Gypsum is a soft mineral composed of calcium sulfate dihydrate that has a long history of use as a soil amendment in agriculture. It was used historically to preserve manure nitrogen and stimulate crop growth. Gypsum application can improve soil health by ameliorating aluminum toxicity, increasing infiltration, and providing sulfur and calcium to crops. Research has shown gypsum reduces phosphorus in runoff and tile drainage, improving water quality in watersheds impacted by agricultural phosphorus. Summaries of multiple studies found gypsum improved crop yields while reducing soil erosion and phosphorus movement from fields.
Introduction
enlist of problematic soil
Salt affected soil
Characteristic of salt affected soil
Comparison between salt affected soil
Reclamation of Saline soils
Reclamation of sodic soils
Reclamation of saline-sodic soils
Acidic soils
Reclamation of acidic soil
Acid Sulphate soils and its management
Calcareous soil
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.
Introduction
enlist of problematic soil
Salt affected soil
Characteristic of salt affected soil
Comparison between salt affected soil
Reclamation of Saline soils
Reclamation of sodic soils
Reclamation of saline-sodic soils
Acidic soils
Reclamation of acidic soil
Acid Sulphate soils and its management
Calcareous soil
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.
The colloidal state refers to a two-phase system in which one material in a very finely divided state is dispersed through second phase.
Eg., Solid in liquid (Dispersion of clay in water) and Liquid in gas (Fog or clouds in atmosphere).
The colloidal state refers to a two-phase system in which one material in a very finely divided state is dispersed through second phase.
Eg., Solid in liquid (Dispersion of clay in water) and Liquid in gas (Fog or clouds in atmosphere).
Fungi have both positive ad negative roles in our daily life. So they are our friends as well as foes (enemy).
They are described as below.
Beneficial Roles or Useful Activities.
i) Fungi are used as food. e.g. Mushrooms and Morels.
ii) Fungi are used in laboratory.
a) Baking Yeast (S. cerevisae)
b) Several alcoholic beverages such as wine, whiskey, beer, rum all are prepared by fermentation activity of sugar solution by wine yeast. (S. ellipsoidens) c) Some fungi are used in production of enzymes like amylase, pectimase
iii) Some fungi are used in production of several antibiotics and antibiotics and other useful medicine like penicillin, streptomycin, ergotine and ephedrine respectively.
iv) Several fungi are used in commercial production of different organic products like citric acid, fumaric, lactic and oxalic acid.
v) Fungi in agriculture:
a) Being saprophytes they decompose the organic matter and enhance the fertility of the soil.
b) Some fungi develop symbiotic relation with roots of higher plant like Pinus and help them in absorption of nutrients. Such fungi are known as mycorrhiza.
vi) Some fungi are used to produce hormone like Gibberellin.
Harmful Activities:
i) Food spoilage (destruction) caused by fungi like mucor and yeast.
ii) Some yeasts causes huge loss in silk industry to attack silk worms and kill the same.
iii) Several types of plant diseases caused by (different types of fungi) species of Nematospra they attack tomatoes, cotton and bean plants.
Similar disease like causal organisms
a. Stem rust of wheat – Pucvinia graministice
b. Early blight of potato – Alternaria solani
c. Late blight of potato – Phytiphtoria infestans
d. White rust of crucifer – Albugo candida
iv) Some fungi (Cryptococcus neoformans) may cause human disease like meningitis and brain tumor.
- Torula and other yeasts produce small nodules on the skin and lesions in the viscera and bones of man.
v) Some fungi are concerned with destruction of substances like attacks textile materials, paper, leather goods, rubber even optical instruments.
vi) Some fungi are not edible mushroom like different species Amanita.
This question has also been asked frequently in HSEB Board Exam as, Explain the economic importance of fungi, Fungi are our friends as well as enemies, Explain. etc.
