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Optimization and Water Treatment Str...

Putri, Ferisca Eddy.

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Optimization and Water Treatment Strategies for Nursery Production in Soilless Culture Systems.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Optimization and Water Treatment Strategies for Nursery Production in Soilless Culture Systems./
Author:	Putri, Ferisca Eddy.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
Description:	103 p.
Notes:	Source: Masters Abstracts International, Volume: 81-10.
Contained By:	Masters Abstracts International81-10.
Subject:	Agricultural engineering. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=13420681
ISBN:	9781658412261

Optimization and Water Treatment Strategies for Nursery Production in Soilless Culture Systems.
Putri, Ferisca Eddy.

Optimization and Water Treatment Strategies for Nursery Production in Soilless Culture Systems. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 103 p.

Source: Masters Abstracts International, Volume: 81-10.

Thesis (M.S.)--University of California, Davis, 2019.

This item must not be sold to any third party vendors.

Ferisca Eddy PutriDecember 2019Biosystem EngineeringCitrus nursery production in California has to be conducted inside a protective structure, such as a screenhouse, as a measure against citrus greening disease. However, the presence of screens restricts air movement inside the structure and creates a non-ideal condition for a rapid vegetative growth. In the first part of the study, several operational strategies were tested, and their effects on the plant growth were evaluated to determine the optimal conditions for growing newly grafted Tango mandarin trees (Citrus reticulata Blanco) inside a screenhouse using a soilless culture system. An evapotranspiration model for plants inside a screenhouse was developed to understand the water usage inside the screenhouse and to assist with irrigation management for the conservation of water. The results showed that increasing shade intensity increased the length of scion length. Moreover, coconut coir was found to be a more suitable growing substrate compared to commercial citrus mix due to its superior performance under drought conditions and ability to produce plants with bigger trunk diameter. Furthermore, recirculating nutrient solution was encouraged since the practice did not cause any detrimental effect on the plants and could save up to 0.92 L of water per plant daily during hot summer months. Nonetheless, when recirculating soilless culture system was to be implemented, there would be accumulation of salts and nutrients in the recirculated solution that need to be treated before being released to the environment. Therefore, in the second part of the study, macrophytes and microalgae were used to remove the excess nutrient in the wastewater from the system. The study found that common duckweed (Lemna minor) outperformed commonly used microalgae (Chlorella vulgaris and Scenesdesmus quadricauda) in terms of nutrient uptake efficiency and biomass yield. Since duckweed was preferred over the microalgae, their growth was further investigated and modelled to provide recommendations to future management practices.

ISBN: 9781658412261Subjects--Topical Terms:

3168406
Agricultural engineering.
Subjects--Index Terms:

Citrus

Optimization and Water Treatment Strategies for Nursery Production in Soilless Culture Systems.
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500 $a Source: Masters Abstracts International, Volume: 81-10.
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520 $a Ferisca Eddy PutriDecember 2019Biosystem EngineeringCitrus nursery production in California has to be conducted inside a protective structure, such as a screenhouse, as a measure against citrus greening disease. However, the presence of screens restricts air movement inside the structure and creates a non-ideal condition for a rapid vegetative growth. In the first part of the study, several operational strategies were tested, and their effects on the plant growth were evaluated to determine the optimal conditions for growing newly grafted Tango mandarin trees (Citrus reticulata Blanco) inside a screenhouse using a soilless culture system. An evapotranspiration model for plants inside a screenhouse was developed to understand the water usage inside the screenhouse and to assist with irrigation management for the conservation of water. The results showed that increasing shade intensity increased the length of scion length. Moreover, coconut coir was found to be a more suitable growing substrate compared to commercial citrus mix due to its superior performance under drought conditions and ability to produce plants with bigger trunk diameter. Furthermore, recirculating nutrient solution was encouraged since the practice did not cause any detrimental effect on the plants and could save up to 0.92 L of water per plant daily during hot summer months. Nonetheless, when recirculating soilless culture system was to be implemented, there would be accumulation of salts and nutrients in the recirculated solution that need to be treated before being released to the environment. Therefore, in the second part of the study, macrophytes and microalgae were used to remove the excess nutrient in the wastewater from the system. The study found that common duckweed (Lemna minor) outperformed commonly used microalgae (Chlorella vulgaris and Scenesdesmus quadricauda) in terms of nutrient uptake efficiency and biomass yield. Since duckweed was preferred over the microalgae, their growth was further investigated and modelled to provide recommendations to future management practices.
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