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Early sowing and irrigation to increase barley yields and water use efficiency in Mediterranean conditions

Yau, Sui-Kwong ; Nimah, Musa ; Farran, Mohamad

Agricultural water management, 2011-10, Vol.98 (12), p.1776-1781 [Periódico revisado por pares]

Amsterdam: Elsevier B.V

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Título:
Early sowing and irrigation to increase barley yields and water use efficiency in Mediterranean conditions
Autor: Yau, Sui-Kwong ; Nimah, Musa ; Farran, Mohamad
Assuntos: Agricultural and forest climatology and meteorology. Irrigation. Drainage ; Agronomy. Soil science and plant productions ; Barley ; Biological and medical sciences ; Computational efficiency ; Computing time ; drought ; Emergence ; farmers ; field experimentation ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; Grain and straw yields ; grain yield ; Grains ; heading ; heat ; Hordeum vulgare ; Irrigation ; irrigation rates ; irrigation water ; Lebanon ; Rain ; Seedling emergence ; sowing ; Supplementary irrigation for germination ; Supplementary irrigation for germination Water productivity Hordeum vulgare Seedling emergence Grain and straw yields Lebanon ; Valleys ; Water productivity ; Water use ; water use efficiency
É parte de: Agricultural water management, 2011-10, Vol.98 (12), p.1776-1781
Notas: http://dx.doi.org/10.1016/j.agwat.2011.07.009
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Descrição: ► In Mediterranean areas, early sowing by end of October followed immediately with 30 mm irrigation increase barley yields significantly (+70% grain and +51% straw) in this 4-year field study. ► Farmers in the region should seriously consider practicing the technique since it has a much higher irrigation water use efficiency (56.8 kg mm −1), which was more than three times higher than that of the normal practice by irrigating at the heading stage. In rainfed Mediterranean areas, early sowings which lead to early growth and maturity to escape terminal heat and drought usually give higher grain yield than late sowings in years when rains come early. We test the hypothesis that early sowing coupled with a small amount of irrigation to ensure earlier emergence increases grain yield significantly, while improving irrigation water productivity. Replicated field experiments were conducted for 4 years in the semi-arid central Bekaa Valley of Lebanon. Barley was sown early, and half of the plots were irrigated with 25–30 mm of water immediately after sowing (EI). Half of the plots also received irrigation around heading stage (LI). Besides yields, other agronomic data were collected throughout crop growth, and the supplemental irrigation water use efficiency (WUE SI) was calculated. Our results confirm the hypothesis that in Mediterranean areas early sowing followed immediately with a small amount of irrigation increases barley grain yield significantly. Farmers in the region should seriously consider practicing this technique as it produces a higher WUE SI than irrigation at the heading stage.
Editor: Amsterdam: Elsevier B.V
Idioma: Inglês

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Early sowing and irrigation to increase barley yields and water use efficiency in Mediterranean conditions

Yau, Sui-Kwong ; Nimah, Musa ; Farran, Mohamad

Amsterdam: Elsevier B.V

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