Abstract In the Midwest United States, soybean aphids can cause significant economic losses in soybean production. The repeated use of insecticides within the same family has led to the development of insecticide resistance in soybean aphids. Implementing integrated pest management (IPM) and insecticide-resistance management (IRM) strategies can help farmers reduce the frequency of insecticide applications and delay the evolution of soybean aphid resistance while reducing production costs, maintaining yields, and protecting the environment. Farmers play a crucial role in implementing such practices; therefore, to understand farmers’ practices for management of soybean aphids and their perceptions of insecticide resistance, a survey of soybean farmers in Minnesota and North Dakota was conducted in 2021. Overall, the reported decision-making sources were similar for both farmers who changed and those who did not change their aphid management due to insecticide resistance; these were crop consultants and agricultural retailers. The threshold used by farmers in both groups to determine whether to use a foliar insecticide was lower than the research-based threshold for soybean aphids, and farmers were aware that this could contribute to insecticide resistance. In addition, farmers who changed soybean aphid management were more concerned than farmers who did not change about insecticide resistance and were implementing good practices such as scouting, using labeled application rates, and rotating insecticide modes of action. The results of this research can inform the refinement of IPM and IRM programs as well as extension education efforts.

Abstract The destructive nature of desert locust invasions in terms of reduced food security and loss of agricultural income necessitates effective control strategies. While chemical spraying is effective, it is harmful to the environment, human, and animal health. Therefore, an alternative is the implementation of an integrated desert locust management (IDLM) approach that entails surveillance and early warning systems, rational combination of chemicals, biological measures, and indigenous control methods. Adopting IDLM depends on an understanding of human behavior and perceptions as an avenue for disseminating information for effective control. However, there is limited knowledge of the drivers of farmers’ perceptions of IDLM. This study sought to fill the above knowledge gap by applying the principal component analysis method to develop a composite index that was subsequently used in a regression analysis of data collected from a sample of 391 farmers in Isiolo and Meru counties in Kenya. Descriptive results showed that informal sources and channels were the main sources of desert locust information, and most farmers held positive or neutral perceptions. The regression analysis results highlighted the role of formal and informal sources of information, private land ownership, and previous shocks in influencing farmers’ perceptions of integrated desert locust management. The study recommends targeted messaging of desert locust management approaches through coordinated surveillance and timely response by national and international agencies, empowering community leaders as the key entry point, and building local capacity for accurate observation and timely reporting of invasions as measures towards sustainable desert locust control efforts.

Abstract Gnathotrichus materiarius Fitch, 1858 is an invasive bark beetle that colonizes conifers and has spread widely in Europe. The beetle was introduced from North America to Western Europe, where it was first detected in France in 1933. In countries of Western and Northern Europe, the first detections were found at ports or airports, which probably served as sources of further spread. Gnathotrichus materiarius spread eastward to the Czech Republic and other countries in Central Europe from Germany and Poland and spread northward from Italy to Slovenia. The presence of wilting spruces, outbreaks dominated by Ips typographus Linnaeus, 1758, and the subsequent transport of timber have probably accelerated the spread of G. materiarius. It is possible that G. materiarius was imported with timber to Austria, the Czech Republic, and Poland. Although G. materiarius has been present in Europe for almost 100 yr, and even though its host trees include Picea and Pinus spp., which are abundant in Central European forests, no significant damage caused by this beetle has been detected or reported. Gnathotrichus materiarius is a typical secondary pest in that it multiplies on decaying trees or trees already infested and killed by other bark beetle species. It has 2 generations a year in Central Europe. The beetles of G. materiarius occur the whole year, but the flight of adults starts in early May and the offspring beetles emerge in mid-July. The adults of F2 generation overwinter in wood. The best method for monitoring and detecting the presence of G. materiarius is the use of ethanol-baited traps.

Abstract Yam is a widely consumed food in the tropics and subtropics. Determination of pests (pathogens and insects) and diseases (developed pest invasions and symptoms) and the appropriate management practices are critical in existing crop production systems. This study aimed to document farmers’ knowledge about yam pests and diseases and their management practices in southern Ethiopia. Data were collected from 342 systematically selected farmers and 96 yam fields in 5 major yam-growing zones (Dawuro, Gofa, Gamo, Kembata-Tembaro, and Wolaita) in southern Ethiopia using a semi-structured interview guide. The results showed that 54.1% of the farmers saved their planting materials for the next growing season, while 39.2% of the farmers purchased the planting materials from the local market every year. Most farmers (63.5%) reported that the cultivation of yam has been declining annually due to pests and diseases. White yam (Dioscorea rotundata) (Poir, Dioscoreales, Dioscoreaceae) and water yam (Dioscorea alata) are severely damaged by pests and diseases, as perceived by 33.9% and 24.9% of farmers, respectively. Farmers use healthy-looking pest- and disease-free tubers (39.5%), remove infected plants (24.0%), practice crop rotations (17.3%), and use animal manure (7.0%) to manage yam pests and diseases. Farmers’ knowledge can be a starting point for seeking solutions to yam pests and disease risks. This study could play an important role in improving yam cultivation by identifying strategies to improve the recent decline in yam production to meet future food needs for a rapidly growing population.

