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Advisor(s)
Abstract(s)
The use of organic matter and other soil conditioners can increase the resilience of the
agrosystems to the degradation of plant growth conditions due to global warming. The
problem is particularly important in rainfed orchards, where the extensive summer period
tends to severely hamper tree growth and development and crop productivity. In February
2017 a field trial was installed in Mirandela (NE Portugal) in a traditional olive grove
rainfed managed in which some organic and mineral soil conditioners were used, namely
zeolites, biochar, cow manure and urban solid waste. There were also included a treatment
of mineral fertilization and a non-fertilized control. After two successive harvests, olive
yields varied between 1700 and 2200 kg ha-1 year-1 without significant differences between
treatments. Between years there was observed a slight decrease from the harvests of 2017
to that of 2018. The lack of response to fertilizer treatments in the short-term may be due
to the high volume of soil that a tree exploits and that gives it buffer capacity and to other
environmental constraints increasing experimental variability, such as drought stress that
severely restricts the physiological processes of the trees.
Description
Keywords
Olea europaea Organic amendments Biochar Zeolites Rainfed olive groves Olive yield
Pedagogical Context
Citation
Lopes, João I.; Rodrigues, M.A.; Gonçalves, Alexandre; Pinto, Luis; Martins, Sandra; Moutinho-Pereira, José; Raimundo, Soraia; Arrobas, Margarida; Correia, Carlos M. (2019). Effect of organic amendments and other soil conditioners on olive tree productivity. In VI Jornada Nacional del Grupo de Olivicultura de la SECH. Madrid. ISBN 978-84-948550-6-1
Publisher
Sociedad Española de Ciencias Hortícolas