakes or rivers D. They may show how areas are broken into countries and states.​

Answers

Answer:

B, C, D

Explanation:

If you look up a political map you can see they they are the most common map, they are what we use to find cities and landmarks, and they are the kind of map that show you where all the states or countries borders are.

HELP WILL MARK BRAINLIEST!! ONLY TWO ANSWERS TO ANSWER FROM!!

What is likely true about the tilt and location of a place if the weather is cold and snowy?

A. The axis is tilted away from the sun, and the location is in the mid-latitudes

B. The axis is tilted away from the sun, and the location is in the low-latitudes.

Answers

Answer is B. ( The acid is tilted away from the sun, and the location is in the low-latitudes). The more the Earth is away from the star, the more cold it gets because it receives less ultraviolet light and less likely to have an impact on the planet to make a certain place to be hot.

Since it receives less ultraviolet light and is less likely to have an impact on the globe to cause a particular spot to be hot, the Earth becomes colder the further it is from the star.

Thus, Option A is correct.

What are mid-latitude and low-latitude?

The northern hemisphere's region between 30° and 60° latitude can be generically referred to as the mid-Latitude Region. About 36 nations from the main regions of East Asia, Central Asia, Central, and Eastern Europe, Western Europe, and some parts of North America are included in the Northern Hemisphere's Mid-Latitude.

Low latitudes are defined as areas that are between 30 degrees N/S and the Equator (0 degrees N/S). Between 30 degrees N/S and 60 degrees N/S are the middle latitudes. Additionally, the high latitudes are found between the poles (90 degrees N/S) and 60 degrees N/S.

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What factors affect water quality

Answers

Answer:

Many factors affect water quality

Sedimentation

Runoff

Erosion

Dissolved oxygen

pH

Temperature

Decayed organic materials

Pesticides

Toxic and hazardous substances

Oils, grease, and other chemicals

Detergents

Litter and rubbish

Answer: There are so many factors which may/will affect the quality of water

Explanation: such as

i) Acid : it may come from acid rain and etc.....

ii) toxic waste materials : especially from high operating factories

iii) Oil spillage: accidents during oil shipping etc....

iv) littering: dumping of trash and rubbish

v) toxic substances; may come from harmful chemicals which are used in fishing etc... pesticides

vi) bathing and washing in water bodies with animals affects water quality

vii) dumping of waste products into water bodies

viii) mining underground activities

ix) Erosion may also affect water quality

x) leakages: especially in sewage pipes

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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.

help me asap plz
^﹏^

Answers

Answer:

French Guiana - controlled by France

Suriname - Official language is Dutch

Ecuador - Mostly exports of bananas and oil; population is mostly mestizo

El Salvador -The highest population density in the region of South America

it was correctly placed lol

Explanation:

When continental polar air moves over a relatively warm lake, such as one of the Great Lakes, the air mass acquires both heat and moisture, resulting in ________ on the land leeward of the lake. Group of answer choices

Answers

Lake effect snow is the result.

Lake effect snow is a heavy and localized snowfall that is traceable to the great lakes. During the winter season, this type of  snow results when cold air moves over lake waters that are warm.

Given that the temperature of the lakes are more than that of the cold air that came in contact with the lake, it would cause moisture to go up.

This moisture and high temperature is what combines together for there to be snow.

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Please help me out with this

Answers

Answer:

darling its -3..

Explanation:

Answer:

-3

Explanation:

Its self explanatory

how do the activities of man affect the environment​

Answers

Answer:

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water.

if my answer helps you than mark me as brainliest

Answer:

Explanation:Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These negative impacts can affect human behavior and can prompt mass migrations or battles over clean water.

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