Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil

ABSTRACT The objective of this work was to quantify damage and yield losses in lettuce parasitized by Meloidogyne javanica, as well as the growth characteristics of naturally cultivated field plants infested by this pathogen. The experimental area consisted of four seedbeds of 10.0x1.60 m cultivated...

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Autores principales:	Rabello,Lilian Katiany C., Oliveira Gongalves,Angelo, Cruz,Tatiane Paulino da, Domingo Zinger,Fernando, Jesus Júnior,Waldir Cintra de, Lagen Rodrigues,Lilian, Souza,Antonio Fernando de, Bucker Moraes,Willian, Ramos Alves,Fábio
Lenguaje:	English
Publicado:	Universidad de Tarapacá. Facultad de Ciencias Agronómicas 2021
Materias:	Lactuca sativa Meloidogyne javanica field
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292021000200121
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spelling	oai:scielo:S0718-342920210002001212021-10-20Quantification of damage and yield losses caused by Root-knot nematode in lettuce in BrazilRabello,Lilian Katiany C.Oliveira Gongalves,AngeloCruz,Tatiane Paulino daDomingo Zinger,FernandoJesus Júnior,Waldir Cintra deLagen Rodrigues,LilianSouza,Antonio Fernando deBucker Moraes,WillianRamos Alves,Fábio Lactuca sativa Meloidogyne javanica field ABSTRACT The objective of this work was to quantify damage and yield losses in lettuce parasitized by Meloidogyne javanica, as well as the growth characteristics of naturally cultivated field plants infested by this pathogen. The experimental area consisted of four seedbeds of 10.0x1.60 m cultivated with 160 plants in each, totaling 640 plants. The damages and yield loss were quantified in four evaluations (Ev1, Ev2, Ev3, and Ev4), with each evaluation corresponding to a cultivation cycle. The four plantings were made in the consecutive form. The fresh mass weight and dry mass weight (FMW and DMW, respectively), gall number (GN), and final population of the nematodes (FP) were evaluated. The population increase of M. javanica caused a reduction in the FMW and DMW in all evaluations. In Ev1 and Ev2, 100% of the plants were commercialized. In Ev3 and Ev4, 7% and 65% of the plants, respectively, could not be commercialized. The Ev4 was completely unviable since the produce had losses of U$ 7.42; U$ 23.19 and U$ 1,484.10 for the cultivation of 640; 2,000 and 128,000 plants, respectively. The economic threshold in Ev4 was 10,151 nematodes/plant or 109 galls/plant.info:eu-repo/semantics/openAccessUniversidad de Tarapacá. Facultad de Ciencias AgronómicasIdesia (Arica) v.39 n.2 20212021-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292021000200121en10.4067/S0718-34292021000200121
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Lactuca sativa Meloidogyne javanica field
spellingShingle	Lactuca sativa Meloidogyne javanica field Rabello,Lilian Katiany C. Oliveira Gongalves,Angelo Cruz,Tatiane Paulino da Domingo Zinger,Fernando Jesus Júnior,Waldir Cintra de Lagen Rodrigues,Lilian Souza,Antonio Fernando de Bucker Moraes,Willian Ramos Alves,Fábio Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil
description	ABSTRACT The objective of this work was to quantify damage and yield losses in lettuce parasitized by Meloidogyne javanica, as well as the growth characteristics of naturally cultivated field plants infested by this pathogen. The experimental area consisted of four seedbeds of 10.0x1.60 m cultivated with 160 plants in each, totaling 640 plants. The damages and yield loss were quantified in four evaluations (Ev1, Ev2, Ev3, and Ev4), with each evaluation corresponding to a cultivation cycle. The four plantings were made in the consecutive form. The fresh mass weight and dry mass weight (FMW and DMW, respectively), gall number (GN), and final population of the nematodes (FP) were evaluated. The population increase of M. javanica caused a reduction in the FMW and DMW in all evaluations. In Ev1 and Ev2, 100% of the plants were commercialized. In Ev3 and Ev4, 7% and 65% of the plants, respectively, could not be commercialized. The Ev4 was completely unviable since the produce had losses of U$ 7.42; U$ 23.19 and U$ 1,484.10 for the cultivation of 640; 2,000 and 128,000 plants, respectively. The economic threshold in Ev4 was 10,151 nematodes/plant or 109 galls/plant.
author	Rabello,Lilian Katiany C. Oliveira Gongalves,Angelo Cruz,Tatiane Paulino da Domingo Zinger,Fernando Jesus Júnior,Waldir Cintra de Lagen Rodrigues,Lilian Souza,Antonio Fernando de Bucker Moraes,Willian Ramos Alves,Fábio
author_facet	Rabello,Lilian Katiany C. Oliveira Gongalves,Angelo Cruz,Tatiane Paulino da Domingo Zinger,Fernando Jesus Júnior,Waldir Cintra de Lagen Rodrigues,Lilian Souza,Antonio Fernando de Bucker Moraes,Willian Ramos Alves,Fábio
author_sort	Rabello,Lilian Katiany C.
title	Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil
title_short	Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil
title_full	Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil
title_fullStr	Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil
title_full_unstemmed	Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil
title_sort	quantification of damage and yield losses caused by root-knot nematode in lettuce in brazil
publisher	Universidad de Tarapacá. Facultad de Ciencias Agronómicas
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-34292021000200121
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Quantification of damage and yield losses caused by Root-knot nematode in lettuce in Brazil

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