Gypsum and rubber use in building constructionDeepak Sharma
COMPOSITION OF GYPSUM
Types and source of gypsum
types
Properties of gypsum
Gypsum as BUILDING MATERIAL
RUBBER
It can be classified in two parts:
Types of Rubber :
USES:-
PROPERTIES
GREEN MATERIAL / ECO FRIENDLY MATERIAL
Over the past few decades, the increase in population and advances made in farming technology has increased the demand for crops and livestock from the agricultural industry. This growth in agricultural production has resulted in an increase in contaminants polluting soil and waterways.
ppt of fate of pesticides in environment or environmental polution by pesticidesSundaresh Kalal
Nature is blessed with wide range of organisms where it perfectly balances the food chain and the ecosystem. Pseudomonas fluorescens, P. putida and some fungi antagonists are important biocontrol agents used against plant pathogenic bacteria which are known to produce special structures known as siderophores. Siderophores are defined as relatively low molecular weight, ferric ion specific chelating agents elaborated by bacteria and fungi growing under low iron stress (Neilands, 1981). The role of these compounds is to scavenge iron from the environment and to make the mineral. There are three main kinds of Siderophores known as hydroxamate, catecholate and carboxylate. Most organisms require iron as an essential element in a variety of metabolic and informational cellular pathways. In the aerobic environment iron exists mainly as Fe (III) and tends to form insoluble hydroxides and oxyhydroxides, making it largely unavailable to microorganisms. Therefore, they need mechanisms to solubilize Fe (III) to make it available for uptake; these mechanisms usually involve the production of siderophores.
Agriculture & environmental pollution_Dr Harikumar (The Kerala Environment Co...India Water Portal
This presentation by Dr Harikumar, Scientist, CWRDM made at the Kerala Environment Congress, Trivandrum organised by the Centre for Enviroment and Development provides information about the pollutants in the environmental sectors produced as a consequence of agricultural activities
Engineered biosystem treatment trains: A review of agricultural nutrient sequ...journal ijrtem
ABSTRACT: Nutrient pollution is a problem across the globe. Excess nitrogen(N) and phosphorus(P) are impacting lakes, rivers, and oceans with algal blooms, hypoxia, and fish kills. As such, there are many opportunities for intervening to protect receiving ecosystems from excess nutrients. Historic treatment options have failed to control nonpoint source pollution. New options for trapping and treating intensively managed cropland runoff (IMCR) are presented; with a wealth of wastewater treatment experience in removing N and P, innovation is spilling over into the IMCR world. Agricultural producers can use technology to increase productivity and decrease nutrient runoff to streams and lakes using trap and treat biosystems engineering technology. In-field cover crops and mycorrhizae can be employed to increase nutrient use efficiency. At field-edge and beyond, riparian buffers (surface and subsurface), wetlands (natural and constructed), and varying forms of carbon bioreactors can be utilized for nutrient consumption and sequestration. Options to mitigate IMCR nutrient pollution occur best with landscape treatment trains. The treatment train approach is possible and needed for ecosystem health; however, the key issues are 1) pathway and process awareness, and 2) balancing who pays the cost for best management practices and who reaps the benefits.
KEYWORDS: nitrogen, phosphorus, nonpoint source pollution, treatment train
Fate of manure nitrogen applied for grass silage productionLPE Learning Center
The full proceedings paper is at: www.extension.org/72781
Previous research conducted in western Washington State has demonstrated that when manure N is applied at rates greater than needed for grass uptake, excess N in soil in the form of nitrate-N can leach to shallow groundwater during the months of high rainfall. In a prior study, it was evident that tillage and reseeding of the cropland was a contributor to loss of nitrate–N from soil to underlying groundwater. The objective of this study was to characterize the effect of re-seeding of cropland using minimum tillage and conventional tillage methods on crop uptake of nitrogen, soil nitrate-N concentration, nitrate concentration in shallow ground water underlying the field, and the relationships between these matrices.
