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Ignacio Irigoyen
Fertile Auro—Professional Association for Waste Management Strategies and Circular Economy, 36211 Vigo, Galicia, Spain

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Journal article
Published: 15 April 2019 in Spanish Journal of Agricultural Research
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Composting of organic wastes is a management strategy linked to circular economy models through the transformation of these wastes into an organic product, compost, which can be used as fertiliser, soil amendment or growing media. However, the concept of ‘compost quality’ is not enough defined to take a technical decision about which is its best use or application. In the last decade, different guidelines and regulations about organic fertilisers have been developed. For instance, in Spain the Fertilisers Regulation categorises compost under five kinds according to the raw materials used - organic amendment compost (OaC), manure compost (MaC), green compost (GrC), vermicompost (VC), ‘alperujo’ compost (AlC) -, and under three quality levels (A, B or C) depending exclusively on the heavy metals content. This work analyses the national database of all composts (307) marketed in Spain, considering the analytical parameters declared, with the objective of proposing a methodology to define a global quality index. For this assessment, two indicators are employed: a fertility indicator, related to the nutrients content, and a clean indicator, related to the heavy metals content. Results show an average compost formulation 2.5:2.5:2.5 (N:P2O5:K2O). MaC and OaC present the highest fertility indicator, whereas VC the lowest. Regarding the clean indicator, GrC, MaC and VC are cleaner than OaC. In the future, this new quality assessment should be completed by including other indicators related to physical and biological characteristic (e.g. porosity, stability/maturity, phytotoxicity) that could determine the most proper use of compost.

ACS Style

Belén Puyuelo; Joseba S. Arizmendiarrieta; Ignacio Irigoyen; Ramón Plana. Quality assessment of composts officially registered as organic fertilisers in Spain. Spanish Journal of Agricultural Research 2019, 17, e1101 .

AMA Style

Belén Puyuelo, Joseba S. Arizmendiarrieta, Ignacio Irigoyen, Ramón Plana. Quality assessment of composts officially registered as organic fertilisers in Spain. Spanish Journal of Agricultural Research. 2019; 17 (1):e1101.

Chicago/Turabian Style

Belén Puyuelo; Joseba S. Arizmendiarrieta; Ignacio Irigoyen; Ramón Plana. 2019. "Quality assessment of composts officially registered as organic fertilisers in Spain." Spanish Journal of Agricultural Research 17, no. 1: e1101.

Journal article
Published: 04 March 2018 in Sustainability
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This paper presents a three-year pilot experience of a new municipal waste management system developed in Navarre, Spain that integrates composting and hens. The aim of this new system is to motivate the general public to participate more in waste prevention programs. The Composter-Henhouse (CH) is a compact facility comprised of a henhouse and three composters. This is shared by 30 families who provide the organic part of their kitchen waste to feed the hens. Hens help speed up the composting process by depositing their droppings and turning the organic residue into compost. This study assesses the CH in terms of treatment capacity, the technical adequacy of the composting process, the quality and safety of the compost obtained and some social aspects. Over three years, the CH has managed nearly 16.5 tons of organic waste and produced approximately 5600 kg of compost and more than 6000 high-quality fresh eggs. No problems or nuisances have been reported and the level of animal welfare has been very high. The follow up of the composting process (temperature, volume reduction and compost maturity) and a physicochemical and microbiological analysis of the compost have ensured the proper management of the process. The level of involvement and user satisfaction has been outstanding and the project has presented clear social benefits.

ACS Style

Francesco Storino; Ramón Plana; Monika Usanos; David Morales; Pedro M. Aparicio-Tejo; Julio Muro; Ignacio Irigoyen. Integration of a Communal Henhouse and Community Composter to Increase Motivation in Recycling Programs: Overview of a Three-Year Pilot Experience in Noáin (Spain). Sustainability 2018, 10, 690 .

AMA Style

Francesco Storino, Ramón Plana, Monika Usanos, David Morales, Pedro M. Aparicio-Tejo, Julio Muro, Ignacio Irigoyen. Integration of a Communal Henhouse and Community Composter to Increase Motivation in Recycling Programs: Overview of a Three-Year Pilot Experience in Noáin (Spain). Sustainability. 2018; 10 (3):690.

Chicago/Turabian Style

Francesco Storino; Ramón Plana; Monika Usanos; David Morales; Pedro M. Aparicio-Tejo; Julio Muro; Ignacio Irigoyen. 2018. "Integration of a Communal Henhouse and Community Composter to Increase Motivation in Recycling Programs: Overview of a Three-Year Pilot Experience in Noáin (Spain)." Sustainability 10, no. 3: 690.

Journal article
Published: 01 January 2018 in American Journal of Plant Sciences
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ACS Style

Ana Belen Guerrero; Leticia San Emeterio; Itziar Domeño; Ignacio Irigoyen; Julio Muro. Steviol Glycoside Content Dynamics during the Growth Cycle of Stevia rebaudiana Bert. American Journal of Plant Sciences 2018, 09, 892 -901.

