Review: Resistance as a concomitant of modern crop protection

This paper reviews the impact of resistance to fungicides and insecticides/acaricides on the way crop protection is practised. It is now clear that resistance can develop to virtually any crop-protection product, in any pest, fungal pathogen or even weed. As a limiting factor in crop protection, it is a fact of life. A positive side-effect is the precision with which products are used today, with increasing implementation of Integrated Pest Management (IPM) programmes. This is a vital step towards sustainability. This paper describes: past experiences; current status of resistance; how resistance management influences current crop protection practices; regulatory aspects; and the outlook for the future. It concludes that EU regulations on resistance management must be simple and workable. Chemicals will continue to have a central role in optimising yields from the world's crops, as new tools, including biotechnology, become available for crop protection and resistance management. The crop-protection industry's innovations and product stewardship programmes will contribute to sustainable agriculture. This will provide continued benefits to users, the environment and society. ©1997 SCI     

Sampling plans,selective insecticides and sustainability: the case for IPM as ‘informed pest management’

Integrated Pest Management (IPM) is considered the central paradigm of insect pest management and is often characterized as a comprehensive use of multiple control tactics to reduce pest status while minimizing economic and environmental costs. As the principal precursor of IPM, the integrated control concept formulated the economic theory behind pest management decisions and specified an applied methodology for carrying out pest control. Sampling, economic thresholds and selective insecticides were three of the critical elements of that methodology and are now considered indispensable to the goals of IPM. We examine each of these elements in the context of contemporaneous information as well as accumulated experience and knowledge required for their skillful implementation in an IPM program. We conclude that while IPM is principally about integrating control tactics into an effective and sustainable approach to pest control, this overarching goal can only be achieved through well‐trained practitioners, knowledgeable of the tenets conceived in the integrated control concept that ultimately yield informed pest management. Copyright © 2009 Society of Chemical Industry     

水稻病虫害综合防治五大关系的理性分析

本文论述“预防为主，综合防治”植保方针的理论和实践意义，结合我国水稻病虫害综合防治２０ａ的研究进展，提出综合防治的体系特征及其五大关系：（１）有害生物的种质分化与种型演变；（２）防治体系与预警系统；（３）为害损失与防治指标；（４）多抗性品种的开拓与推广；（５）多效药剂的研究开发与应用。进而探讨ＩＰＭ与可持续性植物保护的相互关系     

Comparative study of 2 protection strategies against Tuta absoluta (Meyrick) in late open field tomato crops in Tunisia

A comparative study of 2 protection strategies against Tuta absoluta (Meyrick) in open field tomato crops was performed. The first strategy used Integrated Pest Management (IPM) through mass trapping, release of Nesidiocoris tenuis and rational use of compatible insecticides. The second strategy was based on conventional use of synthetic insecticides (9 treatments). This study revealed at the end of the culture a 20% infestation rate of leaves in the IPM cropping system versus 98% in the conventional cropping system. The infestation rate of fruit was 18.2% in the IPM cropping system versus 46.8% with the conventional one.     

The Adoption of Integrated Pest Management (IPM) by Tropical Fruit Growers in Thailand as an Example of Change Management Theory and Practice

Integrated pest management (IPM) is a well-known innovation that accords with modern environmental management's (EMs) best practice. In this paper, it is examined in two ways. First, a recent IPM knowledge diffusion project in a region of Thailand, where durian is extensively grown, is described and analysed in relation to the adoption of both its philosophy and methods by growers. Particular use is made of a theory of innovation (Rogers) to depict the intensity, rate and scale of adoption by the durian growers. Second, attention is focused on IPM as an expression of theory and practice in change management. What is shown is that successful adoption of IPM depends upon a number of factors, notably durian growers perceptions of relative advantage and the way the approach is communicated and learned by them through practical application. In terms of change management theory, the intelligent way IPM knowledge was transferred, through the mediating role of agricultural extension workers (AEWs), reflected the current emphasis on collaborative partnerships and learning as an effective means of managing change in complex environments.     

Pesticide use,arthropod fauna and fruit damage in apple orchards in a Nordic climate

BACKGROUND

Integrated pest management (IPM) has a long history in fruit production and has become even more important with the implementation of the EU directive 2009/128/EC making IPM mandatory. In this study, we surveyed 30 apple orchards in Norway for 3 years (2016–2018) monitoring pest- and beneficial arthropods as well as evaluating fruit damage. We obtained growers’ diaries of pest management and used these data to study positive and negative correlations of pesticides with the different arthropod groups and damage due to pests.

