10
11
the consortium project partners for the record of specific problems and macroscopic investigations.
Through a continuous interaction of local agronomists and project’s scientific specialists, it was
achieved the collection of information and their optimal dissemination as well as the delivery of specific
guidelines and measures to the producers.
Report on the assessment of problems to irrigated soils
Chemical analyses of soils revealed the ongoing problems in some plots of the study areas, in respect
to pH, electrical conductivity (EC) and ESP of irrigated soils. Below are presented some indicative plots
in which there were determined relative problems of acidity and alkalinity in soils and are suggested
potential solutions
Area of Chora Trifilias
In table 1 are displayed 6 plots (olive groves) with acidity problems in soils (pH ranges between 4.7 –
5.9). Acidity in soils causes serious problems in the developed crops, like:
n
Increment of Al, Fe, and Mn concentrations in crops which may reach toxic levels.
n
Increment of Al concentration in soils which may reach toxic levels and affect the microbial activity
(dominance of fungus towards nitrifying and symbiotic bacteria)
n
Decrement and inhibition of plant system growth
Assessment of irrigation water samples and suggestions for
rational management of irrigation water resources
Risk of detrital impacts on soils and crops
The risk of soil salinity caused by irrigation water is low and may be further reduced when soil receives
satisfying amounts of precipitation or sufficient doses of irrigation water and soil drainage is good. It is
recommended the frequent monitoring of electrical conductivity. The salinity of irrigation water does
not affect the intake of soil solute from the root system of olive trees and therefore is not expected any
reduction in the total crop yield.
Figure 1: Toxic risk of Na in soil samples
of Nileas study area (2011)
Risc of saline soils due to the use of saline irrigation waters at the plots of Nileas study area
(sampling of 2011)
19%
81%