AMA Style

Ana Belen Guerrero, Leticia San Emeterio, Itziar Domeño, Ignacio Irigoyen, Julio Muro. Steviol Glycoside Content Dynamics during the Growth Cycle of Stevia rebaudiana Bert. American Journal of Plant Sciences. 2018; 09 (04):892-901.

Chicago/Turabian Style

Ana Belen Guerrero; Leticia San Emeterio; Itziar Domeño; Ignacio Irigoyen; Julio Muro. 2018. "Steviol Glycoside Content Dynamics during the Growth Cycle of Stevia rebaudiana Bert." American Journal of Plant Sciences 09, no. 04: 892-901.

Journal article
Published: 20 September 2017 in EKAIA Euskal Herriko Unibertsitateko Zientzia eta Teknologia Aldizkaria
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Bio-hondakinak lekuan bertan tratatzea ahalbidetzen duen konpostatze sistema berritzaile bat aurkezten da: Oilategi-Konpostagailua. Oilategi baten egitura du, eta konpostagailu bat edo gehiago eduki ditzake barnean, parte-hartzaileek etxean sortzen duten bio-hondakina konpostatzeko. Oiloek, moko eta atzaparren akzioa dela eta, konpostatze prozesua azkartzen dute. Noaingo Zentzumenen Parkean Noain (Nafarroan) aurkitzen den oilategi-konpostagailuaren 30 hilabetetako jarraipen emaitzak aurkezten dira. 30 familiak haien soberakinak eraman dituzte, datuak jaso dituzte eta trukean arrautzak, konposta eta egun batez oiloen zaintzaile izatearen esperientzia jaso dute. Ikerkuntza parte-hartzaile honetan datu gehienak familiek beraiek neurtu dituzte.

ACS Style

Ania Ibarguren; Inazio Irigoien; Joseba Arizmendiarrieta; Francesco Storino; Monica Usanoz. Noaingo oilategi-konpostagailua: etxeko soberakin organikoak aprobetxatzeko ikerkuntza parte-hartzailea. EKAIA Euskal Herriko Unibertsitateko Zientzia eta Teknologia Aldizkaria 2017, 163 -172.

AMA Style

Ania Ibarguren, Inazio Irigoien, Joseba Arizmendiarrieta, Francesco Storino, Monica Usanoz. Noaingo oilategi-konpostagailua: etxeko soberakin organikoak aprobetxatzeko ikerkuntza parte-hartzailea. EKAIA Euskal Herriko Unibertsitateko Zientzia eta Teknologia Aldizkaria. 2017; ():163-172.

Chicago/Turabian Style

Ania Ibarguren; Inazio Irigoien; Joseba Arizmendiarrieta; Francesco Storino; Monica Usanoz. 2017. "Noaingo oilategi-konpostagailua: etxeko soberakin organikoak aprobetxatzeko ikerkuntza parte-hartzailea." EKAIA Euskal Herriko Unibertsitateko Zientzia eta Teknologia Aldizkaria , no. : 163-172.

Journal article
Published: 01 February 2017 in Agriculture, Ecosystems & Environment
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ACS Style

M.E. Calleja-Cervantes; P.M. Aparicio-Tejo; P.J. Villadas; I. Irigoyen; J. Irañeta; Antonio José Fernández-González; M. Fernández-López; Sergio Menéndez. Rational application of treated sewage sludge with urea increases GHG mitigation opportunities in Mediterranean soils. Agriculture, Ecosystems & Environment 2017, 238, 114 -127.

AMA Style

M.E. Calleja-Cervantes, P.M. Aparicio-Tejo, P.J. Villadas, I. Irigoyen, J. Irañeta, Antonio José Fernández-González, M. Fernández-López, Sergio Menéndez. Rational application of treated sewage sludge with urea increases GHG mitigation opportunities in Mediterranean soils. Agriculture, Ecosystems & Environment. 2017; 238 ():114-127.

Chicago/Turabian Style

M.E. Calleja-Cervantes; P.M. Aparicio-Tejo; P.J. Villadas; I. Irigoyen; J. Irañeta; Antonio José Fernández-González; M. Fernández-López; Sergio Menéndez. 2017. "Rational application of treated sewage sludge with urea increases GHG mitigation opportunities in Mediterranean soils." Agriculture, Ecosystems & Environment 238, no. : 114-127.

Journal article
Published: 01 October 2016 in Waste Management
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Home composting is a powerful tool, which is spreading in different parts of the world, to reduce the generation of municipal waste. However, there is debate concerning the appropriateness, in terms of domestic hygiene and safety, of keeping a composter bin in the household deputed to kitchen waste of animal origin, such as meat or fish scraps and pet droppings. The purpose of our work was to study how the addition of meat scraps to household waste influences the composting process and the quality of the final compost obtained. We compared four raw material mixtures, characterized by a different combination of vegetable and meat waste and different ratios of woody bulking agent. Changes in temperature, mass and volume, phenotypic microbial diversity (by Biolog™) and organic matter humification were determined during the process. At the end of the experiment, the four composts were weighed and characterized by physicochemical analysis. In addition, the presence of viable weed seeds was investigated and a germination bioassay was carried out to determine the level of phytotoxicity. Finally, the levels of pathogens (Escherichia coli and Salmonella spp.) were also determined in the final compost. Here we show that the presence of meat waste as raw feedstock for composting in bins can improve the activity of the process, the physicochemical characteristics and maturity of the compost obtained, without significantly affecting its salinity, pH and phytotoxicity. Pathogen levels were low, showing that they can be controlled by an intensive management and proper handling of the composter bins.

