101,475 research outputs found

    Organic Centre Wales Technical Note 3: Biology and Management of Soil pests

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    The majority of crops grown in the UK are host to single or multiple insect pests that feed on the growing plant at some stage of their life cycle. Insect pest is not strictly correct terminology because the pests come from a wide range of families or groups, from Coleoptera (beetles), Diptera (true flies), Lepidoptera (butterflies and moths), Molluscs (slugs and snails) and Nematodes. This technical sheet lists major and minor pests, provides a simple key for identifying soil pests, lists requirements for effective cultural control of pests and lists sources of further information

    Dry Bean Pest Scouting Report

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    A survey of dry bean pests was conducted on farms throughout Vermont during the 2016 season. Plant diseases and insect pests were scouted on five Vermont farm locations in the towns of Alburgh, Cambridge, Danby, Glover, and North Ferrisburg. Unknown disease and insect samples were taken and identified with assistance from the UVM Plant Diagnostic Laboratory (PDC)

    Economic Thresholds for Central European and North American Wheat Insects

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    The economic thresholds for implementing control of 24 wheat insect pests from Central Europe and North America are discussed. Additional studies on wheat pests are necessary to better define the existing thresholds

    Insect Pests of Christmas Trees

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    Impact of climate change on insect pests of trees

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    There are many interactions and it is exetremely difficult to predict the impact of climate change on insect pests in the future, but we may expect an increase of certain primary pests as well as secondary pests and invasive specie

    Improving detection probabilities for pests in stored grain

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    BACKGROUND: The presence of insects in stored grains is a significant problem for grain farmers, bulk grain handlers and distributors worldwide. Inspections of bulk grain commodities is essential to detect pests and therefore to reduce the risk of their presence in exported goods. It has been well documented that insect pests cluster in response to factors such as microclimatic conditions within bulk grain. Statistical sampling methodologies for grains, however, have typically considered pests and pathogens to be homogeneously distributed throughout grain commodities. In this paper we demonstrate a sampling methodology that accounts for the heterogeneous distribution of insects in bulk grains. RESULTS: We show that failure to account for the heterogeneous distribution of pests may lead to overestimates of the capacity for a sampling program to detect insects in bulk grains. Our results indicate the importance of the proportion of grain that is infested in addition to the density of pests within the infested grain. We also demonstrate that the probability of detecting pests in bulk grains increases as the number of sub-samples increases, even when the total volume or mass of grain sampled remains constant. CONCLUSION: This study demonstrates the importance of considering an appropriate biological model when developing sampling methodologies for insect pests. Accounting for a heterogeneous distribution of pests leads to a considerable improvement in the detection of pests over traditional sampling models

    Small Grain Disease and Insect Pest Scouting Report

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    A survey of small grain diseases and insect pests were conducted in Vermont and Massachusetts during the 2015 growing season. Pests were scouted at six Vermont farm locations in the towns of Alburgh, Berlin, Bridport, North Troy, Shelburne, and Shoreham, as well as in Northfield, Massachusetts

    Use of Combined Economic Threshold Level to Control Insect Pests

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    The economic threshold level (ETL) is a key factor to be studied for insect pests control. It is difficult to monitor cotton insect pests separately, and it is not reasonable to base decision-making for spraying on an ETL of individual insects and ignore sub-levels of other cotton insect pests. So, we want to use a combined ETL in a way of insect units, to put all major insect pests to consideration as an insect pests‘ complex. This means delaying the first spray to give a chance for natural enemies to develop and then lower the number of sprays and consequently reduce the cost of production

    Small Grain Disease and Insect Pest Scouting Report

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    A survey of small grain diseases and insect pests were conducted in Vermont, New York and Massachusetts during the 2017 growing season. Pests were scouted on seven Vermont farm locations in the towns of Alburgh, Berlin, Bridport, North Ferrisburgh, North Troy, Shelburne, and Shoreham, as well as in Essex, New York and Northfield, Massachusetts. Winter and spring wheat (heirloom and commercially available), as well as spring barley and spelt, were scouted between spike emergence and flowering, and again at the soft dough growth stage. Disease and insect samples were taken and identified with assistance from the University of Vermont (UVM) Plant Diagnostic Clinic

    Jenis Serangga Hama Pada Tanaman Cengkeh (Syzygium aromaticum) di Desa Salumpaga Kecamatan Tolitoli Utara Kabupaten Tolitoli

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    Cloves (Syzygium aromaticum) are native to Indonesia which have high social and economic value, however cloves also have different types of pests. The latest information on insect pests in cloves is still very limited. This study aims to describe the types of insect pests found in clove (Syzygium aromaticum). This type of research is a descriptive exploratory research. Pest insect samples were taken at 3 observation locations, namely at a slope of 0%, a slope of 15% and identification of the pests found. The results showed that at a 0% slope, the insect pests found were Coptotermes gestroi and Coptocercus biguttatus. At a slope of 15%, the insect pests found were Coptotermes gestroi, Hexamitodera semivelutina, Coptocercus biguttatus and Nothopeus sp
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