Publicação

Effect of organic amendments and other soil conditioners on olive tree productivity

Detalhes bibliográficos
Resumo:	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.
Autores principais:	Lopes, João Ilídio
Outros Autores:	Rodrigues, M.A.; Gonçalves, Alexandre; Pinto, Luís; Martins, Sandra; Moutinho-Pereira, José; Raimundo, Soraia; Arrobas, Margarida; Correia, Carlos M.
Assunto:	Olea europaea Organic amendments Biochar Zeolites Rainfed olive groves Olive yield
Ano:	2019
País:	Portugal
Tipo de documento:	documento de conferência
Tipo de acesso:	acesso aberto
Instituição associada:	Instituto Politécnico de Bragança
Idioma:	inglês
Origem:	Biblioteca Digital do IPB

Descrição
Resumo:	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.