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Mostrando ítems 1-20 de 42
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Agricultura de precisión: dosis variable de nitrógeno en cebada
(2015)La Agricultura de Precisión (AP) permite delimitar zonas de manejo (ZM) que expresan diferente potencial de rendimiento. Los objetivos de esta investigación fueron: (l) determinar la interacción entre las ZM y la fertilización ... -
Analysis of factors controlling maize yield response to hairy vetch and to nitrogen fertilization after hairy vetch
(Elsevier, 2023-11)Context or problem: Several agricultural producers around the world are adopting hairy vetch (HV) (Vicia villosa Roth) inclusion in the crop sequence before maize (Zea mays L.). To date, it is not clear which factors control ... -
Assessment of nitrogen diagnosis methods in sunflower
(American Society of Agronomy; Estados Unidos, 2021-04-20)Nitrogen deficiency can severely limit sunflower (Helianthus annuus L.) grain yield and quality. Our objective was to evaluate N diagnosis methods based on: (a) pre-plant soil nitrate-nitrogen (NO3––N) test (PPSNT) and ... -
Cambios en las propiedades químicas de un suelo molisol de la región pampeana argentina con diferente historia de manejo = Changes on the chemical properties of a mollisol soil under different management systemas in the Pampean region, Argentina
(Universidad de Concepción, Chile, 2015)La intensificación del uso agrícola del suelo provoca degradación, la cual puede revertirse implementando rotaciones de cultivos, labranzas conservacionistas, forestaciones o incorporando pasturas. El objetivo de este ... -
Canopy indices to quantify the economic optimum nitrogen rate in processing potato
(Springer, 2016-06)In-season N applications to processing potato crops may increase profits and improve N fertilizer use efficiency. The objective of our study was to evaluate indices to predict the differential economic optimum N rate (dEONR) ... -
Caracterización del estrés de nitrógeno en papa para industria usando el NDVI = Characterizing nitrogen stress in processing potato using NDVI
(Asociación Argentina de la Ciencia del Suelo, 2016)La medición de la reflectancia con sensores ópticos tiene el potencial de proporcionar información sobre el estatus de nitrógeno (N) durante el ciclo del cultivo de papa para industria y podría predecir la dosis de N. Los ... -
Chlorophyll meter for the evaluation of potato N status
(Springer, 2013-08)Here, we propose a new approach to determine the level of plant N nutrition, based on the relationship between chlorophyll meter (CM) readings and total biomass in potato plants. The objectives of this work were i) to ... -
Cover crop species can increase or decrease the fertilizer-nitrogen requirement in maize
(American Society of Agronomy; Estados Unidos, 2021-07-03)Cover crop species and termination date could affect fertilizer-N management and N diagnostic methods traditionally used in bare fallow-maize (Zea mays L.) systems. Our objectives were to (a) assess the impact of cover ... -
Critical nitrogen dilution curve for processing potato in Argentinean Humid Pampas
(Springer, 2012-04)For processing potato, a new algorithm has been developed to determine nitrogen (N) requirement (NR) applying critical N dilution curve (Nc). The objectives of this work were i) to determine the Nc for processing potato ... -
Critical nitrogen dilution curve in processing potato cultivars
(Scientific Research, 2015-12)The critical nitrogen dilution curve (CNDC) can be used as a diagnostic tool to assess crop N nutrition during the growing season. Potato cultivars have different biomass production and accumulation of N and consequently ... -
Delineation of management zones to improve nitrogen management of wheat
(2015-01)Site-specific management of N (NSSM) is an attractive and intuitive approach to increasing N fertilizer use efficiency (NUE) of agricultural systems by adjusting fertilizer rates to the soil characteristics. The objective ... -
Denitrification in a Soil under Wheat Crop in the Humid Pampas of Argentina
(Scientific Research, 2014-09)The need to accurately estimate gaseous nitrogen losses from soils is required to have a better understanding of the processes involved as well as soil and environmental conditions, and management practices contributing ... -
Economic optimum nitrogen rate analysis for feed and malting barley
(Wiley, 2022-07-10)The malt industry has specific requirements for malting barley (Hordeum vulgare L.) grain protein concentration (from 9.5 to 13%) and size (>85%), which could be affected by nitrogen (N) fertilization. We aimed to (a) ... -
Field methods for making productivity classes for site-specific management of wheat
(Springer, 2022-02-02)Reducing the decision-making unit to classes within fields can improve yields, efficiency in the use of nutrients and profitability of crops. The objectives were to compare methods for class delimitation in wheat (Triticum ... -
Gross nitrogen mineralization and immobilization in temperate maize-soybean intercrops
(Springer, 2015-06)Background and aims: Reliance on nitrogen (N) fertilizers to maintain crop productivity requires a thorough understanding of the transformation of this nutrient within the soil-plant system. Organic matter input from a ... -
Grupos funcionales de plantas, producción de forraje y eficiencia de uso de radiación de pastizales naturales en condiciones potenciales y limitadas de agua y nitrógeno
(Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2011-04)Con el objetivo de analizar el efecto de la disponibilidad hídrica y nitrogenada sobre el crecimiento primavero estival de forraje, se condujo un experimento en un pastizal natural de la Pampa Deprimida (Argentina) con ... -
Improving soil organic nitrogen and sulfur pools by cover cropping and crop fertilization in soybean-based cropping systems
(Elsevier, 2021-07-10)Nitrogen (N) and sulfur (S) define crops productivity, and are currently deficient in most agricultural soils. In agricultural systems, management practices can affect N and S organic pools (Norg and Sorg, respectively). ... -
Inclusion of cover crops in cropping sequences with soybean predominance in the southeast of the Humid Argentine Pampa
(2013)The incorporation of a cover crop (CC) may be an alternative to increase soil carbon (C) and nitrogen (N) supply in crop sequences with a high frequency of soybean. The aims of this study were (i) to determine shoot biomass ... -
Influence of management practices on water-related grain yield determinants
(Oxford University Press, 2023-07-25)Adequate management of N supply, plant density, row spacing, and/or soil cover has proved useful to increase grain yields and/or grain yield stability across years of rainfed crops. We reviewed the impact of these management ... -
Methods to determine nitrogen in sunflower grains
(Asociación Argentina de la Ciencia del Suelo, 2021-12)In sunflower, grain oil concentration (OG) determines oil industrial yield and protein concentration (PG) determines the protein of by-products as pellets and meals (PM). There are various methodologies to quantify total ...