Dynamic distribution of thermal effects of an oscillating frost protective fan in a tea field

Kimura, Kensuke; Yasutake, Daisuke; Nakazono, Kou; Kitano, Masaharu

doi:10.1016/j.biosystemseng.2017.09.010

Cited by 19 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Kitaya et al (2003) reported that gas exchange in sweet potato leaves was strongly limited by boundary layer conductance when the wind speed was less than 0.2 m s -1 . In addition, as lower boundary layer conductance limits heat exchange of the leaf surface, leaf-to-air temperature difference would be larger when boundary layer conductance is small (Kimura et al 2017). These findings show that if the boundary layer conductance is low during the daytime, it would affect photosynthesis, both directly and indirectly, by acting as resistance to gas exchange and by increasing leaf temperature.…”

Section: Diurnal Variations In Photosynthetic Limiting Factorsmentioning

confidence: 79%

Diurnal changes in the stomatal, mesophyll, and biochemical limitations of photosynthesis in well-watered greenhouse-grown strawberries

Yokoyama¹,

ONO²,

Yasutake³

et al. 2023

Photosynt.

View full text Add to dashboard Cite

show abstract

Section: Diurnal Variations In Photosynthetic Limiting Factorsmentioning

confidence: 79%

Diurnal changes in the stomatal, mesophyll, and biochemical limitations of photosynthesis in well-watered greenhouse-grown strawberries

Yokoyama¹,

ONO²,

Yasutake³

et al. 2023

Photosynt.

View full text Add to dashboard Cite

show abstract

“…In tea fields, frost protective fans are usually operated to prevent frost damage Kimura et al, 2017 . The frost protective fan mitigates temperature inversion on radiative frost nights and increases the surface temperature of tea plants, probably leading to some temperature difference between a meteorological station and an actual tea field.…”

Section: Limitations Of This Studymentioning

confidence: 99%

“…Tea plants are cultivated in a wide range of regions, from plains to mountains, and frost risks vary in space and time at different scales in different species Bennie et al, 2010;Vitasse et al, 2018 . Thus, the spatial variability of frost risk should be assessed in terms of reasonable strategies for the application of frost protection e.g., frost protective fan, Kimura et al, 2017;and sprinkler, Suzuki et al, 1993 across a wide range of regions and for a long period under future warming climate.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal distribution of the potential risk of frost damage in tea fields from 1981-2020: A modeling approach considering phenology and meteorology

Kimura

Kudo

Maruyama

2021

J. Agric. Meteorol.

Self Cite

View full text Add to dashboard Cite

Climate change may induce severe frost damage to crops, and thus a reasonable assessment of frost risk, considering both crop phenology and meteorology, is required. Here, we introduced a new index of potential frost risk F risk using thermal time minimum air temperature below the threshold value weighted by the percentage of budburst P bud . Moreover, we evaluated the spatiotemporal distributions of F risk in tea fields within a 60 km 60 km area in east Japan from 1981-2020, using 1 km 2 -gridded meteorological data and a newly developed model of P bud . The P bud model considered three phenological phases endodormancy, ecodormancy, and progress of budburst and successfully represented changes in the P bud of the tea buds for 15 years, with root mean square errors of 8.5 percentage points. The spatiotemporal distributions of F risk over the past 40 years showed that potential frost risk significantly increased at elevations ranging from 50 m to 300 m because the budburst advanced at a faster rate than the temperature warming. These elevations corresponded to areas where tea plants were mainly cultivated, which indicates that tea cultivation is becoming vulnerable to frost, and the risk of economic losses due to the frost is increasing. The proposed assessment of frost risk could contribute to predicting frost damage and developing more reliable strategies for the operation of frost protection under the effects of future climate change.

show abstract

“…Kensuke Kimura et al [80] designed a thermocouple leaf temperature sensor in order to study the temporal and spatial distribution of leaf heat under frost protection in tea gardens. The sensor is shaped like a real plant leaf and is made of smooth brass plates.…”

Section: Pyroelectric Detectionmentioning

confidence: 99%

A Review of Methods and Techniques for Detecting Frost on Plant Surfaces

Song

et al. 2021

Agriculture

View full text Add to dashboard Cite

Severe frost usually has adverse impacts on agricultural production, resulting in crop freeze injury, poor crop yield, and crop quality reduction. Timely and accurate detection of frost plays an important role in cold damage warnings, prevention, and control. Current frost detection methods mostly use physical properties such as light, electricity, and heat, or the judge and quantify using environmental factors such as temperature and wind speed. However, it is difficult to detect and accurately identify the frosting phenomenon in real time during field trials because of the complex environment, different plant types, and interference by many factors during observation. To provide an overview of the analytical tools for scientists, researchers, and product developers, a review and comparative analysis of the available literature on frost mechanisms, correlations, and characteristics are presented in this study. First, the mechanisms of the frost formation process, frost level, and the significance of detection, are introduced. Then, the methods and techniques used to measure frost on plant surfaces are synthetically classified and further compared. Moreover, the key points and difficulties are summarized and discussed. Finally, some constructive methods of frost detection are proposed to improve the frost detection process.

show abstract

Dynamic distribution of thermal effects of an oscillating frost protective fan in a tea field

Cited by 19 publications

References 26 publications

Diurnal changes in the stomatal, mesophyll, and biochemical limitations of photosynthesis in well-watered greenhouse-grown strawberries

Diurnal changes in the stomatal, mesophyll, and biochemical limitations of photosynthesis in well-watered greenhouse-grown strawberries

Spatiotemporal distribution of the potential risk of frost damage in tea fields from 1981-2020: A modeling approach considering phenology and meteorology

A Review of Methods and Techniques for Detecting Frost on Plant Surfaces

Contact Info

Product

Resources

About