Test the efficiency of mycorrhizal fungi (Glomus fasciculatum) and magnetic water to reduce the effect of salinity on plant onion (Allium cepa L.)

Abstract

We carried out two factorial experiments in pots (capacity 4 kg) in order to increase the salt tolerance  of  one  of  our  important  plant -  onion,  using  inoculation  with  mycorrhizal  fungi  (Glomus fasciculatum) and magnetized water under conditions of salinity stress. The first experiment aims the interaction  between  fungus  inoculation  and  four  levels  of  saline  drainage  water  (0.66,  5.0,  7.5,  10.0 ds/m)  and  the  second  experiment  aims  the  interaction  between  the  inoculation  factor  and  the  water magnetic and two soils with different salinity (5.6, 13.4 ds/m). The results showed that the inoculation with  the  mycorrhizal  fungi  led  to  a  significant  increase  in  height,  fresh  weight  and  dry  weight  of onions  to  all  levels  of  salinity  compared  with  no  addition  of  inoculation,  while  led  to  a  significant reduction in electrical conductivity and the percentage of AM colonization of all levels of salts water. The  treatment  with  inoculation  and  magnetized  water  when  the  salinity  was  13.4  ds.m-1  recorded significant  increase  for  plants  height,  fresh  weight  and  dry  weight  (38.46%,  60.0%,  92.30%) respectively compared to the variant without inoculation, only with addition of water non-magnetized at  the  same  soil  salinity.  The  addition  of  mycorrhizal  fungi  (Glomus  fasciculatum)  and  magnetized water impact significant in reducing the electric conductivity (Ec) in soil salinity (13.4 ds/m) while it affects significantly the percentage of AM colonization in both two soils.