Effects of Irrigation Practices on Some Soil Chemical Properties on OMI Irrig...IJERA Editor
Irrigation practices have been observed to impact scheme soil properties and other parameters negatively. These could be as a result of irrigation water quality, method of application and nature of scheme soil. This study was therefore conducted to study the effects of irrigation practices on the soils of Omi irrigation scheme Kogi state, Nigeria after 13years of operation. Soil samples were taken at depths 0 – 20 cm (A1), 20 – 80 cm (A2) and 80 – 120 cm (A3) from two operating lands (OL); OL 5 and OL 18 of the study area. The samples were analysed for chemical parameters (pH, CEC, ESP, Mg2+, Ca2+, OM, and OC). The soil pH which was in the neutral range (pH=6.65 to 7.00) at inception of scheme, has become slightly acidic (pH=6.53 to 6.60). Cation exchange capacity (CEC) levels have also increased from 10cmol+kg-1 to 35cmol+kg-1. While Organic matter (OM) and Organic carbon (OC) also have marked increase in their levels (baseline as 0.93 to 1.08; for year 2013 as 9.52 to 9.79). Generally, the analysis indicated a need for proper monitoring of the scheme soil to prevent further deterioration.
FAO Status and Challenges of Soil Carbon Sequestration Soils FAO-GSP
GSP Webinar: RECSOIL: Recarbonization of Global Soils, 17 June 2020, Zoom platform. Presentation by Rattan Lal, Distinguished University Professor of Soil Science and Director of the Carbon Management and Sequestration Center, The Ohio State University, Ohio, USA.
This presentation summarizes the ongoing Canada-wide SWM pond sediment chemistry study, which Francine Kelly-Hooper began in 2005. The results demonstrate that most sediments would require regulated waste management due to exceedences of the Ontario Regulation 153/04 soil standards. Non-hazardous landfill disposal is currently the most common practice, which is extremely expensive and environmentally unsustainable. However, the chemistry data also demonstrates that the sediments would meet Ontario biosolids guidelines and Ontario Nutrient Management Act land application requirements if matched to the appropriate recipient site. This is the premise for the Canadian Food Inspection Agency's first approval of a field pilot study that will use SWM pond sediment as topsoil amendment materials on tree nursery soils.
Title: Wastewater treatment based on reactive filter media
presented by Anders Norén, Bioptech
ACQUEAU Workshop on Industrial Waste Water Treatment 12 March 2015
Climate change impacts on soil health and their mitigation and adaptation str...Rajendra meena
The increasing concentration of greenhouse gases (GHGs) is bringing about major changes to the global environment resulting in global warming, depletion of ozone concentration in the stratosphere, changes in atmospheric moisture and precipitation and enhanced atmospheric deposition. These changes impact several soil processes, which are influence soil health. Soil health refers to the capacity of soil to perform agronomic and environmental functions. A number of physical, chemical and biological characteristics have been proposed as indicators of soil health. Generally, biological processes in soil such as decomposition and storage of organic matter, C and N cycling, microbial and metabolic quotients are likely to be influenced greatly by climate change and have thus high relevance to assess climate change impacts (Allen et al., 2011). Soil organic matter (SOM) exerts a major influence on several soil health indicators and is thus considered a key indicator of soil health. An optimal level of SOM is essential for maintaining soil health and alleviating rising atmospheric CO2 concentration. Elevated CO2 has increased C decay rates generally but in some cases elevated CO2 increases soil C storage (Jastrow et al., 2016). Enhancing the soil organic carbon pool also improves agro-ecosystem resilience, eco-efficiency, and adaptation to climate change. Healthy soils provide the largest store of terrestrial carbon, when managed sustainably; soils can play an important role in climate change mitigation by storing carbon (carbon sequestration) and decreasing greenhouse gas emissions in the atmosphere (Paustian et al., 2016).
Wright et al., (2005) reported that no tillage increase soil organic carbon (SOC) and nitrogen (SON) 11 and 21% in corn and 22 and 12 % in cotton than conventional tillage. Agroforestry system at farmers’ field enhance soil biological activity and amongst trees, P. cineraria based system brought maximum and significant improvement in soil biological activity (Yadav et al ., 2011).
"Understanding the Carbon Cycle: Processes, Human Impacts, and Strategies for...MMariSelvam4
The carbon cycle is a critical component of Earth's environmental system, governing the movement and transformation of carbon through various reservoirs, including the atmosphere, oceans, soil, and living organisms. This complex cycle involves several key processes such as photosynthesis, respiration, decomposition, and carbon sequestration, each contributing to the regulation of carbon levels on the planet.
