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Transcript

POST HARVEST ON CORN

Requirements during the

Harvesting Process

• Harvest corn as soon as it is dry.

• Dry corn on cement floor or use tarpaulin to reduce chance of contamination.

Time to harvest

Harvesting

Harvest the corn cobs and transport them to

the crip without putting them on soil to avoid

contamination.

Corn can store for a considerable period in unprocessed form without undergoing deterioration.

Its shelf life greatly depends on the prevailing ambient temperature and relative humidity, and other factors like the inherent moisture pests and diseases.

DRYING is the systematic reduction

of crop moisture down to safe levels for

storage, usually 12%-15.5% moisture content.

Activities after Harvesting

After harvesting, farmers should clean all the materials

used in the process of harvesting and store them

properly, away from sources of contamination and insect breeding places.

After harvesting, the grain must be dried as soon as

possible . Avoid drying the maize on the ground. Grain that is

in contact with the ground will

absorb moisture and

pick up dirt and insects. Drying maize on plastic s

heets or mats is becoming a

common practice

with

farmers who are trying to keep maize off the ground

during drying. This practice is discouraged becaus

e

of the following reasons:

Someone should watch the grain while it dries.

At night or when it rains, the grain must be broug

ht under shelter.

Grain can be washed away in case of a sudden down

pour.

Risk of contamination from dusts, soil, stones, an

imal droppings, fungal and insect infestation.

Losses from birds, poultry and domestic animals, r

esulting into contamination and quantitative

losses.

The method is time consuming and labour intensive

involving lots of grain handling.

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