Arthropods and biofuel production systems in North America

2010 ◽  
Vol 17 (3) ◽  
pp. 220-236 ◽  
Author(s):  
Douglas A. Landis ◽  
Benjamin P. Werling
Keyword(s):  
North America ◽  
Production Systems ◽  
Biofuel Production

scholarly journals A Modelling Framework for the Conceptual Design of Low-Emission Eco-Industrial Parks in the Circular Economy: A Case for Algae-Centered Business Consortia

Water ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 69
Author(s):  
Aldric S. Tumilar ◽  
Dia Milani ◽  
Zachary Cohn ◽  
Nick Florin ◽  
Ali Abbas
Keyword(s):  
Circular Economy ◽  
Carbon Capture ◽  
Fossil Fuel ◽  
Production Systems ◽  
Flow Analysis ◽  
Biofuel Production ◽  
Industrial Symbiosis ◽  
Modelling Framework ◽  
Low Emission ◽  
Energy Exchanges

This article describes a unique industrial symbiosis employing an algae cultivation unit (ACU) at the core of a novel eco-industrial park (EIP) integrating fossil-fuel fired power generation, carbon capture, biofuel production, aquaculture, and wastewater treatment. A new modelling framework capable of designing and evaluating materials and energy exchanges within an industrial eco-system is introduced. In this scalable model, an algorithm was developed to balance the material and energy exchanges and determine the optimal inputs and outputs based on the industrial symbiosis objectives and participating industries. Optimizing the functionality of the ACU not only achieved a substantial emission reduction, but also boosted aquaculture, biofuel, and other chemical productions. In a power-boosting scenario (PBS), by matching a 660 MW fossil fuel-fired power plant with an equivalent solar field in the presence of ACU, fish-producing aquaculture and biofuel industries, the net CO2 emissions were cut by 60% with the added benefit of producing 39 m3 biodiesel, 6.7 m3 bioethanol, 0.14 m3 methanol, and 19.55 tons of fish products annually. Significantly, this article shows the potential of this new flexible modelling framework for integrated materials and energy flow analysis. This integration is an important pathway for evaluating energy technology transitions towards future low-emission production systems, as required for a circular economy.

Invasive Cereal Aphids of North America: Ecology and Pest Management

2019 ◽  
Vol 64 (1) ◽  
pp. 73-93 ◽  
Author(s):  
Michael J. Brewer ◽  
Frank B. Peairs ◽  
Norman C. Elliott
Keyword(s):  
North America ◽  
Pest Management ◽  
Great Plains ◽  
Large Scale ◽  
Production Systems ◽  
Cereal Crops ◽  
Cereal Aphids ◽  
Sugarcane Aphid ◽  
Cereal Production ◽  
Abundance And Diversity

Aphid invasions of North American cereal crops generally have started with colonization of a new region or crop, followed by range expansion and outbreaks that vary in frequency and scale owing to geographically variable influences. To improve understanding of this process and management, we compare the invasion ecology of and management response to three cereal aphids: sugarcane aphid, Russian wheat aphid, and greenbug. The region exploited is determined primarily by climate and host plant availability. Once an area is permanently or annually colonized, outbreak intensity is also affected by natural enemies and managed inputs, such as aphid-resistant cultivars and insecticides. Over time, increases in natural enemy abundance and diversity, improved compatibility among management tactics, and limited threshold-based insecticide use have likely increased resilience of aphid regulation. Application of pest management foundational practices followed by a focus on compatible strategies are relevant worldwide. Area-wide pest management is most appropriate to large-scale cereal production systems, as exemplified in the Great Plains of North America.

scholarly journals Raw milk producers with high levels of hygiene and safety

2020 ◽  
Vol 148 ◽  
Author(s):  
A. C. Berge ◽  
T. Baars
Keyword(s):  
North America ◽  
Milk Production ◽  
Production Systems ◽  
Raw Milk ◽  
Indicator Bacteria ◽  
Management Approach ◽  
Natural Food ◽  
Local Agriculture ◽  
British Colombia ◽  
High Level

