The effect of “coyolillo” (Cyperus rotundus) on the growth of canavalia (Canavalia ensiformis).
DOI:
https://doi.org/10.15517/am.v8i1.24739Abstract
During the summer 1995, at the Experimental and Training Station of the Agronomy School of the University of El Salvador, an experiment was established by alternating sword bean (0.80 m. x 0.50 m) with maize (0.80 m. x 0.30 m.), under zero management. The plot was divided in two areas one with a high infestation of “coyolillo” and other with a predominance of wide-leaf weeds, such as Baltimora recta, Melantera sp., Lantana camara, and Panicum sp. Samples were taken in each area every 10 days, by using 10 sword plants to determine the following variables: plant height, dry weight, absolute growth rate, and relative average growth rate. The infestation with Cyperus initially oscillated between 1200 to 1650 young sprouts/m2. The experiment was analyzed under the concept of paired plots. The results indicated significant differences for the height of Canavalia plants, increasing from 10 dds to 20 and 30 dds, reaching the maximum growth in the plot without Cyperus, reaching 108 cm at 40 dds, in contrast with plants with competence by Cyperus, which attained a maximum height of 82.9 cm. This showed an unfavorable competition to Canavalia, which was also supported by the accumulation of dry matter.
Downloads
References
AKOBUNDU, I. O. 1987. Weed Science. Principles and Practices. John Wiley & Sons, 1987. 521 p.
AREVALO, R. A. 1978. Matoecología de caña de azúcar. In: Curso para agrónomos da CYABA GEIGY. ARARAS - sp, Brasil, 16p.
BARRETO, H. J. 1994. Evaluaciòn y utilización de diferentes mantillos y cultivos de cobertura en la producción de maíz en Centroamérica. In: Los sistemas de siembra con cobertura. Editado por Thurston et al., CATIE-CIIFAD, Ithaca, Cornell University, New York, pp 167 - 178.
CHASE, R. 1977. El coyolillo en El Salvador. CENTA, Ministerio de Agricultura, Santa Tecla, El Salvador, 18 p.
DOLL, J. 1979. Manejo y control de malezas en el trópico. 2 da. reimpresión, Centro Internacional de Agricultura Tropical, Cali, Colombia, 114 p.
ESCALANTE E., J.A.; KOHASHI SHIBATA, J. 1993. El rendimiento y crecimiento del frijol. Centro de Botánica, Colegio de Post-graduados, Montecillo, México. 84 p.
GARCIA , R.; QUIROGA M., R.; GRANADOS A., N. 1994. Agroecosistemas de productividad sostenida de maíz, en las regiones cálido húmedas de México. In: Los sistemas de siembra con cobertura. Editado por Thurston et al., CATIE-CIIFAD, Ithaca, Cornell university, New York,. pp 65-80.
MELARA, W. ; DEL RIO, L. 1994. Uso de labranza mínima y leguminosas de cobertura. In: Los sistemas de siembra con cobertura. Editado por Thurston et al., CATIECIIFAD, Ithaca, Cornell University, New York, pp 57-63.
REYES C., P. 1991. Diseños experimentales aplicadas. Ed. Trillas, México. 344 p.
Downloads
Published
How to Cite
Issue
Section
License
1. Proposed policy for open access journals
Authors who publish in this journal accept the following conditions:
a. Authors retain the copyright and assign to the journal the right to the first publication, with the work registered under the attribution, non-commercial and no-derivative license from Creative Commons, which allows third parties to use what has been published as long as they mention the authorship of the work and upon first publication in this journal, the work may not be used for commercial purposes and the publications may not be used to remix, transform or create another work.
b. Authors may enter into additional independent contractual arrangements for the non-exclusive distribution of the version of the article published in this journal (e.g., including it in an institutional repository or publishing it in a book) provided that they clearly indicate that the work was first published in this journal.
c. Authors are permitted and encouraged to publish their work on the Internet (e.g. on institutional or personal pages) before and during the review and publication process, as it may lead to productive exchanges and faster and wider dissemination of published work (see The Effect of Open Access).
