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| Titel |
Influence of inorganic and organic amendments in the soil properties and the growth and survival of Olea Europaea var. Sylvestris in the semiarid Mediterranean area |
| VerfasserIn |
Raul Ortega, Isabel Miralles, Manuel Anguita-Maeso, Miguel Domene, Miguel Soriano |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250138877
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| Publikation (Nr.) |
 EGU/EGU2017-2012.pdf |
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| Zusammenfassung |
| Selecting the most appropriate types of plants adapted to the harsh climatic conditions of
restoring drylands is essential to success in landscape restoration. Besides improving soil
quality is a key factor to consider when designing the restoration procedures. The use of
organic and inorganic amendments can help with this task.
On this study, we evaluated the influence of different mineral (clays) and organic (compost
and poultry) amendments on the properties of a bare soil and how this influenced on the
growth and survival of the Olea europaea var. sylvestrys, a perennial bush plant adapted to
the Mediterranean semi-arid zone.
Tests were designed and carried out in a greenhouse at the “Experimental Station of Cajamar
foundation “Las Palmerillas” in El Ejido (Almería, Spain). Plants were grown in 250L
pots and their substrate was bare soil and mineral and/or organic amendments. The
experimental design consisted of three replicas for five treatments: 1. compost, 2.
“ZeoPro”, a cliptonolite commercial clay, 3. mordenite clay from local quarries
plus compost, 4. cliptonolite clay from Turkey plus compost, 5. cliptonolite from
Turquey plus poultry; with four levels each one: 5%, 10%, 20%, 30% volume of
amendment. Including three control samples without amendment total plants accounted for
63.
Climatic sensors inside and outside the greenhouse permitted to establish the same
meteorological conditions for the plants and only emergency watering was supplied when
necessary for the survival of the plants when arid conditions were extreme. The
physico-chemical soil properties of each treatment and level were analyzed before planting
and the biovolume and the survival rates of the plants were measured regularly along eleven
months.
Statistically the best treatment for the growing of the plants was number 3 (mordenite and
compost) with no deaths recorded. According to the growing rates the best level was soil with
20% of amendment. Besides we analyzed the evolution of the plants along the seasons of
the year and we found this plant especially showed good growth rates during the
spring.
In conclusion we found in the semi-arid Mediterranean area soils with best quality for
restoration with Olea Europaea var. Sylvestris can be obtained adding combined
organic (compost) and inorganic (local mordenite clay) amendments in a fifth of soil
proportion.
(*) Financial support by Marie Curie Intra-European Fellowship (FP7-577 PEOPLE-2013-IEF,
Proposal nº 623393) and (**) by the Ministerio de Economía y Competitividad (MINECO)
cofinanced with FEDER funds (project CGL2015-71709-R) is acknowledged. |
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