الفهرس 
Effect of salinity on plant growthOnly 14 pages are availabe for public view
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Abstract
Pot experiments were carried out a t the experioien+,al s t a t i o n of the Faculty of Agriculture, Tants University G*,, k a f r kl-Sheikh during 1973, 1974 and 1974/1975 seasons t o study t h e e f f e c t of c a t i o n s (Na, Ca and Mg) , anions (~1C,O and SO ), 3 4 i n t e r a c t i o n s between cations and anions and 8 l e v e l s of s a l i n i t y (0.2, 0.4, 0.6, 0.8, 1, 1.2, 1.4 and 1.7 gm salt/100 gm s o i l ) i n addition t o t h e control treatment which used without addi3ive s a l t s on t h e
growth and chemical analysis of Na , Ca and Mg of each of -k-.-o chia -t-r ico_p_h,hylla, -Zin-nia elegans, Calendula -o f f i c i n-a- l i s and fi’iathiola incana p l a n t s . The s a l t s used in t h i s study were: NaC1, Na CO Na SO , 23’ 2 4 CaCl CaCO , CaSO lIgC1 MgCO and 1~igSO 2 ’ 3 4’ 2 ’ 3 4.The following r e s u l t s were obtained : L- The efe-c t of c a t i o n s : The obtained r e s u l t s showed t h a t the addition of sodium caused a decrease of each of plant height, r o o t l e n g t h , number of flowering branches, peduncle length, diameter and number of flowers and fresh and dry weig\ts of the e n t i r e plant and its p a r t s of the four species studied than t h e addition of calcium or magneslurn s a l t s , The calcium and magnesium treatments gave nearly the same values i n mos: cases, 2- - The e f f e c t of anions : With respect t o t h e effect of anions on the growth, it was c l e a r t h a t the chloride was the most i n j u r y anions on the growth of the four species studied, followed by carbonate then sulphate.