RESULTS

IPM level had no significant effects on damage of harvested apples by arthropod pests. Furthermore, damage by arthropods was mainly caused by lepidopteran larvae, tortricids being especially important. The number of insecticide applications varied between 0 and 3 per year (mean 0.8), while acaricide applications varied between 0 and 1 per year (mean 0.06). Applications were often based on forecasts of important pest species such as the apple fruit moth (Argyresthia conjugella). Narrow-spectrum insecticides were commonly used against aphids and lepidopteran larvae, although broad-spectrum neonicotinoid (thiacloprid) insecticides were also applied. Anthocorid bugs and phytoseiid mites were the most abundant natural enemies in the studied orchards. However, we found large differences in abundance of various “beneficials” (e.g., lacewings, anthocorids, parasitic wasps) between eastern and western Norway. A low level of IPM negatively affected the abundance of spiders.

CONCLUSION

Lepidoptera was found to be the most important pest group in apple orchards. Insecticide use was overall low, but number of spray applications and use of broad-spectrum insecticides varied between growers and regions. IPM level did not predict the level of fruit damage by insects nor the abundance of important pests or most beneficial groups in an apple orchard. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.     

An invertebrate harmfulness scale for research on plant pest diversity and impacts

Traditional methods of quantifying the harmful effects of invertebrates on plants require time-consuming identification of large numbers of individuals at species level. Collected specimens usually are killed; this may be unacceptable for some strictly protected species and may bias the results of subsequent surveys at the same site.

We developed a “harmfulness scale” for quick, non-invasive assessment of invertebrate impacts on plants, and used the scale to test differences in invertebrate attack on species of Balsaminaceae, Polygonaceae and Asteraceae growing in lowland and mountains in Poland. In 2010–2011, we recorded 9190 invertebrates and identified them in situ to family or superfamily level. Among them were 7593 pests, accounting for 82.6% of all recorded organisms. Pests were three times more numerous in the mountains than in the lowland. Balsaminaceae were most heavily attacked by pests (92.9% of all organisms detected on them). Aphidoideae were the most numerous pests.

This method can help reduce the costs and labour required for this type of research, facilitating progress in theoretical biology and in the development of practical phytosanitary measures.     

TEAM Leafy Spurge: An Areawide Pest Management Program

The Ecological Areawide Management (TEAM) Leafy Spurge project is a United States Department of Agriculture and Agricultural Research Service (USDA–ARS) regional, Integrated Pest Management (IPM) program focused on the Little Missouri River drainage in the states of North and South Dakota, Montana, and Wyoming, U.S.A. TEAM Leafy Spurge project represents the first large-scale, systematic study and demonstration of weed management alternatives under USDA–ARS's Areawide Pest Management Program. The other three projects previously approved under the program targeted insect pests. TEAM Leafy Spurge's primary goal has been to demonstrate the use of ecologically based IPM strategies to achieve effective, affordable leafy spurge control. TEAM Leafy Spurge is co-chaired and overseen by the USDA–ARS in cooperation with the USDA–Animal and Plant Health Inspection Service. Both agencies have many years of experience in research and implementation of leafy spurge control tactics as well as valuable contacts and resources. Together those federal partners make a powerful team to address the leafy spurge problem on a multi-state basis. Additional federal agencies participating in TEAM Leafy Spurge include: Bureau of Land Management, U.S. Forest Service, National Park Service, Bureau of Indian Affairs, Bureau of Reclamation, and U.S. Geological Service. State partners include: state departments of agriculture and other state agencies, Cooperative Extension Services, land grant universities, and county weed managers, while private sector representatives include landowners and ranchers. A non-partisan ad hoc committee consisting of state and federal researchers, land managers, representatives from local, state, and federal entities, and private landowners/ranchers provides guidance and helps to ensure the quality and applicability of the program. The extensive partnerships are of particular importance because they help to ensure continued dissemination of information past the limited life span of TEAM Leafy Spurge, which is set to expire in 2003.The five components of TEAM Leafy Spurge research and demonstration project are: (1) Program management; (2) Operations; (3) Assessment; (4) Supporting research, and (5) Technology transfer. As of this writing, the bulk of the research work has been completed and now TEAM Leafy Spurge is focusing its energies on assessment and technology transfer projects. Where available, brief outlines of research results are included here in addition to discussion of the program's key components, overall structure and general operation.     

