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Análisis de una depresión de la producción de trigo causada por el nitrógeno

Authors: Martínez-Carrasco, Rafael; Pérez Pérez, Pilar; Sánchez de la Puente, L.;

Análisis de una depresión de la producción de trigo causada por el nitrógeno

Abstract

[ES]La aplicación de niveles de nitrógeno variables entre 10 y 200 ppm a cultivos de trigo (Triticum aestivum L) en macetas aumentó considerablemente el área verde y su duración. El peso seco total no aumentó con más de 100 ppm del nutriente, y el peso de grano decreción con niveles superiores a 20 ppm. El número de tallos y espigas fue máximo con la dosis más alta del nutriente, pero muchas de estas espigas fueron de pequeño tamaño. El número de granos por espiga y el peso medio del grano disminuyeron con 200 ppm de nitrógeno. La depresión de la producción de grano se discute en base a la producción fotosintética del cultivo y la distribución de asimilados entre grano y paja.

[EN]The application of nitrogen levels varying from 10 to 200 ppm to wheat (Triticum aestivum L) grown in pots increased leaf area and leaf area duration considerably. Total dry weight did not increase with more than 100 ppm of the nutrient, and grain dry weight decreased with levels higher than 20 ppm. The number of shoots and ears was maximum with the highest rate of the nutrient, but many of these ears were only small. The number of grains per ear and mean dry weight of the grain decreased with 200 ppm of nitrogen. The depression in grain yield is discussed in terms of photosynthetic production of the crop and distribution of assimilates between grain and straw.

15 páginas, 11 figuras. -- Con la colaboración técnica de: María Luz Cosme y Dionisio González

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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