Page 425 - niengiam2021

Annual planted area is recorded when the plant starts its growing

process for each cropping season. In case that in the same area where
crops are replanted many times due to being dead, the area is also
recorded once time.

The area of perennial crop is the area of agricultural crops
growing from the planting time to the first time of harvesting for one

year and over and harvests products for many years, including
industrial crops (tea, coffee, rubber, etc.), fruit trees (oranges, lemons,
longans, etc.), medical plants (cinnamon, beans, etc.).

Current area of perennial crops only recorded for the area of
crops that are still alive at the time of observation, including the area

of concentrated cultivation and the area converted from area of
scattered trees having products to the concentrated area.

Production of agricultural crops is the total volume of the
main product of a certain agricultural crop or group of agricultural
crops obtained in a cropping season or in a year of an agricultural

production unit or a region/ geographical area.
Production of each type of agricultural crops is determined by

the form of the product. For products such as rice, maize, green beans,
soybeans, etc. are recorded in the form of dry grain; sweet potatoes,
potatoes, cassava are recorded in form of fresh bulbs; tea in form of
fresh buds, coffee in form of dry kernel, rubber in form of dried latex,

fruits in form of fresh fruits, etc.

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.

 For annual crops:

Harvested production
Planted yield =
Planted area

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