scholarly journals Overview: Risk Factors and Historic Levels of Pressure From Insect Pests of Seedling Corn, Cotton, Soybean, and Wheat in the United States

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Sharon K Papiernik ◽  
Thomas W Sappington ◽  
Randall G Luttrell ◽  
Louis S Hesler ◽  
K Clint Allen

Abstract The use of neonicotinoid insecticides in the United States has grown by about a factor of four since the mid-2000s. Seed treatments account for a significant fraction of overall insecticide application to crops, and a large proportion of major U.S. crops are now planted using seed treated with neonicotinoids. Neonicotinoid insecticidal seed treatments are primarily intended to protect crops against sporadic or minor early-season pests. A better understanding of factors that influence the risk of economic infestations and extent of crop damage by sporadic pests is needed to target neonicotinoid insecticidal seed treatments use based on expected pest pressure. In a series of papers, we review the distribution, ecology, and historical management of seed and seedling pests targeted by neonicotinoid seed treatments in U.S. corn (Zea mays), soybean (Glycine max), wheat (Triticum aestivum), and cotton (Gossypium hirsutum L.). This information is key to region-specific management practices that reduce the risks and increase the benefits of neonicotinoid seed treatments.

2019 ◽  
Vol 20 (4) ◽  
pp. e657-e705 ◽  
Author(s):  
Sandra Broszeit ◽  
Marie-Christine Laible ◽  
Holger Görg ◽  
Ursula Fritsch

AbstractBased on a novel dataset, the ‘German Management and Organizational Practices’ (GMOP) Survey, we calculate establishment-specific management scores following Bloom and van Reenen as indicators of management quality. We find substantial heterogeneity in management practices across establishments in Germany, with small establishments having lower scores than large establishments on average. We show a robust positive and economically important association between the management score and establishment level productivity in Germany. This association increases with establishment size. Comparison to a similar survey in the United States indicates that the average management score is lower in Germany than in the United States. Overall, our results point toward lower management quality being at least in part to blame for the differences in aggregate productivity between Germany and the United States.


2014 ◽  
Vol 143 (10) ◽  
pp. 2131-2136 ◽  
Author(s):  
K. PEDERSEN ◽  
K. L. PABILONIA ◽  
T. D. ANDERSON ◽  
S. N. BEVINS ◽  
C. R. HICKS ◽  
...  

SUMMARYAs feral swine continue to expand their geographical range and distribution across the United States, their involvement in crop damage, livestock predation, and pathogen transmission is likely to increase. Despite the relatively recent discovery of feral swine involvement in the aetiology of a variety of pathogens, their propensity to transmit and carry a wide variety of pathogens is disconcerting. We examined sera from 2055 feral swine for antibody presence to six serovars of Leptospira that can also infect humans, livestock or domestic animals. About 13% of all samples tested positive for at least one serovar, suggesting that Leptospira infection is common in feral swine. Further studies to identify the proportion of actively infected animals are needed to more fully understand the risk they pose.


Helia ◽  
2016 ◽  
Vol 39 (64) ◽  
pp. 45-56 ◽  
Author(s):  
J. R. Prasifka ◽  
L. F. Marek ◽  
D. K. Lee ◽  
S. B. Thapa ◽  
V. Hahn ◽  
...  

AbstractDelayed planting is recommended to reduce damage from sunflower insect pests in the United States, including the sunflower moth, Homoeosoma electellum (Hulst) and banded sunflower moth, Cochylis hospes Walsingham. However, in some locations, planting earlier or growing later-maturing hybrids could improve yield or oil content of sunflowers which would partially offset any added costs from insect pests or their management. Because the abundance and distribution of some sunflower insects have changed since recommendations for delayed planting were developed, experimental plots were grown in 2012 and 2013 at sites in North Dakota, Nebraska, Iowa, and Illinois. Sunflowers were planted two to four weeks earlier than normal, including hybrids that flower two to three weeks later than elite commercial hybrids. The sum of seed damaged by sunflower moth, banded sunflower moth, and red sunflower seed weevil, Smicronyx fulvus LeConte, (i. e., total percentage) was influenced by location, but not the relative maturity of tested entries. However, when damage attributed solely to the red sunflower seed weevil was analyzed, more damaged seed were found for late-maturing entries in North Dakota and Nebraska. In addition to the trial data, current pest populations are lower than when delayed planting was first recommended and insecticide use during sunflower bloom is both common and effective. Together, these observations suggest factoring insect pests into planting time decisions may be unnecessary, except for areas with a history of problems with severe pests that cannot be managed using insecticides (e. g., sunflower midge, Contarinia schulzi Gagné).


