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Annual plants are planted, harvested and finished in a production cycle

within a period of no more than 1 year, including annuals that keep the original,
including: grain food crops (rice, corn, barley, millet,...); annual industrial crops
(sugar cane, tobacco, pipe tobacco, cotton, jute, cassava...) and other annual crops
(vegetables and beans, flowers, crop for animal feed, spices, and annual medicinal

crops).

Planted area of annual crop is the area calculated when the crop has finished
the sowing period and has passed the growth and development period.

Harvested area of annual crop is the area of crops grown after the
development period, for harvesting useful products. The harvested area is equal to
the planted area minus the lost area and the area of annual crops for products but

not harvested.

Perennial plants are those planted once, grows for many years and are
harvested one or more times, including: Fruit trees (oranges, lemons, longans,
grapefruits, bananas, pineapples, durians... ); perennial industrial crops (cashew,
pepper, rubber, coffee, tea, coconut...); perennial spice and medicinal plants; other

perennial plants (cocoa, mulberry, gac, betel nut, areca, perennial ornamental
plants).

The area of perennial crop includes the area of concentrated perennial
plants and the conversion area of scattered perennial plants for products.

Productive area of perennial plants/trees is the actual area of perennials
that have completed the basic construction period and have yielded stable

products regardless of whether there are products in that year or not; including the
area of perennial plants for concentrated planting products and and the area
converted from area of scattered trees having products to the concentrated area.

Perennial tree/plant area was calculated at the time of observation.

Yield of agricultural crops refers to the main product per one area unit of a
certain agricultural crop or group of agricultural crops actually harvested in a
production season or in a year on average planted area.

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