Table 2.

Influence of film-forming polymers on leaf photosynthetic efficiency (PI), chlorophyll concentration, and necrosis of evergreen oak under field conditions after applications of 6% salt (NaCl) at week 1 and months 1 and 3 after polymer application.

Treatment	Week 1			Month 1			Month 3
Treatment	PI	Chlorophyll concentration (SPAD)	Leaf necrosis	PI	Chlorophyll concentration (SPAD)	Leaf necrosis	PI	Chlorophyll concentration (SPAD)	Leaf necrosis
Control	1.43	21.73	3.9	1.17	18.67	3.9	1.18	17.81	3.9
Nu Film P 1%	1.61^{^ns}	21.19^{^ns}	3.1^{^ns}	1.46^{^ns}	20.78^{^ns}	3.6^{^ns}	1.43^{^ns}	19.51^{^ns}	3.6^{^ns}
Nu Film P 2%	1.47^{^ns}	20.93^{^ns}	4.5^{^ns}	0.83^{^ns}	16.86^{^ns}	4.3^{^ns}	1.38^{^ns}	19.59^{^ns}	4.0^{^ns}
Spray Gard 1%	1.39^{^ns}	22.24^{^ns}	3.0^{^ns}	0.88^{^ns}	17.39^{^ns}	3.0^{^ns}	0.83^{^ns}	17.53^{^ns}	3.1^{^ns}
Spray Gard 2%	1.31^{^ns}	20.67^{^ns}	2.8^{^z}	0.81^{^ns}	16.32^{^ns}	3.1^{^ns}	1.18^{^ns}	18.00^{^ns}	3.3^{^ns}
Bond 1%	2.57^{^z}	28.10^{^z}	0.7^{^z}	2.44^{^z}	26.15^{^z}	0.9^{^z}	2.57^{^z}	23.28^{^z}	1.3^{^z}
Bond 2%	1.98^{^ns}	26.13^{^z}	1.1^{^z}	1.71^{^ns}	26.38^{^z}	1.4^{^z}	1.95^{^z}	22.30^{^z}	1.9^{^z}
Crop Spray 1%	1.99^{^ns}	25.60^{^z}	1.7^{^z}	1.28^{^ns}	20.16^{^ns}	2.4^{^z}	1.36^{^ns}	19.59^{^ns}	3.9^{^ns}
Crop Spray 2%	2.06^{^z}	26.02^{^z}	1.3^{^z}	0.82^{^ns}	15.14^{^ns}	2.9^{^ns}	1.35^{^ns}	20.04^{^ns}	3.5^{^ns}
LSD	0.619	3.252	1.08	0.603	2.842	1.49	0.651	3.126	1.17

All PI and chlorophyll concentration values mean of five trees, six leaves per tree. All necrosis values mean of five trees.
↵^zSignificantly different from controls according to least significant difference (LSD) at P < 0.05.
↵^ns = not significant different from control value.