Human activities, particularly fossil fuel combustion and deforestation, have significantly altered the natural carbon cycle, leading to increased atmospheric carbon dioxide concentrations and driving climate change. Understanding the intricacies of the carbon cycle is essential for assessing the impacts of these changes and developing effective mitigation strategies.
By studying the carbon cycle, scientists can identify carbon sources and sinks, measure carbon fluxes, and predict future trends. This knowledge is crucial for crafting policies aimed at reducing carbon emissions, enhancing carbon storage, and promoting sustainable practices. The carbon cycle's interplay with climate systems, ecosystems, and human activities underscores its importance in maintaining a stable and healthy planet.
In-depth exploration of the carbon cycle reveals the delicate balance required to sustain life and the urgent need to address anthropogenic influences. Through research, education, and policy, we can work towards restoring equilibrium in the carbon cycle and ensuring a sustainable future for generations to come.
Characterization and the Kinetics of drying at the drying oven and with micro...Open Access Research Paper
The objective of this work is to contribute to valorization de Nephelium lappaceum by the characterization of kinetics of drying of seeds of Nephelium lappaceum. The seeds were dehydrated until a constant mass respectively in a drying oven and a microwawe oven. The temperatures and the powers of drying are respectively: 50, 60 and 70°C and 140, 280 and 420 W. The results show that the curves of drying of seeds of Nephelium lappaceum do not present a phase of constant kinetics. The coefficients of diffusion vary between 2.09.10-8 to 2.98. 10-8m-2/s in the interval of 50°C at 70°C and between 4.83×10-07 at 9.04×10-07 m-8/s for the powers going of 140 W with 420 W the relation between Arrhenius and a value of energy of activation of 16.49 kJ. mol-1 expressed the effect of the temperature on effective diffusivity.
UNDERSTANDING WHAT GREEN WASHING IS!.pdfJulietMogola
Many companies today use green washing to lure the public into thinking they are conserving the environment but in real sense they are doing more harm. There have been such several cases from very big companies here in Kenya and also globally. This ranges from various sectors from manufacturing and goes to consumer products. Educating people on greenwashing will enable people to make better choices based on their analysis and not on what they see on marketing sites.
Artificial Reefs by Kuddle Life Foundation - May 2024punit537210
Situated in Pondicherry, India, Kuddle Life Foundation is a charitable, non-profit and non-governmental organization (NGO) dedicated to improving the living standards of coastal communities and simultaneously placing a strong emphasis on the protection of marine ecosystems.
One of the key areas we work in is Artificial Reefs. This presentation captures our journey so far and our learnings. We hope you get as excited about marine conservation and artificial reefs as we are.
Please visit our website: https://kuddlelife.org
Our Instagram channel:
@kuddlelifefoundation
Our Linkedin Page:
https://www.linkedin.com/company/kuddlelifefoundation/
and write to us if you have any questions:
info@kuddlelife.org
WRI’s brand new “Food Service Playbook for Promoting Sustainable Food Choices” gives food service operators the very latest strategies for creating dining environments that empower consumers to choose sustainable, plant-rich dishes. This research builds off our first guide for food service, now with industry experience and insights from nearly 350 academic trials.
1. OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Gypsum as a Soil Amendment and
Potential for Water Quality
Benefits: Ohio Case Stury
Warren A. Dick
The Ohio State University
dick.5@osu.edu
2. 2
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
What is Gypsum?
Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the
chemical formula CaSO4·2H2O. The word gypsum is derived from a Greek word
meaning "chalk" or "plaster". Gypsum is moderately water-soluble. The source of
gypsum is both mined and synthetic.
Gypsum from New South
Wales, Australia
Gypsum Powder
3. 3
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Early History
Benjamin Franklin
“This hill has been
land plastered”
4. 4
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Early History
Dr. William Crocker - History of the
Use of Agricultural Gypsum. 1922.