2022 ◽  
pp. 251484862110698
Author(s):  
David C. Eisenhauer

Recent work in urban geography and political ecology has explored the roots of housing segregation in the United States within governmental polices and racial prejudice within the real estate sector. Additional research has demonstrated how coastal management practices has largely benefited wealthy, white communities. In this paper, I bring together insights from these two strands of research to demonstrate how both coastal management and governmental housing policies combined to shape racial inequalities within and around Asbury Park, New Jersey. By focusing on the period between 1945 and 1970, I show how local, state, and federal actors repeatedly prioritized improving and protecting the beachfront areas of the northern New Jersey shore while promising to eventually address the housing and economic needs of the predominately Black ‘West Side’ neighbourhood of Asbury Park. This paper demonstrates that not only did governmental spending on coastal management largely benefit white suburban homeowners but also came at the expense of promised spending within Black neighbourhoods. The case study has implications for other coastal regions in the United States in which housing segregation persists. As climate change and sea level rise unfold, the history of racial discrimination in coastal development raises important considerations for efforts to address emerging hazards and risks.


Author(s):  
Natalie B. Milman ◽  
Angela Carlson-Bancroft ◽  
Amy E. Vanden Boogart

This chapter chronicles the planning and classroom management practices of the first-year implementation of a 1:1 iPad initiative in a suburban, co-educational, independent, PreK-4th grade elementary school in the United States that was examined through a mixed methods QUAL ? QUAN case study. Findings demonstrate that the school's administrators and teachers engaged in pre-planning activities prior to the implementation of the iPad initiative, teachers viewed the iPads as tools in the planning process (iPads were not perceived as the content or subject to be taught/learned), and teachers flexibly employed different classroom management techniques and rules as they learned to integrate iPads in their classrooms. Additionally, the findings reveal the need for continuous formal and informal professional development that offers teachers multiple and varied opportunities to share their planning and classroom management practices, build their confidence and expertise in effective integration of iPads, and learn with and from one another.


Author(s):  
Natalie B. Milman ◽  
Angela Carlson-Bancroft ◽  
Amy E. Vanden Boogart

This chapter chronicles the planning and classroom management practices of the first-year implementation of a 1:1 iPad initiative in a suburban, co-educational, independent, PreK-4th grade elementary school in the United States that was examined through a mixed methods QUAL ? QUAN case study. Findings demonstrate that the school's administrators and teachers engaged in pre-planning activities prior to the implementation of the iPad initiative, teachers viewed the iPads as tools in the planning process (iPads were not perceived as the content or subject to be taught/learned), and teachers flexibly employed different classroom management techniques and rules as they learned to integrate iPads in their classrooms. Additionally, the findings reveal the need for continuous formal and informal professional development that offers teachers multiple and varied opportunities to share their planning and classroom management practices, build their confidence and expertise in effective integration of iPads, and learn with and from one another.


Author(s):  
M. Aryana Bryan ◽  
Valerie Hruschak ◽  
Cory Dennis ◽  
Daniel Rosen ◽  
Gerald Cochran

Opioid-related deaths by overdoses quadrupled in the United States from the years 1999 to 2015. This rise in mortality predominately occurred in the wake of historic changes in pain management practices and aggressive marketing of opioid medications such as oxycontin. Prescription opioid misuse and subsequent addiction spilled over to heroin and fentanyl for many. This drug epidemic differed from others in its impact among non-Hispanic whites, leading to drastic changes in how the United States views addiction and chooses to respond. This article offers an overview of opioid use disorder (OUD), its treatment and its relationship with pain. It also discusses special populations affected and provides insight into future directions for research and social work practice surrounding opioid management in the United States. Because of the profession’s emphasis on the person and social environment as well as its focus on vulnerable and oppressed populations, social work plays a critical role in addressing the crisis.


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