Winter Production of White Asparagus From One-Year-Old Rootstocks by Forcing Culture

Jishi, Tomohiro; Maeda, T.; Shiga, Yoshihiko; Araki, H.

doi:10.17660/actahortic.2012.950.1

Cited by 2 publications

(3 citation statements)

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“…Therefore, it is important to develop a new technique to produce a sufficient winter asparagus to meet the present and future demands of domestic markets. Fusekomi forcing culture (FFC) in a plastic greenhouses has been developed in northern Japan as a winter harvest cropping system ("fusekomi" means rootstock planting in Japanese) (Jishi et al 2013). In this cropping system, one or two-year-old rootstocks grown in open fields are harvested just before winter and then transplanted into culture beds in a plastic greenhouse.…”

Section: Because Most Of Asparagus Is Imported From Southmentioning

confidence: 99%

“…The present wood pellet boiler system made a suitable temperature condition for spear emergence in asparagus FFC. The soil temperatures obtained in 3 heating system were enough to grow spears from the buds initiated on the surface of rootstocks (Jishi et al 2013). Besides, air temperature was kept more than 0°C inside Period of full examination: 45 days (Jan.6 -Feb.21, 2014) *Estimated income; Marketable spear yield (kg / bed) x Spear price (2150 yen / kg).…”

Section: Heating Systemmentioning

confidence: 99%

“…Longterm production of asparagus is important because the demand for fresh asparagus in domestic markets has been steadily expanding. Cropping systems for long-term production have been established in southwestern Japan, such as mother fern culture (Jishi et al 2013).…”

mentioning

confidence: 99%

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CO2 Emission and Cost Analysis in Asparagus Fusekomi Forcing Culture with Wood Pellet Boiler

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et al. 2019

Japanese Journal of Farm Work Research

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Domestic fresh asparagus is demanded in Japan from late autumn to winter. Asparagus production in greenhouse in winter needs a large amount of oil or electricity for heating, leading to CO 2 emissions and high costs, and an alternative heating system with low carbon emission is therefore required for winter cultivation of asparagus. Three heating systems were prepared for the asparagus fusekomi forcing culture (FFC) in a plastic greenhouse in midwinter in Hokkaido, i) conventional system i.e. electrically heated wire system for soil heating, ii) a hot water system for soil heating only, iii) a hot water system for both soil and air heating. Hot water was produced by using wood pellet boiler. Average soil temperature at 14 cm depth in the culture bed remained within 15-20°C in each system. Freeze injury of emerged spears was avoided by the hot water heating, especially in the heating of both soil and air even when the outside temperature fell to-18°C. Hot water heating systems generated larger heat and the marketable spear yield showed 1.1-1.3 times of that in the electrically heated wire system. The CO 2 emission and annual cost for 1 kg marketable spear production in the hot water heating system was obviously higher than those in the electrically heated wire system, however the small improvement of spear productivity was recognized in the hot water heating system. Scale of the wood pellet boiler in the present examination, prototype boiler, was excessive for the asparagus production in 9 m-length bed, and suitable scale of wood pellet boiler asparagus production should be installed in future.

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Section: Because Most Of Asparagus Is Imported From Southmentioning

confidence: 99%

Section: Heating Systemmentioning

confidence: 99%