The aims of the study were to analyse the concentration of nitrate and ammonium ions in soil solutions obtained using MacroRhizon miniaturized composite suction cups under field conditions and to determine potential nitrogen leaching from soil fertilized with three types of fertilizers (standard urea, slow-release urea, and ammonium nitrate) at the doses of 90 and 180 kg ha-1, applied once or d...

Controlled release fertilizers (CRF) are produced with different rates and durations of nutrient release to cater to different crops with wide ranges of nutrient requirements. A rapid technique is needed to verify the label specifications of nutrient release rate and duration. Polymer-coated urea (PCU) (43% nitrogen [N]) and polymer-coated N, phosphorus (P), potassium (K) (PC_NPK; 14-14-14) fer...

Compost has some advantages, improving soil physical properties, chemical and biological properties. It happens because its characteristics contain nutrients in varying types amounts depending on the original material, provide slowly (slow release) limited quantities, have main function of fertility health. The pile organic waste from Koto Baru market directly impacts environment to their commu...

Fertigation is one of alternative measures not only to ensure crop yield but also improve nutrient use efficiency. In this work, we evaluated growth and yield, uptake nitrogen efficiency upland carrot. To do our goal, various basal fertilizers (single chemical slow release) fertigations were employed based on the result soil diagnosis, detail was as follows; basal:fertigation = 100:0, 50:50, 30...

Selenium (Se) is an essential trace element for humans and animals with a narrow window between deficiency toxicity levels. Application of conventional chemical Se fertilizers to increase the content crops in deficient areas could result environmental contamination due fast leaching inorganic Se. Slow-release Se-enriched biofertilizers produced from wastewater treatment may therefore be benefic...

In the present paper, new environmental-friendly fertilizer components were produced in biosorption process by the enrichment of the biomass with zinc, essential in plant cultivation. The obtained new preparations can be used as controlled release micronutrient fertilizers because microelements are bound to the functional groups present in the cell wall structures of the biomass. It is assumed ...

Nanotechnology (NT) can modernize agriculture with new tools that allow better nourished and protected crops. Graphene oxide (GO) is a kind of carbon-based nanomaterial unique structural physicochemical properties, which very useful for many agricultural applications. GO, the two-dimensional carbon nanoparticles, have attracted increasing attention in last few years because these contain large ...

Methylene ureas (MU) are slow-release nitrogen fertilizers degraded in soil by microbial enzymatic activity. Improved utilization of MU in agricultural production requires more knowledge about the organisms and enzymes responsible for its degradation. A Gram-negative, MU-degrading organism was isolated from a soil in Sacramento Valley, California. The bacterium was identified as Agrobacterium t...

objective the goal of this study was to prepare and characterize alginate microspheres as an antigen delivery system and adjuvant for immunization against leishmaniasis. materials and methods microspheres were prepared by an emulsification technique and characterized for size, encapsulation efficiency, and release profile of encapsulates. selection of appropriate parameters (viscosity of algina...