National Research Development Institute for Soil Science

Bucharest, Romania

National Research Development Institute for Soil Science

Bucharest, Romania
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Oprica D.I.,University of Bucharest | Oprica D.I.,National Research Development Institute for Soil Science | Cioroianu T.M.,National Research Development Institute for Soil Science | Lungu M.,National Research Development Institute for Soil Science | And 4 more authors.
Journal of Plant Nutrition | Year: 2017

Tomatoes are consumed and cultivated all over the world for not only their pleasant taste but also their curative properties. Therefore, the challenge for growers is to obtain high-quality crop productions by developing new varieties of tomatoes or new ecofriendly fertilizers. This study was to test a bone glue-based foliar fertilizer on the tomato crop. The experiment was organized in a vegetation house under an original treatment scheme. Four types of foliar fertilizers were tested: macroelements, microelements and glue; macroelements and glue; microeleements and glue; and macroelements and microelements without glue. The fertilizers were applied as diluted solutions (0.5% and 1%) across three treatments applied on nine variants. The treatments with bone glue-based foliar fertilizer led to a high-quality production of healthy tomatoes, a good absorption of nutrients together with a reduced nitrites level in tomatoes and an increase of agricultural productivity. The applied foliar fertilizers tested on the hybrid tomatoes used in the experiment had a significant positive influence on vegetative growth. The nitrate concentration in the fruit did not exceed the maximum accepted level. The agronomic analysis of the mineral composition of the fruit revealed that foliar fertilizers with glue significantly influenced nutrient assimilation during the treatments. The level of nitrogen (N), phosphorus (P), and potassium (K) recovery following the application of bone glue foliar fertilizers was higher as compared to the control and the variant without bone glue. Biometric measurements had shown significant differences favorable to tomatoes treated with this bone glue foliar fertilizer. © 2017 Taylor & Francis Group, LLC.


Ofrica D.,University of Bucharest | Ofrica D.,National Research Development Institute for Soil Science | Mihaicioroianip T.,National Research Development Institute for Soil Science | Lungip M.,National Research Development Institute for Soil Science | Badea I.A.,University of Bucharest
Revista de Chimie | Year: 2014

The main objective of the present work was the preparation and characterization of a new foliar fertilizer which contains bone glue as an organic physiologically active source. The association of the bone glue with macro and micronutrients from the common foliar fertilizer ensures a synergic effect on the production and quality of maize and sunflower. The survey of the evolution of each crop together with the qualitative and quantitative analysis of the physical and chemical characteristics of the leaves and seeds showed that the new foliar fertilizer increased the nutrients uptaken by plants. Moreover, the analysis of soils involved in this experiment revealed that this new fertilizer acts as an eco-friendly one.


Sirbu C.,National Research Development Institute for Soil Science | Ciorolanu T.M.,National Research Development Institute for Soil Science | Parvan L.,National Research Development Institute for Soil Science | Grigore A.,National Research Development Institute for Soil Science | Vasile D.I.,University of Bucharest
Revista de Chimie | Year: 2015

Using as fertilizers the substances containing humic compounds proved to be effective in a wide range of cultures and applied to different types of soil. The types and number of fertilizers that are composed of organic substances of plant origin are very numerous due to the variation of sources from which they can be obtained. The range of fertilizers containing humic substances as source of plant origin has extensively developed both due to the sources from which they can be obtained and to the mode of extraction (separation) from them. Such extracts can be used as such or combined with other organic or mineral substances, and this possibility leads to obtaining one of the largest classes of fertilizers, known as organo-mineral fertilizers. This paper presents a technology for obtaining complex fertilizers with humic substances, as well as the physicochemical and agrochemical characteristics of two fertilizers experimentally obtained.


