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Summers, Charles G.

doi:10.1023/a:1009654901994

Cited by 62 publications

(8 citation statements)

References 165 publications

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“…Both instars, however, contribute to dramatic deceases in quality and quantity of the first alfalfa harvest in many regions (Radcliffe and Flanders, 1998) and sometimes lead to a complete loss of the harvest (Khanjani and Pourmirza, 2004). Larvae may further cause indirect damage by decreasing the digestible cell solute proteins of alfalfa and a higher amount of fibers that have lower value for feeding livestock (Summers, 1998).…”

Section: Introductionmentioning

confidence: 99%

Developmental differences of local populations of alfalfa weevil (Hypera postica) (Coleoptera: Curculionidae)

Sanaei¹,

Seiedy²

2016

Turk J Zool

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Many invasive insect pests show phenotypic variation between local populations across their geographical range. Understanding and integrating such differences will help to improve pest management. Population differences are the result of local adaptation to environmental conditions and may be detected using ecological analyses. Immature stages may represent especially interesting study objects as they represent important stages in the life cycle of insects and in many cases may be the most destructive stage. The alfalfa weevil, Hypera postica (Gyllenhal, 1813), is a variable worldwide pest that heavily damages alfalfa fields and is widely distributed in Iran. The lack of information about Iranian populations of H. postica has motivated us to examine immature life stages of three western populations (Karaj, Hamedan, Tuyserkan) and one eastern population (Jovein) under laboratory conditions. We measured the percentage of survival and the developmental times of each immature stage. The results suggested that the mean duration of the pupa stage significantly differs among the eastern population and all western populations (P < 0.005). Egg survivorship was lower in the eastern population (72.5%). The importance of differences in development times between populations is discussed in regards of pest management strategies.

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Section: Introductionmentioning

confidence: 99%

Developmental differences of local populations of alfalfa weevil (Hypera postica) (Coleoptera: Curculionidae)

Sanaei¹,

Seiedy²

2016

Turk J Zool

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“…Farmer decision-making has long been an area of interest to scientists to increase efficiency and provide useful scientific insight to assist growers. Recent research has paid growing attention to the need to integrate social and biological understandings of insect pests (Lamp et al, 1991;Summers, 1998). Such work has the benefit of being attentive to grower needs and practices, so that interventions may be designed in a way that incorporates realistic considerations and so that information is responsive to producer needs and interests.…”

Section: Introductionmentioning

confidence: 99%

The Promise of a Multi-Disciplinary, Mixed-Methods Approach to Inform Insect Pest Management: Evidence From Wyoming Alfalfa

Jabbour

Noy

2020

Front. Sustain. Food Syst.

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Pest management strategies involve a complex set of considerations, circumstances, and decision-making. Existing research suggests that farmers are reflexive and reflective in their management choices yet continue to employ curative rather than preventative strategies, and opt for chemical over biological solutions. In this piece, we detail work from a two-year, multidisciplinary, mixed-methods study of insect pest management strategies in alfalfa in Wyoming, integrating data from four focus groups, a statewide survey, and biological sampling of production fields. We outline how these different sources of data together contribute to a more complete understanding of the challenges and strategies employed by farmers, and specifically on biological pest control. We applied this approach across alfalfa hay and seed crop systems. Relatively few farmers acknowledged biological control in focus groups or surveys, yet biological exploration yielded abundant parasitism of common pest alfalfa weevil. On the other hand, parasitism of seed alfalfa pest Lygus was far less common and patchy across fields. It is only in integrating quantitative and qualitative, biological and social data that we are able to generate a more complete portrait of the challenges and opportunities of working with farmers to embrace a preventative paradigm. In doing so, we offer insights on possible barriers to the adoption of preventative insect management strategies and provide a case study of integrating social science and biophysical techniques to better understand opportunities to expand biological pest control in cropping systems.

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“…Required quality source of magnesium, calcium, phosphorus, vitamin D and for β-caratene has made it a perfect and complete diet for deprived people in the shape of sprouts (Tao et al 2017;Mao et al 2018). Besides, its versatility as a feed and food, alfalfa has the potential ability to improve soil structure like other legumes to fix the aerial nitrogen (Summers 1998). Being the oldest fodder crop, alfalfa is grown worldwide on variable soil under different climatic conditions and hence encounters varieties of field insects and danger pests (Erice et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Integrated pest supervision of most of the field pests including other biotic stresses and weeds in alfalfa crop is still a major acceptable strategy to overcome these yield problems in developing countries. Host plant interaction has also been studied intensively in this crop although it has a very complex inheritance of traits and show high inbreeding depression (Summers 1998). Meanwhile, variety of pesticides has been used for controlling field insect pests, which though have reduced the economic losses but affected the natural flora and fauna and have developed resistance in pests against crops.…”

Section: Introductionmentioning

confidence: 99%

Understanding the genetic mechanism of resistance in aphid-treated alfalfa (Medicago sativa L.) through proteomic analysis

Ullah

Zhang

2019

3 Biotech

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To minimize dependency on chemical pesticides, plant breeders are trying to emphasize on important agricultural pests for the development of pest resistant cultivars. However, the molecular approach and associated genetic tools conferring resistance have not been widely studied. In the current study, proteomic analysis of two of the alfalfa cultivars viz. a resistant (R) (Zhongmu-1) and a susceptible (S) (WL343), with (+ A) and without (− A) aphids rearing were carried out. Results indicated that 325 differentially expressed proteins (DEPs) up-regulated while 319 down-regulated with a pattern of R + A/R − A plants, whereas 371 up-and 583 down-regulated DEPs were identified in the S + A/S − A plants. Total number of DEPs found in (S + A/S -A) was around 19.7% greater than that of (R + A/R -A), whereas, the down-regulated DEPs of susceptible variety was 11.6% higher than the resistant cultivar. Applying the KEGG analysis, 96 and 142 DEPs were portrayed to 15 and 10 substantively augmented pathways for Zhongmu-1 and WL343, respectively. We also found that two of the shared pathways (carbon metabolism and pyruvate metabolism) are linking to important traits conferring resistance in alfalfa. Most importantly, the specific role of linoleic acid metabolism was found to be associated with jasmonic acid, flavonoid biosynthesis, and terpenoid backbone biosynthesis that might have been associated with the insect-resistant material synthesis in the resistant alfalfa cultivar. Our study suggested that both alfalfa cultivars (R, S) could govern protein expression through carbon and pyruvate metabolism. But only the resistant alfalfa cultivar (Zhongmu-1) can tune protein expression via linoleic acid metabolism and terpenoid backbone biosynthesis to induce the defensive protein expressions (e.g., jasmonic acid and flavonoid biosynthesis along with terpenoid backbone biosynthesis), to enhance plant defense capacity.

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Untitled

Cited by 62 publications

References 165 publications

Developmental differences of local populations of alfalfa weevil (Hypera postica) (Coleoptera: Curculionidae)

Developmental differences of local populations of alfalfa weevil (Hypera postica) (Coleoptera: Curculionidae)

The Promise of a Multi-Disciplinary, Mixed-Methods Approach to Inform Insect Pest Management: Evidence From Wyoming Alfalfa

Understanding the genetic mechanism of resistance in aphid-treated alfalfa (Medicago sativa L.) through proteomic analysis

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