Gypsum Industries Association,
Chicago, IL (p. 7-36)
I. The Early Use of Gypsum as a
Fertilizer
II. Recent Studies on the Function
and Quantity of Calcium and Sulphur
in Crops and and the Supply of
Sulphur in our Agricultural Soils.
III. Calcium in the Nutrition of Plants
5. 5
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Early History
History of the Use of Agricultural
Gypsum. 1922. Gypsum Industries
Association, Chicago, IL (p. 7-36)
IV. Gypsum as a Stimulant
V. Gypsum as Specific for Black Alkali
VI. Gypsum as a Preserver of
Manure
VII. Effect of Gypsum on the Nitrogen
Available for Crops
VIII. Gypsum Not a Substitute for
Agricultural Lime
6. 6
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
History of Gypsum in Agriculture
Gypsum as a Preserver of Nitrogen – In pioneering
work by Heiden:
“Gypsum has great power in preserving the volatile nature of
manure. It does this in large part by transforming the volatile
ammonium carbonate into the non-volatile ammonium sulfate
with the formation of calcium carbonate.”
Further work on this topic was done by Ames and Richmond at
The Ohio State Agricultural Experiment Station (Soil Science,
4:78-89, 1917). Using gypsum to preserve nitrogen for a 20 cow
herd could provide $152 benefit in one year.
7. 7
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Relative Numbers of Atoms
Required by Plants
Mo 1
Cu 100
Zn 300
Mn 1,000
B 2,000
Fe 2,000
Cl 3,000
S 30,000
P 60,000
Mg 80,000
Ca 125,000
K 250,000
N 1,000,000
O 30,000,000
C 35,000,000
H 60,000,000
8. 8
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Causes of Sulfur Deficiencies
in Crops
Shift from low-analysis to high-analysis
fertilizers
High-yielding crop varieties remove more
S from fields at harvest
Reduced atmospheric S deposition
Declining S reserves in soil due to loss of
organic matter (erosion and tillage),
leaching, and crop removal
9. 9
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
3 4 5 6 7
10
20
30
40
50
60
70
Depth(cm)
pH
pH
Al3+
Typical pH profile for a
Blount soil
10. 10
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
limestone + gypsumlimestone
1 2 3
Corn Root Density m/1000 cm3
Depth
(cm)
20
40
60
80 Modified from Farina &
Channon, SSSAJ (1988)
CaSO4 + Al3+ Al(SO4)+ + Ca2+
(toxic) (non-toxic)
Gypsum can ameliorate
aluminum toxicity,
especially in the subsoil,
by forming soluble
complexes with Al3+.
12. 12
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Two specific objectives:
(1) Demonstrate at a field-scale the practical application of
gypsum agricultural fields to reduce phosphorus loading to
surface waters in the Maumee River and Grand Lake St. Mary’s
watersheds in Ohio.
(2) Assess typical on-farm management practices to
document/demonstrate agricultural practices that can best
take advantage of FGD gypsum to enhance crop yields.
Ohio Department of
Development Project
13. 13
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Soil Test Values - Sulfur
Year (20yy)
SoilSulfurContent(ppm)
Y = 28.6** - 1.74**
R2 = 0.86
02 03 04 05 06 07 08 09 10 11 12 13 14
40
30
20
10
0
14. 14
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Average Corn Yields from
2002 to 2005 (Ohio)
N Rate (kg ha
-1
)
0 50 100 150 200 250
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
Y=5.80+0.029x-0.00009x2
(R2
=0.85)
Y=5.19+0.021x-0.00003x
2
(R
2
=0.96)
S
No S
CornGrainYield(Bu/A)
170
150
130
110
90
0 45 90 135 180 225
N Rate (lbs/A)
(R2 = 0.85)
(R2 = 0.96)
16. 16
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Phosphorus and Soil
Management
Site Total P
(0 - 12 in)
Soluble P
(0 – 0.5 in)
Wooster 580 (PT)
609 (NT)
45 (PT)
160 (NT)
Hoytville 867 (PT)
868 (NT)
38 (PT)
282 (PT)
17. 17
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Water soluble P in 0.5 in soil layer
(4 T/A gypsum, 1:3 w/v soil:water)
0.000
1.000
2.000
3.000
4.000
5.000
6.000
7.000
8.000
9.000
10.000
CS - C CC CS – S
Hoytville Samples
+ Gypsum
- Gypsum
Crop Rotation
10
8
6
4
2
0
SolubleP(ppm)
18. 18
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Water Quality Benefits
Effect of Gypsum on Water Runoff, Soil Erosion
and Soluble Reactive Phosphorus (SRP)
19. 19
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Samples were collected
from the Rolland Wolfrum
Hale Farm (Hicksville,
OH) on December 20,
2012.
