|Author:||Singh, J. B. ; Pradeep, Behari ; Yadava, R. B.|
|Book Group Author:||NA|
A field experiment was conducted during rabi season at the Central Research Farm, Indian Grassland and Fodder Research Institute, Jhansi for seven consecutive years from 1998-99 to 2004-05 to determine the evapotranspiration, water use efficiency and crop coefficient of lucerne (var. Anand-2). Irrigation scheduling was done based on irrigation water:cumulative pan evaporation of 1.0 and irrigation was kept as 60 mm per irrigation. Four cuttings were taken at the interval of 74, 31, 31 and 31 days in all years. Results revealed that the dry matter yield increased with the advancement of cutting and a maximum of 3.26 tonnes/ha was obtained in the fourth cut. The total evapotranspiration losses varied from 101.9 to 224.8 mm in different cuttings. The total dry matter yields of respective years were related with the corresponding total crop evapotranspiration. The estimated water use efficiency for different cuttings ranged from 0.36 to 2.04 kg/m3 with a maximum value in the second cut. Evapotranspiration-water use efficiency of lucerne varied according to climatic conditions, soil water regime, season, location, annual evapotranspiration and growth cycle. First cutting, which is of longer duration, is marked with three distinct phases, namely germination, establishment and growth; whereas the rest of the cuttings were subdivided into regeneration phase and growth phase.
|Pages:||17 - 19|
crop yield, cutting date, evapotranspiration, irrigationscheduling, lucerne, plant water relations, water use efficiency, India,Medicago, Medicago sativa, South Asia, Asia, Developing Countries,Commonwealth of Nations, Medicago, Papilionoideae, Fabaceae, Fabales,dicotyledons, angiosperms, Spermatophyta, plants, eukaryotes, alfalfa,Forage and Fodder Crops (FF007) (New March 2000), Plant Water Relations(FF062), Plant Production (FF100), Soil Water Management (Irrigation andDrainage) (JJ800) (Revised June 2002) [formerly Soil Water Management]