What is the chemical composition?

It is a bright yellow clear liquid composed of seaweed active ingredients and Potassium Phosphite, containing 1% Seaweed Polysaccharide, 30% P2O3, and 20% K2O.

What should I do if crystals appear?

If any crystal appears due to high concentration, simply add water to dissolve it; the product effect will not be affected.

What certifications does this product have?

The product is certified with ISO9001, ISO, and CE standards.

Algae Phosphite K Fertilizer Fungicide Bactericide

Name: Algae Phosphite K Fertilizer Fungicide Bactericide
Brand: Qingdao Seawin Biotech Group Co., Ltd.
SKU: 773816822

Shandong, ChinaQingdao Seawin Biotech Group Co., Ltd.

US$1.00-3.00

2,000 L

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Condition

New

Certification

ISO9001, ISO, CE

Model NO.

Alga Phosphite K

Application

Vegetables, Flowers, Fruit

State

Liquid

Validity

Long-term

Physics State

Liquid

Infection On Soil

Physiological Acid

Chemical Character

Chemical Acid

Raw Material

Seaweed Extract

Ha

120

Transport Package

5L, 10L, 20L

Trademark

SEAWINNER

Origin

Qingdao

Production Capacity

10000L/Year

Key features

Broad Disease Resistance: Enhances resistance to Downy Mildew, Powdery Mildew, Phytophthora, Root Rot, and Canker effectively.

High Nutrient Efficiency: Contains 30% P2O3 and 20% K2O; not easily fixed in soil, activating secondary and trace elements.

Versatile Application Methods: Suitable for foliar spray, flood irrigation, or drip irrigation with specific dilution ratios for different crops.

Improved Fruit Quality: Promotes flower bud differentiation, fruit color change, and increases overall yield and quality.

Safe for Young Growth: Safe for use on spring shoots and young fruits; promotes new shoot maturation without damage.

High Concentration Formula: Bright yellow clear liquid with obvious seaweed odor; crystals can be dissolved with water without affecting efficacy.

Good Chemical Compatibility: Compatible with copper preparations without precipitation or damage, enhancing control against severe Canker.

Company profile

Qingdao Seawin Biotech Group Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2004-06-01 CertifiedNearest Port: Qingdao PortAverage Response Time: ≤18h CertifiedTerms of Payment: LC, T/T, Western Union

AI-Powered supplier vetting

SummaryQingdao Seawin Biotech Group Co., Ltd. is a China-based limited company founded in 2000, with 556 employees and operations in Shandong. It is identified as a manufacturer and processor focused on seaweed fertilizers, organic fertilizers, NPK fertilizers, fertilizer equipment, and related products. The supplier reports more than 10 production lines, a 260,000 m² manufacturing plant, annual seaweed extract and finished-product output of 600,000 tons, and export markets in South America, Europe, and North America. Its agronomist team provides fertilizer solutions and crop-protection advice, while reported certifications include ISO 9001, ISO 14001, ISO 45001, and ECOCERT organic-input certification. The available data supports strong production capability, certification coverage, and technical support. However, evidence is insufficient to confirm customization capability, financial credibility, or established customer cases; the trade records provided show only one transaction per listed buyer.

Supplier typeThe supplier is a limited company founded in 2000 and is explicitly described as a professional manufacturer focused on the exploitation, development, production, and marketing of marine biological products. Its product keywords and manufacturing descriptions identify it as a producer of seaweed fertilizer, organic fertilizer, NPK fertilizer, and fertilizer equipment rather than solely a trading company.

CertificationsThe supplier reports ISO9001:2015, ISO14001:2015, and ISO45001:2016 management-system certificates. Its SEAWINNER organic fertilizers are also stated to be certified by ECOCERT as organic agricultural inputs under both EU and NOP standards, providing explicit evidence of multiple quality, environmental, occupational-safety, and product certifications.

R&D capabilityThe supplier reports 41 years of total R&D-engineer experience and describes development and industrial utilization of marine biological resources. Its agronomist team provides professional fertilizer solutions and crop-protection advice, indicating technical development capability, although the slices do not provide specific R&D projects, patents, laboratories, or newly developed products.

Production capacityProduction capability is strongly supported by 556 employees, more than 10 production lines, a reported 260,000 m² manufacturing plant, two Shandong production bases, and stated annual output of 600,000 tons of seaweed extract and finished products. The supplier also reports lead times of within 15 workdays in off-peak periods and one month during peak periods, further indicating organized manufacturing capacity.

Product Q&A

Q:What are the main benefits of this fertilizer?

It promotes rapid absorption of P and K, regulates growth, enhances resistance to diseases like mildew and root rot, and improves fruit quality and yield.

Q:How should this product be applied?

It can be used for foliar spray (diluted 800-1200 times), flood/drip irrigation (30-75L/Ha), or specific dilutions for disease prevention and growth regulation.

Q:Is it safe for young fruits and spring shoots?

Yes, it is safe to use on spring shoots and young fruits without causing damage, while promoting the maturation of new shoots.

Q:Can it be mixed with copper preparations?

Yes, it has good compatibility and can be used together with copper preparations without precipitation or damage, especially for severe Canker.

Q:What diseases does it help prevent?

It enhances resistance to Downy Mildew, Powdery Mildew, Venturia Inaequalis, Phytophthora, Root Rot, and effectively prevents Canker.