Influencia en el desarrollo fenológico con la medición de índice SPAD en maíz
| dc.contributor.advisor | Mayorga Arias, David | |
| dc.contributor.author | Medina Salvatierra, Jennifer Carolina | |
| dc.date.accessioned | 2024-04-10T15:05:12Z | |
| dc.date.available | 2024-04-10T15:05:12Z | |
| dc.date.issued | 2024 | |
| dc.identifier.uri | http://dspace.utb.edu.ec/handle/49000/16026 | |
| dc.description | Evaluations with SPAD chlorophyll meters can provide fast and reliable measurements as long as they provide a sufficient number of measurements relevant to each species, five measurements to one create a custom model; The choice of the phenological state of the plant and the sector in which the measurements are made is also important, mainly because the leaves and their phyllotaxy have great differences in chlorophyll content. In this bibliographic work, all the information collected was analyzed, synthesized and summarized with the sole objective of providing specific information on the SPAD index in corn cultivation. The SPAD 502 Chlorophyll Meter is an instrument that can indirectly and non-destructively evaluate the chlorophyll content, in order to understand the nutritional value of your crops. To carry out sampling of chlorophyll readings in corn plants, it is recommended to do so in a state of six to eight leaves; The leaf to be sampled must have a complete collar with a white line, which will correspond to a mature leaf with good color. There is a linear relationship between chlorophyll content and nitrogen levels in corn leaves, where a simultaneous increase has been evidenced as chlorophyll readings increased and vice versa. The chlorophyll value at the V6 stage is related to the nitrogen status of the plant; A low assessment is found between SPAD values in the V6 stage and corn yield, highlighting its limited potential as a diagnostic tool at this stage. There are high correlations between SPAD readings in phenological stages R3-R4 and corn yield. Significant SPAD chlorophyll values are evident in the middle third of leaves 6 to 13 leaves; ranging between 50 and 54 SPAD units, with the highest values shown on sheets 10 and 11. | es_ES |
| dc.description | Evaluations with SPAD chlorophyll meters can provide fast and reliable measurements as long as they provide a sufficient number of measurements relevant to each species, five measurements to one create a custom model; The choice of the phenological state of the plant and the sector in which the measurements are made is also important, mainly because the leaves and their phyllotaxy have great differences in chlorophyll content. In this bibliographic work, all the information collected was analyzed, synthesized and summarized with the sole objective of providing specific information on the SPAD index in corn cultivation. The SPAD 502 Chlorophyll Meter is an instrument that can indirectly and non-destructively evaluate the chlorophyll content, in order to understand the nutritional value of your crops. To carry out sampling of chlorophyll readings in corn plants, it is recommended to do so in a state of six to eight leaves; The leaf to be sampled must have a complete collar with a white line, which will correspond to a mature leaf with good color. There is a linear relationship between chlorophyll content and nitrogen levels in corn leaves, where a simultaneous increase has been evidenced as chlorophyll readings increased and vice versa. The chlorophyll value at the V6 stage is related to the nitrogen status of the plant; A low assessment is found between SPAD values in the V6 stage and corn yield, highlighting its limited potential as a diagnostic tool at this stage. There are high correlations between SPAD readings in phenological stages R3-R4 and corn yield. Significant SPAD chlorophyll values are evident in the middle third of leaves 6 to 13 leaves; ranging between 50 and 54 SPAD units, with the highest values shown on sheets 10 and 11. | es_ES |
| dc.description.abstract | Las evaluaciones con medidores de clorofila SPAD pueden proporcionar mediciones rápidas y confiables siempre que proporcionen una cantidad suficiente de mediciones relevantes para cada especie, cinco mediciones por una crean un modelo personalizado; también es importante la elección del estado fenológico de la planta y del sector en el que se realizan las mediciones, principalmente porque las hojas y su filotaxia tienen grandes diferencias en el contenido de clorofila. En este trabajo bibliográfico toda la información recopilada fue analizada, sintetizada y resumida con el único objetivo de proporcionar información específica sobre el índice de SPAD en el cultivo de maíz. Por lo anteriormente detallado se determino El Medidor de Clorofila SPAD 502 es un instrumento que puede evaluar de forma indirecta y no destructiva el contenido de clorofila, para poder entender el valor nutricional de tus cultivos. Para efectuar el muestreo de lecturas de clorofila, en plantas de maíz, se recomienda hacerlo en estado de seis a ocho hojas; la hoja a muestrear debe presentar el collar completo con una línea blanca, la que corresponderá a una hoja madura y de buen color. Existen una relación era lineal del contenido de clorofila y los niveles de nitrógeno en las hojas de maíz, donde se ha evidenciado un aumenta simultaneo a medida que aumentaban las lecturas de clorofila y viceversa. El valor de la clorofila en la etapa V6 está relacionado con el estado de nitrógeno de la planta; se encuentra una baja correlación entre los valores de SPAD en la etapa V6 y el rendimiento del maíz, destacando su limitado potencial como herramienta de diagnóstico en esta etapa. Existen altas correlaciones entre las lecturas de SPAD en las etapas fenológicas R3-R4 y el rendimiento del maíz. Se evidencian valores de clorofila SPAD significativos en el tercio medio de las hojas 6 a 13 hojas; oscilando entre 50 y 54 unidades SPAD, mostrándose los valores más altos en las hojas 10 y 11. | es_ES |
| dc.format.extent | 31 p. | es_ES |
| dc.language.iso | es | es_ES |
| dc.publisher | BABAHOYO: UTB, 2024 | es_ES |
| dc.rights | Atribución-NoComercial-SinDerivadas 3.0 Ecuador | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/ec/ | * |
| dc.subject | Medidor | es_ES |
| dc.subject | Clorofila | es_ES |
| dc.subject | Fenología | es_ES |
| dc.subject | Area foliar | es_ES |
| dc.title | Influencia en el desarrollo fenológico con la medición de índice SPAD en maíz | es_ES |
| dc.type | bachelorThesis | es_ES |
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