Abstract Prunus necrotic ringspot virus (PNRSV) and prune dwarf virus (PDV) are pollen-transmitted ilarviruses that affect stone fruits. Both viruses are widespread in peach orchards in the southeastern United States. Although symptoms may not always be present, typical symptoms of PNRSV infection in peaches include stunting, chlorosis, and decline of the tree over time, while PDV infection is associated with stunted growth and shortened internodes. Co-infection with PNRSV and PDV can lead to peach stunt disease, causing yield losses of up to 55%. Here we provide information on the diagnostic methods currently available with considerations for selecting the best method based on plant tissue, sampling season, sample number, and cost. The ecology of PNRSV and PDV, including their movement within and between plants and the role of wild hosts as reservoirs, is also discussed. Both PNRSV and PDV are primarily transmitted through vegetative propagation and pollen; the latter could be horizontal between co-occurring blooming trees and/or vertical from parent to progeny. Certain insect groups play a role in spreading PNRSV and PDV in greenhouse and field settings. Management strategies to prevent virus spread, including clean plant programs which provide virus-negative propagation materials, and cultural management practices, such as removing infected trees, are emphasized to prevent secondary spread. While practical challenges persist in managing infection sources and wild hosts, proactive measures are essential to mitigate the spread of PNRSV and PDV and safeguard the peach industry.

Abstract Two survey questionnaires distributed to Master Gardener (MG) volunteers in Virginia provide valuable insights into their awareness, understanding, and utilization of integrated pest management (IPM). Survey responses reveal a varied level of familiarity with IPM, with a notable percentage of respondents lacking knowledge of the term and differing perceptions of its focus on non-chemical or chemical pest control methods. While respondents generally recommended IPM solutions more than half the time, factors limiting their decision to do so included comfort level, limited understanding or knowledge, lack of training, lack of client interest, and lack of resources. The survey results highlight an agreement among respondents regarding the adequacy of state Cooperative Extension Service materials in addressing IPM. Pest management guides, websites, and fact sheets were the IPM resources most frequently used and perceived as effective. Respondents expressed a preference for fact sheets as the top resource material to enhance public training programs, followed by other multimedia content. Moreover, the survey results provide insights into the specific pest-related needs of Virginia MGs, revealing their priorities in terms of arthropod, vertebrate pest, plant disease, and weed resource topics. Overall, the data from the surveys offers a comprehensive understanding of MG perspectives on IPM, identifying areas for program improvement and providing guidance for the development of targeted resources to enhance MG knowledge and facilitate more effective public outreach.

Abstract The care and maintenance of managed urban greenspaces require integrated pest management (IPM) strategies that are best suited for their local conditions. The evolution of IPM for the public grounds of the U.S. Capitol and Congress provides a unique perspective into the distinct challenges in developing and implementing an overall plant healthcare program for the nation’s historical landscape. The Capitol Grounds and Arboretum (CGA) staff of the Architect of the Capitol are the stewards of this urban greenspace, located in the center of Washington D.C., and present an overview of their historical, current, and prospective IPM developments for urban landscape pest control. With the adoption of holistic, ecological-based pest management practices, successful IPM examples in 3 different landscape habitats on Capitol Hill—turfgrass lawns, urban forestry, and ornamental horticulture display beds—are described. Ultimately, a list of current programming and future opportunities for expanding ecological IPM practices best suited for solving the CGA’s unique landscape pest management challenges are summarized.

Abstract The redbanded stink bug (RBSB), Piezodorus guildinii (Westwood) (Hemiptera: Pentatomidae) is an invasive stink bug species and a polyphagous pest of cultivated crops and non-cultivated wild plants. The increase in soybean cultivation during the 1960s–1970s led to the spread of RBSB as an economic pest of soybean throughout South America, especially in Brazil, Argentina, and Uruguay. In the early 2000s, RBSB became an economic concern to US agriculture and is currently a key species in a stink bug complex that damages soybean in many mid-southern states. RBSB causes extensive damage to soybeans and other economically important leguminous crops by feeding on sap from stems, flowers, and foliage with a preference for pods and seeds, which causes flat pods, reduced seed weight, and germination. Infestation by RBSB may lead to more crop loss per capita than other stink bug species. RBSBs are less susceptible to commonly used agrochemicals than other stink bug species and have developed resistance to many commonly used insecticides. Several alternative control strategies based on a wide variety of methods have been reported in recent years. This review will discuss the distribution, biology, ecology, and various control strategies for integrated management of RBSB in the last 2 decades.