Agriculture Reference
In-Depth Information
per unit weight of bunching onion are more than double those for bulb onions,
so the value of the two crops in Japan is similar (Rabinowitch and Brewster,
1990a). South Korea produces about 430,000 t of Japanese bunching onions
annually. China produced 16,010,000 t of bunching onion in 2001 on
478,000 ha, an increase from 3,474,600 t on 114,200 ha in 1990, a period
over which total vegetable production in China approximately doubled (Debin
et al. , 2005). Annual Japanese production of rakkyo is about 30,000 t, much
being used to produce high-value pickles, and annual Chinese chive
production is about 66,000 t. These latter two crops sell for a price per unit
weight roughly three times that of onion bulbs in Japan, so again the relative
economic importance of the crops needs to be adjusted for price differences. In
China, Chinese chive production was 7,574,600 t from 232,800 ha in
cultivation in 2001, an increase from 3,474,600 t from 90,000 ha in 1990
(Debin et al. , 2005). Exports from China of cooled fresh green alliums and
pickled alliums have been increasing in recent years and were worth US$36
and 115 million, respectively in 2001 (Debin et al. , 2005).
Chives are widely grown as a home garden plant for use as a flavouring
herb. The total world area of commercial production is about 1000 ha, with
large areas in Denmark, New Zealand and Germany (Poulsen, 1990). They are
grown in greenhouses in Germany following a 'forcing' treatment (see Chapter
4) to provide winter leaves.
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