Abstract There is world-wide increasing interest in the consumption of unprocessed, natural food commodities including fresh (unpasteurised) milk and milk products. Consumers are actively seeking out raw milk, partly due to health reasons, but also for taste, freshness, closeness to the producer and to support local agriculture. The need for high levels of hygiene and safety in farms producing raw milk for direct consumption has long been recognised and has led to federal and industry-initiated systems for safe raw milk production. Raw milk producers in North America and Europe have demonstrated that raw milk, intended for direct consumption, can be produced safe and hygienic. The aim of this paper is to describe practices that have been developed for safe raw milk production. The German Vorzugsmilch is a federally regulated programme for legal raw milk production that was established already in the 1930s to provide raw milk with high hygienic standards controlled for zoonotic diseases to consumers. The Raw Milk Institute is a non-profit organisation established in California that has developed a voluntary safe raw milk programme in North America. RAWMI has developed a risk analysis and management system for raw milk dairy farmers to assist farmers in making individually tailored solutions for various production systems. In British Colombia, Canada, small herd share farms have employed good manufacturing practices, a risk management approach and performed monthly samples for pathogens and indicator bacteria to demonstrate safety and consistency. The major components of the raw milk systems applied, and the results of regular milk microbial indicator bacteria are presented. For the German system, the results from standard monthly pathogen tests are compared to zoonotic pathogen tests from other milk sources. The overall results indicate that raw milk can be produced with a high level of hygiene and safety in various systems.

Potato agronomy in a changing industry

1972 ◽  
Vol 7 (1) ◽  
pp. 3-9 ◽  
Author(s):  
R. K. Scott ◽  
A. Younger
Keyword(s):  
North America ◽  
Genetic Resources ◽  
Production Systems ◽  
Potato Production ◽  
Potato Culture ◽  
The World

The extension of potato culture from Peru to North America, Europe and the rest of the world has been accompanied by the development of a variety of production systems. With the intensification of potato production in many countries, the available genetic resources of the plant are being severely stretched. This may be why experimental departures from standard husbandry do not always give the advantages expected. Potato agronomy, nevertheless, is in the throes of change.

Residual Toxicity of Insecticides to Neoseiulus fallacis (Acari: Phytoseiidae) in Apples

2019 ◽  
Vol 112 (5) ◽  
pp. 2262-2267 ◽  
Author(s):  
Raja Zalinda Raja Jamil ◽  
Christine Vandervoort ◽  
John C Wise
Keyword(s):  
North America ◽  
Pest Management ◽  
Production Systems ◽  
Predatory Mite ◽  
Decision Makers ◽  
Neoseiulus Fallacis ◽  
Residual Toxicity ◽  
Lethal Time ◽  
Important Field ◽  
Apple Production

Abstract Neoseiulus fallacis (Garman) is a predatory mite that is common in apple orchards and distributed throughout North America. However, N. fallacis may be susceptible to pesticides used for the management of crop pests. This study aimed to evaluate the temporal effects of commonly used insecticides on N. fallacis survival. Neoseiulus fallacis adults were exposed to field-aged residues, and mortality and lethal time were measured over 96 h of exposure. Carbaryl caused high mortality to N. fallacis and the shortest lethal time values (LT50), followed by spinetoram, with moderate lethal time values. Esfenvalerate, acetamiprid, chlorantraniliprole, and novaluron showed little to no lethality to N. fallacis following exposure to dry field-aged residues. The results of this study provide important field-relevant knowledge that is often void from laboratory-based studies, which can aid integrated pest management (IPM) decision-makers in apple production systems.

scholarly journals Comparative analysis of key socio-economic and environmental impacts of smallholder and plantation based jatropha biofuel production systems in Tanzania

2014 ◽  
Vol 61 ◽  
pp. 25-45 ◽  
Author(s):  
Janske van Eijck ◽  
Henny Romijn ◽  
Edward Smeets ◽  
Rob Bailis ◽  
Martijn Rooijakkers ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Environmental Impacts ◽  
Production Systems ◽  
Biofuel Production

scholarly journals Placing microalgae on the biofuels priority list: a review of the technological challenges

