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Modelos de regresión para estimar el peso seco de órganos y área del limbo del duraznero, variedad jarillo

Quevedo García, Enrique; Cancino Escalante, Giovanni Orlando; Barragán Torres, Anderson Rodrigo (Bogotá : Universidad de Ciencias Aplicadas y Ambientales, 2017, 2017-07)

Non-destructive, rapid and reliable methods for estimating the area of limb and dry weight of peach organs for the Jarillo variety are limited. Therefore, the aim of the present study was to ...
Registro y notas bionómicas de una nueva plaga del aguacate laurencella colombiana (Hemiptera: Margarodidae) en Colombia

Gil P., Zulma Nancy; Posada F., Francisco Javier; Pérez S., Myriam; Cárdenas M., Reinaldo (Bogotá : Universidad de Ciencias Aplicadas y Ambientales, 2007, 2007-07)

In a survey carried out on avocado insect pests in Villamaria (Caldas, Colombia), for the first time a Margarodidae (Hemiptera), was found. The insect was identified by Dr. Imre Foldi (Muséum National d’Histoire Naturelle, ...

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Modelos de regresión para estimar el peso seco de órganos y área del limbo del duraznero, variedad jarillo
...
Quevedo García, Enrique | 2017-07

Non-destructive, rapid and reliable methods for estimating the area of limb and dry weight of peach organs for the Jarillo variety are limited. Therefore, the aim of the present study was to produce a statistical model to estimate the area and dry weight of limb fruit and branches of this specific variety that can be used as a tool to facilitate data collection. The study was performed in the mountains of Pamplona, Northwest of Colombia. Two Hundred and forty leaves (240) from 2.5 months old limb, 240 fruits of 3.5 and 7 months old fruits and 240 branches of 9 months old branches were selected and used to develop the model. Results of the regression analysis indicated that several models were suitable to estimate the area limb and the dry weight. The observed and estimated data were compared by establishing the relationship by means of a simple linear regression for the branch and limb. The relation for the fruit was quadratic type. The number of buds, volume of branches, length of mixed branches and basal/mean diameter, dry weight of fruit, sampling, longitudinal diameter of the fruit, altitude, length of limb, dry weight of limb, the product of the length by the width of the limb, width of the limb, should be considered in the estimation of the area limb and dry weight of the peach organs of P. persica (L.) Jarillo variety.

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Registro y notas bionómicas de una nueva plaga del aguacate laurencella colombiana (Hemiptera: Margarodidae) en Colombia
...
Gil P., Zulma Nancy | 2007-07

In a survey carried out on avocado insect pests in Villamaria (Caldas, Colombia), for the first time a Margarodidae (Hemiptera), was found. The insect was identified by Dr. Imre Foldi (Muséum National d’Histoire Naturelle, Entomology, Paris) and Dr. Gillian W. Watson (CABI Bioscience Identification Services, England) as Laurencellacolombiana. The insect lives in groups and the different stages can be found together. They feed sucking on leaves, branches and trunks. The damage is especially serious on young branches and leads to the desiccation of terminal shoots and stem. The insect covers itself by white waxy secretions and excretes abundant honeydew, which encourages the development of sooty mould.

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Modelos de regresión para estimar el peso seco de órganos y área del limbo del duraznero, variedad jarillo ﻿

Registro y notas bionómicas de una nueva plaga del aguacate laurencella colombiana (Hemiptera: Margarodidae) en Colombia ﻿

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Modelos de regresión para estimar el peso seco de órganos y área del limbo del duraznero, variedad jarillo

Registro y notas bionómicas de una nueva plaga del aguacate laurencella colombiana (Hemiptera: Margarodidae) en Colombia

Modelos de regresión para estimar el peso seco de órganos y área del limbo del duraznero, variedad jarillo

Registro y notas bionómicas de una nueva plaga del aguacate laurencella colombiana (Hemiptera: Margarodidae) en Colombia