Profundidades óptimas y máximas para la emergencia de teosinte
Loading...
Date
2017
Authors
Prado, CristinaCirujeda Ranzenberger, Alicia
Pardo Sanclemente, Gabriel
Marí León, Ana Isabel
Fuertes Lázaro, Santiago Javier
Aibar Lete, Joaquín
Journal Title
Journal ISSN
Volume Title
Publisher
Typology
Conference MaterialPaper
Abstract
Los objetivos de este trabajo fueron los de conocer las profundidades óptimas y
máximas de emergencia de la mala hierba invasora Zea mays spp. mexicana ad. int.
(teosinte). Con esta finalidad se llevaron a cabo tres ensayos en invernadero. En los dos
primeros se sembraron semillas en macetas a profundidades comprendidas entre 0 y 18 cm a
intervalos de 2 cm con dos sustratos y con diferentes poblaciones. En el tercero se utilizaron
ambas poblaciones y sustratos entre 10-18 cm. La profundidad óptima de emergencia de teosinte tendió a ser 2 cm para el ensayo con temperaturas mínimas más bajas y de 2 a 14 cm
con temperaturas mínimas más elevadas, decreciendo al aumentar la profundidad y fue mínima para semillas dejadas en superficie. Se produjeron emergencias desde 18 cm de
profundidad para ambas poblaciones. Se discuten las implicaciones para el control mecánico de esta especie.
The aims of this work were to find out the optimum and maximum depth for emergence of the invasive weed Zea mays spp. mexicana ad. int. (teosinte). With this purpose three trials were established in greenhouse. In the two first ones, seeds were sown in pots at the depth of 0-18 cm in 2 cm intervals using two substrates and with different populations in each trial. In the third experiment both populations and substrates were used and sown between 10-18 cm. The optimum emergence of teosinte tended to be 2 cm for lower minimum temperatures and for 2 to 14 cm for higher minimum temperatures, decreasing with increasing depth being very low for seeds placed on the substrate surface. Emergence since 18 cm were recorded for both populations. Implications for mechanical control of this species are discussed.
The aims of this work were to find out the optimum and maximum depth for emergence of the invasive weed Zea mays spp. mexicana ad. int. (teosinte). With this purpose three trials were established in greenhouse. In the two first ones, seeds were sown in pots at the depth of 0-18 cm in 2 cm intervals using two substrates and with different populations in each trial. In the third experiment both populations and substrates were used and sown between 10-18 cm. The optimum emergence of teosinte tended to be 2 cm for lower minimum temperatures and for 2 to 14 cm for higher minimum temperatures, decreasing with increasing depth being very low for seeds placed on the substrate surface. Emergence since 18 cm were recorded for both populations. Implications for mechanical control of this species are discussed.
Description
Keywords
Planta invasora, Biología, Zea mays spp. mexicana
Bibliographic citation
XVI Congreso de la Sociedad Española de Malherbología, Pamplona-Iruña, 25-27 de octubre 2017
AGROVOC subjects
TeosinteZea mays
Cultivos de invernadero
Other field subjects
Sanidad vegetalSponsorship
Este trabajo ha sido financiado por el proyecto E-RTA2014-00011-C02 y C. Prado ha recibido una beca SEMh para la realización de su Proyecto Final de Grado que incluye este ensayo.