Table 8.

Effects of elevated CO₂ (EC), tropospheric O₃ (EO) and their interactive condition of elevated CO₂X O₃ (ECO) on calcium (Ca), magnesium (Mg), potassium (K) and phosphorus (P) contents in the grains of two wheat cultivars^∗.

	Calcium (Ca) (ppm)			Magnesium (Mg) (ppm)				Potassium (K) (%)			Phosphorus (P) (%)
	Treatments	2016–17	2017–18	Mean	2016–17	2017–18	Mean	2016–17	2017–18	Mean	2016–17	2017–18	Mean
HD-2967	Amb	26.1	33.5	29.8	88.1	98.7	93.4	0.3	0.34	0.32	0.28	0.33	0.3
	EC	23.2	28.2	25.7	91	79.2	85.1	0.31	0.26	0.28	0.29	0.25	0.27
	EO	31.2	38	34.6	100	118	109	0.33	0.43	0.38	0.31	0.37	0.34
	ECO	31.3	26.7	29	93.4	104.2	98.9	0.35	0.31	0.33	0.29	0.31	0.30
C-306	Amb	34.4	28.2	31.3	97.6	89.2	93.4	0.29	0.33	0.31	0.3	0.34	0.32
	EC	22	26.4	24.2	82	94	88	0.31	0.27	0.29	0.31	0.3	0.30
	EO	38.3	32.5	35.4	101.3	112.7	107	0.39	0.35	0.37	0.35	0.32	0.33
	ECO	26.1	30.3	28.2	106.5	86.7	96.6	0.28	0.34	0.31	0.34	0.3	0.32

^∗Determination was done on 32 samples (8 from each replicate for each treatment during each year).