Riego de cebolla (Allium cepa) y trébol rojo (Trifolium Pratense) con agua tratada con sulfato de amonio y cal
; Tucat, Guillermo
; Daddario, Juan Facundo Fabian
; Bentivegna, Diego Javier 
Otros responsables
Fecha
2023
Editorial
Asociación Argentina de Malezas
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Título del libro
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IV Congreso Argentino de Malezas
Fecha del evento
2023-09-14
Institución organizadora
Asociación Argentina de Malezas
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Resumen
La utilización de la mezcla de sulfato de amonio (SA) y cal hidratada se ha evaluado para el control de malezas acuáticas sumergidas en canales de riego en el Valle Inferior del Río Colorado. Al momento se desconoce el efecto de regar los cultivos con agua tratada con SA y cal. El objetivo del trabajo fue evaluar si las dosis propuestas para el control de malezas en canales de riego son seguras para los cultivos irrigados con agua proveniente de los canales tratados. Se realizó un ensayo en el invernadero del CERZOS-CONICET Bahía Blanca entre octubre y diciembre de 2016 y repetido en 2019. Consistió en regar con SA y cal diluido dos especies (Allium cepa y Trifolium pratense) contenidas en macetas individuales de 300 cm3 . Las dosis evaluadas fueron 0,015; 0,031; 0,062; 0,124 y 0,248 g de SA y cal l-1 constituyendo un total de 6 tratamientos. En el tratamiento testigo el riego fue con agua sin el agregado de SA ni cal. La lámina de riego utilizada fue el equivalente a 200 mm ha-1 . Al cabo de tres meses las plantas fueron cosechadas y se determinó la biomasa aérea. Para el análisis de los datos se utilizó ANOVA, y el test DMS Fisher. Las plantas de cebolla regadas con SA y cal no mostraron diferencias significativas (p<0,05) en el crecimiento respecto al testigo, ni presentaron síntomas de fitotoxicidad. En 2016 la biomasa seca de trébol rojo para el tratamiento de 0,062 g de SA y cal l-1 fue significativamente mayor al testigo, mientras que en el 2019, no se registraron diferencias entre los tratamientos. El uso de estos productos en el agua de riego podría ser una alternativa viable, aunque necesita mayor investigación para validar los resultados a campo y el impacto en otros aspectos ambientales.
Mixture use of ammonium sulfate (SA) and hydrated lime has been evaluated for the control of submerged aquatic weeds in irrigation canals in the Lower Valley of the Colorado River. Effect of irrigating crops with water treated with SA and lime remains unknown. The objective of the work was to evaluate if the doses proposed for the control of weeds in irrigation canals are safe for crops irrigated with water from the treated canals. A trial was carried out in the CERZOS-CONICET Bahía Blanca greenhouse between October and December 2016 and repeated in 2019. It consisted of irrigating with SA and diluted lime two species (Allium cepa and Trifolium pratense) contained in individual 300 cm3 pots. The doses evaluated were 0.015; 0.031; 0.062; 0.124 and 0.248 g of SA and lime l-1 constituting a total of 6 treatments. In the control treatment, irrigation was with water without the addition of SA or lime. The irrigation sheet used was the equivalent of 200 mm ha-1 . After three months the plants were harvested and the aerial biomass was determined. For data analysis, ANOVA and the DMS Fisher test were used. Onion plants irrigated with SA and lime did not show significant differences (p<0.05) in growth compared to the control, neither they present phytotoxicity symptoms. In 2016, the dry biomass of red clover for the treatment of 0.062 g of SA and lime l-1 was significantly higher than the control. While, in 2019 there were no differences between the treatments. The use of these products in irrigation water could be a viable alternative, although further research is needed to validate the results in the field and the impact on other environmental aspects.
Mixture use of ammonium sulfate (SA) and hydrated lime has been evaluated for the control of submerged aquatic weeds in irrigation canals in the Lower Valley of the Colorado River. Effect of irrigating crops with water treated with SA and lime remains unknown. The objective of the work was to evaluate if the doses proposed for the control of weeds in irrigation canals are safe for crops irrigated with water from the treated canals. A trial was carried out in the CERZOS-CONICET Bahía Blanca greenhouse between October and December 2016 and repeated in 2019. It consisted of irrigating with SA and diluted lime two species (Allium cepa and Trifolium pratense) contained in individual 300 cm3 pots. The doses evaluated were 0.015; 0.031; 0.062; 0.124 and 0.248 g of SA and lime l-1 constituting a total of 6 treatments. In the control treatment, irrigation was with water without the addition of SA or lime. The irrigation sheet used was the equivalent of 200 mm ha-1 . After three months the plants were harvested and the aerial biomass was determined. For data analysis, ANOVA and the DMS Fisher test were used. Onion plants irrigated with SA and lime did not show significant differences (p<0.05) in growth compared to the control, neither they present phytotoxicity symptoms. In 2016, the dry biomass of red clover for the treatment of 0.062 g of SA and lime l-1 was significantly higher than the control. While, in 2019 there were no differences between the treatments. The use of these products in irrigation water could be a viable alternative, although further research is needed to validate the results in the field and the impact on other environmental aspects.
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