[PDF] Top 20 Extraction methods and availability of phosphorus for soybean in soils from Parana State, Brazil

... evaluation of methodologies for the analysis of soil, phosphorus (P) has been the single most studied aspect, due to the complexity of this dynamic element in ...conditions in ... See full document

... solution of Mehlich-1 can extract insoluble soil Zn forms, not satisfactorily discriminating the pH effect on Zn availability for plants (Abreu; Lopes; Santos, ...greater extraction ability of ... See full document

... capacity of the two extractors was different, since the resin extracted more P than Mehlich-1 (Table ...action of the resin which is similar to that of plant roots, ...extract from soil P ... See full document

... Phosphorus availability in samples of Aquatibia (Typic xerofluvent) and Hoda (Ultic haploxeralf) soils incubated with increasing amounts of organic materials (barley ... See full document

... analysis methods, making a comparison of the values observed in our study with other publications ...difficult. In Brazilian literature, path analysis was only used in a study of ... See full document

... deiciency in plants is often observed even though soils contain high total contents of B (XU et ...Such soils show a low B availability regardless of their total B ...range ... See full document

... results of the evaluation of the management process of urban solid waste recycling in course by a cooperative in the municipality of Ji-Paraná, state of Rondonia, ... See full document

... existence of securing the foremost islands and state border region of the Republic of Indonesia reviewed from a legal perspective, which is directly related to the existence ... See full document

... Formation of a soil superficial layer with high nutrient availability, mainly phosphorus is described by Rheinheimer and Anghinoni ...additions of fertilizer in the superficial ... See full document

... by soils has been described using empirical models such as Langmuir and Freundlich adsorption isotherm equations (Goldberg, ...Both of these equations contain two adjustable parameters and ... See full document

... resident in thoracic and cardiovascular surgery at UFPR, I could appreciate at hand his activities of daily living at the Clinics ...Hospital. In addition to operating, he taught undergraduate ... See full document

... 1995), and Yeomans & Bremner (1988) (C-Y & B) methods showed similarities, when compared to each other and to the C-Embrapa method, but with linear coefficients higher and closer to ... See full document

... Catarina) in Florianopolis (SC), Brazil, using soil samples from native grassland and those derived from commercial vineyards located in the municipality of Santana do ... See full document

... Absence of PMBC response over HA rates in Entisol is related to increase of BE (Figure 5) and it is linked to soil ...content of the Oxisol (Table 1) and, therefore, the ... See full document

... analyses of different formalization ...cost of the extensive margin of informality through greater enforcement on informal firms ...auditing); and (iv) increasing the costs of the ... See full document

... part of the plants, 55 days after ...70°C and weighed. The dried plant material was ground in a Wiley mill, digested in a nitro-perchloric acids, and the P concentration determined ... See full document

... criterion of cross-validation in ten subsets (cross-validation) was adopted to estimate the accuracy of the ...(subsets) of similar size and ...test and the remaining nine ... See full document

... amount of Se in food is directly related to its concentration in agricultural ...grass and 0.05 mg kg -1 for grains are considered low. Low Se concentrations in UK soils yield ... See full document

... days of the thoracic radiograph ...positioned in lateral recumbency and 100% oxygen was provided for 5 ...size of the animal was inserted into the tracheal tube, until resistance encountered, ... See full document

... one of the most important fimbriae associated with PWD (9,16,25). In this study we found the gene for F18 in 38% of ...27.5% and 19% of F18-positive E. coli strains were found ... See full document