Green Earth Ag & Turf Organic Product Catalog
Quantum Growth Probiotics Information

Beneficial Nematodes
Natural Grub and Soil-Dwelling Insect Control

Nematodes are found every where in nature. They are ground dwelling microscopic round worms. Many types of nematodes occur in nature; most are beneficial. Typically, the naturally occurring beneficial nematodes in soil are at populations that are too low to effectively control pests. These numbers can be increased by treating affected areas with beneficial nematodes. The nematode species available through Green Earth Ag and Turf actively search out, infect and kill insect larvae and beetle grubs, providing you with an all-natural and effective form of pest control. Unlike many of the chemical agents used to control pests, beneficial nematodes are safe for people, plants, pets, animals and the environment.

Beneficial nematodes are effective against a wide host of pest insects and are safer for people, plants, animals and the environment than chemical alternatives. Pests will not develop resistance to these natural predators.

How Beneficial Nematodes Work (Mode of Action)

The insect-parasitic nematode Heterorhabditis bacteriophora biologically controls soil-dwelling and boring larvae (caterpillars) of many species of beetles and flies. The nematode actively searches for insect larva and enters the larva through a natural body opening, sometimes directly through the skin. The nematode excretes specific bacteria from its digestive tract before it starts to feed. The bacteria multiply very rapidly and convert the host tissue into products that can easily be taken up by the nematodes. The larva dies within a few days and the color changes to orange-red or red-brown. The nematodes multiply and develop within the dead insect. As soon as the nematodes are in the infectious third stage, they leave the old host and start searching for new larvae. When there is no new host present, the nematode population will slowly decrease.

Labeled for the Following Insect Pests:

White Grubs:
• Japanese Beetle (Popillia japonica)
• Northern Masked Chafer (Cyclocephala borealis)
• Southern Masked Chafer (Cyclocephala lurida)
• May/June Beetles (Phyllophaga spp.)

• Black Cutworm (Agrotis ipsilon)
• Bronzed Cutworm (Nephelodes minians)
• Variegated Cutworm (Peridroma saucia)

Also listed for Leatherjackets & European Crane Fly (Tipula oleracea and Tipula paludosa).

General Treatment

Packages contains either 50 million or 500 million nematodes.  The general application rate is 25 million per 1,000 square feet (1 billion per acre) under low to moderate infestation. Double that rate should be used for higher infestations (50 million nematodes per 1,000 square feet or 2 billion per acre). The nematodes should be applied as soon as insect larvae and/or damage is expected or observed. For optimal results, apply to moist soil with temperatures above 50 degrees Fahrenheit. Nematodes are susceptible to UV light, apply on cloudy days or late in the afternoon or evening. Nematodes can be stored in the refrigerator until the expiration date on the package. Do not freeze.

Available Sizes

• 50 Million Nematodes (Covers 2,000 Square Feet)
• 500 million Nematodes (Covers 20,000 Square Feet or About 1/2 Acre)