Application Recommendation and Literature

Kelp/Seaweed Extract Powder Recommended Foliar Application.

Here is the test report and approval of chitosan by US EPA for use in agriculture & horticulture.

Field tests report.

The Royal Horticultural Society opinion on seaweed as organic fertilizer.

Nutrient Functions and Deficiency Symptoms.

Biopesticide Registration Action Document of Laminarin from seaweed by US EPA.

Recommended Foliar Application (Download a copy)

Apply 1-1.5Kg/ha or 300-500g/Acre.
Vegetables	Timing	General Application
Eggplants, Pepper, Melon, and Squash.	Spray at six-leaf stage → Early bloom → First fruit set → Four weeks later (optional).
Bean and Peas	Six-leaf stage → First bloom → First pods.	Every 2 weeks and after each picking.
Cabbage, Broccoli, and Cauliflower	Six true leaf stage → 3 weeks later → Head initiation.
Cucurbits and Cucumbers	Six-leaf stage → Just prior to bloom → early fruiting.	Every 3-4 weeks and after each picking.
Onions, Carrots, Chicory, Leeks, & Turnips	2 to3 weeks after emergence/5-leaf stage → Root enlargement.	Every 2-3 weeks.
Potatoes	Six-leaf stage → When tuber approx. pea size → Beginning of bloom → Bulking up.
Tomato	Six-leaf stage → pre-bloom → At fruit set → 2-3 weeks later.	Every 2-3 weeks and after each picking.

Apply 1-1.5Kg/ha or 300-500g/Acre
Fruits	Timing	General Application
Grapes	20~30cm cane → 45~60cm cane → Full blooming → repeat every 2-3 weeks.
Apples/Pears	Green tip → Pre-bloom → pink bud → Full blooming → Early fruit formation.	Every 3 weeks.
Citrus	Early bloom → Petal fall.	Every 3 weeks.
Bananas	Plant emergence → 5-10 days later → Fruit at half size.	Every 3weeks.
Strawberry & other berries	Right after transplant → Before bloom.	Every 3 weeks and after each picking.
Plums & Cherries	At budding → Full bloom → Early Fruit Formation.	Every 3 weeks.

Flowers and Grass
Plant	Dilution	Timing
Roses	1:3000	Every month and after each pruning or cutting.
Roses	1:1000	At the beginning of the growing season. Soak the soil with 200-300ml 3 times per week; subsequently, once a month
Lupins	1:3000	Spray once after 3-6 weeks of emergence.
Other flowering and Ornamental plants	1:1000	After transplanting, soak the soil around the seedling with ∼ 100ml.
Other flowering and Ornamental plants	1:5000	Spray every 2 weeks.
Turf and Golf Courses (600-800g/ha)	1:5000	Once or twice per month. More effective to apply often at a lower concentration.
Fairways (300-400g/ha)
Pasture (1Kg/ha)		Spray during early growth after emergence, grazing or cutting.
Hay/Meadow (1-1.5Kg/ha)		Spray 2 weeks after emergence or when the hay is ∼ 6-8” tall; repeat 2 to 3 times with 3-4 week intervals.

Fungi	Dilution	Timing
Mushroom	1:3000	size of mushroom head is 1-1.5 cm →size of mushroom head is 3 cm

Compost enrichment and degradation
The degradation rate and quality of compost can be improved by addition of diluted kelp extract. For example, add 500g to 2 Kg of kelp powder to make 100L of compost. To make sure even distribution of kelp extract on the compost. One should dilute the kelp powder with water at 200-300 times, and then sprinkle the liquid to the compost.