Info

13,551

Figure 3. Number of offspring five months after 50 pairs of rice weevils were placed in wheat. Source: Ref. 21.

Figure 3. Number of offspring five months after 50 pairs of rice weevils were placed in wheat. Source: Ref. 21.

sample (100 g) reveals 32 or more IDK, the load is graded U.S. Sample Grade wheat. The grading agency then notifies the FDA and the load or lot is declared unfit for human consumption, forcing it to be marketed as feed grain or for alcohol production. This market can be from $0.20 to $1.50 per bushel less than food-grade wheat.

Given the reproductive potential of insects, the complex life cycles, and the fact that several different species of insects are capable of damaging stored grain, management plans that utilize multiple control strategies are used for stored grains. Many programs include but are not limited to the following:

1. Emphasis on maintaining high grain quality standards (recent FGIS changes have increased the awareness of the need for better management)

2. Sanitation and cleaning around storage facilities to prevent insects from establishing resident populations

Table 2. Stored-Grain Insects—Life Cycles and Characteristics

Insect

Life cycle (days), egg to egg

Adult life (days)

Number of eggs

Penetrate packages

Fly

Confused flour beetle

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