Controlling Whiteflies



Whiteflies are tiny, sap-sucking insects that belong to the same group of insects as aphids and scales. They may become abundant in vegetable and ornamental plantings, especially during warm weather. Whiteflies not only causes damage by feeding, but may also transmit plant viruses. That is why it is key to control whiteflies as quickly as possible.

Whiteflies pierce the leaf tissue and insert a feeding stylet, then suck out the liquid, depriving plants of nutritional value. Large populations can cause leaves to turn yellow, appear dry, or fall off plants. Like aphids, whiteflies excrete a sugary liquid called honeydew, so leaves may be sticky or covered with black sooty mold that grows on honeydew.

Whiteflies lay their tiny oblong eggs on the undersides of leaves. Within two weeks, the eggs hatch and a nymph emerges. These lightly colored nymphs are flat and circular to oval in shape. A whitefly remains a nymph for a couple of days to a couple of weeks depending on environmental conditions. After that it will pupate and become an adult. Most species are white in color, but some species can be pink to tan in color, and can grow up to 1/16” in length.


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Altus® — Systemic, Broad-Spectrum Whitefly Control



Altus is a systemic, broad-spectrum insecticide that can be used on a wide range of plants anytime during the production cycle for targeted control of whiteflies, aphids and other harmful sucking pests. With Altus, growers can utilize long-lasting drench applications for more difficult crops (such as poinsettias) and containers (such as hanging baskets).

Altus contains a new active ingredient for the ornamentals market. Flupyradifurone is a new butenolide chemistry and is a great fit for integrated pest management programs. With an excellent non-target safety profile, Altus offers flexible and long-lasting performance and is compatible with honey bees, bumble bees and many beneficial insects in all production ornamental settings.


Altus Formula Banner

Active Ingredient: Flupyradifurone 17.09%
IRAC Group: 4D
EPA Registration Number: 432-1575
Signal Word: Caution
Formulation: Soluble Liquid
REI: 4 hours (12 hours in CA)


Flexible, Long-Lasting Performance
  • No application timing restrictions. Labeled for use before, during and after plant bloom
  • Excellent residual control – up to 4-6 weeks
  • Four-hour, re-entry interval (REI) minimizes business disruption (12-hour REI in CA.)
  • Rapid and strong feeding cessation effect
  • Rotational chemistry reduces risk of resistance
  • One product treats all greenhouse crops, including vegetable transplants
  • Classified as a reduced risk product by the EPA

Best Uses
  • New foundational chemistry for managing whiteflies and aphids in ornamental crops
  • Any stage of crop development, including before, during or after plant bloom
  • Can be used in conjunction with IPM programs, including many beneficials
  • Greenhouses and nurseries on ornamental plants, vegetable transplants and indoor vegetable production

Attributes
  • Compatible with many beneficials, including honey bees and bumble bees
  • New, unique insecticide from butenolide class of chemistry
  • Systemic and translaminar protection of existing and new plant growth
  • Control of many sucking pests including whiteflies, aphids, leafhoppers, mealybugs, psyllids and hard and soft scales

How it Works
  • Flupyradifurone is taken up into leaves and stems after spray application and via roots if applied to soil or alternative substrates
  • After uptake into the plant, Altus is translocated acropetally in the xylem, in direction of the transpiration stream and is translaminarily distributed into adjacent plant cells

Application Rates
For foliar applications, apply 7 - 14 fl. oz. / 100 gal. of water
For drench applications apply 21 - 28 fl. oz. / acre





Whitefly Control in Poinsettia — Drench Application



Whitefly Control in Poinsettias Altus Drench Application Graph




Altus Drench Application for Whitefly Control in Containerized Poinsettias



Poinsettias ‘Primera Red’ were grown in 10” diameter pots with a soilless bedding mix consisting of 73% blonde peat, 15% black peat and 12% coconut fiber in a greenhouse under 30% shade. Ambient temperature at application was 92˚ F with 55% relative humidity. Treatments included two rates of Altus and an untreated control. Drench rates of 3.2 and 4.8 ounces of Altus per 100 gallons were used. Drench volume was based on 10% of the container volume or 12.8 ounces of drench solution per 1 gallon of soil volume. Experimental units consisted of 3 replications with 10 subsamples per treatment in a randomized complete block design (RCBD). The trial was conducted under a high natural infestation of silverleaf whiteflies, Bemisia tabaci, where the number of adults and nymphs per plant were monitored for 42 days following the treatment application. Whitefly populations were significantly lower for poinsettias drenched with both rates of Altus.


Altus Drench Whitefly Control Graph
Whiteflies on Poinsettias
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