Fernando P. Pires's research while affiliated with Instituto Nacional de Investigação Agrária e Veterinária (INIAV) and other places

Publications (29)

Article
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The mitigation of soil salinization and/or sodicization phenomena are considered one of the main challenges of irrigated agriculture. In Portugal, Lezíria Grande of Vila Franca de Xira is a region with increased salinization and sodicization risks due to the influence of tidal movement on groundwater. This study aimed to evaluate soil water and sal...
Article
The mitigation of soil salinization and/or sodicization phenomena are considered one of the main challenges of irrigated agriculture. In Portugal, Lezíria Grande of Vila Franca de Xira is a region with increased salinization and sodicization risks due to the influence of tidal movement on groundwater. This study aimed to evaluate soil water and sal...
Article
Full-text available
The Enxoé reservoir in southern Portugal has been exhibiting the highest trophic state in the country since its early years of operation. The problem has attracted water managers’ and researchers’ attention as the reservoir is the water supply for two municipalities. Extensive research was thus conducted over the last few years, including field mon...
Article
Nowadays there is an increasing effort for raising global awareness for the importance of soils to ensure food security, to improve agricultural and environmental planning and monitoring, and to establish effective and sustainable land management policies to counteract soil degradation. This study presents the INFOSOLO legacy database as the first...
Article
The temporal variability of particulate (POC) and dissolved (DOC) organic carbon concentrations was analyzed in the Enxoé temporary river, southern Portugal, between September, 2010 and August, 2013. The overall aim was to study the variability of those elements during storm events, and determine their origin and the main transfer mechanisms to the...
Article
Soil salinization and non-point source pollution are among the most important and widespread environmental problems in European Mediterranean regions. Sweet sorghum (Sorghum bicolor (L.) Moench var. saccharatum) is a moderate to high salinity tolerant crop with low water and nutrient needs, seen as an alternative to grow in the water scarce regions...
Article
Soil texture influences significantly soil hydraulic properties, which due to soil heterogeneity normally present large spatial variability. The variability of soil retention θ(h), and hydraulic conductivity K(h) curves, in 11 of the 12 texture classes of the diagram of Gomes e Silva (1962) was studied. For each textural class, average, maximum, mi...
Article
Full-text available
We evaluated the influence of the combinations of four N levels with three NaCl levels, applied through irrigation, on leaf N, P, K, Ca, Mg, and Na concentrations of sweet sorghum (Sorghum bicolor ssp. saccharatum), in two consecutive years of an experiment established on a Eutric Fluvisol in Alvalade-Sado region, equipped with a drip irrigation sy...
Article
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This work aims predicting salinization and sodification in two soils with different textures when they are irrigated with saline waters combined with different fertirrigation levels, and after the fall/winter rainfall washout of the soil. The electrical conduc­tivity of the saturation paste and of the soil solution was used as soil salinity indicat...
Article
We evaluated the changes in the soil indi­cators pH in water, total OM and N, ex­changeable cations, available P, K, Cu, and Zn, heavy metals (Cd, Cr, Cu, Ni, Pb, and Zn), and faecal origin bacteria, between 2004 and 2007, as affected by sewage sludge (SS) application and mineral fertili­sation in two field experiments with pas­tures. The treatment...
Article
Numerical inversion of cumulative infiltration data during transient water flow, complemented with initial (?i) and final water content data (?f) of the infiltration process, is a new tool to define soil water retention ? (h) and hydraulic conductivity K(h) curves and to estimate the unknown parameters in Mualem-Van Genuchten`s model (M-vG) of the...
Article
Sewage sludge (SS) application to soils reserved for pastures, still scarcely used in the country, often contributes to improve organic matter (O.M.) and some plant nutrient contents and to reduce the erosion risk, by increasing the soil vegetation cover. However, the occasional occurrence in SS of high levels of heavy metals, organic pollutant com...
Article
Three soil lysimeters (A, B, and C) were built in a Fluvisol located in Alvalade-Sado (Alentejo). The soil lysimeters were irrigated from 2001 to 2005 with waters of different quality (May to August), and subjected to atmospheric conditions during the remaining months of the year. A total depth of 500 mm was applied every year in each soil lysimete...
Article
Full-text available
In wide areas of Alentejo, soils under natural pasture have low fertility. Urban biosolids (UB) application introduce organic matter (O.M.) and nutrients in the soil, but it can also add heavy metals and bacteria of faecal origin. Thus, soil monitoring after the application of these residues is required. Organic with UB and mineral fertilisations w...
