Valuation of Climate Performance of a Low-Tech Greenhouse in Costa Rica

Rojas-Rishor, Adriana; Flores, Jorge; Villagrán, Edwin; Aguilar-Rodríguez, Cruz Ernesto

doi:10.3390/pr10040693

Cited by 7 publications

(4 citation statements)

References 33 publications

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“…Since excessive heat or humidity can cause widespread plant damage, controlling and monitoring the environment in a glasshouse is essential [83,84]. However, due to their negative effects on plant growth and development, fluctuations in ambient temperature and RH are detrimental during acclimatization [85,86].…”

Section: Discussionmentioning

confidence: 99%

Design and Evaluation of a Smart Ex Vitro Acclimatization System for Tissue Culture Plantlets

2022

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One of the technological advancements in agricultural production is the tissue culture propagation technique, commonly used for mass multiplication and disease-free plants. The necessity for date palm tissue culture emerged from the inability of traditional propagation methods’ offshoots to meet the immediate demands for significant amounts of planting material for commercial cultivars. Tissue culture plantlets are produced in a protected aseptic in vitro environment where all growth variables are strictly controlled. The challenges occur when these plantlets are transferred to an ex vitro climate for acclimatization. Traditional glasshouses are frequently used; however, this has substantial mortality consequences. In the present study, a novel IoT-based automated ex vitro acclimatization system (E-VAS) was designed and evaluated for the acclimatization of date palm plantlets (cv. Khalas) to enhance their morpho-physiological attributes and reduce the mortality rate and the contamination risk through minimal human contact. The experimental findings showed that the morpho-physiological parameters of 6- and 12-month-old plants were higher when acclimatized in the prototype E-VAS compared to the traditional glasshouse acclimatization system (TGAS). The maximum plant mortality percentage occurred within the first month of the transfer from the in vitro to ex vitro environment in both systems, which gradually declined up to six months; after that, no significant plant mortality was observed. About 6% mortality was recorded in E-VAS, whereas 18% in TGAS within the first month of acclimatization. After six months of study, an overall 14% mortality was recorded in E-VAS compared to 41% in TGAS. The proposed automated system has a significant potential to address the growing demand for the rapid multiplication of tissue culture-produced planting materials since the plant survival rate and phenotype quality were much higher in E-VAS than in the conventional manual system that the present industry follows for commercial production.

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Section: Discussionmentioning

confidence: 99%

Design and Evaluation of a Smart Ex Vitro Acclimatization System for Tissue Culture Plantlets

2022

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“…The result was that with the proposed thermal system, the VPD could be indirectly controllable by controlling the temperature and humidity variables. In another research presented by Rojas-Rishor [18], the behavior of temperature and humidity in a low-tech greenhouse was studied. Moreover, many researchers reported control systems to achieve desired VPD values in greenhouses [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Serrano Pepper Crops Growth under Controlled Conditions of Vapor Pressure Deficit in a Pilot-Scale Hydroponic Greenhouse

Barreto-Salazar,

Rochín-Medina,

Rubio-Astorga

et al. 2023

Processes

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Controlled Environment Agriculture (CEA) has become an important field of study in recent years. The objective of this research is to evaluate the growth rate of the serrano pepper crop under controlled conditions of vapor pressure deficit in a pilot-scale hydroponic greenhouse. The controlled conditions were generated with the development of a control system composed of a non-mixed crossflow heat exchanger for internal temperature and a humidification system for internal humidity control. The comparison of variables and the growth rate of the crop was carried out in a controlled and a timed greenhouse. The best growth rate for serrano pepper cultivation was obtained under the following conditions: between 4.14 and 5.42 kPa with 0.251 and 0.225 cm/day in the controlled greenhouse. The results show that it is possible to obtain higher crop growth rates by controlling the vapor pressure deficit in a pilot-scale hydroponic greenhouse, using a heat exchanger for temperature control and a humidification control system. Controlling vapor pressure deficit can be a useful tool for agriculture in CEA.

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“…Worldwide, there are more than 5.2 million hectares covered with different types of protective agriculture structures [ 3 , 4 ]. These structures present different technological levels, from a low technological level, such as that found in the small tunnels or structures typically used in tropical countries of Latin America and Asia [ 5 ], to an extremely high level, such as that found in the high-tech greenhouses found mainly in northern European countries, where it is possible to fully manage the variables that affect crop growth and development [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Microclimatic Evaluation of Five Types of Colombian Greenhouses Using Geostatistical Techniques

Villagrán

Flores²,

Akrami

et al. 2022

Sensors

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In Colombia, the second-largest exporter of cut flowers worldwide and one of the South American countries with the largest area of crops under cover, passive or naturally ventilated greenhouses predominate. Locally, there are several types of greenhouses that differ in architecture, size, height, shape of roof and ventilation surfaces, of which many characteristics of the microclimate generated in their interior environment are unknown. This generates productive limitations that in some way may be limiting the yield, quality and health of the final products harvested; in addition, Colombian producers do not have the ability to monitor the microclimate of their farms, much less to correlate microclimate data with data on crop production and yield. Therefore, there is a need for the Colombian grower to know the most relevant microclimate characteristics generated in the main greenhouses used locally. The objective of this work was to carry out a microclimatic characterization of the five most used types of greenhouses in Colombia. The main results allowed determining that in these structures, there are conditions of high humidity and low vapor pressure for several hours of the day, which affects the physiological processes of growth and development of the plants. It was also identified that for each type of greenhouse, depending on the level of radiation, there is a significant microclimatic heterogeneity that may be the cause of the heterogeneity in plant growth, which is a common characteristic observed by the technical cultivation personnel. Therefore, it can be concluded that it is urgent to propose microclimatic optimization strategies to help ensure the sustainability of the most important production systems in the country.

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Valuation of Climate Performance of a Low-Tech Greenhouse in Costa Rica

Cited by 7 publications

References 33 publications

Design and Evaluation of a Smart Ex Vitro Acclimatization System for Tissue Culture Plantlets

Design and Evaluation of a Smart Ex Vitro Acclimatization System for Tissue Culture Plantlets

Evaluation of Serrano Pepper Crops Growth under Controlled Conditions of Vapor Pressure Deficit in a Pilot-Scale Hydroponic Greenhouse

Microclimatic Evaluation of Five Types of Colombian Greenhouses Using Geostatistical Techniques

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