---

---

Callisto and potential crop damage

Callisto is a herbicide that is used to control broadleaf weeds in a variety of crops. It is a member of the triazine family of herbicides and works by inhibiting the production of certain essential plant enzymes. Callisto is a relatively safe herbicide, but it can cause damage to some crops if it is not used properly.

The most common type of damage caused by Callisto is leaf burn. This can occur if the herbicide is applied to leaves that are wet or if the wind blows the herbicide onto leaves. Leaf burn can also occur if the herbicide is applied at a rate that is too high or if it is applied to crops that are not tolerant to Callisto.

In some cases, Callisto can also cause stunting or death of plants. This is more likely to occur in sensitive crops or if the herbicide is applied under stressful conditions.

If you are concerned about the potential for Callisto to damage your crops, it is important to read the label carefully and follow the directions. You should also avoid applying the herbicide to wet leaves or when the wind is blowing. If you do experience damage, you should contact your local extension office for assistance.

Here are some tips to help prevent Callisto herbicide damage to crops:

• Read the label carefully and follow the directions.
• Avoid applying the herbicide to wet leaves or when the wind is blowing.
• Do not apply the herbicide to crops that are not tolerant to Callisto.
• Monitor your crops for signs of damage and contact your local extension office if you see any problems.

  ---

  ---

  Application per Syngenta
  BLUEBERRY, CURRANT (BLACK AND RED), LINGONBERRY, RASPBERRY (BLACK AND RED), AND BLACKBERRY Callisto Herbicide may be applied as a pre-bloom post-directed spray in high bush blueberry, lingonberry, red currant, black currant, black raspberry, red raspberry, and blackberry. For a list of weeds controlled see Tables 1 and 2. Callisto Herbicide may be applied in bush or caneberries at a rate up to 6 fl oz/A. If a split application weed control program is desired, 3 fl oz/A followed by 3 fl oz/A may be used. The use of a crop oil concentrate (COC) type adjuvant at the rate of 1% v/v is recommended, but avoid using COC adjuvants that are injurious to blueberry and lingonberry leaves.
  In low bush blueberries, Callisto Herbicide may only be applied in the non-bearing year. This application may be a broadcast application. Up to 6 fl oz/A of Callisto Herbicide may be applied in a single application, or 3 fl oz/A followed by 3 fl oz/A if used in a split application program. The use of a crop oil concentrate (COC) type adjuvant at 1% v/v is recommended. Applications of Callisto Herbicide during dry weather conditions and/or temperatures above 85° can cause injury to Lowbush blueberries. Applications of Callisto Herbicide can cause yellowing or necrosis of leaves and under severe conditions, leaf drop may occur especially on “Sourtop” variety blueberries. Restrictions: 1. Do not make more than two applications of Callisto Herbicide per year. 2. Do not apply more than 6 fl oz/A (0.19 lb ai/A) of Callisto Herbicide per year. 3. If two applications are made, they must be made no closer than 14 days apart. 4. Do not apply Callisto Herbicide to

• 

  ---

  ---

  he following raspberry varieties are least susceptible to pesticide damage:

• Heritage
• Jewel
• Knox
• Nova
• Purple Passion
• Quartz
• Royalty
• Snozzberry
• Willamette

These varieties are naturally resistant to many pests and diseases, so they require less pesticide use. They are also relatively easy to grow, making them a good choice for home gardeners.

It is important to note that even these resistant varieties can be damaged by pesticides if they are used improperly. It is always best to follow the directions on the pesticide label carefully and to avoid using more pesticide than is necessary.

Here are some tips for reducing your use of pesticides on raspberries:

• Plant resistant varieties. As mentioned above, there are several raspberry varieties that are naturally resistant to pests and diseases. By planting these varieties, you can reduce your need for pesticides.
• Use integrated pest management (IPM). IPM is a holistic approach to pest control that uses a variety of methods, including biological controls, cultural controls, and chemical controls, to keep pests in check. IPM can help you reduce your reliance on pesticides.
• Practice good sanitation. Keeping your raspberry patch clean and free of debris can help to prevent the spread of pests and diseases. Remove any dead or diseased leaves or fruit as soon as possible.
• Rotate your crops. Rotating your crops from year to year can help to break the life cycle of pests and diseases.
• Attract beneficial insects. Beneficial insects, such as ladybugs and lacewings, help to control pests. You can attract beneficial insects to your raspberry patch by planting flowers that they like, such as marigolds and dill.
• Use physical barriers. Physical barriers, such as row covers, can help to keep pests out of your raspberry patch.
• Monitor your plants closely. Inspect your raspberry plants regularly for signs of pests and diseases. The sooner you catch a problem, the easier it will be to control.

By following these tips, you can reduce your use of pesticides on raspberries and enjoy a healthy harvest.