A5038642482- Insect-Plant Interactions and Control
- Insect and Pesticide Research
- Hemiptera Insect Studies
- Forest Insect Ecology and Management
- Insect Pest Control Strategies
- Entomopathogenic Microorganisms in Pest Control
- Insect Resistance and Genetics
- Insect behavior and control techniques
- Plant and Fungal Interactions Research
- Insect Pheromone Research and Control
- Insects and Parasite Interactions
- Rangeland and Wildlife Management
- Plant Virus Research Studies
- Collembola Taxonomy and Ecology Studies
- Species Distribution and Climate Change
- Agricultural pest management studies
- Research on scale insects
- Diverse Educational Innovations Studies
- Greenhouse Technology and Climate Control
- Insect Utilization and Effects
- Animal and Plant Science Education
- Turfgrass Adaptation and Management
- Soil Geostatistics and Mapping
- Plant Surface Properties and Treatments
- Plant responses to water stress
University of California Division of Agriculture and Natural Resources
2018-2025
University of California, Davis
2014-2022
Zero to Three
2020
Virginia Cooperative Extension
2013-2018
Cornell Cooperative Extension Association of Jefferson County
2015-2017
Virginia Tech
2013-2016
Farmers’ knowledge on pesticides and their safe use are critical for implementing effective pest management program. A household survey was conducted using the semi-structured questionnaire to evaluate vegetable growers’ pesticide safety practices in Nepal. Results indicated that chemical were primary choice of over 80% growers management. Notably, 90% aware adverse effects human health environment. Over 84% used at least one form personal protection equipment (PPE) during spray or handling,...
Abstract High-temperature events can influence insect population dynamics and could be especially important for predicting the potential spread establishment of invasive insects. The interaction between temperature environmental humidity on populations is not well understood but a key factor that determines habitat range size. brown marmorated stink bug, Halyomorpha halys (Stål), an agricultural pest in United States Europe, which causes serious economic damage to wide crops. This insect’s...
Abstract The carpophilus beetle, Carpophilus truncatus Murray, 1864 (Coleoptera: Nitidulidae) is an invasive pest recently detected in California’s tree nut crop orchards. Here we report a simple, labor-saving, and cost-effective rearing system for C. utilizing banana industrial sand components. Banana slices served as both larval adult diet source well moisture to facilitate pupation within the underlying sand. combination of single container successfully supported development all life...
California is the largest agricultural economy in United States; however, its current and projected climate risks pose significant challenges. Farmers will need to adapt change their farming practices. The goal of this needs assessment was understand farmers' perceptions experiences with exposures; risk management practices they currently use; what tools resources would assist them making strategic decisions. A statewide survey conducted through Qualtrics farmers ( n = 341). Results showed...
California's agricultural sector is the highest valued in United States. It also a global leader production of various specialty crops, including three major tree nuts - almond, walnut, and pistachio. These nut crops accounted for approximately 16% state's total economy. Current future changes climate pose many challenges agriculture impacts related to increased pest pressure due elevated temperatures are significant. The navel orangeworm, Amyelois transitella (Walker), most challenging...
California is a global leader in production and supply of walnuts almonds, the state largest producer peaches U.S. These crops have an important contribution to California's agricultural economy. Damages these from lepidopteran pests, mainly Codling moth (Cydia pomonella) (family: Tortricidae), Peach twig borer (Anarsia lineatella) Gelechiidae) Oriental fruit (Grapholita molesta) are still high, despite improvement pest management activities. Given that temperature increase can directly...
Grape root borer, Vitacea polistiformis (Harris) (Lepidoptera: Sesiidae) is a potentially destructive pest of grape vines, Vitis spp. in the eastern United States. After feeding on roots for ≍2 yr Virginia, larvae pupate beneath soil surface around vine base. Adults emerge during July and August, leaving empty pupal exuviae or protruding from soil. Weekly collections an ≍1-m-diameter weed-free zone base grid sample vines Virginia vineyards were conducted 2008-2012, their distribution was...
Grapevine red blotch disease (GRBD) is an emerging caused by grapevine virus (GRBV). It widespread in most United States winegrape production regions and differential spread dynamics have been reported between the regions. This study surveyed eight vineyard sites southern Oregon over four years for progression of GRBD incidence. The vineyards included five that were or older three three-years-old. incidence blocks ranged from 2.81 to 58.78%, while younger it 0.29 1.11%. Some implemented...
Invasive species threaten the productivity and stability of natural managed ecosystems. Predicting spread invaders, which can aid in early mitigation efforts, is a major challenge, especially face climate change. While ecological niche models are effective tools to assess habitat suitability for such have rarely been created invasive pest with rapidly expanding ranges. Here, we leveraged national monitoring effort from 543 sites over 3 years factors mediating occurrence abundance brown...
