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

• Botzan, M, Haret, C, Stanciu, I, Vişinescu, I, Buhociu L., 1991. Valorificarea hidroameliorativă a Luncii Dunarii Romanesti şi a Deltei, Ed. Tehnică, Craiova.
• Botzan, M, Ioanitoaia, H, Visinescu, I, s.a., 1980. Surse suplimentare si posibilitati de economisire a apei in sistemele de irigatii - capitol - Folosirea aportului freatic pentru reducerea normei de irigatie, pag. 87-109, Redactia de propaganda tehnica agricola, Bucuresti.
• Visinescu I., – Incintele indiguite la Dunare – probleme actuale si de perspectiva. Brosura „SCDA Braila 1954-2014 – 60 de ani de activitate in slujba cercetarii romanesti” cu tema „Probleme actuale si de perspectiva privind exploatarea ameliorativa si agricola a terenurilor din luncile indiguite – rezultate ale cercetarilor efectuate in cadrul proiectului sectorial ADER 2020, PS 2.2.4”, 23.05.2014. Editura Universitara, ISBN 978-606-28-00223-9.
• Visinescu I., Bularda M.- Folosirea reversibila a a amenajarilor de desecare-drenaj pentru irigatie (subirigatie) in Insula Mare a Brailei. Brosura „Lucrarile stiintifice ale SCDA Braila”, vol. VII, 2013 (ISSN 2285-6137).Visinescu I., Bularda M., Trifan Daniela – Valorificarea apei freatice prin subirigatie in teritoriul agricol din lunca indiguita Insula Mare a Brailei. Brosura „Lucrarile stiintifice ale SCDA Braila”, vol. VII, 2013 (ISSN 2285-6137).Visinescu I., Marcel Bularda, I. Dan – Valorificarea complexa a luncii indiguite a Dunarii, solutie antiseceta de productie agricole. Lucrarile Simpozionului “Dunarea, Lunca si Delta Dunarii – Agricultura si mediu – Prezent si perspective”, pag. 201-210, ASAS Bucuresti, 8-9. 05.2008. Editura Bren, ISBN 978-973-648-839-9.
• Visinescu I. - Rezervorul de apa freatica si diferentierea regimului de irigatie in lunca amenajata hidroameliorativ, Coferinta nationala cu participare internationala “Cercetarea stiintifica in conditiile integrarii europene”, Buletin AGIR, iunie 2004. ISBN 973-8466-50-4.