Influencia de niveles de infestación de Tubixaba tuxaua (Monteiro & Lordello, 1980) en el cultivo de soja

Carine Andressa Kolling; Marco Maidana Ojeda

doi:10.18004/investig.agrar.2019.diciembre.142-148

Authors

Carine Andressa Kolling Universidad Católica Nuestra Señora de la Asunción, Facultad de Ciencias Agropecuarias, Unidad Pedagógica María Auxiliadora. Tomás Romero Pereira, Paraguay.
Marco Maidana Ojeda Centro de Desarrollo e Innovación Tecnológica. Hohenau, Paraguay.

DOI:

https://doi.org/10.18004/investig.agrar.2019.diciembre.142-148%20%20

Abstract

Tubixaba tuxaua is a phytonematode that causes damage to crops and was recently identified in soil samples from Paraguay. Due to the scarcity of local information on the damage caused to soybean cultivation, a study was carried out with the objective of evaluating the effects on development and yield caused by different densities of Tubixaba tuxaua in the soybean crop. The experiment was carried out in field conditions, in the 2016/2017 cycle, in Tempiaporenda, Caazapá, Paraguay, in a plot with 10 years of soybean production. According to the symptoms observed 48 days after sowing, 3 areas of infestation were delimited and distributed in a completely randomized experimental design with 12, 6 and 7 repetitions, for the areas of high, medium and free infestation of Tubixaba tuxaua respectively. The variables analyzed were; population of the nematode, foliar area, dry mass, height of plant, number of pods, weight of 100 grains and yield. The results showed statistical differences between the treatments for all the variables except weight of 100 grains. It was observed that in areas with a greater population of nematodes, there was a decrease in plant height, number of pods, foliar area, dry mass and yield with a decreasing tendency.

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