ACS Style

Francesco Storino; Joseba S. Arizmendiarrieta; Ignacio Irigoyen; Julio Muro; Pedro M. Aparicio-Tejo. Meat waste as feedstock for home composting: Effects on the process and quality of compost. Waste Management 2016, 56, 53 -62.

AMA Style

Francesco Storino, Joseba S. Arizmendiarrieta, Ignacio Irigoyen, Julio Muro, Pedro M. Aparicio-Tejo. Meat waste as feedstock for home composting: Effects on the process and quality of compost. Waste Management. 2016; 56 ():53-62.

Chicago/Turabian Style

Francesco Storino; Joseba S. Arizmendiarrieta; Ignacio Irigoyen; Julio Muro; Pedro M. Aparicio-Tejo. 2016. "Meat waste as feedstock for home composting: Effects on the process and quality of compost." Waste Management 56, no. : 53-62.

Journal article
Published: 05 August 2016 in Compost Science & Utilization
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Composting in bins is one of the most practical home composting methods. There is currently a need for greater information to improve the management of the composting process and to create home composting programs, which ensure sustainable production of high quality compost. This study investigates how two aspects of the bin feeding regime—the feeding frequency and the amount of waste applied at each feed—influence the process's evolution and the quality of the compost. Compost bins were assayed after introducing the same amount of kitchen and garden waste according to three different frequencies: in a single batch, weekly, or every 3 weeks. A fourth treatment was applied to calculate the potential waste reduction achieved by the composting process, filling the bins to the brim on a weekly basis. Temperature, mass, and volume changes; the microbial diversity (by Biolog); and gas emissions (CO2, CH4, N2O, and NH3) were all determined during the process. At the end of the experiment, all of the composts were weighed and characterized. Results show that the main differences were very dependent on the quantity of waste provided. Large amounts of waste were added increasing the compost's temperature and maturity during the process, while slightly affecting the salinity and phytotoxicity of the final compost but without any clear effects on microbial diversity and gas emission. Therefore, from a technical point of view, the shared use of compost bins among several households (community composting) is preferable to individual use.

ACS Style

Francesco Storino; Sergio Menéndez; J. Muro; Pedro María Aparicio Tejo; Ignacio Irigoyen. Effect of Feeding Regime on Composting in Bins. Compost Science & Utilization 2016, 25, 71 -81.

AMA Style

Francesco Storino, Sergio Menéndez, J. Muro, Pedro María Aparicio Tejo, Ignacio Irigoyen. Effect of Feeding Regime on Composting in Bins. Compost Science & Utilization. 2016; 25 (2):71-81.

Chicago/Turabian Style

Francesco Storino; Sergio Menéndez; J. Muro; Pedro María Aparicio Tejo; Ignacio Irigoyen. 2016. "Effect of Feeding Regime on Composting in Bins." Compost Science & Utilization 25, no. 2: 71-81.

Journal article
Published: 01 November 2015 in Soil Biology and Biochemistry
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ACS Style

María Eréndira Calleja-Cervantes; Antonio José Fernández-González; Ignacio Irigoyen; Manuel Fernández-López; Pedro M. Aparicio-Tejo; Sergio Menéndez. Thirteen years of continued application of composted organic wastes in a vineyard modify soil quality characteristics. Soil Biology and Biochemistry 2015, 90, 241 -254.

AMA Style

María Eréndira Calleja-Cervantes, Antonio José Fernández-González, Ignacio Irigoyen, Manuel Fernández-López, Pedro M. Aparicio-Tejo, Sergio Menéndez. Thirteen years of continued application of composted organic wastes in a vineyard modify soil quality characteristics. Soil Biology and Biochemistry. 2015; 90 ():241-254.

Chicago/Turabian Style

María Eréndira Calleja-Cervantes; Antonio José Fernández-González; Ignacio Irigoyen; Manuel Fernández-López; Pedro M. Aparicio-Tejo; Sergio Menéndez. 2015. "Thirteen years of continued application of composted organic wastes in a vineyard modify soil quality characteristics." Soil Biology and Biochemistry 90, no. : 241-254.

