Al-Kayssi, A.W.; Shihab, R.M.; Mustafa, S.H. - In: Agricultural Water Management 100 (2011) 1, pp. 46-57
water stress and Nigellone volatile oil content of black cumin as a function of crop water stress index and soil gypsum … were measured to calculate crop water stress index. The crop water stress index behaved as expected, dropping to near zero … crop water stress index for the irrigation treatments; I1, I2, and I3 were increased from 0.189, 0.287, 0.380 to 0.239, 0 …