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Mostrando ítems 1-17 de 17
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Diversified crop sequences to reduce soil nitrogen mining in agroecosystems
Novelli, Leonardo Esteban; Caviglia, Octavio; Jobbagy Gampel, Esteban Gabriel; Sadras, Victor Oscar (Elsevier, 2022-10)Nitrogen (N) is the primary driver of increased global food supply, but has environmental consequences from both under- and over-fertilisation. While over-fertilisation and reactive nitrogen release onto the environment ... -
Effect of elevated temperature on the onset and rate of mesocarp cell death in berries of Shiraz and Chardonnay and its relationship with berry shrivel
Bonada, Marcos; Sadras, Victor Oscar; Fuentes, Sigfredo (Wiley, 2013-02)Background and Aim: Berry water loss at late stages of ripening is a cultivar dependent‐trait correlated with mesocarp cell death. We tested the hypothesis that elevated temperature anticipates the onset and increases the ... -
Effect of irrigation and tree density on vegetative growth, oil yield and water use efficiency in young olive orchard under arid conditions in Mendoza, Argentina
Trentacoste, Eduardo Rafael; Puertas, Carlos Marcelo; Sadras, Victor Oscar (2015-11)We measured the effects of planting density (238, 317 and 476 trees ha−1), irrigation (fully irrigated control vs. deficit irrigation) and their interaction on the vegetative growth, yield and irrigation water use efficiency ... -
Effects of the source:sink ratio on the phenotypic plasticity of stem water potential in olive (Olea europaea L.)
Trentacoste, Eduardo Rafael; Sadras, Victor Oscar; Puertas, Carlos Marcelo (Society for Experimental Biology, 2011-06)The aims of this work were to quantify (i) the effect of the source:sink ratio on stem water potential (SWP) and (ii) the phenotypic plasticity of SWP and its relationship to oil yield components in olive. Trees with a ... -
Elevated temperature and water stress accelerate mesocarp cell death and shrivelling, and decouple sensory traits in Shiraz berries
Bonada, Marcos; Sadras, Victor Oscar; Moran, Martin; Fuentes, Sigfredo (2013-11)Both water deficit and elevated temperature are likely to accelerate shrivelling in Shiraz berries with consequences for fruit yield and quality. The process of shrivelling is partially related to mesocarp cell death and ... -
Functional crop types are more important than diversity for the productivity, profit and risk of crop sequences in the inner Argentinean Pampas
Videla Mensegue, Horacio Rogelio; Caviglia, Octavio; Sadras, Victor Oscar (Elsevier, 2022-02)CONTEXT: Over the last 250 years, many natural ecosystems in South America, including the Inner Pampas of Argentina, evolved into extremely simplified agroecosystems. In the last 25 years, simplified soybean-based crop ... -
High temperature during the budswell phase of grapevines increases shoot water transport capacity
Galat Giorgi, Mirta Eugenia; Keller, Markus; Sadras, Victor Oscar; Roig Junent, Fidel Alejandro; Perez Peña, Jorge Esteban (Elsevier, 2020-09)Knowledge about heat acclimation in perennial plants is limited. Our hypotheses were (i) that high temperature during budswell before budbreak elicits acclimation in grapevines that is mediated by greater water transport ... -
Impact of elevated temperature and water deficit on the chemical and sensory profiles of Barossa Shiraz grapes and wines
Bonada, Marcos; Jeffery, David William; Petrie, Paul R.; Moran, Martin; Sadras, Victor Oscar (Wiley, 2015-06)Background and Aims: Interactions are the main causes of complexity in field experiments; however, no studies have combined water and temperature regimes in field‐growing vines. Here we assessed grape and wine attributes ... -
Impacts of vegetative and reproductive plasticity associated with tillering in maize crops in low-yielding environments: a physiological framework
Rotili, Diego Hernán; Sadras, Victor Oscar; Abeledo, Leonor Gabriela; Ferreyra, Juan Matías; Micheloud, José Roberto; Duarte, Gustavo; Giron, Paula; Ermácora, Matías; Maddonni, Gustavo Angel (Elsevier, 2021-05)Selection for maize (Zea mays L.) grain yield in high-yielding environments at high population densities has favored a compact phenotype tolerant to crowding stress, bearing a single, well-grained ear. However, by contributing ... -
Interactive effects of high temperature and water deficit on Malbec grapevines
Galat Giorgi, Mirta Eugenia; Sadras, Victor Oscar; Keller, Markus; Perez Peña, Jorge Esteban (Wiley, 2019-06-26)Background and Aims: Studies of the interactive effects of drought and high temperature on the physiological responses of grapevines (Vitis spp.) are scarce. We tested whether well‐watered, potted vines were able to avoid ... -
Modelling long-term effects of cropping intensification reveals increased water and radiation productivity in the South-eastern Pampas
Caviglia, Octavio; Sadras, Victor Oscar; Andrade, Fernando Hector (Elsevier, 2013-08)Wheat/soybean double crop provides a reliable platform for cropping intensification in many subtropical and temperate areas, even in those with a short growing season as the South-eastern Pampas of Argentina. However, the ... -
N and S concentration and stoichiometry in soybean during vegetative growth: Dynamics of indices for diagnosing the S status
Divito, Guillermo Adrián; Echeverria, Hernan Eduardo; Andrade, Fernando Hector; Sadras, Victor Oscar (Elsevier, 2016-11)Information regarding the pattern of sulphur (S) accumulation in shoots is scarce for field crops and few comprehensive analysis were performed on N:S stoichiometry. Particularly, the need to study the patterns of uptake, ... -
Nitrogen utilization efficiency in maize as affected by hybrid and N rate in late-sown crops
Caviglia, Octavio; Melchiori, Ricardo Jose; Sadras, Victor Oscar (2014-11)After the introduction of Bt-maize, late sowing is becoming an important strategy to stabilize yields in many areas of the Argentine Pampas. Increased nitrogen (N) availability and sharp reduction in radiation and temperature ... -
Review: critical appraisal of methods to investigate the effect of temperature on grapevine berry composition
Bonada, Marcos; Sadras, Victor Oscar (Wiley, 2015-02)The grapevine is an economically important crop and a model species of long‐lived perennials widely used in bioclimatic studies. Ambient temperature modulates berry composition, hence the significant research effort in ... -
Soybean shows an attenuated nitrogen dilution curve irrespective of maturity group and sowing date
Divito, Guillermo Adrián; Echeverria, Hernan Eduardo; Andrade, Fernando Hector; Sadras, Victor Oscar (2016-02-01)It is generally accepted that the nitrogen (N) dilution curves relating shoot nitrogen concentration (%N) and shoot biomass (W) are similar among genotypes from the same species. However, differences in the pattern of ... -
Soybean yield and water productivity gaps associate with ENSO-dependent effects of fungicide, sowing date and maturity group
Videla Mensegue, Horacio Rogelio; Cordoba, Mariano Augusto; Caviglia, Octavio; Sadras, Victor Oscar (Elsevier, 2024-04)Context: Soybean, the focus of this study, is the most widely sown crop and the main source of external income in Argentina. The reported soybean yield gap calculated as the difference between water-limited potential yield ... -
The critical period for grain yield in chia (Salvia hispanica)
Diez, Josefina; Anuch Tiranti, Juan Valentín; Sadras, Victor Oscar; Acreche, Martin Moises (CSIRO, 2021-03-30)Chia (Salvia hispanica L.) grain is rich in omega-3 and omega-6 fatty acids, which are important for human nutrition and prevention of cardiovascular disease, as well as dietary fibre and quality protein. Demand for chia ...