Original article
Published: 14 May 2015 in European Journal of Soil Science
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An interesting alternative to landfills for disposing of organic residues is their addition to soil as composted organic residues. There is little information available about the long‐term benefits following prolonged periods of application. After 12 years of annual incorporation of organic amendments to the soil of a vineyard, three soil characteristics were analysed: mineral content, bacterial community and soil greenhouse gas (GHG) emissions. The organic amendments were (i) a pelletized organic compost (PEL) made from plant, animal and sewage sludge residues, (ii) a compost made from the organic fraction of municipal solid waste (OF‐MSW) and (iii) a stabilized sheep manure compost (SMC). Mineral fertilizer (NPK) and an unaltered control treatment were also included. Our results showed that long‐term application of treated residues as compost changed soil nutrient content, bacterial community and gas emission rates. For instance, SMC increased nutrients and soil organic matter (OM) throughout the experiment. There was a change in bacterial community structure, with an increase in the phylum Proteobacteria observed for all four treated soils, and an increase in the phylum Bacteroidetes for PEL, OF‐MSW and SMC treatments. Among the organically‐amended soils, the amount of Adhaeribacter increased by a factor of 2.5 times more than the control, which reported a total of 2.0% of the bacterial community compared with 5.6% for PEL, 5.2% for OF‐MSW and 5.0% for SMC. Adhaeribacter may be a genus that specializes in the degradation of residues in the different composts. The SMC treatment had the largest Chao1 estimator and was the most biodiverse of all treatments. These changes in bacterial community structure did not correlate with the observed GHG fluxes from the sampling day. The application of amendments did not affect N2O fluxes. However, the application of treatments slightly reduced the capacity for CH4 sequestration by soil with respect to the untreated soils. Compost is an effective method to increase soil fertility. Soil GHG emissions should be further evaluated.

ACS Style

M. E. Calleja-Cervantes; Sergio Menéndez; Antonio José Fernández-González; Ignacio Irigoyen; J. F. Cibriáin-Sabalza; Nicolas Toro; P. M. Aparicio-Tejo; Manuel Fernandez-Lopez. Changes in soil nutrient content and bacterial community after 12 years of organic amendment application to a vineyard. European Journal of Soil Science 2015, 66, 802 -812.

AMA Style

M. E. Calleja-Cervantes, Sergio Menéndez, Antonio José Fernández-González, Ignacio Irigoyen, J. F. Cibriáin-Sabalza, Nicolas Toro, P. M. Aparicio-Tejo, Manuel Fernandez-Lopez. Changes in soil nutrient content and bacterial community after 12 years of organic amendment application to a vineyard. European Journal of Soil Science. 2015; 66 (4):802-812.

Chicago/Turabian Style

M. E. Calleja-Cervantes; Sergio Menéndez; Antonio José Fernández-González; Ignacio Irigoyen; J. F. Cibriáin-Sabalza; Nicolas Toro; P. M. Aparicio-Tejo; Manuel Fernandez-Lopez. 2015. "Changes in soil nutrient content and bacterial community after 12 years of organic amendment application to a vineyard." European Journal of Soil Science 66, no. 4: 802-812.

Journal article
Published: 01 November 2013 in Acta Horticulturae
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ACS Style

I. Domeño; I. Irigoyen; J. Muro. DETERMINATION OF NITROGEN IMMOBILIZATION INDEX IN GROWING MEDIA: EFFECT OF INCUBATION TIME AND INOCULATION WITH COMPOST. Acta Horticulturae 2013, 81 -84.

AMA Style

I. Domeño, I. Irigoyen, J. Muro. DETERMINATION OF NITROGEN IMMOBILIZATION INDEX IN GROWING MEDIA: EFFECT OF INCUBATION TIME AND INOCULATION WITH COMPOST. Acta Horticulturae. 2013; (1013):81-84.

Chicago/Turabian Style

I. Domeño; I. Irigoyen; J. Muro. 2013. "DETERMINATION OF NITROGEN IMMOBILIZATION INDEX IN GROWING MEDIA: EFFECT OF INCUBATION TIME AND INOCULATION WITH COMPOST." Acta Horticulturae , no. 1013: 81-84.

Correction
Published: 08 February 2013 in Journal of Agricultural and Food Chemistry
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ACS Style

Javier Erro; Oscar Urrutia; Roberto Baigorri; Pedro M Aparicio-Tejo; Ignacio Irigoyen; Francesco Storino; Marcos Mandado; Jean Claude Yvin; Jose Maria Garcia-Mina. Correction to Organic Complexed Superphosphates (CSP): Physicochemical Characterization and Agronomical Properties. Journal of Agricultural and Food Chemistry 2013, 61, 1597 -1597.

AMA Style

Javier Erro, Oscar Urrutia, Roberto Baigorri, Pedro M Aparicio-Tejo, Ignacio Irigoyen, Francesco Storino, Marcos Mandado, Jean Claude Yvin, Jose Maria Garcia-Mina. Correction to Organic Complexed Superphosphates (CSP): Physicochemical Characterization and Agronomical Properties. Journal of Agricultural and Food Chemistry. 2013; 61 (7):1597-1597.

Chicago/Turabian Style

Javier Erro; Oscar Urrutia; Roberto Baigorri; Pedro M Aparicio-Tejo; Ignacio Irigoyen; Francesco Storino; Marcos Mandado; Jean Claude Yvin; Jose Maria Garcia-Mina. 2013. "Correction to Organic Complexed Superphosphates (CSP): Physicochemical Characterization and Agronomical Properties." Journal of Agricultural and Food Chemistry 61, no. 7: 1597-1597.

