Potassium is an essential nutrient for plant growth. It is absorbed by plants as a potassium ion (K+). Most soil potassium exists in unavailable forms within minerals or clay layers, but a small amount is readily available to plants. Potassium is critical for photosynthesis, enzyme activation, water regulation and protein synthesis in plants. Deficiencies can cause chlorosis, stunted growth, disease susceptibility and poor crop quality. Proper potassium management through fertilization can improve crop yields and quality while reducing environmental impacts.
Potassium is an essential plant nutrient and is required in large amounts for proper growth and reproduction of plants. It affects the plant shape, size, color, taste and other measurements attributed to healthy produce.
Importance and use of micro-nutrient 'Boron' in vegetable cropsHarshvardhan Gaikwad
The use and significance of essential micro-nutrient 'Boron' in different vegetable crops is explained in this powerpoint presentation. The role, function, general boron deficiency and toxicity symptoms different vegetable crops, boron requirement and critical level are mentioned and illustrated here.
Potassium is an essential plant nutrient and is required in large amounts for proper growth and reproduction of plants. It affects the plant shape, size, color, taste and other measurements attributed to healthy produce.
Importance and use of micro-nutrient 'Boron' in vegetable cropsHarshvardhan Gaikwad
The use and significance of essential micro-nutrient 'Boron' in different vegetable crops is explained in this powerpoint presentation. The role, function, general boron deficiency and toxicity symptoms different vegetable crops, boron requirement and critical level are mentioned and illustrated here.
Classification of chemical fertilizers • organic fertilizer and inorganic fertilizer • Sources of Organic fertilizers • Inorganic fertilizers • Nitrogenous fertilizers • Phosphate fertilizers • Potassic fertilizers • Secondary major-nutrient fertilizers • Micronutrient Fertilizers • On the base of physiological effect • On the basis of physical forms • Granular fertilizers
Potassium in soil and plant: analytical and management issuesExternalEvents
The second lab managers’ meeting of the South-East Asia Laboratory NETwork (SEALNET) took place on 19 - 23 November 2018 in ICAR-IISS (Indian Institute of Soil Science), Bhopal, India.
T Satyanarayana, PhD Director, South Asia Program, International Plant Nutrition Institute (IPNI) (1st Day)
First lab managers’ meeting of the South-East Asia Laboratory NETwork (SEALNET 2.0) - Quality improvement in Asian soil laboratories: towards standardization and harmonization of soil analyses and their interpretation, Bogor, Indonesia, 20 - 24 November 2017.
Potassium- Forms,Equilibrium in soils and its agricultural significance ,mech...Vaishali Sharma
The slide is conserned with the potassium fertilisers apllied in the soils. When the fertiliser applied in higher amount then it is avail in different form for plant uptake and there exist a equilibrium in soils and it has many agricultural significance and the slide also deal with brief on the mechanism of potassium fixation in the soil.
Classification of chemical fertilizers • organic fertilizer and inorganic fertilizer • Sources of Organic fertilizers • Inorganic fertilizers • Nitrogenous fertilizers • Phosphate fertilizers • Potassic fertilizers • Secondary major-nutrient fertilizers • Micronutrient Fertilizers • On the base of physiological effect • On the basis of physical forms • Granular fertilizers
Potassium in soil and plant: analytical and management issuesExternalEvents
The second lab managers’ meeting of the South-East Asia Laboratory NETwork (SEALNET) took place on 19 - 23 November 2018 in ICAR-IISS (Indian Institute of Soil Science), Bhopal, India.
T Satyanarayana, PhD Director, South Asia Program, International Plant Nutrition Institute (IPNI) (1st Day)
First lab managers’ meeting of the South-East Asia Laboratory NETwork (SEALNET 2.0) - Quality improvement in Asian soil laboratories: towards standardization and harmonization of soil analyses and their interpretation, Bogor, Indonesia, 20 - 24 November 2017.
Potassium- Forms,Equilibrium in soils and its agricultural significance ,mech...Vaishali Sharma
The slide is conserned with the potassium fertilisers apllied in the soils. When the fertiliser applied in higher amount then it is avail in different form for plant uptake and there exist a equilibrium in soils and it has many agricultural significance and the slide also deal with brief on the mechanism of potassium fixation in the soil.
