Distribución espacial y efecto de densidades de población de Tetranychus urticae Koch en el rendimiento de maíz forrajero
DOI:
https://doi.org/10.59741/agraria.v8i1.446Keywords:
Spatial distribution, Tetranychus urticae, Zea mays, Taylor’s power law, yieldAbstract
The spatial distribution of Tetranychus urticae Koch was identified on the front and the underside of leaves in three plant strata (low, medium and high) of forage maize plants, and the effect of different levels of population of forage maize yield. The experiment was conducted at the experimental station of the Universidad Autónoma Agraria Antonio Narro (UAAAN) located in San Pedro, Coah., Mexico. Relationship between the average density of two-spotted mite in the plant, and the variance expressed by Taylor’s power law was highly significant, the slopes were nearly identical and significantly > 1 in all cases, therefore the spatial distribution was highly aggregated on the underside of the leaf, and in the middle of the plant. The results on the effect of different densities of T. urticae, in fresh and dry weight were highly significant, but were not so for plant height, with a 82,75 percent infested leaves and half the population of 8,968.50 mites may reduce the yield to 30,75 and 32,08% for fresh weight and weight, respectively.
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