Influence of irrigation on yield and moisture utilization of groundnut (Arachis hypogaea)
DOI:
https://doi.org/10.59797/ija.v46i3.3303Keywords:
IW CPE, Yield, Water balance, Evapotranspiration, ET Pan E, GroundnutAbstract
A field experiment was conducted during 1994 97 on clay loam soil of medium land with winter groundnut (Arachis hypogaea L.). The pod yield increased with increasing irrigation water : cumulative pan evaporation (IW : CPE) and the maximum yield of 22.4 qlha was obtained at 1.4 lW : CPE with 52.5 cm evapotranspiration (ET), 76.1 cm water requirement (WR) and 42.8 kglhalcm crop water use efficiency (CMUE). It required 12 irrigations of 6 cm depth each with ET:Pan E ratio of 0.87. Most of the ancillary characters, however, showed increasing trend up to 1.2 IW:CPE which also gave pod yield (21.91 qlha) at par with that of 1.4 IW:CPE. The value of ET, WR, run off and percolation at 1.2 IW:CPE were 46.95, 65.39, 3.25 and 21.39 cm respectively. The crop water use efficiency and field water use efficiency were computed to be 46.69 and 33.81 kg/ halcm respectively with ET:Pan E value of 0.78 at this moisture regime.References
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