Sphaerex
- Manufacturer
- BASF
- Category
- Fungicides
- Registered until
- N/A
- Registration number
- 7969-473
- Active materials
- metconazole0.939 lb/gallon
- prothioconazole1.565 lb/gallon
Product Information
SphaerexT fungicide is a broad-spectrum fungicide containing the active ingredients metconazole and prothioconazole for use in wheat, barley, oats, rye, and triticale For optimum disease control, apply Sphaerex in a regularly scheduled protective spray program and use in a rotation program with non-Group 3 fungicides Mode of Action Metconazole and prothioconazole, the active ingredients in Sphaerex, inhibit the demethylation step of sterol biosynthesis (DMI), which disrupts cell membrane synthesis and are classified by the Fungicide Resistance Action Committee (FRAC) as Group 3 fungicides Resistance Management Sphaerex contains Group 3 fungicides Any fungal population may contain individuals naturally resistant to Sphaerex and other Group 3 fungicides A gradual or total loss of pest control may occur over time if these fungicides are used repeatedly in the same fields Follow appropriate resistance management strategies To delay fungicide resistance, take one or more of the following steps:
• Rotate the use of Sphaerex or other Group 3 fungicides within a growing season sequence with different groups that control the same pathogens
• Use tank mixtures with fungicides from a different group that are equally effective on the target pest when such use is permitted Use at least the minimum application rate as labeled by the manufacturer
• Adopt an integrated disease management program for fungicide use that includes scouting, uses historical information related to pesticide use, and crop rotation, and which considers host plant resistance, impact of environmental conditions on disease development, disease thresholds, as well as cultural, biological and other chemical control practices • Where possible, make use of predictive disease models to effectively time fungicide applications Note that using predictive models alone is not sufficient to manage resistance
• Monitor treatment area for lack of biological efficacy that might indicate possible resistance development
• Contact your local extension specialist or certified crop advisor for any additional pesticide resistancemanagement and/or Integrated Pest Management (IPM) guidance for specific crops and pathogens
• For further information or to report suspected resistance, consult your local BASF representative, extension specialist, or certified crop advisor
Ground Application
Thorough coverage of foliage and flowers is required for optimum disease control A nonionic surfactant at the lowest labeled rate may be used to improve spray coverage Refer to the adjuvant product label for specific use directions DO NOT use adjuvants that contain methylated seed oil, crop oil concentrate, or crop oil with emulsifier properties
Aerial Application
Select spray nozzles, pumping pressure, and sprayer height to provide medium-to-fine spray droplets that penetrate throughout the crop canopy Spray calibration must be conducted to confirm spray droplet sizes Continue to monitor spray application (including weather conditions) to assure proper droplet size and canopy penetration For all aerial application volumes (gpa), a nonionic surfactant at the lowest labeled rate may be used to improve spray coverage Refer to the adjuvant product label for specific use directions DO NOT use adjuvants that contain methylated seed oil, crop oil concentrate, or crop oil with emulsifier properties