Journal article
Published: 01 November 2012 in Acta Horticulturae
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ACS Style

I. Irigoyen; J. Muro; B. Lasa; F. Storino; I. Domeño; I. Jauregui; M. Azpilikueta; P.M. Aparicio-Tejo. 15N NATURAL ABUNDANCE OF BARLEY AND SPINACH FERTILIZED WITH LEGUME RESIDUES, COMPOST OR INORGANIC NITROGEN. Acta Horticulturae 2012, 277 -282.

AMA Style

I. Irigoyen, J. Muro, B. Lasa, F. Storino, I. Domeño, I. Jauregui, M. Azpilikueta, P.M. Aparicio-Tejo. 15N NATURAL ABUNDANCE OF BARLEY AND SPINACH FERTILIZED WITH LEGUME RESIDUES, COMPOST OR INORGANIC NITROGEN. Acta Horticulturae. 2012; (938):277-282.

Chicago/Turabian Style

I. Irigoyen; J. Muro; B. Lasa; F. Storino; I. Domeño; I. Jauregui; M. Azpilikueta; P.M. Aparicio-Tejo. 2012. "15N NATURAL ABUNDANCE OF BARLEY AND SPINACH FERTILIZED WITH LEGUME RESIDUES, COMPOST OR INORGANIC NITROGEN." Acta Horticulturae , no. 938: 277-282.

Journal article
Published: 01 October 2012 in Scientia Agricola
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ACS Style

Miren Azpilicueta; Ignacio Irigoyen; Berta Lasa; Julio Muro; Pedro M. Aparicio-Tejo. Yield and quality of sugar snap pea in the Ebro Valley: sowing date and seed density. Scientia Agricola 2012, 69, 320 -326.

AMA Style

Miren Azpilicueta, Ignacio Irigoyen, Berta Lasa, Julio Muro, Pedro M. Aparicio-Tejo. Yield and quality of sugar snap pea in the Ebro Valley: sowing date and seed density. Scientia Agricola. 2012; 69 (5):320-326.

Chicago/Turabian Style

Miren Azpilicueta; Ignacio Irigoyen; Berta Lasa; Julio Muro; Pedro M. Aparicio-Tejo. 2012. "Yield and quality of sugar snap pea in the Ebro Valley: sowing date and seed density." Scientia Agricola 69, no. 5: 320-326.

Journal article
Published: 01 May 2012 in Acta Horticulturae
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I. Domeño; I. Irigoyen; J. Muro. QUANTIFYING YIELD LOSS OF AUBERGINE (SOLANUM MELONGENA L.) INDUCED BY LEAF AREA REDUCTION. Acta Horticulturae 2012, 413 -419.

AMA Style

I. Domeño, I. Irigoyen, J. Muro. QUANTIFYING YIELD LOSS OF AUBERGINE (SOLANUM MELONGENA L.) INDUCED BY LEAF AREA REDUCTION. Acta Horticulturae. 2012; (932):413-419.

Chicago/Turabian Style

I. Domeño; I. Irigoyen; J. Muro. 2012. "QUANTIFYING YIELD LOSS OF AUBERGINE (SOLANUM MELONGENA L.) INDUCED BY LEAF AREA REDUCTION." Acta Horticulturae , no. 932: 413-419.

Journal article
Published: 19 February 2012 in Plant Growth Regulation
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A careful control of the N nutritional status of grapevines can have a determining effect on wine characteristics; therefore a suitable management of N fertilization might allow some wine parameters to be modified, thereby improving product quality. The aim of this study was to determine the effect of foliar application of urea at different doses and different times of the growing season on the parameters of Sauvignon Blanc and Merlot grape juice. The research described herein involved Sauvignon Blanc and Merlot grapevines (V. vinifera L.) at a commercial vineyard and was conducted over 2 years. In the first year, N treatment involved a foliar application at a dose of 10 kg N ha−1 during veraison, whereas in the second year it involved a foliar urea application at two doses (10 and 50 kg N ha−1) and at three different times—3 weeks before veraison, during veraison and 3 weeks after veraison. In this second year, the urea applied at a dose of 10 kg N ha−1 was isotopically labelled with 1% 15N. Chemical parameters, yeast assimilable N, amino acid content, amino acid profile and N isotopic composition were determined for all treatments. Grape and grape-juice parameters for Merlot were found to be more affected by N fertilization than for Sauvignon Blanc and were also more affected during the second year than during the first year, thus indicating that the climatic characteristics of each campaign could affect these parameters. The yeast assimilable N in grape juice was found to be higher for late applications of foliar urea, with application of the higher dose of urea during veraison increasing the amino acid and proline contents in both varieties. The isotopic analysis data showed that the urea applied to leaves was transferred to the berries, with the maximum translocation in Sauvignon Blanc occurring for the post-veraison treatment and in Merlot for the veraison treatment. We can therefore conclude that foliar application of urea could modify grape juice quality and could therefore be used as a tool for obtaining quality wines.

