Kieserite Fertilizer (magnesium sulfate monohydrate) Granules

1. Core Functions: Addressing Primary Issues in Crop Growth

2. Indirect Auxiliary Effects: Improving Both Quality and Yield

Yield Improvement: The application of kieserite fertilizer granules at a rate of 15 kilograms per mu to sugarcane fields results in a yield increase between 10 percent and 12 percent. The application of 1 percent kieserite fertilizer granules solution to grapes during their flowering period leads to an 18 percent increase in fruit set rate.

Soils with Long-term High-concentration Compound Fertilizer Application: Balance nutrients and prevent magnesium imbalance.

4. Kieserite Fertilizer Granules Improving Nutrient Deficiency Symptoms

Magnesium Deficiency Symptoms: Chlorosis appears between the veins of old leaves while reticular veins and leaf necrosis occur in severe cases.
Sulfur Deficiency Symptoms: The plants show stunted growth while their leaves develop curls and brittleness and their flowering stage begins later than normal.

• Cotton plants develop chlorosis between their leaf veins because they lack sufficient magnesium but their veins remain green.
• Rice plants develop a yellow appearance while their height remains unchanged and their middle and lower leaves droop downward with interveinal chlorosis.
• Potato plants display brittle lower leaves which curl toward the leaf surface while old leaves develop chlorotic leaf edges.

III. Applications of Kieserite Fertilizer Granules, under different Agroconditions.

1. Kieserite Fertilizer Granules Application Methods

• Base Fertilizer: Before plowing work begins farmers should apply 10 to 15 kilograms of kieserite fertilizer granules per mu which they must combine with organic fertilizer for spreading purposes.
• Topdressing: During the growing season farmers should apply 10 to 13 kilograms of kieserite fertilizer granules per mu through fertigation while they should use 250 to 500 grams of the fertilizer for each fruit tree.
• Foliar Spraying: For fruit trees the solution should be used at 0.5 to 1percent concentration while vegetables need 0.2 to 0.5percent solution and food crops require 0.3 to 0.8percent solution; farmers should apply 50 to 150 kilograms of solution per mu with 7 to 10 days between applications.
• Drip Irrigation Fertilization: The system dissolves material through irrigation systems which farmers can use for high-value crops that include greenhouse vegetables and strawberries.

2. Duration and Rates of Application of Kieserite Fertilizer Granules

• Lawns: Apply 5-8kg of kieserite fertilizer granules per mu during the growing period, via fertigation.
• Betel Nut: Apply 200-300g of kieserite fertilizer granules per tree during the fruiting period, mixed with organic fertilizer.
• Sugarcane: Apply 15-20kg of kieserite fertilizer granules per mu during the tillering stage as base fertilizer.
• Food Crops: Apply 8-10kg of kieserite fertilizer granules per mu during the seedling stage as topdressing.
• Cash Crops: Apply 12-15kg of kieserite fertilizer granules per mu during the flowering and fruiting period, supplemented with foliar spraying.
• Fruits and Vegetables: Apply 10-13kg of kieserite fertilizer granules per mu during the fruiting period, combined with foliar spraying.

3. Dilution and Application Rates for Kieserite Fertilizer Granules.

• Foliar Spraying: The solution should be diluted 1000-1500 times and applied once every 7-14 days while severe nutrient deficiency requires an 800-1200 time dilution for application every 7-10 days.
• Soil Irrigation: The solution should be diluted 800-1200 times and applied for irrigation every 7-14 days.

4. Precautions

• Compatibility: The combination of phosphorus fertilizers with alkaline fertilizers should be avoided because it creates a risk of precipitation and decreases fertilizer effectiveness.
• Application Timing: The product should be sprayed during sunny days at morning and evening times while high temperatures are to be avoided; base fertilizer should be applied before plowing and topdressing should be done at the beginning of the day.

5. Application Cases: Betel Nut and Tea

• Betel Nut Orchards: Adult trees during flowering should receive a 0.8% kieserite fertilizer granules solution combined with 1kg/tree base application which decreases fruit drop rate by 22% and increases tree yield by 15%.
• Tea Gardens: The application of 0.2% kieserite fertilizer granules through fertigation should occur before spring tea which results in an 8% increase of tea amino acid content and a 5% decrease of tea polyphenol content that improves taste.

IV. Precautions for the safe and efficient use of Kieserite fertilizer granules.

1. Compatibility Taboos

• Phosphates (superphosphate, potassium dihydrogen phosphate): Form magnesium phosphate precipitates, reducing fertilizer efficiency.
• Strongly Alkaline Pesticides (Bordeaux mixture, lime-sulfur mixture): Destroy pesticide structure and cause phytotoxicity.
• High-concentration Calcium Fertilizers (calcium nitrate): The substances compete for absorption which results in 30% reduced magnesium absorption.

