Studies of the root activity in common acid lime (Citrus aurantifolia) using 32P

Main Article Content

Autores

María Elena Báez
Conrado Delgado
Diego Miranda
Roberto Obando

Abstract

Since the root system is responsible for water and nutrient absorption from the soil, the objective of this research was to determine the root activity of five-year old plants of common acid lime on ‘Common Lime’ rootstock using isotope 32P as a tracer. In Flandes, Tolima, Colombia (28ºC mean temperature, 68% relative humidity, 1.177 mm annual precipitation, and sandy-loam soil), the application of 32P on three soil depths (15, 30, and 45 cm) and distances from the stem (100, 150, and 200 cm) were evaluated. The isotopic solution was applied at a rate of 5 mL to the zone of the tree disc. The experimental unit was one tree, and a standard sampling technique was used for leaves, branches (stem), and fruits with a 15 day sampling interval and a total of six samples. The isotope activity in the samples was determined by a counter of liquid sparkle using the Cerenkov method. The highest root activity appeared in the first 15 cm and between 15-30 cm of soil depth, reaching values between 14.5 and 18%. The distance where the highest percentage of activity was found, lay at 100 to 150 cm from the stem. The structure of the plant, where the greatest detection of the isotope was achieved, was the leaf. This information indicates that, for five-year old trees of common acid lime, the most active roots are located in the first 30 cm of soil, and between 100 and 150 cm from the stem. Therefore, it is in this zone where fertilizers and water should be supplied and multiple cultures may not be located.

Keywords:

Article Details

Licence

The copyright of the articles and illustrations are the property of the Revista Colombiana de Ciencias Hortícolas. The editors authorize the use of the contents under the Creative Commons license Attribution-Noncommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0). The correct citation of the content must explicitly register the name of the journal, name (s) of the author (s), year, title of the article, volume, number, page of the article and DOI. Written permission is required from publishers to publish more than a short summary of the text or figures.

References

Agusti, M. 2003. Citricultura. 2da. edición. Ediciones Mundi-Prensa, Madrid. 422 p.

Bujan, A.; M.B Barrios; A. Bozzo; S.P. Debelis y M.S. Yáñez. 1998. Empleo de técnicas nucleares para el estudio del desarrollo radicular en soja (Glycine max). En: http://www.cab.cnea.gov.ar/AATN99/Actas/Docs/R4I65.pdf; consulta: enero 2007.

Castro, H.E. 1996. Bases técnicas para el conocimiento y manejo de los suelos del valle cálido del alto magdalena. Corpoica regional 6. Podumedios, Bogota. 107p.

Corporación Colombia Internacional. 2002. Limas y limones. Perfil del producto. No. 18. Ministerio de Agricultura y Desarrollo Rural, Bogotá. 12 p.

Delgado, C. 1995. Evaluación de la actividad radical en Palma Africana (Eleais guineensis Jacq.) utilizando fósforo-32. Trabajo de grado. Facultad de Agronomía, Universidad Nacional de Colombia, Bogotá. 65 p.

Epstein, E. y A.J. Bloom. 2005. Mineral nutrition of plants: principles and perspectives. 2nd edition. Sinauer Associates, Inc. Publishers, Sunderland, Massachusetts. 400 p.

Fischer, G. 1994. Crecimiento y desarrollo de los frutales caducifolios. Programa de Posgrado, Facultad de Ciencias Agropecuarias, UPTC, Tunja. 89 p.

International Atomic Energy Agency. 1975. Root activity patterns of some tree crops. Technical Reports Serie N° 170. Viena.

López, S., N. Bárbaro, S. Rojas, M. Melaj, J.P. Bonetto, O. Martín y A. Solís. 2000. Aporte de las técnicas isotópicas en las recomendaciones de uso de fertilizantes y la conservación del recurso suelo. Unidad de actividad aplicaciones tecnológicas y agropecuarias. Centro Atómico Ezeiza. Comisión Nacional de Energía Atómica. 4 p.

Persson, H.A. 2002. Root systems of arboreal plants. En: Waisel, Y.; A. Eshel y L. Kafkafi (eds.). Plant roots - The hidden half. 3rd edition. Marcel Dekker, New York. pp. 187-2004.

Pino, I. 2005. Técnicas isotópicas en estudio de suelos. En: http//mazinger.sisib.uchile.cl/repositorio/lb/ciencias_agronomicas/miscelaneasagronomicas38/C15.html; consulta: enero 2007.

Salisbury, F.B. y C.W. Ross. 1994. Fisiología vegetal. Grupo Editorial Iberoamérica, México. 759 p.

Ryugo, K. 1993. Fruticultura - ciencia y arte. AGT Editor, México. 460 p.

Downloads

Download data is not yet available.