Research Center Agraria Of La Finca La Orden Valdesequera

Quintanar de la Orden, Spain

Research Center Agraria Of La Finca La Orden Valdesequera

Quintanar de la Orden, Spain
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Gutierrez-Perera J.M.,Research Center Agraria Of La Finca La Orden Valdesequera | Gragera-Facundo J.,Research Center Agraria Of La Finca La Orden Valdesequera | Gil-Torralvo C.G.,Research Center Agraria Of La Finca La Orden Valdesequera | Acero-Gomez F.,Research Center Agraria Of La Finca La Orden Valdesequera
Acta Horticulturae | Year: 2012

Ten Spanish landraces of onion (Allium cepa L.), nine of them coming from the genebank of the COMAV, and one commercial cultivar, as control, were assayed during 2009 in the Centro de Investigación Agraria Finca "La Orden-Valdesequera", Extremadura (Spain). The trial was conducted using techniques that conform to legislation in organic agriculture. The harvested bulbs were graded by equatorial diameter into five categories according to quality standard for onions in the Spanish market. Total commercial yield (t ha-1), percentage of weight of each category over total weight and average bulb weight (g) were obtained. A sample from each cultivar was used to measure refractive index (°Brix) and pH. Average polar and equatorial diameters (mm) were determined and IPGRI descriptor was used in the morphological characterization of the following bulb characters: bulb shape, population uniformity of bulb shape, bulb fresh colour and bulb skin colour. The average yields of five landraces were higher than the rest of cultivars, four of them exceeding more than twice the production of the control. These five landraces had an equatorial diameter greater than 120 mm in more than 60% of their production and an average bulb weight over 500 g. The average °Brix values of the landraces ranged between 6.0±0.1 and 10.0±0.7. Negative correlations between soluble solids content and average bulb weight and average polar and equatorial diameters, were detected. The °Brix values were typical of onion for fresh market due to the low suitability for conservation. These results show that it could be possible the commercial production of some of the tested landraces under organic agriculture techniques.


Gragera-Facundo J.,Research Center Agraria Of La Finca La Orden Valdesequera | Daza-Delgado C.,Research Center Agraria Of La Finca La Orden Valdesequera | Gil-Torralvo C.G.,Research Center Agraria Of La Finca La Orden Valdesequera | Gutierrez-Perera J.M.,Research Center Agraria Of La Finca La Orden Valdesequera | Esteban-Perdigon A.,Research Center Agraria Of La Finca La Orden Valdesequera
Acta Horticulturae | Year: 2012

Three cultivars of pepper have been tested in open field during 2009 at "La Orden", an experimental farm in the Guadiana Valley (Badajoz), using two different growing systems: organic and conventional. The cultivars were 'BGV-000604', 'Corera', both "morrón" type, and 'BGV-005137', "piquillo" type. 'BGV-000604' and 'BGV-005137' are Spanish landraces which were selected because of their good yield and quality in previous trials. 'Corera' is a widely grown commercial hybrid cultivar. The two growing systems differ one from the other in the kind of manure applied (organic vs. mineral), the control of pests and diseases (according to organic vs. conventional rules) and the weeding control (manual vs. chemical). There were no significant differences between the tested growing systems for the number of fruits per plant, and only the cultivar 'BGV-000604' showed significant differences for commercial yield between these two growing systems. Furthermore, for these same characters there were no significant differences between the landrace and the commercial "morrón" type cultivars. These results showed that the organic growing let to obtain the same yield as the conventional one, although in the organic system three manual weeding and a higher number of phytosanitary treatments were necessary.


Gragera-Facundo J.,Research Center Agraria Of La Finca La Orden Valdesequera | Gil-Torralvo C.G.,Research Center Agraria Of La Finca La Orden Valdesequera | Gutierrez-Perera J.M.,Research Center Agraria Of La Finca La Orden Valdesequera | Cano-Suarez J.M.,Research Center Agraria Of La Finca La Orden Valdesequera | And 2 more authors.
Acta Horticulturae | Year: 2012

In 2009, twenty cultivars of sweet melon, var. inodorus, were grown in "La Orden" farm (Guadajira, Badajoz) using organic production techniques. Nineteen of them were Spanish landraces and the other one, as a control, was a commercial hybrid cultivar named 'Seda'. Some agronomic (level of cucumber mildew disease resistance, commercial yield and fruit weight) and quality (°Brix, pH and sensory quality) characters were evaluated. For the level of cucumber mildew disease resistance, there were six sensible cultivars, four tolerant, eight (control included) resistant and three segregant. Commercial yield ranged from 20 to 73 t ha-1, with fifteen landraces overcoming the control. Fruit weight ranged between 1.04 and 2.79 kg per fruit. Some of the traditional cultivars showed high °Brix and very good sensory quality as the control did. There were positive correlations between the level of cucumber mildew disease resistance and the characters fruit weight, °Brix, pH and sensory quality, between yield and fruit weight, between fruit weight and the characters °Brix and pH, and between °Brix and the characters pH and sensory quality. According to agronomic and quality results, the best cultivars were 'BGV- 010039', 'BGV-010046', 'Cm-15' and 'MU-C-47'. These cultivars could be recommended for commercial growing under organic production system if they confirm their good performance.


Gragera-Facundo J.,Research Center Agraria Of La Finca La Orden Valdesequera | Gutierrez-Perera J.M.,Research Center Agraria Of La Finca La Orden Valdesequera | Gil-Torralvo C.G.,Research Center Agraria Of La Finca La Orden Valdesequera | Avila-Lozano C.,Research Center Agraria Of La Finca La Orden Valdesequera | And 2 more authors.
Acta Horticulturae | Year: 2011

61 tomato landraces, 54 of them Spanish, and one commercial cultivar have been grown and morphologically characterized in one or two years using the IPGRI tomato descriptors. 60, both morphologic and agronomic, characters were measured in 2007, 67 in 2008 and 61 in 2009. Analysis of variance, correlation analysis, and principal component analysis were made for the data obtained every year. With the results of the data analyses non discriminatory characters can be discarded. The total number of different discriminatory characters selected was 48: four of them were discriminatory every year, ten in two years and the remainder in only one. Cluster classifications of the landraces were made and discussed with these discriminatory characters.

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