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.
|Apply 1-1.5Kg/ha or 300-500g/Acre|
|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.|
|Roses||1:3000||Every month and after each pruning or cutting.|
|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.|
|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.|
|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.|
|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.