Brown Algae OligosaccharidesModel: DFBio-bsw

Wholesale Seaweed Extract Powder 50% Polyphenol Fertilizer

Seaweed extract powder is a water-soluble biostimulant fertilizer made for commercial crop nutrition and stress support. This 50% seaweed polyphenol organic fertilizer is supplied for foliar spray and drip irrigation, with 100% solubility, pH 7-9, OEM packaging, and ISO 9001 manufacturing support for B2B importers, distributors, and agricultural input brands.

Supply TypeMOQ: 5000 kilograms
ServiceOEM / Customization
DocumentationCOA & MSDS
  • 50% seaweed polyphenol biostimulant for crop vigor, root development, and stress resilience
  • 100% water-soluble powder suitable for foliar spray, drip irrigation, and broad agricultural use
  • Controlled-release compound fertilizer format with customized purity and packaging options
  • Manufactured in Shandong, China under ISO 9001 standards with sample and OEM availability
PRODUCT DATA

Technical Specifications

PH
7-9
OEM
Available
Type
NPK
State
Powder
Usage
AGRICULTURAL USAGE
Purity
Customized
Sample
Avaliable
CAS No.
null
Package
Customized
Appearance
powder
Applied to
Crops Etc.)
Brand Name
Duofen
EINECS No.
null
Application
Foliar Spray, Drip Irrigation, Flight defense
Certificate
ISO 9001
Release Type
Controlled
Selling Units
Single item
Classification
Compound Fertilizer
Place of Origin
Shandong, China
Water Solubility
100% Soluble
TECHNICAL INFORMATION

Product Insights & Application

Products Description
Composition
Appearance
Seaweed powder Fertilizer
AlgInIc Acid(w/w)
25%Min
Organic Matter(w/w)
10%Min
N+P+K(w/w)
20%Min
PH(1:250)
7-9
Experimental Results
DOSE
Foliar Spray
Grain: 800–1000× (early), 1000–1500× (late)
Veg: 600–800× (early), 800–1200× (late)
Soaking
0.05–0.1% solution
Seed mixing
1:50–1:100 (product:seed)
Company Profile
Our Advantages
Exhibition
Packaging and Delivery
FAQ

Shandong Dofen Agricultural Co., Ltd. – FAQ

1. What is liquid fertilizer? Liquid fertilizer is a nutrient-rich solution that provides essential nutrients like nitrogen, phosphorus, and potassium to plants in a readily absorbable form.​ 2. How do I apply liquid fertilizer? Liquid fertilizers can be applied through drip irrigation systems, or foliar spraying. Always follow the recommended dilution rates and application methods provided on the product label.​ 3. When is the best time to apply liquid fertilizer? Apply liquid fertilizer during the growing season, typically from spring to early fall. Avoid fertilizing during dormant periods to prevent potential damage to plants. ​ 4. How often should I fertilize my plants? Fertilization frequency depends on the plant type and growth stage. Always adjust based on specific plant needs and soil conditions.​ 5. Can I use liquid fertilizer on all plants? Liquid fertilizer is suitable for most plants, including vegetables, fruits, and ornamental plants. However, always check the product label for any plant-specific recommendations or restrictions.​ 6. How should I store liquid fertilizer? Store liquid fertilizer in a cool, dry place away from direct sunlight and extreme temperatures. Ensure the container is tightly sealed to prevent contamination and degradation.​ 7. Is liquid fertilizer safe for the environment? When used as directed, liquid fertilizers are safe for the environment. Avoid over-application to prevent nutrient runoff, which can harm water sources.​ 8. Do you offer organic liquid fertilizers? Yes, Shandong Dofen Agricultural Co., Ltd. offers a range of liquid fertilizers formulated to promote healthy plant growth while being environmentally friendly.​ 9. How can I contact customer support? For inquiries or support, please contact us.