|Author:||Stanciu, A. ; Domuta, C.|
|Book Group Author:||NA|
This paper presents the results of a study in Romania during 1976-2003 on water use efficiency of unirrigated and irrigated alfalfa [lucerne], using 2 indicators, i.e. 'water use efficiency', which shows the main quantity of production obtained at 1 m3 used water and 'coefficient of water use efficiency', which shows the quantity of used water to 1 kg of main production. The irrigated lucerne had higher values of daily water consumption, the differences from the unirrigated variant reaching 53% in July. As a result, the values of total water consumption improved by 40.9%. For maintaining the water supplies at depth of 0-75 cm, between the easily available water content and the field's capacity, irrigation was needed every year, its value in the total water consumption being 9.1-64.7%. The irrigated alfalfa recorded yield of 70 304 kg/ha, which was higher (51.8%) than the yield in the unirrigated variant. Irrigation improved yield stability. It also improved the water use efficiency, recording 10.62 kg green mass, which was 7.7% higher than unirrigated conditions; the quantity of consumed water by irrigated alfalfa for 1 kg of green mass was 0.09 m3, which was 10% less than in unirrigated conditions.
|Pages:||316 - 319|
|Journal:||Buletinul Universitatii de Stiinte Agricole si MedicinaVeterinara Cluj-Napoca. Seria Horticultura|
crop yield, irrigation, lucerne, plant water relations,stability, water use efficiency, Romania, Medicago, Medicago sativa,Medicago, Papilionoideae, Fabaceae, Fabales, dicotyledons, angiosperms,Spermatophyta, plants, Balkans, Southern Europe, Europe, DevelopedCountries, Forage and Fodder Crops (FF007) (New March 2000), Plant WaterRelations (FF062), Plant Production (FF100), Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management]