Multi-K™, Haifa’s potassium nitrate brand, is the basis of a whole line of plain and enriched potassium nitrate products, designed for optimal plant nutrition
Indonesia Natural Zeolite manufacturer producer, wholesale and exporter by D&W Corporation which is specialized producing Natural Zeolite for fertilizer, Zeolite for feed additive and Zeolite for Aquaculture. Include Green Granular (Granule) Zeolite, Green Powder Zeolite, Zeolite Chips, Volcanic Soll (Volcanic Powder).
Balanced fertilizer use refers to application of essential plant nutrients in optimum quantities and in right proportional through appropriate method and time of application suited for a specific crop and agronomic situation.
Aims of Balanced Fertilization:
a) Increasing crop yield,
b) Improving quality of the produce ,
c) Increasing farm income,
d) Correction of inherent soil nutrient deficiencies and toxicities
e) Maintaining or improving lasting soil fertility,.
f) Reduces environmental hazards
Gardening Organically - Catherine Wissner, University of Wyoming
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For more information, Please see websites below:
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Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
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Double Food Production from your School Garden with Organic Tech
http://scribd.com/doc/239851079
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Free School Gardening Art Posters
http://scribd.com/doc/239851159`
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Companion Planting Increases Food Production from School Gardens
http://scribd.com/doc/239851159
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Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
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City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
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Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
The Problematic soils are major constrain for agriculture. Understanding their properties in important for providing solutions. Sodic soils are one of them mainly found in coastal areas and Arid climate conditions. Further knowledge about management of sodic soils is necessary.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
Predicting property prices with machine learning algorithms.pdf
potassium
1.
2. ROLE OF POTASSIUM IN
PLANT GROWTH
Ayesha Iftikhar
Prof Dr. Abdur Rahim
DEPARTMENT OF SOIL SCIENCE
3. History of Potassium
Potassium symbol K comes from “Kalium” the
name of the element in Germany and
Scandinavia.
Potassium metal was first isolated in 1807 by
Sir Humphry Davy who derived it from caustic
potash by the use of electrolysis of the molten
salt with the newly discovered voltaic pile.
Potassium was the first metal that was isolated
by electrolysis.
4. Introduction
▪ Potassium is an essential plant
nutrient and is required in large
amounts for proper growth and
reproduction of plants.
▪ It affects the plant shape, size,
color, taste and other
measurements attributed to healthy
produce.
▪ Plants absorb potassium in its
ionic form, K+.
5. Percentage of potassium in soil
Portion of total K Form of K
90 to 98 percent Potassium containing minerals (Micas,
Feldspars, etc.)
1 to 10 percent Clay minerals (Illitic types)
0.1 to 2 percent Exchangeable K+ and Soil solution K+
6. Roles of Potassium in Plants
In Photosynthesis, potassium regulates
the opening and closing of stomata,
and therefore regulates CO2 uptake.
Potassium triggers activation of
enzymes and is essential for production
of ATP.
Potassium plays a major role in the
regulation of water in plants (osmo-
regulation).
7. (Cont.)
Known to improve drought resistance.
Potassium is essential at almost every step of the
protein synthesis.
In starch synthesis, the enzyme responsible for the
process is activated by potassium.
8. Deficiency Symptoms of Potassium
▪ Chlorosis
▪ Slow or Stunted growth
▪ Poor resistance to temperature changes
▪ Poor resistance to drought
▪ Defoliation
▪ Other symptoms
▪ Poor resistance to pests
▪ Weak and unhealthy roots
▪ Uneven ripening of fruits
10. Potassium in soils
The total K content of soils frequently exceeds 20,000 ppm (parts per million).
11. 1) Unavailable Potassium
90-98% of total soil K is found in this form.
Feldspars and micas are minerals that contain most of the K.
Plants cannot use the K in this crystalline-insoluble form.
Over long periods of time, these minerals weather (break down) and K
is released.
As these minerals weather, some K moves to the slowly available
pool. Some also moves to the readily available pool.
12. 2) Slowly Available Potassium
This form of K is thought to be trapped between layers of clay minerals and
is frequently referred to as being fixed.
