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Soil drench

Gardening  Soil crust  Soil fertility

Soil drench A media treatment to kill fungi.
Soilless mix A substrate for plant roots with manmade materials.
Soil pH The measure of the amount of lime (calcium) contained in soil.


Soil drenches or injections with imidacloprid may provide some control if trees are relatively healthy. Remove adjacent seriously affected trees.

Look for borers and feeding holes on bark and foliage to time sprays ...

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This insecticide is used as a soil drench or a spray and is helpful for control of many insects. It is absorbed by the plant and has a long duration of effect. It's effects on metablolism in insects is not shared with other animals, so toxicity is very low.

2. Apply Imidacloprid as a soil drench near the base of the trunk. Treatment should be made in the fall from late September to early November, for tree trunks larger than 4 inches in diameter at chest height. Smaller trees can be treated in the spring. Treat only once per year.

In greenhouses, fungus gnat larvae can be controlled with a bacterial soil drench of a certain type of Bt (Bacillus thuringiensis), of which some trade names include Gnatrol and Knock-Out Gnats.
Beneficial nematodes (Steinernema sp.) may be released into the soil to control larvae.
Leafminers ...

- Up to five hundred times more effective than soil drenching.
- Nutrients are taken up immediately by plants, so you see quick results.
- Supplies elements, such as iron, when they are not available in the soil.

Fungicides may be applied as a soil drench after planting, incorporated into the soil as a dust before planting, or sprayed in mist form on all seedlings.

One 20-gram packet of Actinovate treats 200 plants. For optimal results, use Actinovate as a soil drench at planting time, and then as a foliar spray every 7 days. The packet label offers details on dilution rates, application tips and other helpful information; be sure to follow these instructions.

Spray the tea on leaves. Foliar applications of compost tea are absorbed more quickly and distributed throughout the plant more efficiently than soil drenchings. Spraying the leaves also helps to lower the incidence of nasty diseases like powdery mildew.

The larval stage is best controlled by treating the soil, using a soil drench. Wet the soil surface thoroughly. Repeat weekly or as needed. Treat plants outdoors, allowing them to air out and dry during the day before bringing them back inside.

They can however cause damage to the root system of the plant as they burrow to build their nest. A soil drenching with insecticidal soap will usually solve the problem. Systemic insecticides are usually effective as are malathion and diazinon.

Foliage applications for adult leaf-notching may need to be repeated at 3 week intervals from July through August. Acephate is also used to treat for root injury due to larval feeding. Foliage and soil drench treatments should be made starting in June to kill adults before egg-laying.

Most serious diseases that affect poinsettias are soil-borne and areprimarily fungi. Species of Rhizoctonia, Pythum and Phytophthora are the mostcommon diseases. The easiest methods for controlling these disease organisms areby sanitation and periodic soil drenches with a recommended fungicide.

Fertilize Wisely. I mix two tablespoons of liquid fish fertilizer with 1 tablespoon of seaweed, 1 tablespoon of Black Strap molasses, and an optional cup of compost tea in 1 gallon of water. I'll use this as a foliar feed and as a soil drench.

If there is an infestation spray it several times with a low toxic systemic insecticide and follow this up with a soil drench of the same product, as well as improving its growing conditions. If the infestation on a pot plant is bad, it may be best to throw it away.

To make, crush or blend several garlic cloves into a quart of water, then simmer over low heat until the garlic is softened and the essential oils are released. Cool and strain, then spray on the seedlings, making sure to get the stems. If using as a soil drench, straining isn't as needed.

"Several systemic insecticides [such as Bayer 2-in-1 Systemic Granules or Ortho Systemic Insect Killer] are applied as soil drenches, so that the roots take up the toxicant and spread it to where the insects are feeding.

See also: See also: What is the meaning of Soil, Plant, Insect, Foliage, Genera?

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