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|Title: ||Métodos de amostragem para a detecção e estimativa das populações de insectos associados ao arroz pós-colheita|
|Authors: ||Mexia, António|
|Issue Date: ||May-2003|
|Citation: ||Encontro Nacional de Protecção Integrada, 6º, Castelo Branco, 2003|
|Abstract: ||The present work has the objective to implement the components of Integrated Pest Management into the
current system of the paddy rice post-harvest. The assays had been initiated in bulk paddy stored in
warehouse and silos after the harvest. Some methods of sampling were evaluated to get more quantitative
estimates of insect pest populations in the cereal: examination of grain samples and investigating pitfall and
StorGard WB Probe II traps without attraction baits. Also, Storgard Dome traps were used, with atractants
(food and pheromones) for ascertaining residual infestations under drying silos.
The results show that traps are much more efficient than the examination of grain samples for determining
infestation. The StorGard WB Probe II traps captured significantly more insects and more species than did
pitfall traps. StorGard WB Probe II traps have the advantage to intercept insects to some depths, are easy to
handle, are durable, are continuously acting and can detect the insect populations at low densities.
The Storgard Dome traps captured several insect species and was useful in the detection of sources of
The relative density and the spatial pattern were examined for Cryptophagus saginatus, Sitophilus zeamais, S.
oryzae, Coninomus constrictus, Carpophilus dimediatus, Ptinus raptor, Oryzaephilus surinamensis, Tribolium
castaneum, Gnathocerus cornutus and Sitotroga cerealella.|
|Appears in Collections:||SPI - Comunicações em Actas de Conferências|
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