Today's agriculture must face new challenges in the management of resources by seeking maximum efficiency of inputs and maximum production, also paying particular attention to the quality of production and above all to the environmental sustainability of production. This study aims to deepen some aspects of ethnic vegetables. In particular, it contains the study of a soilless cultivation of pak-choi cabbage, with the use of compost-tea in which the benefits and limitations found in its use were analyzed, in a trial carried out at the "Lucio Toniolo" agricultural experimental farm of the University of Padua. The test was carried out in an NFT Nutrient Film Technique soilless plant, characterized by the continuous recirculation of the nutrient solution inside independent tanks. The pipes were divided into 12 independent systems, each consisting of 3 pipes, for a total of 120 stations per system. The experimental design followed a complete randomized block scheme (RCBD), divided into 3 blocks. The four treatments were: (CTR) the control where only chemical fertilizers were used, (CTC) compost tea corrected with chemical fertilizers, (CTE) compost tea as is, (CTCJ) compost tea corrected with ionized insufflated air. The parameters, measured on a regular basis, included the electrical conductivity (EC), pH and temperature of the nutrient solution, in order to ensure optimal conditions for the vegetative development of the pak-choi cabbage. The test gave interesting results in cases of compost tea corrected with chemical fertilizers, even if made with urban green waste, therefore quite poor and unbalanced in nutrients for pak-choi cabbage plants. The experimental study was accompanied by careful research in today's literature on the effects and benefits of ethnic vegetables, in particular pak-choi cabbage, on the effects of soilless cultivation with the use of compost-tea, to understand in which cases the most satisfactory results can be obtained, which can be the best starting compost to have a compost tea that can best meet the needs of plants, or how to correct it with chemical fertilizers to have the best results in the growth and maturation of plants.
L’agricoltura odierna deve affrontare nuove sfide nella gestione delle risorse cercando la massima efficienza degli input e la massima produzione ponendo anche una particolare attenzione alla qualità della produzione e soprattutto alla sostenibilità ambientale delle produzioni. Questo studio vuole approfondire alcuni aspetti degli ortaggi etnici. In particolare, contiene lo studio di una coltivazione fuori suolo di cavolo pak-choi, con l’impiego di compost-tea nel quale sono stati analizzati i benefici e i limiti riscontrabili nel suo impiego, in una prova effettuata presso l’azienda sperimentale agraria “Lucio Toniolo” dell’Università di Padova. La prova è stata eseguita in un impianto fuori-suolo NFT Nutrient Film Technique, caratterizzato dal ricircolo continuo della soluzione nutritiva all’interno di vasche indipendenti. I tubi sono stati suddivisi in 12 sistemi indipendenti, ciascuno composto da 3 tubi, per un totale di 120 postazioni per sistema. Il disegno sperimentale ha seguito uno schema a blocchi randomizzati completi (RCBD), articolato in 3 blocchi. I quattro trattamenti sono stati: (CTR) il controllo dove sono stati utilizzati unicamente i concimi chimici, (CTC) compost tea corretto con concimi chimici, (CTE) compost tea tal quale, (CTCJ) compost tea corretto con aria insufflata ionizzata. I parametri, rilevati con frequenza regolare, includevano la conducibilità elettrica (EC), il pH e la temperatura della soluzione nutritiva, al fine di garantire condizioni ottimali per lo sviluppo vegetativo del cavolo pak-choi. La prova ha dato risultati interessanti nei casi di compost tea corretto con concimi chimici, anche se realizzato con scarti verdi urbani, quindi abbastanza povero e sbilanciato di elementi nutritivi per le piante di cavolo pak-choi. Lo studio sperimentale è stato accompagnato da un’accurata ricerca nella letteratura odierna sugli effetti e i benefici degli ortaggi etnici, in particolare del cavolo pak-choi, sugli effetti della coltivazione fuori-suolo con l’utilizzo del compost-tea, per capire in quali casi si possono ottenere i risultati più soddisfacenti, quali possono essere i compost di partenza migliori per avere un compost tea che possa soddisfare al meglio i fabbisogni delle piante, oppure come correggerlo con concimi chimici per avere i migliori risultati nella crescita e maturazione delle piante.
Impiego del compost tea nella coltivazione fuori suolo di cavolo pak-choi [Brassica rapa L. (Chinensis Group)]
ZANDONÀ, PIETRO
2024/2025
Abstract
Today's agriculture must face new challenges in the management of resources by seeking maximum efficiency of inputs and maximum production, also paying particular attention to the quality of production and above all to the environmental sustainability of production. This study aims to deepen some aspects of ethnic vegetables. In particular, it contains the study of a soilless cultivation of pak-choi cabbage, with the use of compost-tea in which the benefits and limitations found in its use were analyzed, in a trial carried out at the "Lucio Toniolo" agricultural experimental farm of the University of Padua. The test was carried out in an NFT Nutrient Film Technique soilless plant, characterized by the continuous recirculation of the nutrient solution inside independent tanks. The pipes were divided into 12 independent systems, each consisting of 3 pipes, for a total of 120 stations per system. The experimental design followed a complete randomized block scheme (RCBD), divided into 3 blocks. The four treatments were: (CTR) the control where only chemical fertilizers were used, (CTC) compost tea corrected with chemical fertilizers, (CTE) compost tea as is, (CTCJ) compost tea corrected with ionized insufflated air. The parameters, measured on a regular basis, included the electrical conductivity (EC), pH and temperature of the nutrient solution, in order to ensure optimal conditions for the vegetative development of the pak-choi cabbage. The test gave interesting results in cases of compost tea corrected with chemical fertilizers, even if made with urban green waste, therefore quite poor and unbalanced in nutrients for pak-choi cabbage plants. The experimental study was accompanied by careful research in today's literature on the effects and benefits of ethnic vegetables, in particular pak-choi cabbage, on the effects of soilless cultivation with the use of compost-tea, to understand in which cases the most satisfactory results can be obtained, which can be the best starting compost to have a compost tea that can best meet the needs of plants, or how to correct it with chemical fertilizers to have the best results in the growth and maturation of plants.| File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/88186