Poinsettia production is just around the corner. From propagation through finish, it is important to watch for common insect pests, particularly whiteflies, as they can build up quickly.
Systemic Protection Provides Optimal Control
Systemic insecticides from IRAC Group 4 have long been a standard for providing control of whiteflies in ornamentals. Recent bans on these products, as well as ongoing resistance concerns, have many growers looking for alternative solutions. Today we have a unique option for systemic control with Mainspring® GNL, a broad-spectrum insecticide from a unique class of chemistry known as diamides in IRAC Group 28.
Mainspring GNL functions like a shield, protecting crops from a range of chewing and sucking pests. It is especially effective for controlling thrips and whiteflies (Bemisia tabaci), including Biotypes B and Q. As a drench, it moves upward through the plant and stops insects from feeding, limiting injury and providing extended protection for up to 10 weeks.
For long residual protection in poinsettia crops, apply Mainspring GNL as a drench 2-3 weeks after the crop is pinched and before pest populations build. At this point, the crop is well-rooted after transplanting, which allows for optimal uptake.
Mainspring GNL can also be applied as a foliar spray on a 14-day interval when spray coverage is not a limiting factor. Its four-hour restricted-entry interval (REI) allows applications to be made without disrupting production schedules.
Poinsettia Agronomic Program
Syngenta has developed an agronomic program for poinsettia production that provides proven recommendations to prevent pests and diseases that can impact the quality of your crop. It proposes control options based on their strengths, modes of action and length of control when they will be the most beneficial. Since pressure can vary by region, the program is meant to be a guide, offering a built-in resistance management strategy that will reduce problems, eliminate the need for corrective actions and ensure the production of a high quality crop.
The following excerpt from the poinsettia agronomic program provides recommendations for the first seven weeks of production.
Download the full program at www.GreenCastOnline.com/Solutions.
 Where bacterial leaf spot is a concern, tank-mix Daconil Ultrex with a Mancozeb product.
 When Mainspring GNL is applied as a drench, it will provide control of chewing and sucking insect pests for 10 weeks.
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