Development of a Closed, Cost- and Energy-Saving Hydroponic System for Hillside Tomato Production

Higashide, Tadahisa; Kasahara, Yoshiaki; Ibuki, Toshihiko; Sumikawa, Osamu

doi:10.2503/hrj.4.33

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Namely, upon completion of the fertigation, the remaining nutrient solution in the dripper lines flowed from the drippers onto the field at the lower part of the dripper line due to gravity ( Table 1). Higashide et al 5 also showed that a considerable amount of solution leaked from the lowest line after finishing the fertigation when the dripper lines were set at contours. When fertigation was conducted with the developed system, emissions from the dripper were uniform and no emission was found upon completion of fertigation.…”

Section: Development Of Drip Fertigation In a Sloping Greenhousementioning

confidence: 99%

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Development of a Drip Fertigation System for Protected Horticulture on Sloping Land

Kawashima

2013

JARQ

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of new markets 10. Masubuchi 10 also pointed out the importance of using agricultural facilities, or greenhouses, and small machines on the sloping land. Facilities and labor-saving technologies used to establish new production systems for sloping-land horticulture have been developed, and include sloping greenhouses, which utilize sloping land effectively, and a portable monorail-type sprayer 12. Fertigation is a method of feeding nutrient solutions and water to crops effectively by adding soluble fertilizers to an irrigation system, saving time and labor and ensuring uniform water distribution 15. Fertigation can feed nutrient solution and/or water automatically by programmed schedules. Bar-Yosef 10 reported that the agricultural area on which micro-irrigation or drip fertigation is used is expanding almost linearly, particularly in the Far East (China, India, and Japan) and Australia. However, the use of drip fertigation is negligible in developing countries. The drip fertigation system was introduced to many flatland vegetable and/or flower growers in Japan because of its benefits, which include reduced labor for fertilization (or irrigation), decreased irrigation and fertilizer, and reduced cost of fertilizer 1,2. The drip fertiga

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Section: Development Of Drip Fertigation In a Sloping Greenhousementioning

confidence: 99%

“…Higashide et al 5 used dripper lines providing drainage that shut off below a certain pressure, into which check valves were inserted to stop drainage from the lowest line. However, the above-described system was also usable with the dripper (lateral) lines set at contours (Fig.…”

Section: Development Of Drip Fertigation In a Sloping Greenhousementioning

confidence: 99%

Development of a Drip Fertigation System for Protected Horticulture on Sloping Land

Kawashima

2013

JARQ

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“…We had developed and installed a sloped greenhouse and a soilless culture system for sloping land in hilly and mountainous areas of Japan (Nagasaki et al, 2001;Higashide et al, 2005a, b). In summer-fall season, the period of tomato harvesting was extended and an increased yield of tomato was achieved by installing them in those areas (Higashide et al, 2005a(Higashide et al, ,b, 2007. To use the greenhouse and the system all year round, some crops should be introduced during winter.…”

Section: Introductionmentioning

confidence: 99%

Effects of Root-Zone Heating in Early Morning on Celery Growth and Electricity Cost

Kinoshita¹,

Higashide²,

Fujino³

et al. 2008

Acta Hortic.

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We investigated the effects of root-zone heating in early morning to improve the growth of celery and reduce the cost of electricity for root-zone heating during winter in a hilly and mountainous area of Japan. Celery plants were transplanted to a soilless culture system in a sloped greenhouse. Polyethylene bags (30 x 90 cm) filled with bark composts were used as a substrate in the system. We used a heating wire and a thermostat for the root-zone heating. Four heating treatments were set after transplanting: 24h constant heating; CH, early morning (03:00-09:00) heating; MH, daytime (09:00-15:00) heating; DH, and non-heating; NH. The treatments were continued after transplanting through harvesting. The thermostat for root-zone heating was set at 15°C during the heating time. In CH and MH, the fresh weights of plants and the marketable part weights were larger than NH significantly. There were no significant difference in marketable part weights in CH and MH. We thought that MH was more effective in celery growth than other treatments, because the ratio of the difference in marketable part weights (dW) from NH to the diifference in root-zone temperature (dT) from NH was significantly larger than CH and DH. We also thought that maintaining favourable root-zone temperature from the morning to the evening was effective, and that at night was a little effective, in celery growth. The electricity consumption for the root-zone heating in DH was the lowest. However, the electricity cost was the lowest in MH, thanks to the dual fee system for electricity. We consequently concluded that root-zone heating in early-morning was more effective to improve celery growth in winter than constant heating the whole day.

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Light interception by tomato plants (Solanum lycopersicum) grown on a sloped field

Higashide

2009

Agricultural and Forest Meteorology

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Development of a Closed, Cost- and Energy-Saving Hydroponic System for Hillside Tomato Production

Cited by 7 publications

References 3 publications

Development of a Drip Fertigation System for Protected Horticulture on Sloping Land

Development of a Drip Fertigation System for Protected Horticulture on Sloping Land

Effects of Root-Zone Heating in Early Morning on Celery Growth and Electricity Cost

Light interception by tomato plants (Solanum lycopersicum) grown on a sloped field

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