ACS Style

Berta Lasa; Sergio Menéndez; Kepa Sagastizabal; Maria Erendira Calleja-Cervantes; Ignacio Irigoyen; Julio Muro; Pedro M Aparicio-Tejo; Idoia Ariz. Foliar application of urea to “Sauvignon Blanc” and “Merlot” vines: doses and time of application. Plant Growth Regulation 2012, 67, 73 -81.

AMA Style

Berta Lasa, Sergio Menéndez, Kepa Sagastizabal, Maria Erendira Calleja-Cervantes, Ignacio Irigoyen, Julio Muro, Pedro M Aparicio-Tejo, Idoia Ariz. Foliar application of urea to “Sauvignon Blanc” and “Merlot” vines: doses and time of application. Plant Growth Regulation. 2012; 67 (1):73-81.

Chicago/Turabian Style

Berta Lasa; Sergio Menéndez; Kepa Sagastizabal; Maria Erendira Calleja-Cervantes; Ignacio Irigoyen; Julio Muro; Pedro M Aparicio-Tejo; Idoia Ariz. 2012. "Foliar application of urea to “Sauvignon Blanc” and “Merlot” vines: doses and time of application." Plant Growth Regulation 67, no. 1: 73-81.

Research article
Published: 17 February 2012 in Journal of Agricultural and Food Chemistry
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A new type of superphosphate (organic complexed superphosphate (CSP)) has been developed by the introduction of organic chelating agents, preferably a humic acid (HA), into the chemical reaction of single superphosphate (SSP) production. This modification yielded a product containing monocalcium phosphate complexed by the chelating organic agent through Ca bridges. Theoretically, the presence of these monocalcium–phosphate–humic complexes (MPHC) inhibits phosphate fixation in soil, thus increasing P fertilizer efficiency. This study investigateed the structural and functional features of CSP fertilizers produced employing diverse HA with different structural features. To this end were used complementary analytical techniques: solid-phase 31P NMR, 13C NMR, laser-confocal microscopy, X-ray diffraction, and molecular modeling. Finally, the agronomical efficiency of four CSP have been compared with that of SSP as P sources for wheat plants grown in both alkaline and acidic soils in greenhouse pot trials under controlled conditions. The results obtained from the diverse analytical studies showed the formation of MPHC in CSP. Plant–soil studies showed that CSP products were more efficient than SSP in providing available phosphate for wheat plants cultivated in various soils with different physicochemical features. This fact is probably associated with the ability of CSP complexes to inhibit phosphate fixation in soil.

ACS Style

Javier Erro; Oscar Urrutia; Roberto Baigorri; Pedro M Aparicio-Tejo; Ignacio Irigoyen; Francesco Storino; Marcos Mandado; Jean Claude Yvin; Jose Maria Garcia-Mina. Organic Complexed Superphosphates (CSP): Physicochemical Characterization and Agronomical Properties. Journal of Agricultural and Food Chemistry 2012, 60, 2008 -2017.

AMA Style

Javier Erro, Oscar Urrutia, Roberto Baigorri, Pedro M Aparicio-Tejo, Ignacio Irigoyen, Francesco Storino, Marcos Mandado, Jean Claude Yvin, Jose Maria Garcia-Mina. Organic Complexed Superphosphates (CSP): Physicochemical Characterization and Agronomical Properties. Journal of Agricultural and Food Chemistry. 2012; 60 (8):2008-2017.

Chicago/Turabian Style

Javier Erro; Oscar Urrutia; Roberto Baigorri; Pedro M Aparicio-Tejo; Ignacio Irigoyen; Francesco Storino; Marcos Mandado; Jean Claude Yvin; Jose Maria Garcia-Mina. 2012. "Organic Complexed Superphosphates (CSP): Physicochemical Characterization and Agronomical Properties." Journal of Agricultural and Food Chemistry 60, no. 8: 2008-2017.

Journal article
Published: 26 August 2011 in Scientia Horticulturae
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Organic growing media employed in hydroponic crops could change their characteristics due to organic matter degradation during culture growing season. Traditional methods for measuring the stability of growing media (Biochemical Stability Index, Lemaire) do not take into account the activity of crop roots, nutrients in the growing media or microorganism presence. Three experiments were performed to determine the stability of six organic substrates. Stability was measured as the percentage of organic matter remaining in substrates. In experiment one (short duration and small scale without plant) 500 ml samples were incubated for 180 days following original methodology proposed by Lemaire (L) and with three modifications: (1) Inoculation with compost (I), (2) watered with nutrient solution (NS), and (3) both combined (I + NS). In experiment two (Long duration, medium scale) 10 l samples were incubated with and without a lolium crop for 720 days in a greenhouse. In experiment 3 stability of each substrate was real measured in 20 l hydroponic bags after use in four cycles of tomato production in a commercial greenhouse (2 years). All incubations were triplicated. Physicochemical properties of substrates were measured. Correlations between stability estimated in experiment one and two and real determinations in experiment three were analyzed. Lemaire methodology modified by adding and inoculum an nutrients (I + NS) was the best method to estimate the stability of organic growing media measured in real conditions in experiment 3. This new method greatly improves the estimation performed with original Lemaire methodology. Long term incubations with lolium also reproduce well the real stability of growing media but this methodology is not feasible because it requires four times longer and the amount of substrate required is 20 times larger for each sample.

