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Impact of Sowing Time and Genotype on Water Use Efficiency of Lentil (Lens culinaris Medick.)

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Maphosa, L., Anwar, M. R., Luckett, D. J., Ip, R. H. L., Chauhan, Y. S. and Richards, M. F. (2022) Impact of Sowing Time and Genotype on Water Use Efficiency of Lentil (Lens culinaris Medick.). Agronomy, 12 (7). ISSN 2073-4395

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Article Link(s): https://doi.org/10.3390/agronomy12071542

Abstract

Productive water use can be an effective adaptation strategy for improving crop performance. A 2-year field study was undertaken in 2018 and 2019 to investigate the effect of sowing date and genotype on water-use efficiency of lentils grown in diverse locations in Australia. Above-ground dry matter accumulation, grain yield, soil evaporation, water use, and water-use efficiency (WUE) were measured and/or calculated at crop maturity. Early sowing (SD1/mid-April), late maturity and supplementary irrigation increased water use. The long growth cycle resulting from early sowing influenced WUE for dry matter production and grain yield. WUE ranged from 10.5 to 18.8 kg dry matter ha-1 mm-1 (WUEET (evapotranspiration)) and 17.1 to 28.3 kg dry matter ha-1 mm-1 (WUET (transpiration)) for dry matter production. For grain yield, WUE ranged from 2.11 to 5.65 kg grain ha-1 mm-1 (WUEET) and 4.71 to 9.19 kg grain ha-1 mm-1 (WUET). There was more water loss through soil evaporation in SD1 compared to the other sowing dates. Excessive or limited availability of water did not translate to more dry matter accumulation and grain yield. The study concluded that SD1 gives the maximum water productivity for biomass, and SD2 (end of April) and SD3 (mid-May) for grain yield.

Item Type:Article
Business groups:Crop and Food Science
Keywords:dry matter grain yield lentil water use water-use efficiency
Subjects:Agriculture > Agriculture (General) > Farm economics. Farm management. Agricultural mathematics
Agriculture > Agriculture (General) > Methods and systems of culture. Cropping systems
Agriculture > Agriculture (General) > Improvement, reclamation, fertilisation, irrigation etc., of lands (Melioration)
Plant culture > Food crops
Plant culture > Field crops
Plant culture > Field crops > Grain. Cereals
Deposited On:04 Jul 2022 00:10
Last Modified:26 Jul 2022 02:40

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