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Farm area/size of the organisation:
Number of workers:
Farm main activity:
Jaén countryside, clay soils. Hot summers and dry winters. Rainfall of less than 400mm/year.
Irrigation from the Guadalquivir River, through the Santa María Magdalena irrigation community, with water intake in Mengibar. There are 10.89 km to the river with a reservoir at Pozo Pimiento after 2 pumping points.
Change from rainfed to in-ground irrigation strips with integrated drippers.
Drippers are spaced 1.3 m apart and buried 20 cm deep, with flow rates of 1.6 liters/hour.
The pipes are 16 mm buried on both sides of the olive tree lines. The olive trees are composed by several trunks with an increased water requirement; this measure guarantees water in all the root network of the olive tree.
Both ends of the bands are connected to 32 mm pipes to guarantee supply even in case of pinching or breakage of a line.
In addition, an irrigation head has been created from which fertigation is carried out with an automated system.
Land with a good retention capacity, it was intended to use 100% of the irrigation water to reduce evapotranspiration, for which it was decided to use underground irrigation.
To take advantage of water between rows, an olive tree was planted between the tree line, (switching from 10m x 10m to 5m x 10m frame).
The irrigation community brings water from the Guadalquivir River (10 km of distance), with two pumping systems to two reservoirs, irrigation is carried out at a pressure of 10 bar, which is regulated on the plot at 1.8 bar.
The installation was carried out with a shovel and a mole, it has a container where all the electrical equipment, filters and fertiliser injection system are located. In addition, solar energy is used to manage the electronic equipment (automatons).
Automatic filter cleaning is carried out, but filter and end-of-line cleaning is done manually every year.
The fertiliser used is acid reaction, which avoids precipitates and blockages.
The 16 mm pipe joints are checked, as there may be 2-3 breaks per year due to pressure.
The automation using solar energy, this system allows the opening of sectors, filter cleaning and irrigation injection automatically.
Another innovative element has been the closing of the circuit by connecting the two ends of the 16 mm pipe to the 32 mm pipe, which guarantees a continuous system with stable pressures even in the event of rubber pinching.
The design is fundamental, trying to optimise water to the size of the plot.
The use of automatisms and regulators that facilitate handling and minimise the need for manual labour.
The plot is very long and narrow with little slope, but to have the same pressure in high and low parts, they have had to sectorise with 2 irrigation sectors.
The distance to the river, 10 km, makes it necessary to manage the water supply through an irrigation community that carries out the pumping and storage of water in reservoirs.
The correct description of the benefits obtained can reduce acceptance constraints.
Regarding the lack of access to water resources, they justify access to irrigation communities, despite the high cost of accessing them.
The farmer is very satisfied, although in order not to lose water he recommends increasing the planting density (in his case they switch from 10×10 to 10×5 plantation frame).
In this case, they had to install surface drippers to be able to water the new plants, whose roots did not reach the wet areas.
The use of buried strips is an increasingly widespread system that ensures the best use of water, especially in regions with high evapotranspiration.
The design, maintenance and optimisation of the system is essential to achieve this objective.
The slope, soil type and planting density are aspects that must be taken into consideration to avoid problems or poor use of the entire wet band obtained with this system.
The use of suction cups is necessary to avoid suction of the system and obstruction of drippers for this reason.
The possibility of pinching due to soil displacement or works, makes it advisable to use a double band of constant flow (with the ends connected).
AGRIWATER project has been funded with the support from the European Commission, with the reference number 2020-1-CZ01-KA204-078212. The content of this website reflects the views only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.
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