نتایج جستجو برای: rock phosphate

تعداد نتایج: 142334  

Journal: :International Journal of Plant and Soil Science 2023

Aim: To study the effect of Rock Phosphate, Phosphorus Solubilizing Bacteria, and Lime on phosphorus content in soil, Uptake, Economic yield green gram (var. DGGS-4).
 Study Design: This experiment was conducted through a completely randomized design with 10 treatments 3 replications.
 Place Duration Study: The research at Department Soil Science Agricultural Chemistry, Central Univer...

Journal: :Geochimica et Cosmochimica Acta 2022

A general assumption about the geochemical behavior of phosphorus (P) is that it exists exclusively in +5 oxidation as phosphate. However, extremely reducing environments, other states such +3 may also be stable. Such environments—if prevalent globally—may determine planetary habitability, which part governed by nutrient availability, including availability element phosphorus. Here we show a ro...

2017

Chromium is commonly present in the surroundings as a result of its natural occurrence, human activities from industries and agriculture [1]. Most industrial processes produce metals as byproduct in the ecosystem, and these may end-up in tissues of bird species existing in such natural ecosystems [2]. In most cases, the concentration may be higher than the permissible limit in avian species. Ch...

Journal: :The Science of the total environment 2003
Ricardo Melamed Xinde Cao Ming Chen Lena Q Ma

A pilot-scale field demonstration was conducted at a Pb-contaminated site to assess the effectiveness of Pb immobilization using P amendments. The test site was contaminated by past battery recycling activities, with average soil Pb concentration of 1.16%. Phosphate amendments were applied at a 4.0 molar ratio of P/Pb with three treatments: T1, 100% P from H(3)PO(4); T2, 50% from H(3)PO(4)+50% ...

2013
Asad M F AlKhader Azmi M Abu Rayyan

A greenhouse pot experiment was conducted to evaluate the effect of phosphorous (P) fertilizers application to an alkaline calcareous soil on the water use efficiency (WUE) of lettuce cultivar "robinson" of iceberg type. Head fresh and dry weights, total water applied and WUE were affected significantly by the P fertilizer type and rate. P fertilizers addition induced a significant enhancement ...

2006
Philip C. Bennett Annette Summers Jennifer A. Roberts Lesley A. Warren PHILIP C. BENNETT JENNIFER A. ROBERTS ANNETTE SUMMERS ENGEL

Direct Counting 45 Procedure 1: DAPI Cell Count: Sandy Sediment 46 Rock MPN 47 SEM Surface Counts 48 Quantitative FISH 48 Procedure 2: Sample Collection and Preservation for FISH 50 Procedure 3: Slide Preparation and Cell Fixation for FISH 50 Procedure 4: Hybridization 51 Procedure 5: Post-hybridization 52 Procedure 6: Examination and Quantification 53 Chemical Biomass 53 Procedure 7: Lipid Pho...

2009
B.D.K. Ahiabor H. Hirata

The effects of a superphosphate (SP) and a rock phosphate (RP), with equal total P contents, on the growth and mineral nutrition responses of mycorrhizal and nonmycorrhizal cowpea, pigeon pea and groundnut were investigated in a pot experiment using an air-dry gamma ray-sterilized (1.5Mrad) Andisol subsoil. Adequate amounts of micronutrients were added to the pot soils as supplements. The plant...

Journal: :Soil Biology & Biochemistry 2022

The efficiency of soil organic carbon (SOC) sequestration as a suitable negative emission technology depends mainly on plant-derived input and its allocation to stabilised SOC pools. These processes may be affected by fertiliser use type. purpose this study was investigate the effect (poultry manure compost), mineral (rock phosphate) their mixture (OC) transfer from plant soil. We studied OC pr...

2004
Thomas J. Algeo David L. Hoffman J. Barry Maynard Michael M. Joachimski James C. Hower W. Lynn Watney

Ancient black shales have considerable potential for generation of long, high-resolution paleoclimate proxy records, given the availability of a geochemical proxy that can be easily measured. Owing to substantial differences in density between the siliciclastic matrix of black shales (2.6-2.7 g cm-) and the major non-clastic components, i.e., organic carbon, Fe-sulfide, and phosphate (ca. 1.0-1...

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