红火蚁信息素及其在化学防治中的应用研究进展

文章介绍了红火蚁的危害特征,分析了目前国内外红火蚁防治的主要方法,对利用化学信息素类物质防治红火蚁的研究方法及进展进行了综述;通过借鉴化学信息素在其他害虫防治中的应用,重点分析了化学信息素在红火蚁防治中的必要性和可能性,对红火蚁相关信息素的特点和化学结构进行了详细描述,并介绍了相关化学信息素的合成方法,揭示了信息素类物质在红火蚁综合防治中的重要性及优越性。     

Effect of synthetic insecticides on the larvae of <Emphasis Type="Italic">Coccinella septempunctata</Emphasis> from Greek populations

Coccinella septempunctata L. is one of the most abundant ladybird species in Greece, preying on several aphid species and other arthropods, of which many are pests of cultivated plants. These pests are usually controlled with chemical insecticides. During this process, however, beneficials are also exposed to pesticides. The development of Integrated Pest Management (IPM) programs against aphids requires the evaluation of the effects of insecticides on beneficial insects. We evaluated the LD₅₀ of imidacloprid, acetamiprid, bifenthrin and deltamethrin on first, second, third and fourth instar larvae of C. septempunctata by topical application. Moreover, we studied their sublethal effects (LD₁₀) on the development, weight and prey consumption of fourth instar larvae. The topical application bioassays showed that deltamethrin and bifenthrin were highly toxic to all larval instars, whereas imidacloprid and acetamiprid were less toxic to fourth instar larvae. The LD₁₀ dose significantly affected, developmental time, adult weight and daily predation. These results show the importance of assessing potential effect of insecticides on C. septempunctata for developing effective IPM programs of aphids in Greece.     

Integrated control and integrated pest management in Japan: the need for various strategies in response to agricultural diversity

An urgent need exists in Japan to reduce the use of crop protection chemicals, increase food safety, find an alternative to methyl bromide, and adopt sustainable agricultural practices. Integrated control and integrated pest management (IPM) are powerful approaches to resolve these problems. Integrated control, as described by Stern et al. (Hilgardia, 29: 81–101, 1959), was translated as sougouboujo in Japanese by Japanese entomologists and has become popular. However, this concept was first reported for rice diseases in Japan by Ito (Itoh, 28:1–204, 1932), to provide preventive control of three principal rice diseases using a combination of measures that inhibited primary infection. Many scientists in Japan have conducted research on sougouboujo. The term is still used by Japanese plant pathologists even though the Japanese government developed IPM guidelines in the 2000s. The sougouboujo concept described by Ito may be considered a type of preventive IPM based on biology. With this previous work as a foundation, research on sougouboujo in Japan is introduced as representing “integrated control.” In this report, I introduce the history of IPM in Japan including the new system of checklists based on the IPM guidelines of the Ministry of Agriculture, Forestry and Fisheries (MAFF) and a new IPM strategy to manage diseases caused by soilborne pathogens.     

Integrated pest management in western flower thrips: past,present and future

Western flower thrips (WFT) is one of the most economically important pest insects of many crops worldwide. Recent EU legislation has caused a dramatic shift in pest management strategies, pushing for tactics that are less reliable on chemicals. The development of alternative strategies is therefore an issue of increasing urgency. This paper reviews the main control tactics in integrated pest management (IPM) of WFT, with the focus on biological control and host plant resistance as areas of major progress. Knowledge gaps are identified and innovative approaches emphasised, highlighting the advances in ‘omics’ technologies. Successful programmes are most likely generated when preventive and therapeutic strategies with mutually beneficial, cost‐effective and environmentally sound foundations are incorporated. © 2017 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.     

Using new egg parasitoids (Trichogramma spp.) to improve integrated management against Tuta absoluta

This study is the first step of the TutaPI program (2011–13) to decrease the costs of Integrated Pest Management (IPM) strategies against Tuta absoluta in France by investigating new beneficial insects. Currently, the association of predator/egg parasitoid (Macrolophus pygmaeus and Trichogramma achaeae, respectively) in IPM strategies are quite effective, but expensive. Sixty‐four new potential strains from 19 Trichogramma species originating from different regions of the world (from the collection of Trichogramma at INRA Provence Alpes Côte d'Azur (PACA), France) were studied in this work. A screening study was performed on T. absoluta eggs on isolated tomato leaves (for 24 h at 25 ± 1°C, RH 75 ± 5% and 16 h light : 8 h dark). The proportion of parasitized T. absoluta eggs varied greatly (between 0 and 73%) depending on the different strains used. Levels of parasitism by females, equal to or higher than that of T. achaeae, were observed in 14 of the strains tested among eight species (four from France, four from elsewhere in Europe). The proportion of females that parasitized T. absoluta eggs was significantly different between strains (from 0 to 100%). Experimental results allowed about half of the 64 initial strains to be eliminated before the next steps: tests on a larger scale (mesocosm, and then in the greenhouse and field).     

