Effect of Cooling of Medium on Fruit Set in High-bench Strawberry Culture

Ikeda, Takashi; Yamazaki, Keisuke; Kumakura, Hiroshi; Hamamoto, Hiroshi

doi:10.21273/hortsci.42.1.88

Cited by 16 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because it is difficult to spray fungicides on fruits inside the device structure, additional measures may be necessary to prevent the occurrence of the disease. Although there is knowledge of the local temperature control in the root zone (Ikeda et al, 2007) and crown (Dan et al, 2015;Hidaka et al, 2017) of strawberry plants, there are little to no reports on the fruit. Indeed, there are only basic studies on local temperature control using tomatoes (Fanwoua et al, 2012) and apples (Yamada et al, 2004).…”

Section: Discussionmentioning

confidence: 99%

Effect of Local Temperature Control on Fruit Maturation and Quality in Strawberry ‘Koiminori’

KAWASAKI,

NAITO,

LEE

et al. 2024

Environmental Control in Biology

View full text Add to dashboard Cite

To control the harvest date of strawberries, we constructed a device that can control the local fruit temperature and investigate the effects of fruit cooling and heating on fruit maturation and quality. Fruits were sequentially placing into thermally insulated tubs to control the local temperature during fruit development. The average fruit temperature decreased by 4.1℃ during fruit cooling and increased by 3.8℃ during fruit heating when compared with fruit without local temperature control. The number of days from flowering to harvest (i.e., days to maturation) was strongly affected by fruit temperature, with fruit cooling prolonging and fruit heating shortening the days to maturation when compared to the control. Non-linear regression analysis revealed two regression formulas for predicting days to maturation from the average fruit temperature. When compared to the fruit without local temperature control, fruit size, soluble solids content and dry matter ratio decreased significantly with fruit heating, while in contrast, no differences were observed for these quality parameters with fruit cooling.

show abstract

Section: Discussionmentioning

confidence: 99%

Effect of Local Temperature Control on Fruit Maturation and Quality in Strawberry ‘Koiminori’

KAWASAKI,

NAITO,

LEE

et al. 2024

Environmental Control in Biology

View full text Add to dashboard Cite

show abstract

“…Local cooling techniques have been developed to stabilize strawberry flowering and fruit production in the hot season. Latent-heat cooling of the growth medium in a high-bench culture system during early autumn accelerated flower bud emergence of the first lateral flower cluster in the forcing culture of a June-bearing cultivar (Ikeda et al, 2007). Crown cooling with chilled water flow from summer to autumn promoted flowering of both everbearing (Oowashi et al, 2014) and June-bearing (Dan et al, 2015;Hidaka et al, 2017) strawberry cultivars, and thus impacted fruit yield.…”

Section: Introductionmentioning

confidence: 99%

Effects of Root-zone Cooling with Short-day Treatment in Pot-grown Strawberry (<i>Fragaria</i> × <i>ananassa</i> Duch.) Nurseries on Flowering and Fruit Production

et al. 2022

View full text Add to dashboard Cite

We applied the New Root-zone Environmental Control System (N.RECS), which comprises floor heating panels with chilled or heated water flow and heat-insulating pot trays, to cool the root zone of pot-grown strawberry (Fragaria × ananassa Duch.) nurseries in late summer, and investigated the effects on the subsequent flowering and yield in a super-forcing culture. Cooling at around 20°C with short-day (8-h daylength) treatment for 22 days accelerated and stabilized the flower bud formation of two June-bearing cultivars, 'Nyoho' and 'Tochiotome'. The temperature at the soil surface, where the crown is located, was around 23°C on average during root-zone cooling, possibly acting as a cold stimulus on the shoot apical meristem, which initiated flowering. Root-zone cooling did not affect the development of new leaves during treatment. Combined root-zone cooling with short-day treatment promoted anthesis of the first inflorescence to the same degree as conventional night cooling, but neither did so alone. Weight-based early marketable yield before December was doubled but the total yield during October to March was not increased. These data suggest that root-zone cooling with short-day treatment of June-bearing strawberries may be applicable for super-forcing culture harvested from October to mid-November.

show abstract

“…One important factor necessary for efficient cooling of a greenhouse is minimization of the volume that must be cooled. Spot cooling, which is used primarily in bench cultivation practices, has recently become popular in Japan as a means of increasing energy efficiency (Ikeda et al, 2007;Yamasaki, 2013 temperature affects the quality and yield of strawberry fruit. Geater et al (1997) reported that a constant, high root-zone temperature on the order of 35°C in a hydroponic system reduces the root dry weight whereas the greatest fresh weight is yielded under conditions corresponding to a constant temperature of 23°C.…”

mentioning

confidence: 99%

Root-zone Cooling Evaluation Using Heat Pump for Greenhouse Strawberry Production

Moritani

Nanjo

Atsushi

et al. 2018

hortte

View full text Add to dashboard Cite

Ground-source heat pumps (GSHPs) have been used to chill water to facilitate cooling of ‘Natsuakari’ strawberry (Fragaria ×ananassa) grown within containers during the summer. Two types of soil containers and cooling systems have been considered. In one system, cold-water tubes were placed under as well as over the top of the soil, whereas the other cooling system used cold water passing through tubes placed under the soil and within the irrigation channel to facilitate bottom irrigation. The cooling efficiency of each system was evaluated by observing temperature relationships between greenhouse air and soil. The relationship was represented by means of an elliptic curve, the geometric center and tilt angle of which indicated representative daily soil temperatures and degree of temperature stability, respectively. Both values were observed to be lower for the bottom irrigation system during the two plant growth periods considered in this study, thereby indicating that colder and relatively constant soil temperatures can be maintained via greater heat convection. This greater cooling method was facilitated by rapid transfer of cold water through the bottom irrigation channel into the root zone, resulting from reduction in soil moisture content induced by plant transpiration in addition to heat conduction from the soil to the cooling tube. Measured soil temperatures for the buried-tube system were observed to be coldest when the tube was chilled considerably (9.4 °C). Although the setup of the considered bottom watering system was rather sensitive in that the system required maintenance of a constant water level throughout the container, both systems effectively produced cooler soil temperatures compared with the case in which no GSHP was used.

show abstract

Effect of Cooling of Medium on Fruit Set in High-bench Strawberry Culture

Cited by 16 publications

References 9 publications

Effect of Local Temperature Control on Fruit Maturation and Quality in Strawberry ‘Koiminori’

Effect of Local Temperature Control on Fruit Maturation and Quality in Strawberry ‘Koiminori’

Effects of Root-zone Cooling with Short-day Treatment in Pot-grown Strawberry (<i>Fragaria</i> × <i>ananassa</i> Duch.) Nurseries on Flowering and Fruit Production

Root-zone Cooling Evaluation Using Heat Pump for Greenhouse Strawberry Production

Contact Info

Product

Resources

About