This combination product contains fluopyram and trifloxystrobin incorporated with Stressgard. Exteris Stressgard is formulated with a lower concentration of fluopyram than Indemnify, and will be labeled for control of anthracnose (suppression only), brown patch diseases, dollar spot, leaf spot, pink snow mold, Microdochium patch, pink patch/red thread, and rust (12).Although Prostar, Emerald, and Kabuto are important tools for controlling specific diseases, when used alone they do not offer the broad spectrum advantages of some other SDHI products in the pyrazole-carboxamide chemical group, such as fluxapyroxad (Xzemplar) and penthiopyrad (Velista).Emerald (boscalid) was introduced in 2003 by BASF Corp. for control of dollar spot and bentgrass dead spot in turf. To increase the spectrum of diseases controlled, flutolanil is mixed with thiophanate-methyl and marketed as the prepackaged mix SysStar WDG (Regal Chemical Co.), which is labeled for control of the diseases listed in Table 1 for Prostar, as well as dollar spot, anthracnose, copper spot, gray leaf spot, and pink snow mold.Xzemplar was recently introduced to the turf market by BASF. Thanks to dual-stacked formulation enhancements including Stressgard® Formulation Technology, this product delivers increased plant health benefits along with improved turf quality.
Dollar spot is the #1 turfgrass disease in the U.S. with respect to amount of fungicide used.Velista has shown very good efficacy against anthracnose in Penn State field trials.Even though exceptions to cross resistance have been reported for some pathogens in certain cropping systems with selected SDHI fungicides, it is prudent to rotate use of different SDHI fungicides in golf turf, at least until more is known about how turfgrass pathogens react to repeated use of the different chemical groups and active ingredients mentioned in this article.As summer approaches, plans are being finalized for disease prevention and control programs. In addition to providing very good dollar spot control, Xzemplar is labeled for brown patch, fairy ring, large patch, snow mold diseases, spring dead spot, summer patch, leaf spot diseases, leaf & sheath spot, as well as algae for golf courses, sports turf and residential uses. It is produced through the transport of electrons along the respiratory chain in mitochondria.
Flutolanil was developed in Japan by Nihon Nohyaku Co., Ltd. in the mid-1980s and is marketed in the U.S. by Bayer as the turfgrass fungicide Prostar (3). Crop Protection 29:643-651. Crop Protection 29:643-651.All SDHI fungicides have the same basic mode of action: prevention of energy production in fungal cells. Currently, there are at least 18 active ingredients that comprise the SDHI fungicides; six of these are labeled for turfgrass diseases.Xzemplar was recently introduced to the turf market by BASF.
Adenosine triphosphate (ATP) is a molecule present in cells of all living organisms that provides energy for essential life functions. Photo: P. Landschoot, Penn StateEven though exceptions to cross resistance have been reported for some pathogens in certain cropping systems with selected SDHI fungicides, it is prudent to rotate use of different SDHI fungicides in golf turf, at least until more is known about how turfgrass pathogens react to repeated use of the different chemical groups and active ingredients mentioned in this article.4. In addition to providing very good dollar spot control, Xzemplar is labeled for brown patch, fairy ring, large patch, snow mold diseases, spring dead spot, summer patch, leaf spot diseases, leaf and sheath spot, as well as algae for golf courses, sports turf and residential uses. SDHI fungicides bind to the SDH complex and block the transport of these electrons, energy production is curtailed, and fungal growth is arrested (4).Velista has shown very good efficacy against anthracnose in Penn State field trials.
Despite having the same basic mode of action, individual SDHI fungicides differ in chemical structure and diseases controlled. In addition to the diseases listed on the Xzemplar label, Lexicon Intrinsic lists anthracnose, bermudagrass decline, brown ring patch, gray leaf spot, Pythium blight/root rot and several others.Get notified when we have news, courses, or events of interest to you.This year, Bayer launched a new fungicide called Exteris Stressgard.