Application Rates
Soil sterilisation: Diluted with clean water at the ratio of 1: 50-100, sprayed to the soil.
Reducing insect infestation: Diluted with clean water at the ratio of 1: 300-500, foliar spray or root irrigation.
Seedlings: Diluted with clean water at the ratio of 1: 800-1000, foliar spray or root irrigation (first applied at 2ndleaf stage) at intervals of 15 days
Growing and mature plants: Diluted with clean water at the ratio of 1: 500-700, foliar spray or root irrigation at intervals of 15 days
Enriching the soil: Dilute wood vinegar with water ( 1:200 ration-1 part wood vinegar and 200 part water) and sprinkle it to the soil before planting. Application is one liter solution for every square meter of planting area.
Applying to compost: Dilute one part wood vinegar with 50 parts water and sprinkle to composting materials. Application rate is 50 liters solution to one compost.
Fertilisation: Dilute one part wood vinegar with 200 parts water and spray it to leaves once a month. Dilution ratio can be change to 300 parts water for the succeeding applications.
Seed germination: Dilute one part wood vinegar with 200 parts water then soak the seeds for 24 hours.
Pest repellent or deodoriser: Dilute one part vinegar with 20 parts water and spray it it the plant or to the substrate in case of odor removal.
The Appropriate Technology Association of Thailand recommends the following wood vinegar/water solution rates for various farm uses (ATA, p. 27-28). Note that, in some cases, no details were given regarding the specific identity of pests.
Repel nematodes: Tomatoes, 1:500 (apply to the base of plants); strawberries, 1:200 (apply to the base of plants); and black pepper vines, 1:1500 (apply in place of water).
Repel insect pests: Cabbage and Chinese cabbage, 1:1500 (apply in place of water); corn 1:300 (spray onto leaves).
Control of fungal diseases: Tomato and cucumber, 1:200 (spray onto leaves).
Control of root rot: Tomato and cucumber, 1:200 (apply to the base of plants).
Reduce incidence of chili pepper flowers aborting: 1:300 (spray onto leaves).
Improve flavor of sweet fruits and stimulate development of crops: Mix solution rates of 1:500 to 1:1000. Wood vinegar prevents excessive nitrogen levels, improves plant metabolism and contributes to higher fruit sugar levels.
Stimulate compost production: A solution rate of 1:100 will help increase the biological activity of various beneficial microbes and can decrease composting times.
Combat bad odour: A wood vinegar solution of 1:50 will diminish the production of odor-causing ammonia in animal pens.
Supplement for livestock feed: Mixed with livestock feed at rates of between 1:200 and 1:300, wood vinegar can adjust bacterial levels in the animal digestive tract which improve the absorption of nutrients from feed.
Enrich garden soil: Use a strong solution of 1:30 to apply to the garden soil surface at a rate of 6 liters of solution per 1m to enrich the soil prior to planting crops.
To control soil-based plant pathogens: Use an even stronger rate of 1:5 to 1:10.
Repel houseflies: Dilute wood vinegar at a rate of 1:100 and apply to affected areas.
Notes:
Must not be used with alkaline pesticides and must not be used during crops flowering stage.
If it rains within 12 hours after application the application may need to be repeated once the plants have dried off.