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Harvesting Activities

Manual harvesting

Sickle (16 mandays/ha)

Mechanical harvesting

2 to 2.5 ha/day with 2 laborers depends on terrain, plot size and shape, and field and plant conditions depends on 3 M (man, machine, material)

Collecting/Piling

Cut plants should be collected and piled right after cutting. Field drying is not recommended to maintain uniform grain

dryness and minimize losses

Piling fresh or wet grains in straws resulted to yellowing,fermentation, discoloration

Collected and piled palay

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Harvest Management

Cut and thresh the crop at the right time. Harvest/reap

the crop when 1/5 or 20% of the grains at the base of the

panicle are in hard dough stage.

Timely reaping and threshing ensure good grain quality,

high market value, and consumer acceptance.

Reaping too early results in a larger percentage of

immature grains and lower milling recovery. Reaping too

late leads to increased grain shattering and excessive losses

in terms of breakage during milling.

Harvesting using Mini-Combine harvester

Manual harvesting

Fair use of this material is encouraged. Proper citation is requested. | 2010, OPAPA-PhilRice

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Threshing

Thresh immediately after reaping(over-dried or fermented straws resulted to excessive grain loss)

Proper threshing drum speed Machine in A-1 conditions Expert operators

Cleaning

Impurities lowers grain standards, thus lowers its value Impurities contributes to grain deterioration Can be done thru manual (winnowing) or

mechanical (blowers, sieves, screens) means

Reviewed by:

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Threshing of harvested palay

Cleaning by winnowing

Fair use of this material is encouraged. Proper citation is requested. | 2010, OPAPA-PhilRice