Differentiation of the irrigation regime on soils with groundwater supply from dammed river plain

Year 2018, 1. Uluslararası Tarımsal Yapılar ve Sulama Kongresi Özel Sayısı, 173 - 182, 31.12.2018

İoan Vısınescu Marcel Bularda Daniela Trıfan

Abstract

The soils from dammed meadow present a groundwater reservoir at low
depths on much of the territory, giving plants a consistent supply of water
raised by capillarity. The volume of groundwater intake differs according to a
complex of conditions: depth of ground water level, soil texture, crop, the
vegetation stage of the plant. Experimental determinations, performed on physical
models (lysimeters) and in the field, in dammed meadow Big Island of Braila, established
the parameters of the phreatic input, for the main agricultural crops,
remarkable useful in the management of irrigation. The irrigation regime in the
meadow is applied differentially referring to the number of watering, the
watering norms, the interval between watering, depending on the hydrogeological
framework. Thus, at the depths of groundwater below 1 m, the crops do not
irrigate, at 1.5 m depths apply 1-2 waterings with norms of 500-600 m3
/ ha, at depths of 2 m apply 2-3 waterings and at depths larger than 2.5-3 m
apply 3-4 waterings. In the paper are presented the experimental results
obtained that have grounded the technology of differential application irrigation
on the meadow soils of the Big Island of Braila, with an area of​ 72.000
hectares.

Keywords

groundwater, irrigation scheduling, hydroameliorative arrangements

Differentiation of the Irrigation Regime on Soils with Groundwater Supply from Dammed River Plain

Abstract

The soils from dammed meadow present a groundwater reservoir at low
depths on much of the territory, giving plants a consistent supply of water
raised by capillarity. The volume of groundwater intake differs according to a
complex of conditions: depth of ground water level, soil texture, crop, the
vegetation stage of the plant. Experimental determinations, performed on physical
models (lysimeters) and in the field, in dammed meadow Big Island of Braila, established
the parameters of the phreatic input, for the main agricultural crops,
remarkable useful in the management of irrigation. The irrigation regime in the
meadow is applied differentially referring to the number of watering, the
watering norms, the interval between watering, depending on the hydrogeological
framework. Thus, at the depths of groundwater below 1 m, the crops do not
irrigate, at 1.5 m depths apply 1-2 waterings with norms of 500-600 m3
/ ha, at depths of 2 m apply 2-3 waterings and at depths larger than 2.5-3 m
apply 3-4 waterings. In the paper are presented the experimental results
obtained that have grounded the technology of differential application irrigation
on the meadow soils of the Big Island of Braila, with an area of​ 72.000
hectares.

Keywords

groundwater, irrigation scheduling, hydroameliorative arrangements

References

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