Mitigation of water stress by compost and arginine application and its impacts on barley production

Bulletin of the National Research Centre

Table 3 Chlorophyll and relative water content of barley as affected by arginine (Arg) and irrigation treatments

Varieties	Compost	SPAD chlorophyll				Relative water content (RWC)
		Sufficient irrigation		Deficit irrigation		Sufficient irrigation		Deficit irrigation
		Arg (−)	Arg (+)	Arg (−)	Arg (+)	Arg (−)	Arg (+)	Arg (−)	Arg (+)
Giza 125	0.0-ton fed⁻¹	41.50	42.20	31.29	36.00	81.23	82.12	70.25	73.28
	2.0-ton fed⁻¹	42.60	45.40	31.87	38.80	82.20	84.05	71.26	76.11
	4.0-ton fed⁻¹	46.10	50.10	34.45	42.80	83.29	85.98	71.42	79.58
	6.0-ton fed⁻¹	47.30	51.60	35.86	45.70	84.08	88.98	73.60	83.99
Tombari	0.0-ton fed⁻¹	40.50	40.61	30.21	34.46	78.34	80.50	66.62	70.46
	2.0-ton fed⁻¹	41.40	42.00	31.21	35.87	79.91	84.10	69.81	77.84
	4.0-ton fed⁻¹	41.10	43.40	31.70	37.53	82.10	88.19	69.88	80.37
	6.0-ton fed⁻¹	42.40	45.80	36.02	41.85	83.29	90.86	71.54	82.86
	0.0-ton fed⁻¹	38.20	39.64	26.89	31.56	81.02	84.40	70.70	74.30
Ksar	2.0-ton fed⁻¹	41.22	45.10	30.05	35.79	82.27	86.79	73.82	80.26
Megrine	4.0-ton fed⁻¹	45.76	51.90	32.62	38.69	84.10	92.18	74.37	84.12
Megrine	6.0-ton fed⁻¹	48.97	55.41	36.52	44.75	86.43	92.52	76.52	87.89
Tamellat	0.0-ton fed⁻¹	40.60	41.77	28.10	33.47	75.34	79.47	71.80	74.09
	2.0-ton fed⁻¹	43.10	44.20	32.29	39.40	81.60	85.18	70.70	79.74
	4.0-ton fed⁻¹	44.30	47.80	33.90	42.80	82.23	87.47	71.63	82.13
	6.0-ton fed⁻¹	50.70	54.80	36.77	44.67	85.14	90.96	73.70	83.09
LSD (0.05)	Varieties	0.36	0.44	0.26	0.53	1.96	1.89	1.92	1.34
	Compost	0.31	0.38	0.22	0.46	0.81	0.87	0.72	0.83
	Interaction	0.63	0.76	0.45	0.91	2.57	2.57	2.45	2.02