• The procedure requires people to perform "dilute first, then mix" operations in that order.
• The product must be used immediately after mixing because storing it for extended periods will result in precipitation and decreased efficacy.
• A small-scale test must take place before the first mixing process to confirm that precipitation and efficacy reduction do not occur.
• The product can achieve better results when mixed with nitrogen and potassium fertilizers.

2. Hazards of Over-application and Remedies

• Hazard Manifestations:
  • Crops show root browning and leaf edge scorching which leads to seedling burning.
  • Soil has an electrical conductivity EC value that exceeds 2.5 millisiemens per centimeter which indicates soil salinization and causes damage to its aggregate structure.
• Methods to Judge Over-application:
  • Crop Performance: New leaf yellowing and growth stagnation and root browning.
  • Soil Testing: Soil EC value exceeds 2.5 mS/cm or the soil contains excessive exchangeable magnesium content.
• Remedial Measures:
  • Stop applying magnesium-containing fertilizers.
  • The process of leaching soil requires the application of large water volumes which range from 50 to 80 cubic meters for each mu of land.
  • The application of organic fertilizer at a rate of 1000 kilograms per mu or bio-fertilizer will enhance the soil structure.
  • The application of 0.3% amino acid solution on leaves helps to reduce stress in crops.

3. Storage Requisites for Kieserite Fertilizer Granules

Optimal Matching Schemes

• Organic Fertilizers: Applying fertilizers together with various organic materials results better magnesium absorption while improving soil structural integrity.
• Nitrogen and Potassium Fertilizers: The system achieves effective balanced fertilization through the combination of urea with potassium sulfate and other fertilizers.
• Trace Element Fertilizers: The application of trace element fertilizers with zinc and boron creates combined effects.

V. Kieserite Fertilizer Granules Production Process: Quality Control from Raw Materials to End Product

Detail on classes of spectra and their purpose

(1) Natural Bittern Extraction Method

• Raw Material: Bittern after seawater salt production (containing 8%-12% MgSO₄).
• Steps:
  1. Purifiction: Halt the contamination of foreign element(Fe2+and Ca2+) by decoctioning lime dilution and adjusting the pH of upto 9.0-9.5.
  2. Concentration: A multi-effect evaporation (with temperatures of 60-70℃, -0.08MPa under vacuum condition).
  3. Crystallization: Magnesium sulfate heptahydrate occurs in temperature less than 32.4° C while magnesium sulfate monohydrate develops between 32. 4° C and 100° C.
  4. Drying: This is accomplished using air drying with a drying chamber (temperature 80-90℃, limiting moisture content level to less than 1%).
• Advantages: Natural raw materials, low cost, purity up to 99.5% or higher.

(2) Obtaining High-purity Magnesium Sulfate (MgSO4) Using Sulfuric Acid (H2SO4) (The Core Process of Laizhou Baiyexin)

• Ingridients: Magnesite (the purity of MgCO₃ is above 90%) and commercial sulfuric acid (the purity of H₂SO₄ is higher than 98%).
• Conditions of the reaction: The temperature is held at 50-60℃, the time over which a reaction occurs is 2-3 hours, the pH is regulated and maintained between the values 5.5 and 6.0.
• Output product: According to Laizhou Baiyexin it is at least 99.5% pure and is applied in durable artificial resins for the preparation of foliar-sprays especially in industries engaged in food process.

(3) By-Product up-cycling (Perforations of Nature Conservation and Resilience Folding to Waste Minimization)

• Initial Material: Waste derived from boron containing raw materials - borax industry (25 - 30% of sulfate from carrakashy deposits).
• Form: characterized by high production costs, acceptable structural composition of Mg mineral and a low content of impurities including heavy metals (up to 0.001 %); applicable in fertilization of lawns.

VI. Classification and Characteristics

Classification by Purity and Purpose

Classification by Physical Form

Crystalline Kieserite Fertilizer Granules: Needle like or columnar forms of magnesium sulfate heptahydrate, fluidity adequate for granules. It is applied to the soil as a base fertilizer, moderate in absorption of moisture; must be kept in dry and cool places.

Liquid Kieserite Fertilizer Granules:This type of Kieserite Fertilizer is supplied as a concentrated aqueous solution of 10 %-30 % concentration, which is ready for use in drip irrigation systems or foliar applications. It provides minimal difficulty in application and is effective in short duration.