Stanciu-Burileanu M.M.,National Research Development Institute for Soil Science | Stroe V.M.,National Research Development Institute for Soil Science | Musat M.,University of Bucharest | Luca C.,Polytechnic University of Bucharest | Lacatusu R.,National Research Development Institute for Soil Science
Revista de Chimie | Year: 2015

Speciation determination can be obtained by solid analysis techniques for samples with high Se concentrations (mg/kg). Such results are not transposable to samples containing low selenium concentrations (μg/kg), in particular in a radiological context or biosphere monitoring. In this paper, it is highlighted the development of some methods regarding the determination of selenium content from soil samples, presuming a preliminary sample preparation. Traditionally, wet acid digestion has been used which involves digestion/heating with strong acids to destroy the organic matter and dissolve the metal ions. The proposed procedure involves microwave sample preparation by using a mixture of HNO3 Ultrapure water. HPLC-ICP-MS (liquid chromatography-inductively coupled plasma mass spectrometry) was applied to assess the selenium concentrations in some soil samples from Romanian Plain, Central and South Dobrogea. For this purpose, data regarding selenium total content in soil, as well as selenium species from soil are presented, the contents being determined by chemical methods and analytical techniques. For extracting the selenium species existing in the studied soil samples, a 0.1M NaOH solution has been usedbecause it had the greatest efficiency for selenium speciation from soil sample with low content of selenium. The major extractable species was selenite.


Dana D.,National Research Development Institute for Soil Science | Cotet V.,National Research Development Institute for Soil Science | Anton I.,National Research Development Institute for Soil Science | Rizea N.,National Research Development Institute for Soil Science | And 2 more authors.
Journal of Environmental Protection and Ecology | Year: 2013

The main objective of this paper was to analyse soil solution sampled with a SDEC lysimeter and evaluation of mineral nutrition of wheat in relation with the soil conditions from the S.C. Agrotehnic S.R.L. Paulesti experimental plot. For analysis of soil solution taken by a SDEC lysimeter, soil solution was analysed in terms of reaction, electrical conductivity and anion and cation content. In order to evaluate the mineral nutrition of wheat plants, the analysis of macro- and micronutrients has been carried out in the ear emergence-flowering stage. Wheat cultivars used were: RENAN variety for consumption, and Apache and BOEMA varieties for seed. The obtained data have been interpreted as the optimum content of mineral nutrients mentioned in literature for these growing stages.


Sirbu C.E.,National Research Development Institute for Soil Science | Cioroianu T.M.,National Research Development Institute for Soil Science | Rotaru P.,University of Craiova
Annals of the University of Craiova, Physics | Year: 2010

In this paper we investigate thermal behaviour of four samples of humic acids: two samples was prepared in laboratory and two samples were commercial humic acids. Thermal analysis measurements (TG, DTG, DTA and DSC) of humic acids were carried out in dynamic air atmosphere. On relate the thermogravimetric and enthalpic effects.


Monica S.-B.M.,National Research Development Institute for Soil Science | Stroe V.M.,National Research Development Institute for Soil Science | Rizea N.,National Research Development Institute for Soil Science | Musat M.,University of Agronomical Sciences and Veterinary Medicine
Romanian Biotechnological Letters | Year: 2015

Several digestion methods including the reverse of aqua regia and different combinations of concentrated acids (HCl, HNO3) were compared. Three acid digestion procedures were applied to certified samples to offer a proper method for determination of Zn, Cu, and Ni in soil samples. Two low pressure microwave heating programmes modified (nitric acid and Ultrapure water; nitric acid with clorhydric acid) and one procedure without pressure microwave (nitric acid with clorhydric acid and hydrogen peroxide) were tested in this study by using one standard reference material (Estuarine Sediment-1646) and ten soil samples. Short digestion time, less acid consumption, and high extraction efficiency were noted as the advantages of microwave digestion procedures. The concentration of three heavy metals (Zn, Cu, Ni) in soil samples was measured in three sampling sites of Romania, South- Eastern Romanian Plain, Central and Southern Dobrogea. The concentration of heavy metals was measured by using the atomic absorption spectrometry method and these concentration values were situated in normal limits for these chemical elements. In conclusion, to determine the total contents of heavy metals in soil samples studied, in principle any method of digestion carried out in a microwave oven can be used. © 2015 University of Bucharest.