The importance of forecasting and warning systems in implementation of integrated pest management in apple orchards in Turkey*

Integrated Pest Management (IPM) has been widely implemented in apple orchards in various regions of Turkey. Between 1995 and 1999, in Central Anatolia and the Aegean Region, apple scab (Venturia inequalis) and codling moth (Cydia pomonella) were key pests, and implementation of pest control was based on forecasting and warning systems. During the project, orchards in which IPM was implemented and in which farmers applied conventional practices were compared. In nine provinces in which IPM projects were carried out in 1999, the damage due to codling moth was 0–1.3% in IPM orchards while it was 0.4–21.8% in nearby non‐IPM orchards. It is clear that damage did not reach the acceptable threshold level of 2% in any of the IPM orchards, while damage was much higher than the threshold in conventionally‐farmed orchards. The number of fungicide applications against apple scab decreased to 5–6 applications from 10–15 applications in the Eğirdir district of the Isparta Province in 1996 as a result of IPM implementation. No insecticides were applied against codling moth in IPM orchards in the Nigde Province in 1998 and 1999 because population levels of the pest were low and under the economic threshold. Apple producers received training and 1200 producers from Central Anatolia became experts in IPM for their own orchards, learning to make appropriate decisions about pest control. The Apple IPM Guideline was prepared and disseminated. In Turkey modern equipment for forecasting and warning systems was employed and, in the last decade, forecasting and warning networks have been improved. Computer‐based systems have increased the speed and accuracy of forecasting as well as decreasing its costs. A computerized national forecasting network in apple orchards now transmits data from the field to system headquarters automatically. The national forecasting network has been expanded and covered 12 208 800 apple trees in 34 provinces in 2006, using 115 electronic forecasting and warning stations.     

Computer aids to integrated control in peach orchards in Emilia-Romagna (Italy)1

An Integrated Pest Management (IPM) programme on vineyards and orchards has been applied since 1974 in Emilia-Romagna (northern Italy). The Entomology Institute of Piacenza has the scientific responsibility for peach, plum and apricot orchards. Data is collected in the field by a team of technicians with province-level co-ordination. Directions for control are given directly to farmers or through answering machines, Videotel or weekly bulletins. Data from orchards, concerning the pest and disease situaton, are processed by two Hewlett Packard 9000 computers: an HP 9845B and an HP Vectra RS/20. With the latter, data exchange is possible with MS DOS operating systems, allowing data input from a regional computer network now at the development stage.     

Identifying obstacles and ranking common biological control research priorities for Europe to manage most economically important pests in arable,vegetable and perennial crops

EU agriculture is currently in transition from conventional crop protection to integrated pest management (IPM). Because biocontrol is a key component of IPM, many European countries recently have intensified their national efforts on biocontrol research and innovation (R&I), although such initiatives are often fragmented. The operational outputs of national efforts would benefit from closer collaboration among stakeholders via transnationally coordinated approaches, as most economically important pests are similar across Europe. This paper proposes a common European framework on biocontrol R&I. It identifies generic R&I bottlenecks and needs as well as priorities for three crop types (arable, vegetable and perennial crops). The existing gap between the market offers of biocontrol solutions and the demand of growers, the lengthy and expensive registration process for biocontrol solutions and their varying effectiveness due to variable climatic conditions and site‐specific factors across Europe are key obstacles hindering the development and adoption of biocontrol solutions in Europe. Considering arable, vegetable and perennial crops, a dozen common target pests are identified for each type of crop and ranked by order of importance at European level. Such a ranked list indicates numerous topics on which future joint transnational efforts would be justified. © 2016 Society of Chemical Industry     

Spatial analysis of pheromone trap catches of codling moth (<Emphasis Type="Italic">Cydia pomonella</Emphasis>) in two heterogeneous agro-ecosystems,using geostatistical techniques