Article
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HYDRUS-1D was used to analyze water flow and solute transport in three soil monoliths (1.2 m² ? 1.0 m) that were irrigated during summer months with different quality waters. The soil monoliths were constructed on a Eutric Fluvisol in Alentejo, Portugal. EC of irrigation waters varied between 0.4 and 3.2 dS m-1 and SAR between 1 and 6 (meq L-1)0.5,...
Article
Agricultural land spreading of urban biosolids (UB) contributes to increase soil fertility and also for its recycling, but the concentrations of some metals may restrict the application rates. In this work, the copper (Cu) concentrations in surface runoff water (SRW) were evaluated, in a field experiment of application of UB with a high Cu concentr...
Article
In a experimental area located in a hillside of Mértola region, Alentejo, with an Haplic Luvisol (FAO, 2001) and a mean slope of 15%, soil loss by erosion and surface runoff after rainfall occurrence were evaluated in small erosion plots, from October 2001 until June 2004, in 3 field experiments (A, B, and D) with a sown pasture mixture under diffe...
Article
A young ‘Lane Late’ orange orchard grafted on ‘Carrizo’ citrange was planted in 1999, in a Gleyic Podzol, located at Campina de Faro (Algarve), with the application of five N rates, applied through drip fertigation, in increasing levels throughout 3 years (N1 - 10, 15, 20; N2 -20, 30, 40; N3 - 40, 60, 80; N4 - 80, 120, 160; N5 - 160, 240, 320 g N p...
Article
Two experimental fields in Herdade da Mitra and Alvalade do Sado, were installed in different soils, using conventional field operations. The crop was Zea Mays irrigated with a triple emitter source irrigation system. In this layout scheme there are 3 sources of water with different water quality: salty water (water source with NaCl dissolved), irr...
Article
Full-text available
A variety of analytical and numerical models have been developed during the past several decades to predict water and solute transfer processes between the soil surface and the groundwater table. While many models quantifying solute transport in soils usually consider only one solute and severely simplify various chemical interactions, others such...
Article
Full-text available
Many applications involving variably saturated flow and transport require estimates of the unsaturated soil hydraulic properties. Numerical inversion of cumulative infiltration data during transient flow, complemented with initial or final soil water content data, is an increasingly popular approach for estimating the hydraulic curves. In this stud...
Chapter
Full-text available
The effect of three different soil tillage systems (plow, subsoiling and no-tillage) on soil losses by runoff and “splash”, was determined in situ using a rain simulator. These determinations were carried out in a field experiment under the Project “Soil Tillage in Dry and Irrigated Farming” (EU Program AGRIMED), installed in a Cambisol from granit...
Article
Use of subterranean clover pastures is one of the better ways to increase soil fertility and to reduce soil erosion. To eliminate difficulties in establishment of subterranean clover pastures, it is necessary to increase initial soil fertility, mainly in shallow soils degraded by erosion. Samples of two soils derived from schist (Eutric Leptosol an...
Chapter
Variations of the concentration of several elements (N, P, K, Ca, Mg, Na, Zn, Cu, Fe, Mn, B, Mo) in the blades of four types of sugarbeet leaves collected 94, 114, 134 and 157 days after sowing were evaluated. The types of leaves chosen were the following: a young centre leaf (B), the youngest fully expanded leaf near B (A2), the next older leaf be...

Citations

... The most represented land use classes in Portugal are agricultural areas and forest and semi-natural areas, namely transitional woodland-shrub [27]. The proportion of extensive crop production and extensive grazing is particularly high (59%) which could lead to better ecosystem condition under reduced pressures [28]. ...
... In Table S1 of the Supplementary material, the main properties of samples SS1-SS5 and SMO1-SMO5 are summarized. In addition, data related to Portuguese SS samples (PT) were collected from the literature (Alvarenga et al. 2015;Bancessi 2009;Lopes 2017;Mendes 2014;Serrão et al. 2009;Sousa 2005). The number of samples for each toxic metal in PT samples from the literature was Cr (n = 10); Ni (n = 14); Cd (n = 15); Pb (n = 14); Cu (n = 14); and Zn (n = 15). ...
