Two field experiments were carried out in the Research Station Sids in Beni swef, Egypt, during winter season 2015/2016, and summer season 2016; to study the effect of amendments (sulfur at rate of 1ton/fed, Farmyard manure at rate of 4 ton/fed and filter mud at rate of 2 ton/fed and in combination) on soil properties, some characteristic growth and nutrients uptake by onion and corn plants.
The results showed that the highest values of grain yield of corn plant, dry weight of onion plant nitrogen, phosphorus and potassium uptake were recorded with combined effect of amendments (sulfur, farmyard manure and filter mud). The combined effect of amendments was found to be more effective in reducing EC and pH of the soil compared with application of sulfur or filter mud alone. Also, organic matters contain more of elements of nutrients by application of combined amendments which is due to solubility to nutrients uptake by plant. On the other hand, addition of sulfur to soil in combination with farmyard manure and filter mud caused a high increase of the available nitrogen, phosphorus and potassium due to increase of soil fertility compared with control treatment.
Generally, from these results it can be concluded that the application of amendments (sulfur, Farmyard manure and filter mud in combination) improved soil fertility as well as increase of plant growth and nutrients uptake by onion and corn plants.