Laura Sánchez-Martín
Technical University of Madrid
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Laura Sánchez-Martín.
Science of The Total Environment | 2014
Diego Abalos; Laura Sánchez-Martín; Lourdes García-Torres; Jan Willem van Groenigen; Antonio Vallejo
Drip irrigation combined with split application of fertilizer nitrogen (N) dissolved in the irrigation water (i.e. drip fertigation) is commonly considered best management practice for water and nutrient efficiency. As a consequence, its use is becoming widespread. Some of the main factors (water-filled pore space, NH4(+) and NO3(-)) regulating the emissions of greenhouse gases (i.e. N2O, CO2 and CH4) and NO from agroecosystems can easily be manipulated by drip fertigation without yield penalties. In this study, we tested management options to reduce these emissions in a field experiment with a melon (Cucumis melo L.) crop. Treatments included drip irrigation frequency (weekly/daily) and type of N fertilizer (urea/calcium nitrate) applied by fertigation. Crop yield, environmental parameters, soil mineral N concentrations and fluxes of N2O, NO, CH4 and CO2 were measured during 85 days. Fertigation with urea instead of calcium nitrate increased N2O and NO emissions by a factor of 2.4 and 2.9, respectively (P<0.005). Daily irrigation reduced NO emissions by 42% (P<0.005) but increased CO2 emissions by 21% (P<0.05) compared with weekly irrigation. We found no relation between irrigation frequency and N2O emissions. Based on yield-scaled Global Warming Potential as well as NO cumulative emissions, we conclude that weekly fertigation with a NO3(-)-based fertilizer is the best option to combine agronomic productivity with environmental sustainability. Our study shows that adequate management of drip fertigation, while contributing to the attainment of water and food security, may provide an opportunity for climate change mitigation.
Plant and Soil | 2010
Ana Meijide; Laura Cardenas; Laura Sánchez-Martín; Antonio Vallejo
A field experiment was carried out in a non-irrigated barley crop (Hordeum vulgare L. cv Bornova) with the aims of evaluating the effects of applying organic and inorganic fertilizers on soil carbon dioxide (CO2) and methane (CH4) fluxes and assessing the residual effect of these fertilizers after the first rainfall events of autumn. Both soil CO2 and CH4 fluxes seemed to be dependent on temperature. The soils were a net sink for CH4 and the application of inorganic fertilizers reduced the sink potential. CO2 emissions increased following the application of fertilizers and after the first rainfall events in the autumn. The use of digested pig slurry caused a reduction of the CO2 equivalents produced per unit of crop yield.
Water Research | 2004
Libertad García-Villada; Marcos Rico; María Altamirano; Laura Sánchez-Martín; Victoria López-Rodas; Eduardo Costas
Soil Biology & Biochemistry | 2006
Antonio Vallejo; U. Skiba; Lourdes García-Torres; Augusto Arce; Susana López-Fernández; Laura Sánchez-Martín
Agriculture, Ecosystems & Environment | 2007
Ana Meijide; J. A. Díez; Laura Sánchez-Martín; Susana López-Fernández; Antonio Vallejo
Agriculture, Ecosystems & Environment | 2012
Alberto Sanz-Cobena; Laura Sánchez-Martín; Lourdes García-Torres; Antonio Vallejo
Soil Biology & Biochemistry | 2008
Laura Sánchez-Martín; Antonio Vallejo; Jan Dick; U. Skiba
Soil Biology & Biochemistry | 2008
Laura Sánchez-Martín; Augusto Arce; Alejandro Benito; Lourdes García-Torres; Antonio Vallejo
Agriculture, Ecosystems & Environment | 2010
Laura Sánchez-Martín; Ana Meijide; Lourdes García-Torres; Antonio Vallejo
Biosensors and Bioelectronics | 2004
María Altamirano; Libertad García-Villada; Mar Agrelo; Laura Sánchez-Martín; Luis Martín-Otero; Antonio Flores-Moya; Marcos Rico; Victoria López-Rodas; Eduardo Costas