... AMA showed a significant higher amount of ash or minerals when compared to the other species (~ 17%); however, similar values for different AMA species and sugar beet leaves (~ 20%) have been reported [44]. These values are associated to a high presence of minerals such as Fe, Zn, Ca, K, and Mg in AMA [45] and P, K, Ca, Mg, Na, Zn, Cu, Fe, Mn, B, and Mo in sugar beet leaves [46]. From the nutritional point of view and beyond its protein content, AMA leaves could also be considered as a source of micronutrients for human nutrition, mainly in terms of Ca, K and Mg. ...
... In the 1980s, the aim of collecting as much measured soil profile data as possible for larger areas to derive more general PTFs which can be used for catchment scale applications began (Nemes, 2011;Weynants et al., 2013). The following national and international data sets have been collected since that period: the Belgian (Vereecken et al., 1989), the German (NIBIS) (Horn et al., 1991), the French (SOILHYDRO) (Bruand et al., 2004), the Polish Soil Databank of arable mineral soils (BIGLEB) (Bieganowski et al., 2013), the Czech (HYPRESCZ) (Miháliková et al., 2013), the Hungarian (MARTHA) (Makó et al., 2010), the Portuguese (PROPSOLO) (Gonçalves et al., 2011), the Australian (ASRIS) (McKenzie et al., 2012) and the Brazilian (Tomasella et al., 2003); at continental scale the Hydraulic Properties of European Soils (HYPRES) (Wösten et al., 1999) and European HYdropedological Data Inventory (EU-HYDI) (Weynants et al., 2013); and at global level Unsaturated Soil Hydraulic Database (UNSODA) (Leij et al., 1996;Nemes et al., 2001), Data and Information System of the International Geosphere Biosphere Programme (IGBT-DIS) (Tempel et al., 1996), the Grenoble Catalogue of Soils (GRIZZLY) (Haverkamp et al., 1997), World Inventory of Soil Emission Potentials (WISE) (Batjes, 1997) and its further development ISRIC-WISE 3.1 (Batjes, 2009) and there is still an aim to further collect these data, for example Ottoni et al. (2014). However, it has been found that global PTFs cannot describe local specific conditions. ...
... Due to the uncertain effectiveness of such measures and their costs, further research is needed on the impact of conservation tillage on local biodiversity. There is evidence from previous studies that no-tillage cereal farming can reduce soil erosion in this region (Basch et al., 1996; Barreiros et al., 1996). A better understanding of the impact of the adoption of no-tillage systems on the steppic birds' habitat requirements would be a valuable contribution to sustainable regional planning. ...
... Releva, ainda, o facto, de o nível técnico de muitos agricultores ser deficiente e de não existirem estruturas que lhes assegurem um apoio técnico adequado. (Serrão et al., 2003(Serrão et al., /2004Serrão et al., 2006). Para avaliar a durabilidade dos efeitos da LRU, examinaram-se, neste trabalho, a produção e a composição florística da biomassa pratense em quatro ciclos culturais. ...
... In Mediterranean regions, some studies were carried out to characterize SOC and, to a lesser extent, STN stocks (Deng et al. 2009;Shrestha et al. 2009;Ramos et al. 2015;Schillaci et al. 2019). However, information on the longterm changes of the SOC and STN contents remains scarce in arid and semiarid Mediterranean regions. ...
... It mainly consists of non-humic substances that are labile and easily degraded by microorganisms [4,10]. Allochthonous DOM originates from leaves, eroded soils from the terrain, and organic wastes of anthropogenic origin, such as organic fertilizers, wastewaters, and industrial effluents [11]. Allochthonous DOM usually consists of humic substances with high molecular weight and lignin content, and it has the possibility to accumulate in sediments more than autochthonous components [9,10]. ...
... A aplicação de lamas residuais urbanas (LRU) em solos dedicados a pastagem é uma prática pouco frequente contudo, Domingues et al. (2007) e Martins et al. (2007) avaliaram os efeitos das LRU em ecossistemas pastoris e trabalhos de Serrão et al. (2003de Serrão et al. ( /2004) e Serrão et al. (2007a) referem aumentos de produção de MS de 57% e 82% com aplicações de 12 e 24 t.ha -1 de LRU em relação a PS não fertilizadas. ...
... This approach consists of submittes initial model parameters values arbitrarily to the mathematical model proposed until reaching as output the calculation of parameters and as a consequence the simulation of the infiltration phenomenon. This technique is well recognized in the literature, Ramos et al. [15] used this technique for three types of soil comparing the characteristic curves. These characteristic curves are based on input data obtained from infiltration tests and, also, with data acquired in the laboratory, obtaining reasonable convergence. ...