In acid soils, soluble inorganic phosphorus is fixed by aluminium and iron. To overcome this problem, acid soils are limed to fix aluminium and iron but this practice is not economical. The practice is also not environmentally friendly. This study was conducted to improve phosphorus availability using organic amendments (biochar and compost produced from chicken litter and pineapple leaves, res...

Abstract Egg consumption is very high throughout the world and with it comes enormous amount of waste eggshells. To reduce utilize these wastes, eggshell wastes were simply transformed to low- or high-purity calcium carbonate grades by washing, crushing, drying use as raw materials for producing highly valuable phosphate products. Low-purity grade was used prepare triple superphosphate using in...

Filter cake is one of the main waste products of zinc processing industries and it contains a high amount of toxic heavy metals. In this research in order to reduce heavy metals leachability in filter cake, Portland cement, natural pozzolan, diammonium phosphate (DAP), triple superphosphate (TSP), lime, zinc oxide and ground granulated blast furnace slag (GGBFS) have been used. This research’s ...

Soil phosphorus (P) release capability could be assessed through the degree of P saturation (DPS). Our main objective was to determine DPS and, hence, P threshold DPS values of an Ultisol treated with triple superphosphate (TSP), Gafsa phosphate rocks (GPR), or Christmas Island phosphate rocks (CIPR), plus or minus manure. P release was determined by the iron oxide-impregnated paper strip (stri...

The concern about soil quality has increased, since its use and intense mobilization may decreased its ability to keep a biological and sustainable production. However, since soil quality cannot be comprehensively measured by a single indicator, emergy synthesis rises as an alternative to assess this issue. This study aimed to present a comparative method for soil quality vis-a-vis the resource...

The phosphorus (P) availability in volcanic soils is a main limitation for permanent pasture growth. Phosphorus use efficiency (PUE) must be improved to increase forage production with minimum impact on the environment. aim of present study was assess at field conditions PUE, P uptake (PUPE), utilization (PUTE), and nutrition index (PNI) pastures grown different environments under rates sources...

A field experiment was carried out at Agricultural Researchs and the Experiments Station in Wasit province during 2019-2020 season. This study aimed to investigate effect of three factors, first being biofertilizer levels (without addition , a combination Bacillus megaterium + Glomus mosseae complet G. mosseae, Azotobacter chroococcum, B. Azospirillum brasilense). second factor vermicompost (wi...