Special Types of Kieserite Fertilizer Granules

• Chelated Kieserite Fertilizer Granules: Granules of better-delimited shape and size, generally less dusty. Magnesium sulfate chelators, such as EDTA, have been used to increase magnesium sulphate stability. Relatively less percolation of this fertilizer is observed in soils containing 50−100−mg/kg magnesium compared with ordinary magnesium sulfate at this concentrations. This type of fertilizer is affordable to most customers with the creation of high-quality margins and suitable for customers with the presence of such soils.
• 0-33-0 MP Kieserite Fertilizer Granules: This fertilizer is in form of granules and can contain some other minor/trace elements : mp-Zn and Sulfur containing magnesium fertilizers, mp-B and Sulfur containing magnesium fertilizers and etc, in order to easy adoption for multiple and specific crop fertilization.
• Slow-release Kieserite Fertilizer Granules: The pellet can also adopt the method of coating or double-layered structure, which will create a cycle of between 2 and 3 months for nutrient release to be complete. This enhances the nutrient coverage period and convenience in management, and particularly apt for tree fruits and other biennial crops.

Purity Differences And Selection Criteria

• 98% purity: It is good enough for crops and ground training purposes along with being cheap.
• 99% purity: It is more suitable for aerial application and for organic farming and high value farming with minimum impairment and maximum safety.

• When applying soil base, ensure that the product is 98% pure.
• For foliar spraying, purity levels of 99% or more are recommended.
• For saline-alkali soils, use more pure products for the prevention of other ions’ influence.
• The selection of purity level will depend on the cost when it comes to establishment of seedlings or whether the planting will be of high or low density in this region.

VII. Comparison with Similar Fertilizers

Comparison with Other Magnesium Fertilizers

Comparison with Other Sulfur Fertilizers

• The application of Ammonium Sulfate: Provides a substantial balance in nitrogen and sulfur levels increased, however added to the land over a long period may make the soil more acidic. Mainly intended for higher nitrogen demand-intake crops; nitrogen is not easily preserved in flooded rice fields.
• Potassium Sulfate: Includes both potassium and sulfur, is good for potassium-demanding plants but expensive. Particularly, in potassium poor soils it has a distinctive comparative advantage.”
• Magnesium Sulfate: is a complex with magnesium and is deficient in nitrogen, potassium and contains sulfur. It is used in conditions that demand the addition of magnesium or avoid excess nitrogen or potassium except an example at fruit tree enlargement at fruit growth during nitrogen-phase. Its application does not hold any limitation as it addresses magnesium and sulfur deficiencies at the same time, though the former problem is not resolved with other sulphatermenters in the soil.

Differences Between Kieserite Fertilizer Granules and Epsom Salt

• Purity Criteria: Medical grade Epsom salt is generally expected to have 99.5% purity or more with very strict procedures in place to control impurities; agricultural grades are less specialized and rely on purity levels ranging between 95% and 99%.
• Production Standards: On the other hand, Epsom salt conforms to medicinals’ safety norms, and agriculture applies agricultural-grade means following fertilizer control.
• Forms of Application: In the former case, Epsom salt is used for medical purposes such as a purgative and ant-inflammatory agent, but in the latter case, agricultural magnesium sulfate is only used for crop fertilization.Price Difference: In general, the cost of Epsom salt is about three to five times the price of agricultural magnesium sulfate.

VIII. Market and Purchase Guide

Market Scale and Production Capacity Distribution

• Pakistan: They have an extensive production capability of around 800,000 tons per year used mainly for the Middle East region planting cotton.
• Kenya: Imports about 100,000 tons every year and 90 % of this is consumed locally (tea and coffee).
• India: India produces 600,000 tons, which they mainly consume within the country (for use on sugarcane and betel nut).

Straw Quota Allocation and Application Types

Analysis of Mainstream Brands

Kieserite Fertilizer Granules Price System: Classified by Specification

• Purity: When the purity increases by 1%, there is an approximate price increase of 5%-8%.
• Hydration State: Anhydrous is superior to Monohydrate which is again superior to Heptahydrate.
• Packaging Specification: Unit costs are generally lower for large packs by around 15%-20% compared to smaller packs.
• Purchase Quantity: If one buys on a ton level, they save 10%-15% in comparison to the customary retail price.
• Regional Differences: In areas close to the source of production, the prices are lower; In contrast, in the interiors, the prices are higher as a result of cost of transportation.

Purchase Criteria and Authenticity Identification

• Product Labeling: Purity, magnesium concentrations, and production regulations (such as HG/T 2933-2000) should be labeled correctly and without objections.
• Production Qualifications: Verify whether this manufacturer holds a fertilizer manufacture permit along with an audit certificate.
• Appearance Quality: Good products are expected to have an even color with less perceptible impurities and a stable shape of a crystal or a powder.

