INTRODUCTION
Pyrethroid resistant alfalfa in Goldendale, WA has been annihilating the alfalfa crops in the area for several years. STEWARD® EC INSECTICIDE has been a great choice for battling the weevil. However STEWARD® EC INSECTICIDE is a slow working ingestion poison group 22 insecticide.
HYPOTHESIS
Adding NanoPro® to the tank mix will increase the efficacy and the quickness of STEWARD® EC INSECTICIDE.
MATERIALS
- NanoPro®
- STEWARD® EC INSECTICIDE
- LEVEL 7®
- InterLock®
PROCEDURE
- Fill spray tank with water halfway
- Turn on agitator
- Add STEWARD® EC INSECTICIDE and NanoPro®
- Add Interlock® and LEVEL 7®
- Two areas were sprayed - East and West Field respectively.
- Sweeps (Two Sweeps of the net per “sweep”) were taken before sprays to determine weevil counts
- Sweeps were taken 3 days after the application to determine counts
- Sweeps were taken 8 days after the application to determine counts
CONCLUSION
The preliminary conclusion is that the nanoparticles increased the speed that the ingested insecticide reacted with the weevils causing a quicker death.
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