ACS Style

Itziar Domeño; Ignacio Irigoyen; J. Muro. Comparison of traditional and improved methods for estimating the stability of organic growing media. Scientia Horticulturae 2011, 130, 335 -340.

AMA Style

Itziar Domeño, Ignacio Irigoyen, J. Muro. Comparison of traditional and improved methods for estimating the stability of organic growing media. Scientia Horticulturae. 2011; 130 (1):335-340.

Chicago/Turabian Style

Itziar Domeño; Ignacio Irigoyen; J. Muro. 2011. "Comparison of traditional and improved methods for estimating the stability of organic growing media." Scientia Horticulturae 130, no. 1: 335-340.

Journal article
Published: 01 April 2011 in Scientia Agricola
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Nitrate leaching as a result of excessive application of N-fertilizers and water use is a major problem of vulnerable regions. The farming of maize requires high N fertilization and water inputs in Spain. Isotopic techniques may provide information on the processes involved in the N and C cycles in farmed areas. The aim of this work was studying the impact of sprinkler and furrow irrigation and N input on maize (Zea mays L.) yields, and whether isotopic composition can be used as indicator of best farming practices. Trials were set up in Tudela (Spain) with three rates of N fertilization (0, 240 and 320 kg urea-N ha-1) and two irrigation systems (furrow and sprinkler). Yield, nitrogen content, irrigation parameters, N fate and C and N isotope composition were determined. The rate of N fertilization required to obtain the same yield is considerably higher under furrow irrigation, since the crop has less N at its disposal in furrow irrigation as a result of higher loss of nitrogen by NO3--N leaching and denitrification. A lower δ13C in plants under furrow irrigation was recorded.The δ15N value of plant increased with the application rate of N under furrow irrigation.

ACS Style

Berta Lasa; Iosu Irañeta; Julio Muro; Ignacio Irigoyen; Pedro María Aparicio Tejo. Isotopic composition of maize as related to N-fertilization and irrigation in the Mediterranean region. Scientia Agricola 2011, 68, 182 -190.

AMA Style

Berta Lasa, Iosu Irañeta, Julio Muro, Ignacio Irigoyen, Pedro María Aparicio Tejo. Isotopic composition of maize as related to N-fertilization and irrigation in the Mediterranean region. Scientia Agricola. 2011; 68 (2):182-190.

Chicago/Turabian Style

Berta Lasa; Iosu Irañeta; Julio Muro; Ignacio Irigoyen; Pedro María Aparicio Tejo. 2011. "Isotopic composition of maize as related to N-fertilization and irrigation in the Mediterranean region." Scientia Agricola 68, no. 2: 182-190.

Journal article
Published: 01 March 2011 in Journal of Plant Physiology
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The application of urease inhibitors in conjunction with urea fertilizers as a means of reducing N loss due to ammonia volatilization requires an in-depth study of the physiological effects of these inhibitors on plants. The aim of this study was to determine how the urease inhibitor N-(n-butyl) thiophosphoric triamide (NBPT) affects N metabolism in pea and spinach. Plants were cultivated in pure hydroponic culture with urea as the sole N source. After 2 weeks of growth for pea, and 3 weeks for spinach, half of the plants received NBPT in their nutrient solution. Urease activity, urea and ammonium content, free amino acid composition and soluble protein were determined in leaves and roots at days 0, 1, 2, 4, 7 and 9, and the NBPT content in these tissues was determined 48 h after inhibitor application. The results suggest that the effects of NBPT on spinach and pea urease activity differ, with pea being most affected by this treatment, and that the NBPT absorbed by the plant caused a clear inhibition of the urease activity in pea leaf and roots. The high urea concentration observed in leaves was associated with the development of necrotic leaf margins, and was further evidence of NBPT inhibition in these plants. A decrease in the ammonium content in roots, where N assimilation mainly takes place, was also observed. Consequently, total amino acid contents were drastically reduced upon NBPT treatment, indicating a strong alteration of the N metabolism. Furthermore, the amino acid profile showed that amidic amino acids were major components of the reduced pool of amino acids. In contrast, NBPT was absorbed to a much lesser degree by spinach plants than pea plants (35% less) and did not produce a clear inhibition of urease activity in this species.

ACS Style

Saioa Cruchaga; Ekhiñe Artola; Berta Lasa; Idoia Ariz; Ignacio Irigoyen; Jose Fernando Moran; Pedro M. Aparicio-Tejo. Short term physiological implications of NBPT application on the N metabolism of Pisum sativum and Spinacea oleracea. Journal of Plant Physiology 2011, 168, 329 -336.

