Commercial Entomopathogenic Nematodes

Beneficial Nematodes for the Commercial Grower

Entomopathogenic nematodes are microscopic, naturally occurring worms that can be used for effective and environmentally friendly pest control. These nematodes are beneficial to plants and gardens because they hunt down and kill insect pests that can harm crops.

When introduced to the soil, entomopathogenic nematodes actively seek out insects like grubs, soil-based caterpillars, and beetle larvae. They penetrate these pests’ bodies and release bacteria that weaken and kill the insects. The nematodes then feed on the insect’s remains and reproduce, continuing the cycle of pest control.

Using entomopathogenic nematodes as a biopesticide is a sustainable alternative to chemical pesticides, as it targets specific pests without harming beneficial insects or the environment. They can be applied to the soil using sprayers or irrigation systems, making them a valuable tool for integrated pest management in agriculture and gardening.

Our Species

Steinernema feltiae (Sentry) is a species of entomopathogenic nematode known for its effectiveness in controlling insect pests such as; fungus gnats, shore flies, and thrips larvae. S. feltiae targets pests in the fly family (order Diptera).

Steinernema carpocapsae (Citadel) primarily targets a wide range of soil-dwelling insect pests, including beetle larvae (grubs), soil-based caterpillars, termites and fly larvae.

Heterorhabditis bacteriophora (Patrol) primarily targets soil-dwelling insect pests, including beetle larvae, caterpillars, and fly larvae. They have a broad host range. H. bacteriophora targets pests in the beetle family (order Coleoptera).

Our Rearing: In Vivo

In vivo rearing of nematodes refers to the process of cultivating and raising these tiny organisms inside a living host. This host could be another insect or organism that the nematodes naturally infect and feeds on. The nematodes complete their life cycle within this host, reproducing and developing until they are ready to be released into the environment for pest control.

In simpler terms, in vivo rearing means taking care of nematodes while they grow and multiply inside another living creature. This method is used to ensure a strong, viable bio-control that is already attuned to their natural hosts (pests).  Not all Nematodes are harvested from this production method, as not all are released from their host cadaver.   This means that the Nematodes that are harvested are the strongest and best available!   It is simply survival of the fittest.

Application Equipment:

To achieve effective distribution of beneficial nematodes, it’s essential to use the appropriate equipment.

1. Hose End Sprayer: Use a hose end sprayer, adjusting the setting to allow for maximum water flow. Depending on the type of sprayer, if it mixes water into the container, consider adding coloring to the solution (a tea bag or food dye). This coloring aids in determining when the nematode concentrate has been thoroughly dispersed.
2. Backpack Sprayer: When using a backpack sprayer, periodically tip the container to ensure the nematodes remain suspended in the solution. This helps maintain an even distribution during application.
3. Tanker Truck with Agitator: For larger-scale applications, a tanker truck with an agitator in the tank is suitable. Nematodes are heavier than water and tend to settle at the bottom, so consistent agitation is necessary to keep them well-mixed.
   1. Pressure Consideration: Nematodes can handle pressures up to 300 psi. However, it’s important to strike a balance between pressure and droplet size to prevent damage to the nematodes.
   2. Screening and Nozzle Selection: The tank screening should have a mesh of at least 50 squares per inch, whether made of metal or plastic. Remove any finer metal screens, as they can harm the nematodes during application. Opt for a shower head nozzle, which produces larger droplets that can effectively penetrate deeper thatch layers.

Application Sizes and Formats:

When it comes to applying nematodes, it’s essential to consider the quantities and storage to ensure their efficacy.

• Nematodes Quantity: Nematodes are available in quantities of 10, 25, 35, 50 million. These quantities consist of live, infective stage juveniles, which are the active agents in pest control.
• Sponge Format: Nematodes are packaged on a sponge.
• Storage Duration: Proper storage is important for maintaining nematode viability. When stored in a refrigerated environment, nematodes can be stored for up to 3 months.

If you have any other questions or concerns about your pest and if beneficial nematodes are the answer … Ask Stacey.