Table 2.

Summary of measured parameters and associated statistical analysis at different stages of drought.

Different stages of drought	Parameters	Clay loam columns					Silty sand columns
		1	2	3	Mean	% error	1	2	3	Mean	% error
Boundary effect zone Suction values Clay loam—11.9 kPa Silty sand—5.1 kPa	Soil water content	32.9	34.5	32.7	33.4	2.26	44.6	46.8	47.4	46.3	2.37
	Stomatal conductance	147.1	134.9	162	148.0	6.30	198	167	177	180.7	6.39
	Photosynthetic efficiency	0.0342	0.0326	0.0373	0.0347	5.00	0.0598	0.0521	0.0548	0.055	5.08
	Maximum CO2 fixation rate	5.26	5.03	5.76	5.35	5.09	14.13	12.78	14.49	13.80	4.92
	Maximum yield	0.734	0.744	0.720	0.733	1.15	0.772	0.789	0.764	0.775	1.20
	Effective yield	0.210	0.193	0.219	0.207	4.61	0.475	0.426	0.433	0.445	4.54
	Leaf water content	0.79	0.81	0.83	0.81	1.64	0.80	0.83	0.84	0.823	1.88
Transition zone Suction values Clay loam—284.3 kPa Silty sand—8.6 kPa	Soil water content	30.4	31.7	32.4	31.5	2.33	18	18.9	17.8	18.2	2.44
	Stomatal conductance	86.8	76.1	89.1	84	6.26	128	136.1	113.7	125.9	6.49
	Photosynthetic efficiency	0.038	0.034	0.037	0.036	5.01	0.0582	0.0497	0.0547	0.054	4.92
	Maximum CO2 fixation rate	5.73	4.93	5.33	5.33	4.99	12.18	10.93	12.32	11.81	4.96
	Maximum yield	0.733	0.747	0.722	0.734	1.08	0.741	0.757	0.764	0.754	1.15
	Effective yield	0.287	0.254	0.263	0.268	4.72	0.469	0.412	0.433	0.438	4.71
	Leaf water content	0.72	0.73	0.75	0.733	1.52	0.75	0.72	0.74	0.737	1.51
Residual zone Suction values Clay loam—1365 kPa Silty sand—108.2 kPa	Soil water content	20.8	21.6	22.3	21.57	2.37	1.15	1.08	1.13	1.12	2.38
	Stomatal conductance	36.5	38.1	32.2	35.60	6.36	37	36.6	31.7	35.1	6.45
	Photosynthetic efficiency	0.0102	0.0112	0.0098	0.0104	5.12	0.0251	0.0246	0.0221	0.023	5.10
	Maximum CO2 fixation rate	0.72	0.80	0.71	0.74	4.85	3.76	3.46	3.98	3.73	4.88
	Maximum yield	0.184	0.186	0.180	0.183	1.21	0.616	0.632	0.612	0.62	1.29
	Effective yield	0.036	0.037	0.041	0.038	4.91	0.164	0.152	0.144	0.153	4.64
	Leaf water content	0.62	0.59	0.61	0.61	1.83	0.60	0.62	0.63	0.62	1.62