Pests of grain and grain products

Pests of grain and grain products (barn pests - different kinds of mites and insects damaging and destroying grain and products from it. Granaries, infected with pests of grain and grain products, contaminated by their faeces and corpses. Heavily contaminated grain is not suitable for food or people or animals.
flour miteFlour mites (Tyroglyphus Farinae) - very small arthropods, barely visible to the naked eye, almost transparent; feed grain dust and damaged grain. They infect grain musty smell. The abundance of flour mite makes grain and grain products unfit for food, reduces the germination of seeds. From warehouse to warehouse ticks can be transferred with shoes and clothing of the people, and flying insects and mice.


granary weevilGranary weevil (Calandra granaria) - bug 2,2 - 4 mm long, long proboscis that he prosverlivayut shell of the grain and eat away its content; if the reproduction is doing in grain hole to lay an egg. The larva penetrates into the depths of the grain and feed them.


a large flour khruschakBig flour khruschak (Tenebrio molitor) - beetle length 1-1,5 cm, lays eggs in flour or grain. Larvae up to 3 cm long, called flour worms.

 


flour OgnevkaFlour Ognevka (Asopia farinalis L.) - butterfly 9-12 mm long, kept in dark places granaries, lays eggs in groups. The caterpillar off-white color 18 - 20 mm; feed on flour and bran; live in a cocoon, woven from the web with inclusions of flour and bran; adult butterflies appear in July.
To pests of grain and grain products are rodents (see).


Combating barn pests, including rodents, is to conduct activities that prevent infecting granaries, and in the destruction of pests (see Disinsection, Deratization). Crucial to the proper construction of grain storage facilities, equipment and care, and drying of grain to 15% humidity and below ( breeding storage pests occurs).
There are physical-mechanical and chemical curative. In the first case pests collect vacuum cleaners, clear grain on grain cleaning machines and aspiration speakers or destroy them by heating of grain in special drying up temperature 45 - 50C subsequent keeping at this temperature for half an hour.
When chemical fighting equipment, empty premises and vehicles sprayed 10-15% solution of caustic soda, and make processing premises gas - chlorpicrin (at the rate of 25-30 g per 1 m3). Chlorpicrin used for disinfection of grain, subject to grind (60 g on 1 m3 when the grain layer 1.5 m). The treatment is carried out in hermetically closed room for 3-4 days. After processing as a premise, and the grain itself thoroughly ventilated. All pest work is carried out in the warm season, ensuring the safety of personnel.