Tile Drain
20. 20
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Samples collected from the Ken Hahn Farm (Antwerp, OH) on
January 6, 2013.
Tile Drainage Samples (1)
21. 21
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Effect of Gypsum on P
in Surface and Tile Waters
(Kevin King USDA-ARS)
Mercer County very near to the Grand Lake St. Marys watershed
Overall Conclusion (to date)
For water quality, the benefit of gypsum
was to decrease soluble P concentrations
and loading in surface water runoff and
also concentrations of soluble and total P
in tile discharge. When considering overall
P loadings as well as concentrations, the
water quality benefits after one year of
gypsum were minimal. Testing into a
second or third year will be extremely
important to determine the longer-term
benefits of gypsum to affect water quality.
22. 22
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Summary of Gypsum Application Effects
The equation of the line that defines the points on the graph is y =
43.85 – 0.02063x where “y” is the percent reduction in
phosphorus concentration and “x” is the number of days since
gypsum application.
Tile Water Drainage
Results – (through
June 29, 2015)
(1) 89 Events Sampled
(2) 9 Locations
(3) P concentrations
Gyp(-) = 0.086 mg/L
Gyp(+) = 0.055 mg/L
36% reduction
23. 23
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Precipitation pH and Phosphorus
National Atmospheric Deposition Program (NRSP-3). 2007. NADP Program Office, Illinois
State Water Survey, 2204 Griffith Dr., Champaign, IL 61820
4.1
4.5
4.9
5.3
5.7
Lab pH
24. 24
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Precipitation pH and Phosphorus
Phosphorus is the nutrient most directly affected by soil pH
Soil pH
25. 25
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
National Standard
Notice of Proposed Changes to the National Handbook of Conservation Practices for the Natural Resources Conservation
Service
[Docket No. NRCS-2015-0003]
PROPOSED FULL TEXT FOR PRACTICE STANDARD CODE 333 (333-CPS-1)
Natural Resources Conservation Service
CONSERVATION PRACTICE STANDARD
AMENDING SOIL PROPERTIES WITH GYPSUM PRODUCTS
Code 333 (Ac.)
DEFINITION
Using gypsum (calcium sulfate dihydrate) derived products to change the physical and/or
chemical properties of soil.
PURPOSE
• Improve soil health by improving physical/chemical properties and increasing
infiltration of the soil.
• Improve surface water quality by reducing dissolved phosphorus concentrations in surface
runoff and subsurface drainage.
• Improve soil health by ameliorating subsoil aluminum toxicity.
• Improve water quality by reducing the potential for pathogens and other contaminants
transport from areas of manure and biosolids application.
27. 27
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Increasing National Interest at the
Scientific Level
https://groups.yahoo.com/neo/groups/Gypsum/info
28. 28
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
The article (left) is a good
overview of the problem
and the current level of
scientific understanding of
its cause.
https://www.agronomy.org/publications/csa/pdfs/60/2/4
www.agronomy.org/fil
es/publications/crops
-and-soils/amending-
soils-with-
gypsum.pdf
29. 29
OHIO AGRICULTURAL RESEARCH AND DEVELOPMENT CENTER
Conclusions
Gypsum, as an agricultural amendment, can provide
multiple benefits including:
(1) improved crop production,
(2) reduced soil erosion, and
(3) reduced phosphorus movement off of agricultural
fields.
This leads to a win-win-win situation.