Document Type : Research Paper
Authors
- E. Sharifi Ashoorabadi
- H. Rouhipour
- M.H. Assareh
- M.H Lebaschy
- B. Abaszadeh
- B. Naderi
- M. Rezaei sarkhosh
Abstract
To investigate the crop water requirement of yarrow (Achillea millefolium L.), an experiment was carried out in the Alborz Research Complex during 2007-2008. Crop water requirement was determined using Penman-Monteith method and lysimetery. The Penman-Monteith method was used to estimate the evapotranspiration of the hypothetical reference crop with fixed crop parameters. The Kc coefficients for Achillea millefolium were calculated to be 0.16, 0.45, 1.05 and 0.81 for the initial, development, middle and the late stages (80 percent of plant flowering) of growth, respectively. According to the results, Achillea millefolium could be recommended for dry land farming areas with minimum 149.72 mm annual rainfall.
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