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Estimating yellow potato (Solanum phureja Juz. et Buk.) solar radiation interception in three Colombian localities; Estimación de la interceptación de la radiación solar en papa criolla (Solanum phureja Juz. et Buk.) en tres localidades colombianas

Abstract

Three experiments were simultaneously carried out in three Colombian localities (Firavitoba, Carmen de Carupa y Bogotá) to measure and compare photosynthetically active radiation (PAR) interception patterns in Solanum phureja. Three random complete block design planting densities (8,33, 4.17 and 2.67 plants/m{sup 2}) were evaluated, having four replicates and an experimental unit consisting of five four-metre-long rows or planting lines. Overall PAR, reflected PAR, transmitted PAR and absorbed PAR were determined. The Monsie and Saeky model was used for establishing the PAR k extinction coefficient in canopies. Results revealed statistically significant differences within localities and plant densities, but not for LAI interaction. There was a higher overall incidence of radiation in those localities situated at high altitudes. PAR distribution was similar in high and low stratum in all cases, proving that plant architecture allows a suitable distribution of PAR within the canopy. The k extinction coefficient was mainly affected by leaf development. Values ranged from 0.39 to 0.61. It was revealed that plants may become quickly saturated above 2,800 m a.s.l. due to effects of luminescence, thus inducing stressful conditions interfering with leaf development and therefore distribution of tuber photo- assimilation, so affecting agronomic yield. (author) [Spanish] Para medir y comparar  More>>
Publication Date:
Jul 01, 2005
Product Type:
Journal Article
Resource Relation:
Journal Name: Agronomia Colombiana; Journal Volume: 23; Journal Issue: 1; Other Information: FAO/AGRIS record; ARN: CO2007U00150; Country of input: International Atomic Energy Agency (IAEA)
Subject:
60 APPLIED LIFE SCIENCES; ALTITUDE; ARCHITECTURE; ASSIMILATION; CANOPIES; COMPARATIVE EVALUATIONS; LEAVES; LUMINESCENCE; PHOTOSYNTHESIS; POTATOES; RANDOMNESS; SOLANUM; SOLAR RADIATION
OSTI ID:
22447843
Country of Origin:
FAO
Language:
Spanish
Other Identifying Numbers:
Journal ID: ISSN 0120-9965; TRN: XF15A5228017385
Availability:
Also available on-line: http://www.scielo.org.co/pdf/agc/v23n1/v23n1a09.pdf
Submitting Site:
INIS
Size:
page(s) 62-73
Announcement Date:
Mar 15, 2016

Citation Formats

Cabezas, M, and Corchuelo, G. Estimating yellow potato (Solanum phureja Juz. et Buk.) solar radiation interception in three Colombian localities; Estimación de la interceptación de la radiación solar en papa criolla (Solanum phureja Juz. et Buk.) en tres localidades colombianas. FAO: N. p., 2005. Web.
Cabezas, M, & Corchuelo, G. Estimating yellow potato (Solanum phureja Juz. et Buk.) solar radiation interception in three Colombian localities; Estimación de la interceptación de la radiación solar en papa criolla (Solanum phureja Juz. et Buk.) en tres localidades colombianas. FAO.
Cabezas, M, and Corchuelo, G. 2005. "Estimating yellow potato (Solanum phureja Juz. et Buk.) solar radiation interception in three Colombian localities; Estimación de la interceptación de la radiación solar en papa criolla (Solanum phureja Juz. et Buk.) en tres localidades colombianas." FAO.
@misc{etde_22447843,
title = {Estimating yellow potato (Solanum phureja Juz. et Buk.) solar radiation interception in three Colombian localities; Estimación de la interceptación de la radiación solar en papa criolla (Solanum phureja Juz. et Buk.) en tres localidades colombianas}
author = {Cabezas, M, and Corchuelo, G}
abstractNote = {Three experiments were simultaneously carried out in three Colombian localities (Firavitoba, Carmen de Carupa y Bogotá) to measure and compare photosynthetically active radiation (PAR) interception patterns in Solanum phureja. Three random complete block design planting densities (8,33, 4.17 and 2.67 plants/m{sup 2}) were evaluated, having four replicates and an experimental unit consisting of five four-metre-long rows or planting lines. Overall PAR, reflected PAR, transmitted PAR and absorbed PAR were determined. The Monsie and Saeky model was used for establishing the PAR k extinction coefficient in canopies. Results revealed statistically significant differences within localities and plant densities, but not for LAI interaction. There was a higher overall incidence of radiation in those localities situated at high altitudes. PAR distribution was similar in high and low stratum in all cases, proving that plant architecture allows a suitable distribution of PAR within the canopy. The k extinction coefficient was mainly affected by leaf development. Values ranged from 0.39 to 0.61. It was revealed that plants may become quickly saturated above 2,800 m a.s.l. due to effects of luminescence, thus inducing stressful conditions interfering with leaf development and therefore distribution of tuber photo- assimilation, so affecting agronomic yield. (author) [Spanish] Para medir y comparar los patrones de in¬terceptación de la radiación fotosintéticamente activa en S. phureja, se establecieron tres experimentos simultáneos en tres localidades colombianas (Firavitoba, Carmen de Carupa y Bogotá). Se evaluaron tres densidades de siembra (8,33; 4,17 y 2,67 plantas/m{sup 2}) bajo un diseño de bloques completos al azar, con cuatro repeticiones y una unidad experimental compuesta por cinco surcos de cuatro m de largo. Se midió la radiación fotosintéti¬camente activa incidente total (RFA), la RFA reflejada, la RFA transmitida y la RFA absorbida. Se estableció el coeficiente de extinción k de RFA en los doseles a partir del modelo de Monsie y Saeki. Se presentaron diferen¬cias significativas entre localidades y densidades, pero no en la interacción para el componente IAF. La radia¬ción incidente total tuvo mayores valores en las locali¬dades situadas a mayor altitud. La distribución de RFA en los estratos alto y bajo fue similar en todos los casos y se demostró que la arquitectura de la planta permite una adecuada repartición de la RFA en el dosel. El co¬eficiente de extinción k se vio afectado principalmente por el desarrollo foliar. Los valores oscilaron entre 0,39 y 0,61. Se demuestra que a alturas superiores a los 2.800 m.s.n.m., es posible que la planta se sature rápidamente por efectos lumínicos y esto induzca a condiciones es¬tresantes que interfieren con el desarrollo foliar y con la distribución de fotoasimilados al tubérculo, afectando así el rendimiento agronómico. (author)}
journal = {Agronomia Colombiana}
issue = {1}
volume = {23}
journal type = {AC}
place = {FAO}
year = {2005}
month = {Jul}
}