AMA Style

Saioa Cruchaga, Ekhiñe Artola, Berta Lasa, Idoia Ariz, Ignacio Irigoyen, Jose Fernando Moran, Pedro M. Aparicio-Tejo. Short term physiological implications of NBPT application on the N metabolism of Pisum sativum and Spinacea oleracea. Journal of Plant Physiology. 2011; 168 (4):329-336.

Chicago/Turabian Style

Saioa Cruchaga; Ekhiñe Artola; Berta Lasa; Idoia Ariz; Ignacio Irigoyen; Jose Fernando Moran; Pedro M. Aparicio-Tejo. 2011. "Short term physiological implications of NBPT application on the N metabolism of Pisum sativum and Spinacea oleracea." Journal of Plant Physiology 168, no. 4: 329-336.

Article
Published: 02 September 2010 in American Potato Journal
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Worldwide, potato (Solanum tuberosum L.) crops cover 18 × 106 ha, corresponding to a production of 314 × 106 t. The importance of this crop makes it crucial to control production losses and quality defects due to foliar injury, whether by natural or mechanical causes. The artificial defoliation of potatoes is a common technique used to investigate the correlation between damage caused by either hail or insects and yield. The aim of this study was to evaluate simulated hail damage on different cultivar potatoes of varying maturity to quantify the commercial yield reduction attributable to different defoliation levels through the potato crop cycle. Eight trials were carried out in the Central Ebro Valley (northern Spain) over a period of 4 years with three potato cultivars: Jaerla, Red-Pontiac, and Baraka. Four levels of defoliation (no defoliation, slight defoliation, medium defoliation, and high defoliation) were carried out in several phenological stages. The crop yield losses for each level of defoliation were calculated by correlating the percentage of defoliation applied and the resulting percentage of yield loss. Yield reduction equations were calculated for each trial and phenological stage. Damaged produced during tuber formation or flowering considerably reduced yield. In contrast, defoliations after tubers had completed growth barely affected yields. Differences among cultivars with respect to yield losses were noted regardless of location and year. The early cultivar (Jaerla) recovered worse than the longer-cycle varieties (Red Pontiac and Baraka) as concerns defoliation effects. Effects on yield were similar at the different locations. The regression equations presented may be used for modeling the yield reduction due to defoliation treatments caused by different biotic and abiotic agents. En todo el mundo, los cultivos de papa (Solanum tuberosum L.) cubren 18 × 106 ha, lo que corresponde a una producción de 314 × 106 t. La importancia de este cultivo hace crucial el control de las pérdidas de producción y de los defectos en calidad debido al daño foliar, ya fuera por causas naturales o mecánicas. La defoliación artificial de papa es una técnica común usada para investigar la correlación entre el daño causado por granizo o insectos y rendimiento. El propósito de este estudio fue evaluar el daño simulado por granizo en diferentes variedades de papa de diversa madurez, para cuantificar la reducción comercial en rendimiento atribuible a diferentes niveles de defoliación a lo largo del ciclo de cultivo de la papa. Se hicieron ocho ensayos en el valle central del Ebro (al norte de España) en un período de cuatro años con tres variedades de papa: Jaerla, Red-Pontiac, y Baraka. Se efectuaron cuatro niveles de defoliación (sin defoliación, ligera, media, y alta defoliación) en varios estados fenológicos. Se calcularon las pérdidas en el rendimiento del cultivo para cada nivel de defoliación, mediante la correlación del porcentaje de defoliación aplicado y el porcentaje resultante de pérdida en el rendimiento. Las ecuaciones de reducción del rendimiento se calcularon para cada ensayo y estado fenológico. El daño producido durante la formación del tubérculo o en floración redujeron considerablemente los rendimientos. En contraste, las defoliaciones después de que los tubérculos habían completado su crecimiento afectaron los rendimientos muy escasamente. Se notaron diferencias entre las variedades respecto a las pérdidas de rendimiento, independientemente de la localidad y el año. La variedad precoz (Jaerla) fue la peor en recuperarse respecto a las tardías (Red-Pontiac y Baraka) en lo relacionado a las consecuencias por la defoliación. Los efectos en el rendimiento fueron similares en las diferentes localidades. Las ecuaciones de regresión presentadas podrían usarse para modelar la reducción en rendimiento debido a los tratamientos de defoliación causados por diversos agentes bióticos y abióticos.

ACS Style

Ignacio Irigoyen; Itziar Domeño; Julio Muro. Effect of Defoliation by Simulated Hail Damage on Yield of Potato Cultivars with Different Maturity Performed in Spain. American Potato Journal 2010, 88, 82 -90.

AMA Style

Ignacio Irigoyen, Itziar Domeño, Julio Muro. Effect of Defoliation by Simulated Hail Damage on Yield of Potato Cultivars with Different Maturity Performed in Spain. American Potato Journal. 2010; 88 (1):82-90.

Chicago/Turabian Style

Ignacio Irigoyen; Itziar Domeño; Julio Muro. 2010. "Effect of Defoliation by Simulated Hail Damage on Yield of Potato Cultivars with Different Maturity Performed in Spain." American Potato Journal 88, no. 1: 82-90.