Papers by Mariela Curetti
Acta horticulturae, Sep 1, 2022
Cuadro 1.1. Elementos químicos esenciales para las plantas y su concentración habitual en los tej... more Cuadro 1.1. Elementos químicos esenciales para las plantas y su concentración habitual en los tejidos vegetales.
Viticultura enología profesional, 2006
Acta horticulturae, Oct 1, 2018
Fruit trees photosynthesis is determined by abiotic factors affecting crop productivity. The aim ... more Fruit trees photosynthesis is determined by abiotic factors affecting crop productivity. The aim of this study was to evaluate the influence of magnesium nutritional status and exposure to solar radiation in the photosynthetic capacity of leaves of Malus domestica 'Cripp's Pink'. A two-factor experiment was conducted: high (+Mg) and low (-Mg) foliar Mg content (0.26 and 0.19%, respectively) in leaves were exposed to high (HR) and low (LR) solar radiation (1600 and 600 μmol m-2 s-1 , respectively). Chlorophyll concentration, maximum quantum yield of photosystem-II (Fv/Fm) and net photosynthesis rate was determined in leaves. HR and LR-Mg leaves had 11.5 and 1.8% less chlorophyll concentration respectively than HR and LR +Mg leaves; no effects were observed in chlorophyll concentration by exposure. Fv/Fm was affected by sun exposition but not by Mg content. In HR leaves Fv/Fm was 5-6% lower than in LR leaves. Photosynthesis was affected by magnesium content when leaves where exposed to high solar radiation. Maximum net photosynthesis in HR +Mg leaves was 20.0 μmol m-2 s-1 , while in HR-Mg was 11.1 μmol m-2 s-1. Net photosynthesis in LR leaves was not affected by Mg content. These results show that apple leaves photosynthetic capacity could be affected by lower Mg content when exposed to high solar radiation.
Scientia Horticulturae, Feb 1, 2013
The fruit size of early ripening pear varieties is one of the most important attributes for its q... more The fruit size of early ripening pear varieties is one of the most important attributes for its quality. In pear (Pyrus communis L.) the thinning effect of urea is controversial, even if urea sprays increase in general the average fruit size. We therefore tested the hypothesis that foliar-applied urea at bloom also plays an important nutritional role. Trials were carried out in two orchards of the experimental farm of the INTA Alto Valle research station, in the province of Rio Negro, Argentina on mature trees of the cv. "Williams Bon chretien" on seedling. Urea (5%, w/v) application at full bloom had a slight effect of fruit thinning of fruitlets, but increased fruit size and the number of cells per fruit. Sprayed spurs showed larger fruit weight before a significant difference in fruit number per spur was observed. The uptake of N from urea, measured by the aid 15 N techniques, enhanced N concentration and contents of flowers and spur leaves by about 10%. Although we cannot exclude that the thinning effect of urea has contributed to the enhancing of the fruit size and the number of cells per fruits, our data indicated that before the thinning effect of urea occurred, the fruit size already benefited from the foliar N supply due to an enhanced leaf and flower N concentration. Due to the both the thinning and the nutritional effects, the supply of urea early of the season is therefore a powerful and relatively inexpensive tool for enhancing fruit size in pear trees.
Acta horticulturae, Jun 1, 2022
Apple Academic Press eBooks, Dec 17, 2020
La poda en las plantaciones comerciales de frutales requiere del empleo de mano de obra calificad... more La poda en las plantaciones comerciales de frutales requiere del empleo de mano de obra calificada para lograr que esta intervención sea efectiva a la hora de formar la planta, regular la carga y obtener una producción en el volumen y la calidad requerida. Casi la totalidad de las plantaciones se podan manualmente debido a la complejidad que significa contar con equipos mecánicos que seleccionen los cortes de acuerdo a criterios fisiológicos. El aumento del costo de mano de obra, pero fundamentalmente su escases para tareas manuales especializadas, condujo a la realización de experiencias para evaluar la factibilidad de podar mecánicamente los frutales.EEA Alto ValleFil: Magdalena, Jorge Carlos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Raffo Benegas, Maria Dolores. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Curetti, Mariela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; ArgentinaFil: Romitelli, Mauricio Hernan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Alto Valle; Argentin
* Dosis recomendada para monte adulto de frutales de pepita con riego gravitacional y rendimiento... more * Dosis recomendada para monte adulto de frutales de pepita con riego gravitacional y rendimiento de 50 ton/ha. La composición de los fertilizantes está expresado en grado (% de cada nutriente) y no en grado equivalente (%P2O5, K2O, etc) como suele aparecer en los marbetes de los mismos.
Todos los derechos reservados. No se permite la reproducción total o parcial, la distribución o l... more Todos los derechos reservados. No se permite la reproducción total o parcial, la distribución o la transformación de esta publicación, en ninguna forma o medio, ni el ejercicio de otras facultades reservadas sin el permiso previo y escrito del editor. Su infracción está penada por las leyes vigentes.
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Papers by Mariela Curetti