. Agri-news. Agriculture. -2- 8. Check for Grain Beetle infestations (cont'd) Red flour beetles are also reddish-brown, about one- sixth of an inch long and have rounded backs and short, stubby antennae. They are not cold-hardy and cannot survive in grain when the temperature falls below $C. Detection Red Flour Beetle There are two methods of checking for grain beetles. One is to take samples of grain from the surface with your hands and from lower levels with a probe. Probes can be borrowed from most elevator agents. Screen the samples with a sieve that has large enough holes to let the beetl
. Agri-news. Agriculture. -2- 8. Check for Grain Beetle infestations (cont'd) Red flour beetles are also reddish-brown, about one- sixth of an inch long and have rounded backs and short, stubby antennae. They are not cold-hardy and cannot survive in grain when the temperature falls below $C. Detection Red Flour Beetle There are two methods of checking for grain beetles. One is to take samples of grain from the surface with your hands and from lower levels with a probe. Probes can be borrowed from most elevator agents. Screen the samples with a sieve that has large enough holes to let the beetles fall through. It is easier to see them if you place a piece of white paper under the sieve and use a magnifying glass. In the winter you should warm the screening to room temperature. The beetles are more easily seen when they warm up and start moving around. The second method of detection entails the use of an insect trap which you can make out of a piece of pipe. Close off one end, and drill holes the full length of the pipe. The holes should be large enough for the insects to pass through, but too small to allow the entry of grain kernals. Open the closed end of the pipe (which should extend to the bottom of the bin) about every two weeks to see how many beetles are in it. You can also use the pipe to check for heating in the grain. The more traps in a bin, the more chance you have of detecting an infestation. Commercial insect traps are available, at a price of $ each, from Gen Manufacturing Limited, Box 560 Coaldale. They can be attached to the end of a long pipe and inserted into the grain. Since there can be a large population of larvae in grain with very few adult beetles present, Mr. Dolinski recommends checking for larvae as well. This can be done by putting samples of grain on a screen, placed over a collecting container, and hanging a light bulb close to the surface of the grain. If there are any larvae, the heat from the light bulb. -(cont'd)-. Please note
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