rength Shrink disk on machine side on request F B4-CH-27B Bevel-helical gear units B4

Flender/Flender Gear Units/Bevel-helical gear units B4

the grain no longer absorbs moisture from its surrounding air. Theequilibrium moisture content (ERH) values are different for various grains. For specicgrain, the values increase with increasing relative humidity and decrease slightly withincreasing temperatures. 1.3 Environmental Factors Inuencing Grain Quality The quality of stored grain depends on four important factors: () initial condition of the grain; () environmental conditions during the period of storage; () biotic factors, suchas insects, rodents, and microorganisms; and () various treatments applied on the grain Grain Storage: Perspectives and Problems 1 during the storage period (.., aeration, drying, fumigation, controlled atmospheres, grain protectants). 1.3.1 Initial Condition of the GrainThe storage properties of the grain are likely to be affected even before reaching the storage premise. Environmental conditions during growth and maturation of grains, the degree of maturity at the time of harvest, harvesting methods, and the method of handlinggrain in the farms inuence the storage quality. Fungal and insect pest activity can startin the eld itself. High temperatures and humidity during maturation of corn are conduciveto aatoxin formation. The level of infection by the storage fungi has been linked to theamount of kernel damage as result of combined harvesting and handling. Insects such as the larger grain borer Prostephanus truncatus and the maize weevil Sitophilus zeamais , which are active yers, infest the grain in the eld itself. It is not uncommon for the maizeand paddy crops to be harvested at high moisture levels of more than 1%, which is notsuitable for storage as such. It needs drying articially or by sunlight (. The sanitarycondition or physical state of the newly harvested grain (.., moisture content, cleanliness,and specic weight) will affect the storage quality. Therefore, it is necessary to conduct quality tests on the grain before binning or taking into storage. These tests inclu