At maturity and harvest, seed often have moisture contents too high for safe
bulking, as must be done for conditioning and storage. When seed are bulked
together after harvest, they must be of low moisture content in order to
prevent deterioration and loss. If moisture content of seed or inert material
in the seed is high when harvested, the seed cannot be stored safely, even for
short periods. High moisture content will cause heating, excessive mold
growth, and drastic and rapid loss of germination. To prevent loss of
germinability, high-moisture seed must be carefully dried down to 11–13%
moisture before being bagged, bulked, or stored under conditions where
free air circulation is restricted. Drying is a science and an industry in itself,
and only a general review of drying is covered here.
Drying seed not only reduces the danger of heat, mold and insect damage,
but also conditions seed so that they can be processed more efficiently.
Many grass seed conditioners dry seed to specific moisture levels before
conditioning, to increase efficiency of operations such as debearding, and
improve the flow of seed through conditioning machines. Barley, a small
grain, also cannot be threshed and debearded properly if its moisture content
is high.
At maturity and harvest, seed often have moisture contents too high for safebulking, as must be done for conditioning and storage. When seed are bulkedtogether after harvest, they must be of low moisture content in order toprevent deterioration and loss. If moisture content of seed or inert materialin the seed is high when harvested, the seed cannot be stored safely, even forshort periods. High moisture content will cause heating, excessive moldgrowth, and drastic and rapid loss of germination. To prevent loss ofgerminability, high-moisture seed must be carefully dried down to 11–13%moisture before being bagged, bulked, or stored under conditions wherefree air circulation is restricted. Drying is a science and an industry in itself,and only a general review of drying is covered here.Drying seed not only reduces the danger of heat, mold and insect damage,but also conditions seed so that they can be processed more efficiently.Many grass seed conditioners dry seed to specific moisture levels beforeconditioning, to increase efficiency of operations such as debearding, andimprove the flow of seed through conditioning machines. Barley, a smallgrain, also cannot be threshed and debearded properly if its moisture contentis high.
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