Soil Health Solutions | AgriSea Seaweed Biostimulants

Healthy soil is essential for pasture, crop and animal growth. This page brings together practical guidance, research insights, and supporting resources to help you build and maintain soil health with confidence using AgriSea's proven seaweed-based solutions.

AgriSea's soil products harness the natural power of New Zealand Ecklonia Radiata seaweed to feed and activate soil biology. Rich in minerals, trace elements and bioactive compounds, they support beneficial microbes and earthworms, improve nutrient cycling, and strengthen soil structure. By working with natural soil processes, they enhance root and shoot growth, improve nutrient efficiency, and build aeration and drainage for more fertile, balanced soils.

The result is healthier, more resilient pastures and crops that recover faster from weather extremes, tolerate traffic and compaction more effectively, and are less affected by pest and disease pressure. Customers report longer roots, increased earthworm activity, reduced pulling and pugging, improved clover content (for natural nitrogen stability), stronger germination, and better returns on fertiliser and soil investments.

AgriSea products are safe, non-toxic, and suitable for all soil types including pastoral land, arable cropping systems, and horticultural applications. They work naturally with soil biology to build long-term soil health and resilience.

Key Benefits

Increase pasture root depth from 10cm to 40cm

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Save $100,000 per annum on fertiliser across a 250ha farm

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150% more earthworms in treated soil compared to untreated

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Reduce nitrogen fertiliser by 50%+ while maintaining milk production

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39% more new cane growth in kiwifruit vines compared to untreated

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Increases nutrient availability, helping pastures and crops to reach full growth potential

Strengthen soil structure and improve drainage and aeration

Support sustainable practices, promoting long-term resilience and productivity

Application Rates

Follow these recommended application rates to optimise soil health and productivity

Soil Nutrition

5L per hectare

Application Method

Dilution Ratio
(AgriSea : Water)

Example Mix

Ground-Based

(Tractor, Boom, Rose, Jet)

1:30 (minimum)
up to 1:50 (optimal)

1:30 Ratio

5L Soil Nutrition
150L Water

Aerial

(Helicopter, Plane)

1:2 (common)
up to 1:3 (optimal)

1:3 Ratio

5L Soil Nutrition
15L Water

Quad Bike

(e.g., 60L C-Dax tank)

1:6

1:6 Ratio

5L Soil Nutrition
30L Water

Soil+

20kg/ha

Note: Optimum conditions for all methods: Early morning or late afternoon/evening (avoid strong direct sunlight), air temperature above 10°C, and soil temperature above 6°C.

Application Timing

Strategic timing of applications maximizes the benefits of soil nutrition products throughout the year.

Purpose

Timing

Autumn Rebound

Early Autumn

Winter Preparation

Late Autumn / Early Winter

Spring Jump-Start

Early Spring

Summer Resilience

Late Spring

Nutrient Enhancer

Mix and apply with solid fertiliser. Consult your AgriSea Area Field Consultant re: mixing compatibility.

Sowing / Re-grassing

In-furrow application with seed

Pre-Drilling

Apply pre-drilling with base fertiliser mix

Note: Observe soil and plant response, adjusting application rates or timing as required. Contact an AgriSea Area Field Consultant for tailored advice to optimise your results.

Case Studies & Research

Explore on-farm case studies, independent trials and peer-reviewed research insights demonstrating how AgriSea can support soil health

CASE STUDIES

Finding the sweet spot: how Chris Parry grew production with fewer cows

Most farmers add cows to increase production. Chris Parry did the opposite, and it worked. He cut cow numbers from 285 to 228 and still lifted production from 71,000 to over 100,000 kilograms of milksolids. It wasn't about chasing more inputs or pushing the farm harder. For Chris, the real shift began when he started paying attention to what was happening beneath the surface — in the soil.

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Case Studies

Wilith Farm: From Struggle to Regenerative Success

After 3-4 years of struggling with conventional farming methods, Miah and Jenny Smith transformed their Atiamuri dairy farm. Learning from Australian soil scientist Dr. Christine Jones, they cut synthetic inputs and built soil biology. Eleven seasons later, they hosted Dr. Jones and 100 farmers to showcase their thriving operation.

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CASE STUDIES

18.5% Faster Lamb Growth on AgriSea Treated Pasture

A Lincoln University trial - now published in the peer-reviewed journal Agriculture - confirms that AgriSea Soil, Pasture & Ocean Nutrition applied to ryegrass-clover pasture delivers heavier lambs, healthier ewes, and less metabolic stress. One application from lambing to weaning.

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Soil Health Articles

Discover real farm stories, research insights, and practical guidance on building healthier, more resilient soils

Technical

Basic vs AgriSea Soil Testing

Traditional soil tests measure only basic NPK and pH, missing the crucial biological factors that determine soil health. AgriSea soil testing evaluates microbial activity, organic matter quality, and nutrient cycling capacity – the factors that truly drive pasture performance and farm profitability.