company tower banner
Certis USA Company Logo
GEMSTAR® LC is a liquid concentrate biological insecticide for control of corn earworm (Cotton Bollworm, Tomato Fruitworm), old world bollworm, and tobacco budworm.

Functions: Insecticide

Insecticide Target Species: Earworms

  • TypeDocument Name
View All Documents

Knowde Enhanced TDS

Identification & Functionality

Agrochemical Functions
Technologies
Active Ingredients
Polyhedral occlusion bodies (OBs) of the nuclear polyhedrosis virus of Helicoverpa zea (corn earworm) 0.64%
Other Ingredients 99.36%
Total 100.00%

 

Applications & Uses

Insecticide Target Species
Agricultural Use Requirement

Use this product only in accordance with its labeling and with the Worker Protection Standard, 40 CFR Part 170. This Standard contains requirements for the protection of agricultural workers on farms, forests, nurseries, and greenhouses, and handlers of agricultural pesticides. It contains requirements for training, decontamination, notification, and emergency assistance. It also contains specific instructions and exceptions pertaining to the statements on this label about personal protective equipment (PPE) and restricted-entry interval (REI). The requirements in this box only apply to uses of this product that are covered by the Worker Protection Standard.

Do not enter or allow worker entry into treated areas during the restricted-entry interval (REI) of 4 hours.

PPE required for early entry to treated areas (that is permitted under the Worker Protection Standard and that involves contact with anything that has been treated such as plants, soil, or water) is:

  • Coveralls
  • Waterproof gloves
  • Shoes plus socks

Properties

Physical Form

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

General Information

Gemstar® LC is a highly-selective insecticidal virus that infects and kills only larvae (caterpillars) of the corn earworm (Helicoverpa zea also known as the tomato fruitworm or cotton bollworm), the old world bollworm (Helicoverpa armigera), and the tobacco budworm (Heliothis virescens). Larvae ingesting the virus stop feeding within several days, become pale and lethargic, and then die as the virus replicates throughout their bodies. Virus released from dead larvae may infect other larvae feeding nearby.

Safety & Health

Precautionary Statements

Hazards To Humans And Domestic Animals

Causes moderate eye irritation. Harmful if absorbed through skin or inhaled. Avoid contact with eyes, clothing, or skin. Avoid breathing spray mist. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco, or using the toilet. Remove and wash contaminated clothing before reuse.

Personal Protective Equipment:

Applicators and other handlers must wear:

  • Waterproof gloves
  • Long-sleeved shirt and long pants
  • Shoes plus socks

Mixer/loaders and applicators must wear a NIOSH-approved particulate respirator with any R or P filter with NIOSH approval number prefix TC-84A; or a NIOSH-approved powered air purifying respirator with an HE filter with NIOSH approval number prefix TC21C. Repeated exposure to high concentrations of microbial proteins can cause allergic sensitization. Follow the manufacturer’s instructions for cleaning and maintaining PPE. If no such instructions for washables, use detergent and hot water. Keep and wash PPE separately from other laundry.

User Safety Recommendations

Users Should:

  • Remove clothing/PPE immediately if pesticide gets inside. Then wash thoroughly and put on clean clothing.
  • Remove PPE immediately after handling this product. Wash the outside of gloves before removing.

As soon as possible, wash thoroughly and change into clean clothing.

Environmental Hazards

Do not apply directly to water, or to areas where surface water is present or to intertidal areas below the mean high water mark. Do not contaminate water when disposing of equipment washwater or rinsate.

Storage & Handling

Storage And Disposal

Do not contaminate water, food, or feed by storage or disposal.

Pesticide Storage: Store this product in the original sealed container in a cool, dry place inaccessible to children and pets. Bioactivity may be impaired by storage above 90°F. Product can be stored at room temperature for up to 60 days, but should be refrigerated for longer storage. Freezing will not harm this product.

Pesticide Disposal: To avoid waste, use all material in this container by application according to label directions. If wastes cannot be avoided, offer remaining product to a waste disposal facility or pesticide disposal program (often such programs are run by state or local governments or by industry).

Container Handling: Nonrefillable container. Do not reuse or refill this container. Triple rinse container (or equivalent) promptly after emptying. Triple rinse as follows: empty the remaining contents into application equipment or a mix tank and drain for 10 seconds after the flow begins to drip. Fill the container ¼ full with water and recap. Shake for 10 seconds. Pour rinsate into application equipment or a mix tank, or store rinsate for later use or disposal. Drain for 10 seconds after the flow begins to drip. Repeat this procedure two more times. Then offer for recycling if available, or puncture and dispose of in a sanitary landfill or by incineration. Do not burn, unless allowed by state and local ordinances. If burned stay out of smoke.