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TetraSan™5 WDG has received federal registration and is in
the process of obtaining state registrations. The past few years
have seen the introduction of several new and effective miticides
including: Akari, Floramite, Pylon, and Ovation. Many growers
still report good success with older products such as Avid,
Hexygon, and Sanmite. Given this array of miticides, you might
ask, “Why make room for one more?”Do you really need another miticide? Mites have proven they have the ability to develop resistance to miticides over the years. As a result you will see resistance management labeling that puts significant restrictions on how often a miticide can be applied. Examples of what you will find on miticide labels include: “use only once per each crop cycle”, “use at least two different chemicals from different chemical families (with different modes of action) between treatments”, etc. The TetraSan label says that it can be used a maximum of two times per crop or two times per six months with at least one treatment with another mode of action in between. Growers are going to need more than one or two miticides to run a successful mite control program, particularly if they produce crops that are susceptible to mites. 
Features and Benefits of TetraSanTetraSan has some unique characteristics that might earn it a place in your mite control program. It is reported to have strong translaminar action, meaning that when sprayed on the top surface of the leaf it will move to lower leaf surfaces in sufficient quantities to control mites. This is an obvious advantage where crop canopies make good under leaf coverage difficult. TetraSan also has an impact on all life stages of mites. It inhibits the molting process on egg and nymph stages, and treated adults won’t lay viable eggs. TetraSan does work like an insect growth regulator (IGR) in that it takes several days to reduce the number of adults. You can expect long residual control (estimated at up to 4-6 weeks by Valent) of the mites that appear on the label. Greenhouse, lath, and shade house applications to ornamental flowers, foliage, ground covers and shrubs are on the label. Research is continuing but early trials studying the safety of TetraSan treatments and beneficial insects and mites are encouraging. TetraSan has a “Caution” signal word and a 12 hr REI. Tips for Achieving Good Results TetraSan will be most effective when it is applied while mite populations are still low. If mite numbers are already high consider tank mixing TetraSan with an adulticide. Test all tank mixes for compatibility and plant safety before treating large numbers of plants. Trials have shown excellent plant safety and no visible residue but there is a label caution against using TetraSan on poinsettia bracts. A second application can be made as soon as 14 days after the initial treatment if mite pressure is high. TetraSan is packaged in twoounce water-soluble packets. One packet treats 12.5 to 25 gallons of water applied as a foliar spray. 
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