Growing plants cannot use much of the slowly available K during a single
growing season.
This slowly available K is not measured by the routine soil testing
procedures.
Slowly available K can also serve as a reservoir for readily available K.
While some slowly available K can be released for plant use during a growing
season, some of the readily available K can also be fixed between clay layers
and thus converted into slowly available K
13. 3) Readily Available Potassium
Potassium that is dissolved in soil water (water soluble) plus that held on the
exchange sites on clay particles (exchangeable K) is considered readily available
for plant growth.
The exchange sites are found on the surface of clay particles.
This is the form of K measured by the routine soil testing procedure.
Plants readily absorb the K dissolved in the soil water.
As soon as the K concentration in soil water drops, more is released into this
solution from the K attached to the clay minerals.
The K attached to the exchange sites on the clay minerals is more readily
available for plant growth than the K trapped between the layers of the clay
minerals.
14. Potassium Releasing From Mica
Its behavior in soil is influenced mostly by cation
exchange reactions than by microbial activity.
17. Inorganic sources of K
Material Chemical Formula K2 O Content %
potassium chloride KCl 60 %
potassium-magnesium sulfate K 2 SO 4 -2MgSO 4 20 %
potassium nitrate KNO 3 44 %
potassium sulfate K 2 SO 4 50 %
Common fertilizer sources of K.
18. Organic sources of K
Break down of crop residues
Manures
A. Majority of K is soluble
a. 80% of total K in manure available the year of application
b. 10% of total K is available 2nd year after application
c. 5% of total K is available 3rd year after application
B. Book values
a. Dairy solids- 9 lb K2O/ton
b. Dairy liquids-20 lb K20/1000gal
C. Book solids
19. Potassium losses from Soil
Erosion: Erosion is one of the main pathways
through which K is lost from the soil.
Runoff: Runoff is one of the main pathways
through which K is lost from the soil.
Leaching: Annual leaching loss of K from the
soils in a humid region under agricultural
production (receiving only a moderate rate of K
fertilizer) is usually about 25 to 50 kg K/ha.
Harvesting: Plants take up very large amounts
of K.
20. Management Practices for Potassium
Suggested management practices for K vary with crop.
The best strategy would be to apply potash fertilizers before seeding
followed by annual top-dress applications.
The annual applications should be based on the results of routine soil tests
for K.
Any potash needed for small grain production can be applied in a band near
the seed at planting or broadcast and incorporated before planting.
When applied in a band, the recommended broadcast rate of potash can be
reduced by one-half without causing a reduction in yield.
21. Application Method and Timing
Band application concentrate nutrients at or near the root zone
Banded K should be placed beside and below the seed level to
reduce potential damage or by using very low rates
Band K application are recommended in soil with strong
capacity to retain K
Deep banding K can be more effective for ridge-till or no till,
where K tends to accumulate at or near the soil surface
Timing of K application typically has little or no impact on K use
efficiency by crops; except in the rare soil with very high K fixing
22. Influence of Potassium on Crop Quality
The economic return from the investment in K can originate
from:
(1)Improvement in total yield;
(2)A greater percentage of total yield which is marketable;
(3)Better crop quality;
(4)Lower cost per unit of production;
(5)Disease resistance;
(6)Stress tolerance;
(7)More effective use of other inputs such as nitrogen (N).
23. Corn
Earlier silking and longer grain fill
Uniform maturity and grain moisture
Improved stalk quality and reduced
lodging
More kernels per ear and better test
weight
Improved N use effectiveness
25. Soybeans
Improved seed size
Fewer shriveled and moldy beans
Improved oil and protein content
More and larger nodules for N fixation
Better tolerance to pests and
improved resistance to disease
26. Environmental effects of Potassium
Potassium has no known deleterious effect on the quality of
natural and drinking waters and it does not induce eutrophication
in rivers and lakes.
Under regular agricultural practices, small amounts of potassium
ions is leached into deeper soil layers and finally reaching the
aquifers, which presents no ecological threat; K in drinking water
and/or food is no hazard for human health provided renal function
is normal.
adequate supply of potassium and better nitrogen management,
nitrogen use efficiency significantly increases, and consequently
the disposed N to the environment is reduced.