• Solubility Test: About a pinch of the material is placed into a base of water to see to it that pure magnesium sulfate completely dissolves without forming precipitate or any loose granular residues.
• pH Test: This water based solution should ideally be a little below the neutral (5.0 -7.0).
• Observation of Crystals: The shape of crystals of magnesium sulphate is seven water is needle like that is heptahydrate and the last one that is one water is powdery.
• Verification of the Label: First of all, the package present should not be without a CAS number or a standard concentration or even their contents; because the product with such reasons should not be purchased at all.

• Field Crops: For such an application, 98 percent pure magnesium sulfate heptahydrate is appropriate.
• Foliar Spraying: It is advisable to use monohydrate or anhydrous form of magnesium sulphate of 99 percent purity.
• Local Purchase: Purchase from production regions, for example, Laizhou Baiyexin which is far away, so they will incur significant savings in transport expenses up to 200 – 300 RMB per ton traveled cargo.

IX. There are several benefits of Laizhou Baiyexin Kieserite Fertilizer Granules.

Product Characteristics and Core Advantages

• High Purity Guarantee: The Magnesium oxide content of the magnesium fertilizer granules processed and manufactured by Laizhou Baiyexin reaches over 99.5% and the magnesia content (over 9,8 for heptahydrate and 17,2 for monohydrate) is much higher when compared to the average industry figure. Only products with such parameters and low impurity quantities are qualified for distribution, to enable safe uptake by plant systems.
• Customized Services: It is possible to provide an optimal content of trace elements depending on the requirements of the client (e.g. more Zn or Boron if required for deficient multi-nutrient fields).
• Diversified Product Range:The enterprise has magnesium sulfate in its assortment of production which includes but is not limited to;Agricultural size KIESERITE fertilizers such as Kieserite Granules and Kieserite Crystals, Kieserite Liquid Granule Fertilizers, Fertilizer type Kieserite Granules and finally Powdered form KIESERITE fertilizers – all of which function effectively while catering to different needs.All these products very suitable for the various crops and ways of usage practicing the so-called “one-stop shopping”.
• Advanced Production Technology: With an ease of access to the huge deposits of mineral resources in Laizhou, the company has improved on the extraction process through its various adaptations - including precision filtration and multi effect evaporation, which are all aimed at i enhancing this process. Such processes are carried out within the cleanest conditions possible and therefore, high purity of the products is guaranteed. It is worth mentioning that the entire manufacturing process is controlled in the most advanced manner to enable consistent and reproducible product quality.

Kieserite Fertilizer Granules Packaging Specifications and Material Advantages

• Common Specifications: There are 5kg sizes intended for farmers, 25kg for farmers groups, 50kg for field units, and 1-ton for bulk agents, taking into consideration the size of the planting farms.
• Packaging Materials: These products are packed in multiple composite woven bags which are moisture proof due to a PE film inside and tear-resistant due to the outer woven fabric.
• Special Designs: All bags have moisture-proof valves to add there for convenience of storage and use and easy tear derivatives.
• Clear Labeling: No bag is left blank but each one shows instructions constraining specifications, content, application, and safety.

Corporate Advantage of Laizhou Baiyexin: 6 Aspects

1. Production Area Advantage: The manufacture is based in Laizhou which is a primary production area for producing kieserite fertilizer granules in the country hence boosting the producers and cutting down on the cost of through supply.
2. R&D Strength: It has an experienced research and development team, and it supports the involvement of agricultural organizations in developing magnesium sulfate zinc sulfateprisitting solutions wslllirtu!, lembost and specialized formulas for plain slaness and acid soils among others.
3. Strict Quality Control: More than 36 tests are conducted for every single batch of product and the level of heavy metals does not exceed 0.00005% which fully meets the requirements of GB/T 26568 – 2011.
4. Supply Chain Guarantee: Claaaaph conveniences include their own fleet for various loads which cuts customers logistics costs.
5. After-sales Response: Similar solutions are provided to customers beyond simply selling products.
6. Technical Support: Specific professional technical assistance is also provided like soil analysis suggestions, preparation of a fertilization plan, finding out if any deficiency in nutrients exists, to generate extra profits for the clients.

X. Special Scenarios and Research Progress in Chapter

Extreme Environments Attending Precautions Per Application

Application in Saline-alkali Soils

• Precautions: These types of soils are typical with a high composition of magnesium with no to or little effect on its availability; they need conditioners for optimum usefulness.
• Application Plan: All applications should follow the rule ''frequent small applications rather than infrequent large doses''; it is preferable to apply it to the leafy tissues (forged into a concentration of 0.5-1%); and for soil application, it is necessary to include such conditioners as gypsum.
• Dosage Adjustment: The amount applied should be less by 20%-30% compared to the usual practice in order not to intensify the problem of soil salinization.