The brown marmorated stink bug, Halyomorpha halys (Stål), is an invasive species from Asia. This polyphagous, bug has posed a serious production challenge in several crop the areas where established. insect spread to all mainland states U.S. about one and half decades after its first detection Pennsylvania. types of crops reported have been infested by this increased with new geographic locations. In study, we report evidence H. infestation almond fruit California. Stanislaus County, adult...
The hunting billbug, Sphenophorus venatus vestitus Chittenden (Coleoptera: Curculionidae), is an important turfgrass pest, especially in sod farms. S. larvae feed on the stems and roots of turfgrass. Damaged loosely held together poses a challenge for machine harvesting. Additionally, normal growth affected, after winter dormancy. Because are hidden inside or under soil, larval management challenging. To improve sampling management, spatial distribution patterns adults were assessed at four...
Understanding the spatio-temporal dynamics of prey and predator distributions can provide valuable insights into pest management strategies conservation natural enemies in agro-ecosystems. The alfalfa weevil, Hypera postica (Gyllenhal), is an economically important throughout western United States. Coccinellids nabids are among most this species, contributing to biological control H. fields. these two groups were investigated using 81 (= 9 × grid) sample points each five fields north-central...
Larval grape root borer, Vitacea polistiformis (Harris) (Lepidoptera: Sesiidae), feed on roots of wild Vitis and commercially important species rootstocks in portions the eastern United States. Grape borer pupal exuviae sampling Virginia vineyards from 2008 to 2012 revealed that infestation levels varied substantially among 48 vineyard blocks. Data horticultural (cultivar, rootstock, vine age, planting area), cultural (insecticide use, ground cover, weed control, irrigation), environmental...
Abstract The navel orangeworm, Amyelois transitella (Walker), is the most significant pest of California almonds. Direct feeding on kernel by larvae causes reductions in salable crop, crop quality, and exportability. Pheromone mating disruption (MD) targeting orangeworm a relatively new technique with potential to improve management. In 2017, we used replicated ~16-ha plots compare efficacy four commercial MD systems (CheckMate, Cidetrak, Isomate, Semios) for their relative impacts number...
Abstract Almond, Prunus dulcis (Miller) D. A. Webb, is an important tree nut crop cultivated primarily in the Mediterranean climatic regions. However, United States, specifically state of California, largest producer and exporter almond nuts world. At least 60 species insect pests attack almonds worldwide. Hemipterans can be orchards. Some hemipteran include lace bugs, plant stink leaffooted bugs. These use needle-like mouthparts to pierce feed upon fruits or other parts plant, causing...
A field study was conducted to evaluate the efficacy of two most virulent native isolates insect pathogenic fungi (Metarhizium anisopliae and Beauveria bassiana) compared with four commercial biopesticides against Chickpea pod borer (Helicoverpa armigera Hubner) at Chitwan, Nepal. The number H. lavae observed in plots treated M. B. bassiana were significantly lesser than control during vegetative, flowering setting stage chickpea. Similarly, chickpea yield higher control, however NPV Bt...
Grape root borer, Vitacea polistiformis (Harris), is an oligophagous and potentially destructive pest of grape in commercial vineyards throughout much the eastern United States. Larvae feed on vine roots, although little known about their below-ground interactions with host plants. The behavioral response groups borer neonates to stimuli from nonhost roots was evaluated single paired bioassays which were presented opposing wells attached bottom petri dish arenas. Stimulus sources included...
Grape root borer, Vitacea polistiformis (Harris), is an economically important and potentially destructive pest of grape vines in portions the eastern United States. Its oligophagous larvae feed on roots cultivated wild Vitis species. In commercial vineyards, adult females oviposit aboveground parts other vegetation vine rows. The loosely attached eggs are thought to drop ground and, upon eclosion, neonates quickly burrow into soil search for roots. Although vineyard infestation by borer...
California is a global leader in production and supply of walnuts, almonds peaches, these crops have an important contribution to the California’s agricultural economy. Damages from pests, mainly Codling moth (Cydia pomonella L.), Peach twig borer (Anarsia lineatella) Oriental fruit (Grapholita molesta), are still high, despite improvement pest management activities. Given that temperature increase can directly impact rate growth development it understand what extent dynamics pests will...
The native isolates of entomopathogenic fungi, Metarhizium anisopliae and Beauveria bassiana, were evaluated against the third instar larvae chickpea pod borer, Helicoverpa armigera, for mortality, infection rate LT50 under laboratory conditions in Nepal. Out four M. two B. bassiana evaluated, M1 B3, most virulent ones all with a concentration at 10^7 conidia/ml. B3 had highest mortality rates required shortest time to kill H. armigera. After treatment B1 10 days, larval exceeded 85%. These...