Variabilidad espacial de la temperatura superficial del suelo y de algunas variables de producción en cultivos de crisantemo bajo invernadero | Spatial variability of soil surface temperature and of some variables of production in greenhouse cultivation of chrysanthemum
Resumen
En un cultivo de crisantemo bajo invernadero, variedad Delistar, se estudió la relación entre la temperatura superficial del suelo, la altura, el peso de las plantas y el diámetro de la flor, al momento de hacer la cosecha. Se encontró correlación estadísticamente significativa entre el peso de la planta, su altura y el diámetro de su flor. Mediante un diseño anidado se estudió el efecto de la distancia de muestreo sobre las variables analizadas. Se estudiaron 4 distancias: 30 m, 10 m, 5 m y
0,80 m, encontrándose que la mayor parte de la variabilidad, en todas las variables, se presentó en distancias menores a 0,80 m, con muy poca acumulación de variabilidad a distancias mayores a 5 m. Para utilizar las variables trabajadas con fines predictivos se recomienda hacer los muestreos de manera aleatoria y caracterizarlas con su valor promedio.
Palabras clave: Diseño anidado, temperatura del suelo, crisantemo, variabilidad espacial.
ABSTRACT
In a commercial greenhouse cultivation of chrysanthemum Delistar variety, the relation between superficial temperature of soil, height and weight of plants as well as flower diameter to the moment of harvest were studied. There was only statistically significant correlation between the weight of plants, with their height and diameter of their flower. A nested design was used to study the effect of sampling distance on tested variables. Four distances were studied: 30 m, 10 m, 5 m and 0,80 m, we found that most of the variability, in all variables, are presented for distances less than 0,80 m, with very little accumulation of variability at distances greater than 5 m. To use the variables worked with predictive purposes it is recommended that a random sampling and characterized by its average value.
Key words: Nested design, soil temperature, Chrysanthemum, spatial variability
0,80 m, encontrándose que la mayor parte de la variabilidad, en todas las variables, se presentó en distancias menores a 0,80 m, con muy poca acumulación de variabilidad a distancias mayores a 5 m. Para utilizar las variables trabajadas con fines predictivos se recomienda hacer los muestreos de manera aleatoria y caracterizarlas con su valor promedio.
Palabras clave: Diseño anidado, temperatura del suelo, crisantemo, variabilidad espacial.
ABSTRACT
In a commercial greenhouse cultivation of chrysanthemum Delistar variety, the relation between superficial temperature of soil, height and weight of plants as well as flower diameter to the moment of harvest were studied. There was only statistically significant correlation between the weight of plants, with their height and diameter of their flower. A nested design was used to study the effect of sampling distance on tested variables. Four distances were studied: 30 m, 10 m, 5 m and 0,80 m, we found that most of the variability, in all variables, are presented for distances less than 0,80 m, with very little accumulation of variability at distances greater than 5 m. To use the variables worked with predictive purposes it is recommended that a random sampling and characterized by its average value.
Key words: Nested design, soil temperature, Chrysanthemum, spatial variability
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