2009 ◽  
Vol 7 (46) ◽  
pp. 703-726 ◽  
Author(s):  
H. C. Greenwell ◽  
L. M. L. Laurens ◽  
R. J. Shields ◽  
R. W. Lovitt ◽  
K. J. Flynn
Keyword(s):  
Large Scale ◽  
Production Systems ◽  
Growth Models ◽  
Arable Land ◽  
Biofuel Production ◽  
Algal Culture ◽  
Priority List ◽  
Photosynthetic Productivity ◽  
Algal Lipid ◽  
Microalgal Culture

Microalgae provide various potential advantages for biofuel production when compared with ‘traditional’ crops. Specifically, large-scale microalgal culture need not compete for arable land, while in theory their productivity is greater. In consequence, there has been resurgence in interest and a proliferation of algae fuel projects. However, while on a theoretical basis, microalgae may produce between 10- and 100-fold more oil per acre, such capacities have not been validated on a commercial scale. We critically review current designs of algal culture facilities, including photobioreactors and open ponds, with regards to photosynthetic productivity and associated biomass and oil production and include an analysis of alternative approaches using models, balancing space needs, productivity and biomass concentrations, together with nutrient requirements. In the light of the current interest in synthetic genomics and genetic modifications, we also evaluate the options for potential metabolic engineering of the lipid biosynthesis pathways of microalgae. We conclude that although significant literature exists on microalgal growth and biochemistry, significantly more work needs to be undertaken to understand and potentially manipulate algal lipid metabolism. Furthermore, with regards to chemical upgrading of algal lipids and biomass, we describe alternative fuel synthesis routes, and discuss and evaluate the application of catalysts traditionally used for plant oils. Simulations that incorporate financial elements, along with fluid dynamics and algae growth models, are likely to be increasingly useful for predicting reactor design efficiency and life cycle analysis to determine the viability of the various options for large-scale culture. The greatest potential for cost reduction and increased yields most probably lies within closed or hybrid closed–open production systems.

scholarly journals Torrefied biomass in biofuel production system

2020 ◽  
Vol 93 (8) ◽  
pp. 9-12
Author(s):  
D. Ciolkosz ◽  
Keyword(s):  
Supply Chain ◽  
Large Scale ◽  
Crop Residues ◽  
Production Systems ◽  
Animal Feed ◽  
Energy Content ◽  
Value Added ◽  
Power Production ◽  
Biofuel Production ◽  
Added Value

Ukraine produces large amounts of crop residues every year, much which could be utilized to produce biofuel. However, efficient supply chains and system configurations are needed to make such systems efficient and cost effective. One option is to integrate torrefaction, power production and biofuel production into a single, coordinated system. This approach allows for high value product (i.e. biofuel), greater utilization of the energy content of the feedstock, and supply chain efficiency. Initial analyses indicate that revenues can be enhanced through this approach, and further analyses and optimization efforts could identify a sustainable approach to renewable fuel and power production for Ukraine. The question of scale and layout remains of interest as well, and a thorough logistical study is needed to identify the most suitable configuration. Agricultural operations often benefit from smaller scales of operation, whereas fuel production processes tend to operate profitably only at very large scale. Thus, a balance must be struck between the needs of both ends of the supply chain. The processing center concept helps to balance those needs. A system such as this also has potential to synergize with other agricultural production systems, such as the production of animal feed, fertilizer, and other bio-based products. The complexities of the Ukrainian agricultural market will need to be reflected carefully in any model that seeks to assess the system's potential. Presents a concept for coupling thermal pretreatment (torrefaction with biofuel and power production for the transformation of wheat straw into a value added product for Ukraine. Torrefaction provides supply chain savings, while conversion provides added value to the product. This paradigm has potential to utilize a widely produced waste material into a valuable source of energy and possibly other products for the country.

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