Balaceanu C.-E.,National Research Development Institute for Soil Science
Journal of Environmental Protection and Ecology | Year: 2015

Some of the most complex polluters of the environment are thermoelectric power stations that are using coal as energy source. There are two types of environmental pollution sources: the main are baskets exhaust gases of coal combustion, so called high sources, and the secondary sources that are ash dumps resulted from the coal combustion activities, so called low sources. Thermoelectric power station Doicesti, located in the area of Sub-Carpathian hills, the Ialomila valley, is a major source of environment pollution with heavy metals, since 1952 when was built. By geographically point of view, the studied territory can be included into Sub-Carpathians Curvature, more specify in the Prahova Sub-Carpathian subunit. Pedogenesis factors: rock, topography and parent matherial, have led the evolution of isolated, lythomorphic soils. In the investigated territory four soil classes: Luvisols, Cambisols, Vertisols and Protisols were identified, each of them with types and subtypes mentioned in the paper. From a geomorphological viewpoint, thermoelectric power stations Rovinari belongs to the Calnic-Campul Mare inter-hilly depression whose altitude, at the Rovinari, is 150 m. The soil forming factors causing the soil evolution have been the rock, parental material and relief, all of them determining the evolution of lithomorphic zonal soils. The soils in the analysed area represented by the classes: luvisols, hydrisols, cambisols and protisols. The subject of this paper is to analyse the loading degree of lead of the soils affected by emissions from thermoelectric power stations Doicesti and Rovinari. Soil samples collected soil profiles distributed in all cardinal directions, were analysed for pH, lead contents. In the investigated area, lead pollution of soils, caused by lead emissions from thermoelectric power stations Doicesti and Rovinari, were recorded. The lead pollution phenomenon gathering way by changing the normal content of soil, plant, and consequently, could affect the health of the inhabitants of this territory.


Cotet V.,National Research Development Institute for Soil Science | Dumitru S.,National Research Development Institute for Soil Science | Mocanu V.,National Research Development Institute for Soil Science | Calciu I.,National Research Development Institute for Soil Science | Vizitiu O.,National Research Development Institute for Soil Science
International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM | Year: 2014

The soil water retention curve or the soil water content-matric potential relationship expresses the capacity of soils to store water for plant growth, which is a very important soil property for irrigation and hydrological modelling. Due to relatively long time involved in the determination of water retention curves, there is an increasing interest for models that estimate this property from simple taxonomic data (soil particle size distribution, bulk density, organic matter and other basic properties). Among these models is the Arya-Paris approach, which is based on the similarity between the shapes of particle size distribution and soil water retention curves. In this paper the model of Arya-Paris was used for assessing the water retention curve using soil texture and bulk density data. Arya-Paris model with α values calculated was applied to evaluate pairs of θ (soil water content) - ψ (matric potential). The van Genuchten equation was then used to estimate the water retention curve in the analyzed soils. Two soil types (Rendzic Leptosol and Calcaro-calcic Kastanozem) located in the Dobrogea area from SE of Romania were analyzed. Parameters of the van Genuchten equation, θr, θs, α, n were evaluated using the pairs of values θ - ψ calculated by Arya-Paris model. Van Genuchten equation was then used to assess some parameters that have agronomical significance. Optimum soil water content and soil matric potential for soil workability correspond to the inflection point of the soil water retention curve. Depending on the characteristics of the soil water retention curve at the inflection point the soil physical quality index, S was calculated. © 2014, SGEM. All Rights Reserved.


Cotet V.,National Research Development Institute for Soil Science | Dana D.,National Research Development Institute for Soil Science
Journal of Environmental Protection and Ecology | Year: 2012

The main objective of this paper was the evaluation of mineral nutrition of wheat in relation with the soil conditions of the Agricultural Research and Development Station (ARDS) Livada and Research and Development Station for Bovines (RDSB) Tg. Mures experimental plots. Wheat cultivars used were: Glosa, Gruia, Delabrad, Faur and Dropia, and the type of soil - Haplic luvisol. In order to evaluate the mineral nutrition of wheat plants analysis of macro- and micronutrients has been carried out in the ear emergence - flowering stage. The obtained data have been interpreted as being the optimum content of mineral nutrients mentioned in literature for these growing stages.

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