Sulfur and thiochalcine in horticulture (+video)
May 22, 2020 58 Comments
Sulfur and thiochalcoine are the main materials traditionally used by growers to protect horticulture, as well as other crops such as grapevines for disease protection. Sulfur and thiochalcine are applied to our garden vegetables at a preventive level, but also at the appearance of the first symptoms of diseases, and are repeated according to the intensity of the disease. Both sulfur and thiochalcine are ecological plant protection products, approved for use in organic farming, which can be obtained from agricultural stores in small and larger packages. Let’s see in detail in which cases we use sulfur and thiochalcine in the various crops and how we apply them to protect our plants from powdery mildew,
1. In what cases do we use sulfur in horticulture?
Sulfur is a contact fungicide that protects plants from the powdery mildew fungus, while it also has a moderate acaricidal effect against the tetranych which is a great danger to horticultural crops during the summer season when temperatures rise. Sulfur can be applied by dusting on the leaves, as well as around the root of the plant, as due to heat it releases vapors that «wrap» the plant and protect it without it being necessary to come into direct contact with the foliage of the crop. There is also wettable sulfur, which is sulfur that dissolves in water and can be used to spray on plant foliage. Last operation for dusting and spraying with sulfur on leaves for all horticultural crops is 7 days before harvest.
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2. In which cases do we use thiochalcine in horticulture?
Thiochalcine is a mixture of powdered sulfur and metallic copper in a specific ratio. Thiochalcin is applied by dusting to the foliage of vegetable garden plants to control downy mildew and powdery mildew, the two most important fungal diseases of horticulture. We apply theochalkin every fifteen days in our garden, taking care to make two applications as a maximum per growing season. The general application rate for thiochalquin is two to three kilograms per hectare, although the range of the dose is proportional to the intensity of the disease attack. Last operation is 7 days before harvest for tomato crop, eggplant crop, zucchini crop and cucumber crop and 21 days before harvest for melon crop, watermelon crop and potato crop.
How do we deal with powdery mildew on tomatoes and peppers?
3. How do we apply sulfur and thiochalcine to plants?
We apply sulfur and thiochalcine to the foliage of plants using appropriate garden tools that we call sulfurizers or sulfurizers. Of course, for small gardens and beds we can use a simple tulle, a sock or a pantyhose to make dusting easy and economical. We must note that sulfur and thiochalcine are not combined with other preparations that we use to protect our garden vegetables and we apply them alone. Sulfur and thiochalcine are phytotoxic at high temperatures above 28°C and should not be applied to the leaves in hot weather as they may cause burns. Sulfur and thiochalcine do not work effectively at temperatures below 18°C and are maximally effective at temperatures of 20°C-26°C.
How we use sulfur in plants (+video)
4. And a secret about sulfur and thiochalcine
A practical way to use sulfur and thiochalcine on the vine is to mix them in a 1:1 ratio to dust on the foliage of the vine and bed to protect against grape downy mildew and grape downy mildew.
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