From 2000 to 2002, local distribution and dispersion patterns of the codling moth,Cydia pomonella (L.) (Lepidoptera: Tortricidae), captured in pheromone traps were investigated in two heterogeneous agro-ecosystems (A and B) of the Molise region, in central Italy. The main objectives of this study were to determine the temporal and spatial variations in distribution and abundance of codling moth inside and outside apple orchards located in these study areas, and to evaluate the importance of the presence of several host plants in relation to the observed distribution. Trap catches of male moths were clumped during almost all sampling weeks. Spatial characterizations obtained by means of geostatistical methods illustrate that the high trap capture foci were confined to the productive apple orchards for both agro-ecosystems or in small groups of apple trees, and in the case of study area B, in a zone containing pear trees, service trees and walnut trees. Occasionally moths were found in traps installed outside these zones. Furthermore, the position of high male population foci seems not to change during a single flight period. The results obtained are discussed with respect to the improvement of Integrated Pest Management programs employed in apple orchards situated in heterogeneous landscapes. http://www.phytoparasitica.org posting July 14, 2004.     

Assessing the integrated pest management practices of southeastern US ornamental nursery operations

BACKGROUND: The Southern Nursery Integrated Pest Management (SNIPM) working group surveyed ornamental nursery crop growers in the southeastern United States to determine their pest management practices. Respondents answered questions about monitoring practices for insects, diseases and weeds, prevention techniques, intervention decisions, concerns about IPM and educational opportunities. Survey respondents were categorized into three groups based on IPM knowledge and pest management practices adopted. RESULTS: The three groups differed in the use of standardized sampling plans for scouting pests, in monitoring techniques, e.g. sticky cards, phenology and growing degree days, in record‐keeping, in the use of spot‐spraying and in the number of samples sent to a diagnostic clinic for identification and management recommendation. CONCLUSIONS: Stronger emphasis is needed on deliberate scouting techniques and tools to monitor pest populations to provide earlier pest detection and greater flexibility of management options. Most respondents thought that IPM was effective and beneficial for both the environment and employees, but had concerns about the ability of natural enemies to control insect pests, and about the availability and effectiveness of alternatives to chemical controls. Research and field demonstration is needed for selecting appropriate natural enemies for augmentative biological control. Two groups utilized cooperative extension almost exclusively, which would be an avenue for educating those respondents. Copyright © 2012 Society of Chemical Industry     

In-vitro characterisation of the four lineages of <Emphasis Type="Italic">Phytophthora ramorum</Emphasis>

Phytophthora ramorum is a plant pathogen with a wide host range including many ornamental hosts and tree species. In Ireland and the UK P. ramorum is known to cause sudden larch death. There are four distinct genetic lineages of P. ramorum, with the fourth lineage (EU2) described in 2012 and only present in Northern Ireland and Scotland. In this work, experiments that compare all four lineages of P. ramorum using several phenotypic characters are described. A total of 166 isolates (EU1: 116, EU2: 40, NA1: 8, NA2: 2) from several EU countries and the United States and several hosts were amassed, and a selection of isolates were compared according to standard phenotypic tests. The EU1 and EU2 isolates tested were all A1 mating type. Regarding linear growth rate, we found the isolates ranked as follows EU2 > NA2 > EU1 > NA1, with all lineages growing fastest at 20 °C. The lineages ranked as NA2 > EU1 > EU2 > NA1 based on their in-vitro aggressiveness on detached wounded Rhododendron leaves, all lineages most aggressive at 20 °C. At 20 °C, we found that there was no significant difference between the EU1 and EU2 lineage based on their linear growth rate or in-vitro aggressiveness. Temperature, host ramet and P. ramorum lineage all had statistically significant effects on the observed aggressiveness of the isolates. From an experimental point of view, our results are broadly in agreement with other phenotypic studies of P. ramorum, finding variation between the lineages, but also variation within the lineages. From an applied perspective, our work on Rhododendron indicates that the EU1 and EU2 lineages pose similar levels of threat to plant health in Ireland and the UK, however, how these results transfer to other hosts (e.g. Larix kaempferi) needs more study.     

CAPRA: the EPPO Computer Assisted PRA scheme*

The EPPO Secretariat has developed computer software for Pest Risk Analysis (PRA) within the EC 7th Framework Programme PRATIQUE (Enhancements of Pest Risk Analysis Techniques) and with the support of the EPPO Panels. The software, Computer Assisted PRA (CAPRA), aims to assist pest risk analysts to run the EPPO Decision‐support scheme for pest risk analysis [EPPO Standard PM 5/3(5) Decision‐support scheme for quarantine pests], and other decision‐support schemes. It is freely avaliable on the EPPO website or on http://capra.eppo.org/ .