STORED - PRODUCT INSECTS: “INTEGRATED PEST MANAGEMENT – A RESEARCHER’S VIEW” David Weaver DEPARTMENT OF ENTOMOLOGY MONTANA STATE UNIVERSITY BOZEMAN, MT.

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Presentation transcript:

STORED - PRODUCT INSECTS: “INTEGRATED PEST MANAGEMENT – A RESEARCHER’S VIEW” David Weaver DEPARTMENT OF ENTOMOLOGY MONTANA STATE UNIVERSITY BOZEMAN, MT

“INTEGRATED PEST MANAGEMENT – A RESEARCHER’S VIEW” View IPM as the best possible management strategy, with the realization that at this time it is not used in most stored-product situations. Specialty and organic markets have some degree of IPM.

STORAGE PESTS AND DAMAGE

INSECTS CAN FIND FOOD!!

HEAVILY-DAMAGED WHEAT: HOW TO PREVENT THIS?

What is IPM exactly?

MONTANA BULK GRAIN EXAMPLE Low insect numbers Penalty for presence of live insects IDK rare *Similar to low insect tolerances in processing and warehouses

OUR STORAGE SYSTEM

SECONDARY PEST – MOST COMMON INSECT IN MONTANA GRAIN

NEWLY-FILLED BINS CONTAIN A WARM, CONCENTRATED SUPPLY OF FOOD

FIRST STEP SANITATION SPILLED GRAIN, OR GRAIN RESIDUE AS LITTLE AS ½ CUP CAN BE A SOURCE OF PROBLEMS, QUICKLY!

CLEAN THE EMPTY BIN WELL

CLEAN UP 1.AUGUR 2.TRUCK 3.SPILLS 4.COMBINE 5.FEED AREA

SECOND STEP COMMODITY PROTECTION ENSURE THAT GRAIN IS STORED AT 12% MOISTURE CONTENT OR LESS TREAT WITH CHEMICAL OR D.E. PROTECTANT

CONVENTIONAL PROTECTANT

EXAMPLE OF A D. E. PRODUCT

EMPTY BIN ONLY!!

THINGS TO AVOID!! OVERFILLING THE BIN!!! *MONITORING AND SAMPLING IS DIFFICULT IF BIN IS COMPLETELY FILLED

LEVEL THE GRAIN 1. ALLOWS FOR WORKER MOVEMENT 2. ALLOWS FOR MONITORING 3. ALLOWS FOR AIR EXCHANGE

MONITORING PEST POPULATIONS Essential component of IPM Allows for measurement of effectiveness If economic threshold is exceeded, Intervention (fumigation) is required

GRAIN PROBE TRAPS FOR MONITORING Apparatus used

PROBE TRAPS FOR MONITORING

INSERTING GRAIN PROBE WITH ROOM TO MOVE

THIRD STEP TEMPERATURE CONTROL USE AUTOMATIC AERATION TO COOL GRAIN RAPIDLY PREVENTS INSECT REPRODUCTION *REDUCES COSTS BY LOWERING PROBABILITY OF “PRESENCE” PENALTY

AERATION STUDY

Diagram showing trap locations.

3 H.P. TURBINE FAN – 3000 BUSHELS

AERATION DUCTING

FIXED TEMPERATURE CABLES

SOFTWARE TO MANAGE AERATION

WEATHER STATION FOR AERATION INPUT

AERATION RESULTS FOR TWO YEARS

TRAP SITE CONTROLAERATION NORTH 19 0 SOUTH 36 0 EAST 6 0 WEST 7 0 CENTER523 1 TOTAL TRAP CAPTURES 5/17 – 5/31, 2001 Rusty Grain Beetles - Moccasin, MT

RESULTS 1. AERATION WAS EFFECTIVE 2. COSTS $ 0.02/bu. 3. UNAERATED BULK – PENALTY + FUMIGATION $0.10/bu. *BUT WHY MONITOR? *CAN’T YOU JUST AERATE?

ANSWER TO SAVE MONEY!! IF THE AERATION FAILED, THE GRAIN MIGHT BE REJECTED AT THE ELEVATOR. THEN, ADDITIONAL COSTS FOR TRUCKING AND FUMIGATION COULD AMOUNT TO $0.15/bu. IF AERATION FAILS, ON-SITE FUMIGATION BEFORE REJECTION ONLY COSTS $0.02/bu. IF AERATION WORKS THERE ARE NO ADDITIONAL COSTS

SUMMARY IPM is a good idea!! This simple example shows that although the stored product environment often requires fixed inputs, the basic idea of monitoring to determine when action needs to be taken, and monitoring to evaluate the effectiveness of given procedures can be cost effective. These concepts can be further applied to processing and milling facilities. *More research needs to be conducted on developing and integrating management strategies.