How are DiPel® DF and XenTari® Different from Other Bts? Bacillus thuringiensis (Bt) is a naturally-occurring bacterium and the most widely used biological insecticide globally. Unlike synthetic insecticides, Bts generate insecticidal crystal proteins (Cry-proteins), which bind to specific target sites only found in the Lepidoptera gut. Cry-proteins cause the Lepidoptera gut to rupture, stopping feeding quickly. DiPel® DF Biological Insecticide Dry Flowable† and XenTari® Biological Insecticide Dry Flowable† offer effective ratios of unique Cry-proteins to control problematic Lepidoptera. DiPel DF is designed for broad spectrum Lepidoptera activity by having a balanced ratio of four Cry-proteins (Figure 1). XenTari has a Cry-protein profile that includes Cry1D (Figure 1), which is not found in any other product. DiPel DF targets Lepidoptera like leafrollers and internal feeders like codling moth. XenTari provides outstanding control of armyworm and diamondback moth Lepidoptera due to its optimized Cry-protein profile.
DiPel DF Cry-Proteins and Fit Proven, broad spectrum Lepidoptera control
XenTari Cry-Proteins and Fit Optimized armyworm and diamondback moth solution
Figure 1. DiPel DF and XenTari include effective ratios of unique Cry-proteins to control problematic Lepidoptera
The Cry-Protein Strain and Ratio Make the Difference with Bts Lepidoptera have different Cry-protein target sites, as shown below in Figure 2. Bts can have a broad spectrum (like DiPel DF) or a unique spectrum (like XenTari ) of activity based on the type and ratio of Cry-proteins they contain. Each Cry-protein can bind to a different receptor in the Lepidoptera gut. Figure 2 shows a sampling of key pests and how each is impacted from the optimized strain and ratio of Cry-proteins found in DiPel DF and XenTari .
Lepidopteran Species
Cry-Proteins only in DiPel DF
Cry-Proteins in DiPel DF & XenTari
Cry-Proteins only in XenTari
Cry1Ac
Cry2A Cry1Aa Cry1Ab
Cry1C Cry1D
Obliquebanded Leafroller
+
++ ++ ++
+ + + +
+
+
-
Codling Moth
-
++
-
+ + + +
Cabbage Looper Armyworm species Diamondback Moth
++
+
+
-
- -
++ ++
++ ++
++
++
Figure 2. ++ good activity + moderate activity - poor control
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