Application in Acidic Soils

• Precautions: As magnesium is often deficient in acidic soils, a one-time long-term use should be discouraged to avoid causing too much drop in pH.
• Application Plan: Use organic fertilizers and dolomite powder along with base application in addition to foliar spraying.
• Special Measures: Analysis of soil pH levels should be done once in 2–3 years; do not apply if pH is less than 5.0.

Arid and Rainy Areas

• Arid Areas: encourage the use of drip irrigation systems when necessary to reduce the surplus water use; prevent the use of fertilizer during excessively hot weather.
• Rainy Areas: have a larger basal dress and fewer top dressing, prefer a granular product which reduces leaching.

Present status of research and technological progress

Cross-application Expansion

Use in the Horticulture Field

XI.Frequently Asked Questions (FAQs)

What is Kieserite Fertilizer Granules used for?

Kieserite fertilizers, such as magnesium sulphate, are mostly used because they provide the magnesium and sulfur nutrients important for crop growth, they correct deficiency symptoms and improve yields and quality of crops. On the other hand, they improve the pH of the soil and the way in which other nutrients in that soil are held and transported.

How much nutrient of Kieserite Fertilizer Granules?

This depends upon the extent of hydration of the product in question, which can be revealed as follows:

Magnesium sulfate heptahydrate: Approximately ~9.8% Mg and ~13% S

Magnesium sulfate monohydrate: Approximately ~17.2% Mg and ~22.5% S

Anhydrous magnesium sulfate: Approximately ~19.6% Mg and ~26.6% S

Can magnesium sulphate be combined with NPK fertilizers?

Can magnesium sulphate be used in nitrogen and potassium fertilizer mixtures for enhanced efficacy? However, it is noted that care should be taken not to intermingle it with phosphorus fertilizers as such a precautionary measure will protect against the formation of insoluble Magnesium Phosphate precipitates. In terms of simultaneous application, an interval of 3-5 days is proposed.

Kieserite Fertilizer Granules, Type of Fertilizer?

Yes, magnesium sulfate is considered as an essential medium and secondary element fertilizer. It is a water-soluble fertilizer and can satisfy two secondary nutrients, magnesium and sulfur, at a time.

Is magnesium sulfate a useful crop fertilizer?

Magnesium sulfate is an effective fertilizer for correcting deficiencies of magnesium and sulfur, particularly in treating nutrient–deficient soils for magnesium crops. However, it is important to balance between its use and respect of the principle of ‘on demand use,’ because not all crops or soils require a lot of it.

How to Use Magnesium Sulphate as a Fertilizer?

Crop needs and methods of application:

a. Spray application: 0.5-2% concentration.

b. Based on Soil: 10-25kg/mu.

c. Drip Irrigation: 0.1-0.3% concentration.

It is best to locate the application of these pellets in the growth stages that have a high requirement for nutrients especially when the nutrients are deficient.

How much does a Kieserite Fertilizer Granules container cost?

Regarding the 2025 market rates, bottom grade magnesium sulfate monohydrate is around 1,300-1,800 RMB per ton and controlled release magnesium sulfate at 2,000-2,500 RMB per ton. This price is only specific to the given further parameters like purity, country of origin, and a purchase’s conveniences.

What is Epsom salt fertilizer?

Epsom salt is a seven molecules of magnesium in 1 molecule of sulphur and a molecule of oxygen. Medical-grade Epsom salt is of high purity while ‘Epsom salt fertilizer’ in agriculture is usually known as agricultural-grade magnesium sulphate heptahydrate. We cannot ignore that tho because they are on different rooms and count!

The fertilizer granules for use in agriculture can easily be obtained from nearby agricultural source shops, fertilizer wholesale markets and the agricultural eCommerce sites in the country, such as Indiamart. Direct purchases are possible from the veryino-factories themselves too, for instance, from Laizhou Baiyexin without any intermediary. In case the quantity you require is of considerable bulk then preference will be made for contacting the manufacturers directly for price advantages.

How to check if Kieserite Fertilizer Granules are good quality?

Good quality magnesium sulfate fertilizer is expected to have the following characteristics: homogeneous color without additions, ability to completely dissolve without suspension, proper and easy to read inscription, as well as information about the producer and quality assessment reports. When doubt arises, water solubility check and pH analysis can be helpful secondary criteria.