CBL - Campus del Baix Llobregat

Projecte llegit

Títol: Estudi de sustrats alternatius a la torba en cultiu ecològic en contenidor de Lavandula officinalis

Estudiant que ha llegit aquest projecte:

Tutor/a o Cotutor/a: CARAZO GOMEZ, NURIA

Departament: DEAB

Títol: Estudi de sustrats alternatius a la torba en cultiu ecològic en contenidor de Lavandula officinalis

Data inici oferta: 06-07-2022      Data finalització oferta: 06-10-2022

Estudis d'assignació del projecte:
    GR ENG CIEN AGRONOM

Lloc de realització:
EEABB

Paraules clau:
ecològic sustrats Lavandula

Descripció del contingut i pla d'activitats:
S'estudiarà el comportament de Lavandula officinalis en substrats
alternatius a la torba. Es valoraran diferents paràmetres de
desenvolupament i fisiològics, així com del medi de cultiu.

Overview (resum en anglès): Peatlands are natural wetlands of significant importance for mitigating the effects of climate change. Blonde peat is the most widely used in the agricultural sector due to its physical and chemical characteristics, but it has also been used as a fuel, which has led to the uncontrolled exploitation of peatlands, and together with their slow natural formation, these practices represent an important source of greenhouse gases.
This work, carried out within the framework of the ORGANIC-PLUS project Pathways to phase-out contentious inputs from organic agriculture in Europe, at the IRTA Cabrils facilities, evaluates the use of compost based on Shredded Pine Biomass (SPB) and Horse Manure (HM), in different proportions, to obtain the most suitable product for the development of the plant, in this case Lavandula angustifolia.
The substrates evaluated were PO1 (77% SPB - 23% HM) and PO3 (42% SPB - 58% HM). They were compared with a commercial peat-based substrate, Bioverde Brill (70% peat). In addition, a fertiliser approved for application in organic farming, DCM ECOMIX 4 (7-7-10), and a product obtained from the treatment of wastewater in municipal wastewater treatment plants called struvite (rich in phosphorus, 12% P) were used.
The trial ran from February to August 2021. During this period, irrigation, the volume of leachate generated, and its chemical parameters (electrical conductivity, pH, nitrates, ammonium, and phosphorus) were monitored on a weekly basis. Agronomic parameters such as height, chlorophyll levels, specific weight and plant biomass were also monitored.
With the results obtained, together with the statistical analysis of these results, it was concluded that it is possible to obtain a compost-based substrate from local by-products, based on residual forest biomass, but it is necessary to co-compost it with other by-products rich in N. Furthermore, it highlights the need to study the use of locally generated fertilisers, also to show the effectiveness of alternative substrates; in this case, struvite is a fertiliser with potential for use in soilless crops, even for organic horticulture.


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