ORNAMENTALS - AZALEAS, RHODODENDRON, ETC. - SHOOT/STEM DISEASES
Heritage is a broad spectrum, preventative fungicide with systemic and curative properties recommended for the control of many important plant diseases. Heritage may be applied as a foliar spray in alternating spray programs or in tank mixes with other registered crop protection products. All applications should be made according to the use directions that follow.
GENERAL USE PRECAUTIONS
Do not graze or feed clippings from treated turf areas to animals. Do not plant the following crops for a period of 12 months (unless an azoxystrobin product is registered for use on that crop): sorghum, barley, buckwheat, millet, oats, rye, wild rice, non-grass animal feeds (alfalfa, clover), sugarcane, triticale and wheat. A plantback interval (PBI) of 36 days is required for Leafy Vegetables (Except Brassica) group; Brassica, Leafy Greens subgroup; Vegetables, Root subgroup; Vegetable (Tuberous and Corm) subgroup; and Vegetables, Leaves of Root and Tuber group. Azoxystrobin is registered for use on all other rotated crops and all other crops may be planted immediately after the last treatment.
Heritage is extremely phytotoxic to certain apple varieties.
AVOID SPRAY DRIFT. Extreme care must be used to prevent injury to apple trees (and apple fruit).
DO NOT spray Heritage where spray drift may reach apple trees.
DO NOT spray when conditions favor drift beyond area intended for application. Conditions which may contribute to drift include thermal inversion, wind speed and direction, sprayer nozzle/pressure combinations, spray droplet size, etc. Contact your State extension agent for spray drift prevention guidelines in your area.
DO NOT use spray equipment which has been previously used to apply Heritage to spray apple trees. Even trace amounts can cause unacceptable phytotoxicity.
AVOIDING SPRAY DRIFT IS THE RESPONSIBILITY OF THE APPLICATOR.
Heritage has demonstrated some phytotoxic effects when mixed with products that are formulated as EC’s. These effects are enhanced if applications are made under cool, cloudy conditions and these conditions remain for several days following application. In addition, adjuvants that contain some form of silicone have also contributed to phytotoxicity.
INTEGRATED PEST (DISEASE) MANAGEMENT
Heritage should be integrated into an overall disease and pest management strategy whenever the use of a fungicide is required. Cultural practices known to reduce disease development should be followed. The SPECIFIC USE DIRECTIONS section in the label identifies specific IPM recommendations for each crop. Consult your local agricultural, turf and ornamental authorities for additional IPM strategies established for your area. Heritage may be used in State Agricultural Extension advisory (disease forecasting) programs which recommend application timing based on environmental factors favorable for disease development.
Heritage (azoxystrobin) is a Group 11 fungicide. The mode of action for Heritage is the inhibition of the Qo (quinone outside) site within the electron transport system as well as disruption of membrane synthesis by blocking demethylation [Group 11].
Fungal pathogens can develop resistance to products with the same mode of action when used repeatedly. Because resistance development cannot be predicted, use of this product should conform to resistance management strategies established for the crop and use area. Consult your local or State agricultural authorities for resistance management strategies that are complementary to those in the label. Resistance management strategies may include alternating and/or tank-mixing with products having different modes of action or limiting the total number of applications per season. Syngenta Crop Protection encourages responsible resistance management to ensure effective long-term control of the fungal diseases on the label.
Follow the crop specific resistance management recommendations in the directions for use.
In situations requiring multiple sprays, develop season-long spray programs for Group 11 (QoI) fungicides. In crops where two sequential Group 11 fungicide applications are made, they should be alternated with two or more applications of a fungicide that is not in Group 11. If more than 12 applications are made, observe the following guidelines:
- When using a QoI fungicide as a solo product, the number of applications should be no more than 1/3 (33%) of the total number of fungicide applications per season.
- For QoI mixes in programs in which tank mixes or pre mixes of QoI with mixing partners of a different mode of action are utilized, the number of QoI-containing applications should be no more than 1/2 (50%) of the total number of fungicide application per season.
- In programs in which applications of QoI are made with both solo products and mixtures, the number of QoI-containing applications should be no more than 1/2 (50%) of the total number of fungicide applied per season.
If a Group 11 fungicide is applied to the seed or soil, do not make another application with a Group 11 fungicide for at least 3 weeks.
Heritage Fungicide is recommended for control of certain pathogens causing foliar, aerial, and root diseases, including leaf, tip, and flower blights, leaf spots, downy mildew, powdery mildew, anthracnose, and rusts of ornamental plants. Heritage Fungicide may be used to control certain diseases of container, bench, flat, plug, bed or field-grown ornamentals in greenhouses, shade-houses, outdoor nurseries, retail nurseries, and other landscape areas.
