Effect of Vermincompost and Farmyard Manure and Their Combinations on Some Physical and Chemical Characteristics of Calcareous Soil in Maryout Area

A field experiment was conducted in Maryout station-West El Delta, in calcareous soil (CaCO₃  34%), studied the effect of vermin compost (VC), farmyard manure (FYM) and their combinations on some physical and chemical properties of the soil. The experiment was arranged in a randomized complete block design with three replicates. Different rates of  farmyard manure (0, 5, 7.5 and 10)Mg/fed,  vermin compost (0, 5, 7.5 and 10) Mg / fed and combination of  10 Mg/fedvermin compost with each of  5, 7.5 and 10 Mg / fed farmyard manure were incorporated into 15 cm of  surface soil, fodder beet (Beta vulgaris) was planted in November (2017-2018) as indicator crop.The results revealed thathighestvalues of productivity of fresh weight of root and shoot under treatment was combine of 10 Mg/fedvermin compost with 10 Mg /fed FYM.. Plots amended with vermin compost or/ and farmyard manure were improved compared with control. The results showed that addition of vermin compost at rate of 10 Mg / fed significantly affect at (P < 0.05) on the physical characteristic such as,total porosity,bulk density and pore size distribution in soil, farmyard manure,vermicompost and their combination had decrease significantly bulk density and  values of quickly drainable pores in comparison to control soil.However, there were increased significantly effect on available water, porosity and water holding capacity compared with control. The greatest significant effect of the treatments were combine of VC with each of 5, 7.5 and 10Mg /fed FYM on soil physical properties. Also increased significantly, N, P, K,Mn, Fe, Zn and Cu compared with untreatedplots. The soils treated by farmyard manure, vermin compostand their combination had decrease significantly EC and soil pH values in comparison to control. Also, the effects of VC, FYM and their combination on shoot fresh weight were recorded. Shoot fresh weight was significantly greater under combine of VC with FYM.