منابع مشابه
Comparison of management strategies for squash bugs (Hemiptera: Coreidae) in watermelon.
Two watermelon pest management practices, a squash trap crop and a standard recommendation using soil-applied carbofuran, were compared using large-scale field plots to assess trap crop suitability as a replacement for the standard in 2000, 2001, and 2002. In both systems, foliar insecticide applications were used to control squash bugs when populations exceeded threshold levels. During 2001 an...
متن کاملOverwintering squash bugs harbor and transmit the causal agent of cucurbit yellow vine disease.
Since 1988, cucurbit crops, particularly watermelon, cantaloupe, and squash, grown in Oklahoma and Texas have experienced devastating losses from cucurbit yellow vine disease (CYVD), caused by the phloem-limited bacterium Serratia marcescens Bizio. Squash bug, Anasa tristis (De Geer), is a putative vector of the pathogen. In 2000-2001, overwintering populations of squash bug collected from DeLe...
متن کاملSearching Bugs by Visualizing Computations
It is the basic credo of declarative programming that abstracting from certain aspects of program executions greatly improves the quality of the written code: Typical sources of errors are principally omitted, like issues of memory management, type errors and multiple allocation of variables. The program is much nearer to the logic of the implemented algorithm than to its execution. This makes ...
متن کاملRoad-killed common toads (Bufo bufo) in Flanders (Belgium) reveal low prevalence of ranaviruses and Batrachochytrium dendrobatidis.
Road-killed common toads (Bufo bufo; n51,740) from Flanders, Belgium, were tested for ranavirus and Batrachochytrium dendrobatidis (Bd) using polymerase chain reaction. Both infections were present at a very low prevalence (,0.2% with a confidence interval of 95% for ranavirus and 0.63% for Bd). Healthy amphibians can be asymptomatic carriers of diseases responsible for devastating amphibian po...
متن کاملCharacterization of Resistance to Squash Silverleaf Disorder in Summer Squash
Feeding nymphs of the silverleaf whitefly, Bemisia argentifolii (formerly known as Bemisia tabaci Gennadius, B strain), cause a physiological disorder known as squash silverleaf (SSL) in summer squash (Cucurbita pepo L.). This disorder is characterized by a progressive silvering on the upper leaf surface caused by the development of large air spaces between the palisade mesophyll cells and the ...
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ژورنال
عنوان ژورنال: Science
سال: 1901
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.14.360.816