Integrated Pest (Disease) Management: Heritage Fungicide should be integrated into an overall disease management strategy that includes selection of varieties with disease tolerance, optimum plant populations, proper fertilization, winter and/or spring pruning, plant residue management and proper timing and placement of irrigation. Immunoassay detection kits and diagnostic services can assist in the early and accurate identification of causal organisms and corresponding selection of the proper fungicide when required.
Resistance Management: Some ornamental disease pathogens are known to have developed resistance to fungicides used repeatedly for their control. Heritage Fungicide should be applied in an alternation or tank mix program with other registered fungicides that have a different mode of action and to which pathogen resistance has not developed. Do not make more than three (3) sequential applications of Heritage Fungicide before alternating with a fungicide of a different mode of action. A sound resistance management program would include blocks of three Heritage Fungicide applications separated by blocks of two alternate fungicide applications. Do not alternate Heritage Fungicide with other strobilurin fungicides.
Application Directions: Apply Heritage Fungicide as a broadcast or banded spray targeted at the foliage or crown of the plant.
Apply to runoff in sufficient water to ensure complete coverage of the target plant. Good coverage and wetting of foliage is necessary for best control. Refer to the label for specific use directions for control of certain diseases. Repeat applications at specified intervals (plus alternations for resistance management) for as long as required. Applications may be made by ground only.
Heritage Fungicide applications should begin prior to disease development and continue throughout the season at specified intervals following resistance management guidelines. Heritage Fungicide works best when used as part of a preventative disease management program.
Use only surfactants approved for ornamental plants in combination with Heritage Fungicide. Do not use silicone based products with Heritage Fungicide due to possible phytotoxicity. Always test tank mixes on a small group of representative plants prior to broadscale use.
Apply Heritage at use rates of 1-4 oz./100 gallons (0.5-2 oz./50 gallons) and every 7-28 days (or as otherwise specified for a specific plant or disease). The addition of a non-silicone based wetter-sticker at the recommended use rate may enhance coverage on hard-to-wet plant foliage.
Under most conditions and for most diseases, apply 2-4 oz./100 gallons (1-2 oz./50 gallons) on a 7-14 day interval.
Under light to moderate disease pressure, use the lower rates (1-2 oz./100 gallons or 0.5-1 oz/50 gallons) on a 7-14 day interval or the higher rates (3-4 oz./100 gallons or 1.5-2 oz./50 gallons) on a 14-28 day interval.
Under environmental conditions which promote severe disease development, use the higher rates (3-4 oz./100 gallons or 1.5-2 oz/50 gallons) on a 7-14 day interval.
Use of Heritage as a “rescue” (late curative or eradicant) treatment may not always result in satisfactory disease control.
Do not exceed 10 lbs. product/crop acre/year or 8 applications/crop/year.
Do not exceed 600 gallons spray volume per acre for foliar applications. For drench and crown applications, do not exceed 2 pints volume per square foot.
In addition, do not tank mix Heritage with other fungicides, insecticides, herbicides, fertilizers, adjuvants, etc., unless local experience indicates that the tank mix is safe to ornamental plants.
General Ornamental Use Precautions
Do not apply Heritage to apple or cherry trees (Flowering, Yoshina variety) due to possible phytotoxicity. Further, do not use spray equipment that has applied Heritage for use in these sensitive crops due to possible phytotoxicity from residue remaining in the sprayer.
Heritage may be applied to certain varieties of crabapple for control of apple scab. Heritage has been shown to be safer when applied to the species and varieties listed in Table 4. However, due to the large number of genera, species, and varieties of crabapple, it is impossible to test every one for tolerance to Heritage. The professional user should conduct small scale testing to ensure plant safety prior to broadscale commercial use on plant genera and species not listed on the label.
Plant Safety: Heritage Fungicide has been shown to be safe when applied to the ornamental plants listed in Tables 2, 3, and 4. However, due to the large number of genera, species and varieties of ornamental and nursery plants, it is impossible to test every one for tolerance to Heritage Fungicide. Neither the manufacturer nor the seller has determined whether or not Heritage Fungicide can be used safely on genera, species, or varieties of ornamental and nursery plants not specified on the label. The professional user should conduct small scale testing to ensure plant safety prior to broadscale commercial use on plant general and species not listed in the label.
In addition, do not tank mix Heritage Fungicide with other fungicides, insecticides, herbicides, fertilizers, adjuvants, etc, unless local experience indicates that the tank mix is safe to ornamental plants.
Do not apply Heritage Fungicide to certain apple, crabapple, or cherry trees due to possible phytotoxicity. Further, do not use spray equipment that has applied Heritage Fungicide for use in these sensitive crops due to possible phytotoxicity from residue remaining in the sprayer.
Use Rates and Remarks
8 oz. and larger containers (oz. product per 100 gallons)
- Apply 1-2 oz every 7-28 days.
4 oz. containers (oz. product per 50 gallons)
- Apply 0.5-1 oz. every 7-28 days.