Assessing yield, water productivity and farm economic returns of malt barley as influenced by the sowing dates and supplemental irrigation

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• 关键词：Crop transpiration ; Dual crop coefficient ; Economic water productivity ; SIMDualKc water balance model ; Stewart&rsquo ; s water-yield model
• 刊名：Agricultural Water Management
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：179
• 期：Complete
• 页码：132-143
• 全文大小：2184 K
• 卷排序：179

文摘

Two malt barley seasons with contrasting rainfall were surveyed in a center-pivot field. Sowing dates and irrigation scenarios were assessed using water and economic indicators. Sowing by mid-November leads to reduced water use but lower yields and profit. Sowing by early-January needs more irrigation and leads to higher yields and returns. Rainfed barley is not feasible in drought years and returns are better with late sowing.