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โครงการหนังสออเล็กทรอนกสด้านการเกษตร เฉลมพระเกียรตพระบาทสมเด็จพระเจ้าอยู่หัว
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1. Overview
Before reaping the six fruits focused on in this book, their planting is studied
in this chapter with the following four parts (Table 3.1):

1) Variety : major varieties or cultivars ; the list of GI (geographical
1
indication);
2) Trend : output trend in three years, including planting area, output,
output per rai, and fame gate price;
3) Structure : output structure in geographic regions; by major varieties
and seasonal variations;
4) Parameter : technical parameters such as growth period (life of

a tree, years before carrying fruit, flowering period before harvest,
harvest time), planting intensity, and unit cost.
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Table 3.1 Organization of Chapter 3

Source: CASPIM
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Varieties often occur in nature, and most varieties are true to type: the seedlings with the same unique
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characteristic as the parent. Cultivars are “cultivated varieties” by humans. They are not necessarily true to type.
To propagate true-to-type clones, many cultivars must be propagated vegetatively through cuttings, grafting,

or even tissue culture.
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