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 ...
What Is a Soil Drench?
As the name suggests, a soil drench is chemical in a liquid form that is used to drench or wet the soil under a sick plant or tree.
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.
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.
If that is not possible, try a soil drench - systemic granules that are sprinkled on the soil surface and watered in. If necessary, spray the plant with insecticidal soap or a recommended topical spray covering the top and undersides of the leaves.
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.
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.
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.
Call your local extension agent for advice on chemicals approved for direct application or soil drenches. If stung, wash the area with warm soapy water and apply antiseptic. Get medical help immediately for allergic reactions.
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 ...
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.
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.
"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: Soil, Water, May, Plant, Insect