Table 1.

Changes in chlorophyll content index (CCI), leaf temperature (LT), stomatal conductance (g_s), minimal fluorescence (Fo), maximal fluorescence (Fm), variable fluorescence (Fv), water-splitting complex on the donor site of the PSII (Fv/Fo), maximum quantum yield of PSII (Fv/Fm), photosynthesis relative vitality (PI), Q_A reduction rate of the PSII acceptor (Tfm), and energy necessary for the closure of all the reaction centers (Sm) in response to different herbicides. Data are presented as mean from at least three sets of different measurements (least significant differences (LSD 5% and 1%) of means mentioned below the table).

	CCI	LT	gs	Fm	F0	Fv	Fv/Fm	Fv/Fo	PI	Sm	Tfm
Control
12	17.8	17.5	1.45	3319	492	2827	0.85	5.75	2.37	22.99	300
36	19.3	18.2	0.52	3047	511	2536	0.83	4.96	1.27	16.88	270
60	16.7	23.7	0.59	3450	486	2964	0.86	6.10	2.35	22.54	290
84	17.7	29.7	0.15	3304	484	2820	0.85	5.83	1.87	17.23	290
U.46 CombiFluid
12	18.2	15.9	1.15	3188	501	2687	0.84	5.36	1.80	20.10	250
36	18.8	13.6	1.38	3135	546	2589	0.83	4.74	1.10	16.07	240
60	19.1	21.7	0.43	3271	491	2780	0.85	5.66	2.47	24.17	700
84	19.3	29.4	0.38	3884	519	3365	0.85	6.48	1.93	14.50	270
Cruz
12	16	17.1	0.88	3050	464	2586	0.85	5.57	2.13	26.37	290
36	15.5	15.9	1.75	3123	572	2551	0.82	4.46	1.18	19.44	230
60	15.4	22.3	1.28	3342	585	2757	0.83	4.71	1.29	23.65	290
84	14.1	29.2	1.23	3236	536	2700	0.84	5.22	1.49	20.71	290
Mister
12	15.9	19.7	0.34	3065	492	2573	0.84	5.23	1.76	21.84	270
36	15	18.6	0.35	3157	665	2492	0.79	3.75	0.80	21.03	280
60	13.1	20.3	0.42	3334	675	2659	0.80	3.94	0.92	23.47	280
84	13.8	30.4	0.16	3139	559	2580	0.82	4.62	1.17	19.53	260
Basagran
12	14.6	17.3	0.1667	2569	741	1828	0.71	2.47	0.10	20.02	900
36	14	22.2	0.42	1493	978	515	0.35	0.85	0.01	0.78	100
60	13.7	33	0.32	1196	968	228	0.19	0.75	0.01	1.75	100
84	11	27.5	0.1667	1061	926	135	0.13	0.72	0.00	1.48	80
Bromicide
12	14.2	18.2	0.28	2746	1231	1515	0.55	1.23	0.02	17.95	900
36	14.8	18.2	0.1733	2028	1583	445	0.22	0.76	0.00	0.13	7
60	14.6	21.8	0.1513	1344	1304	40	0.03	0.68	0.00	0.13	5
84	12.9	30.2	0.1643	963	949	14.67	0.02	0.68	0.00	0.13	5
Lumax
12	13.1	19.7	0.1497	3120	552	2568	0.82	4.65	0.45	28.66	700
36	12.2	19	0.36	2898	972	1926	0.67	1.98	0.03	6.33	800
60	12.8	21.1	0.38	1962	1076	886	0.45	0.95	0.01	0.45	28
84	12.5	30.3	0.1543	1804	1092	712	0.40	0.89	0.01	0.28	27
Gramoxone
12	17.2	19.8	0.17	2128	775	1353	0.64	1.75	0.14	13.60	600
36	3.9	23.3	0.66	786	788	15	0.37	0.68	0.00	0.13	4
60	0	0	0	0	0	0	0.00	0.00	0.00	0.00	0
84	0	0	0	0	0	0	0.00	0.00	0.00	0.00	0
LSD 5%	0.9	0.493	0.124	21.4	9.05	6.16	0.032	0.773	0.008	0.152	4.17
LSD 1%	1.2	0.659	0.166	28.6	12.09	8.23	0.043	1.03	0.001	0.205	5.6