منابع مشابه
Identification of Conditions for Successful Aphid Control by Ladybirds in Greenhouses
As part of my research on the mass production and augmentative release of ladybirds, I reviewed the primary research literature to test the prediction that ladybirds are effective aphid predators in greenhouses. Aphid population reduction exceeded 50% in most studies and ladybird release rates usually did not correlate with aphid reduction. The ratio of aphid reduction/release rate was slightly...
متن کاملSmart Control for Passive Greenhouses
The paper is focused on a new passive greenhouse architecture, provided with cold water heat pumps, wind generator and solar panels. This greenhouse is independent of any energetic infrastructure (electric, gas, hot water). The sizing of each element and the automate control are critical in order to reduce the costs. A simplified mathematical model, able to assist the design and the automate co...
متن کاملMeasurement for intelligent control in greenhouses
The paper describes the design of an environment monitoring system supporting the development of black-box model based greenhouse climate control. Despite many currently available control schemes, only black-box modelling can be carried out efficiently for small or medium size greenhouses. For this large amount of measurements is needed, calling for a new distributed measurement system architec...
متن کاملCotton Aphid (Homoptera:aphididae) Treatment Threshold Incorporating Natural Enemies in Arkansas Cotton
A 12-acre field at the Delta Branch Station in Clarkedale, AR, was subdivided into 16 plots, each ~ 0.75 acre in size (56 rows x 63 m). The experiment consisted of four treatments: (1) untreated control, (2) fungicide treated, (3) conventional threshold, and (4) experimental threshold; with four replicates in a Latin square design. The fungicide treatment was used in an attempt to disrupt the a...
متن کاملBacterial communities of the cotton aphid Aphis gossypii associated with Bt cotton in northern China.
Aphids are infected with a wide variety of endosymbionts that can confer ecologically relevant traits. However, the bacterial communities of most aphid species are still poorly characterized. This study investigated the bacterial diversity of the cotton aphid Aphis gossypii associated with Bt cotton in northern China by targeting the V4 region of the 16S rDNA using the Illumina MiSeq platform. ...
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ژورنال
عنوان ژورنال: Arthropod Management Tests
سال: 2003
ISSN: 2155-9856
DOI: 10.1093/amt/28.1.g21