Efficiency of applying Fe and Zn singly or in various combinations as nano and non-nano forms of foliar spray on snap bean (Phaseolus Vulgaris).

Document Type : Original Article


Soil and Water Department, Faculty of Agriculture, Moshtohor, Benha University, Egypt.


16 combinations of 4 Fe and 4 Zn  foliar spray solutions of Fe0, Fe1, Fe2 and Fe3 and similars of Zn0,Zn1, Zn2 and Zn3  (mgL-1) i.e. 0, 250-nano, 500-nano and 1000-micro (ordinary) FeL-1 were sprayed on   snap bean (Phaseolus Vulgaris). Sources were FeSO4.7H2O and ZnSO4.7H2O. Spraying was done on days 37, 44   , 51    and 58   after seeding. Plants of Zn0Fe1 gave the lowest fresh yield of 652 kgha-1, while plants of Zn2Fe3 gave the highest yield of 1156 kgha-1 with an increase of 77.3% over the lowest Applying Zn or Fe singly or various combinations proved of positive effect. A decrease in yields occurred by application of Zn and Fe at the high dose of 1000 mgL-1 indicating a retarding effect at such high concentrations.


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