RJABS September-December 2019

Study of Replacement of Compost with Vermicompost and Its Effect on Quality and Quantity Yield and Nutritional Status of Sweet Fennel Plants Grown in Sandy Soil

Abd El-Rheem Kh. M. , Entsar M. Essa and Heba S. El-Batran

Abstract Two field experiments were carried out at the Agricultural Production and Research Station, National Research Centre (NRC), Nubaria Province, Egypt during successive winter season 2017 and 2018. The experiment was designed to investigate the effect of vermicompost as an alternative to organic compost and its effect on quality and quantity yield and nutritional status of sweet fennel plants (Foeniculum vulgare var. Dulce) grown in sandy soil. Six treatments were added in five replications, where compost and vermicompost were added at a rate of 100% (5 ton per feddan, which is the recommended doses in the Ministry of Agriculture). Vermicompost was added at rates of 25% and 50%. The compost and vermicompost were mixed at 75% and 25%, and 50% to 50% respectively.The results indicated that the addition of vermicompost to organic compost given higher results than adding them individually. The highest values of branches number per plant, plant length (cm), fresh and dry weight of shoot and bulb (g) and total green yield (ton fed-1) were obtained when using 50% vermicompost and 50% compost. The addition of vermicompost (100 %) improved the bulb dimensions (Length, width and thickness) of sweet fennel. As well as the presence of vermicompost improved the nutrients content compared to the compost, even if the vermicompost was added to the compost in different proportions. Through the previous results can be saidsuperiority of vermicompost compared to compost if the two are added to sweet fennel grown in sandy soil. Vermicompost is exemplary organic fertilizer for bestead growth and high yielding of crops.

[ FULL TEXT PDF 1-5 ] DOI:10.22587/rjabs.2019.14.3.1


Recent Review on Poly-methyl methacrylate (PMMA)-Polystyrene (PS) Blend Doped with Nanoparticles For Modern Applications

Ahmed Hashim and Basim Abbas

Abstract The [(poly-methyl methacrylate (PMMA)-polystyrene (PS)] blend doped with nanoparticles can be considered a quite promising material for different medical, environmental and industrial applications such as: antibacterial, biosensors, lens, electronics gates, transistors, and photovoltaic devices...etc. In this review, the discussion of polymer structure, polymer blend, composite materials and nanocomposites have been investigated. Also, the characterizations of poly-methyl methacrylate and polystyrene and their nanocomposites have been studied. The poly-methyl methacrylate and polystyrene and their nanocomposites have huge applications in an environmental applications.

[ FULL TEXT PDF 6-12 ] DOI:10.22587/rjabs.2019.14.3.2