Assessing the sustainability of a terraced agroecosystem for production of nopal vegetable (Opuntia ficus-indica) in metropolitan Mexico City

2001 ◽  
Vol 16 (3) ◽  
pp. 98-105 ◽  
Author(s):  
H. Losada ◽  
J. Vieyra ◽  
R. Soriano ◽  
R. Bennett ◽  
J. Cortés ◽  
...  
Keyword(s):  
Mexico City ◽  
Environmental Sustainability ◽  
Cropping System ◽  
Environmental Indicators ◽  
Net Income ◽  
Weed Species ◽  
Structured Interviews ◽  
Gross Margin ◽  
Economic Productivity ◽  
Trade Offs

AbstractA case study of the nopal-vegetable agroecosystem in metropolitan Mexico City was conducted to evaluate the crop's economic productivity and sustainability using economic, social, and environmental indicators. Economic indicators were based on a gross margin analysis, commercialization strategies, and provision of employment. Social indicators were education level, family size, origin of laborers, plot size providing a measure of equity, and social self-organization. Environmental indicators were soil nutrient content and fertilizer application, technological management, and crop and natural biodiversity. Information on relevant social, technological, and economic elements was obtained through structured interviews with 100 producers of the city's nopalproducing zone of Milpa Alta in the hills southeast of Mexico City. Analysis of soil samples from cropped fields at three different depths was conducted, along with a study of nopal-associated weed species used by the community. Net income per ha was equivalent to 4 minimum wages. Estimated scores of 89, 74, and 64 (on a scale of 0 to 100) were obtained for social, economic, and environmental sustainability indicators, respectfully, for this unique cropping system. Discussion focuses on trade-offs between indicators, the cost of achieving sustainability in the metropolitan zone of Mexico City, and appropriate policy responses.

scholarly journals Land Use Change from Rice to Maize Farming in Northern Region of Bangladesh: Identifying Causes and Future Prospects

2021 ◽  
pp. 71-84
Author(s):  
Shahana Khatun Bipasha ◽  
Mahmuda Nasrin ◽  
Md. Monirul Islam ◽  
Pooja Vortia ◽  
Farzana Yeasmin ◽  
...  
Keyword(s):  
Land Use ◽  
Environmental Sustainability ◽  
Cropping System ◽  
Northern Region ◽  
Gross Margin ◽  
Maize Production ◽  
Land Use Decisions ◽  
Maize Cultivation ◽  
Comprehensive Comparison ◽  
Home Consumption

Maize is gaining importance in recent years as a promising crop, but some constraints are intensifying with increased concern over input supply and soil-related environmental sustainability. So, we were interested to assess the financial profitability of maize production over the existing rice cropping system and factors responsible for changing land-use decisions in Northern Bangladesh. The comprehensive comparison revealed that maize farmers got higher returns than the farmers producing boro rice as the calculated BCR for the former (2.14) was higher than the later (1.29). The results of regression analysis showed that maize labor use, maize gross margin, availability of rice for home consumption, and the least rice-producing area had a significant effect on deciding to shift the land from rice to maize cultivation. Therefore, there was a great prospect of maize farming in the study area as a profitable enterprise.

scholarly journals Bed Planting – A New Crop Establishment Method for Wheat in Rice-Wheat Cropping System

1970 ◽  
pp. 23-31 ◽  
Author(s):  
MIU Mollah ◽  
MSU Bhuiya ◽  
MH Kabir
Keyword(s):  
Conventional Method ◽  
Cropping System ◽  
Wheat Crop ◽  
Cost Ratio ◽  
Gross Margin ◽  
Economic Productivity ◽  
Benefit Cost Ratio ◽  
Crop Establishment ◽  
The Cost ◽  
Benefit Cost

An experiment was conducted at the Bangladesh Rice Research Institute, Gazipur during Rabi season 2001-02 and 2002-03 to determine the effects of bed width, plant row number bed-1 and seed rate on the agro-economic productivity of wheat under bed planting in rice-wheat cropping system. Bed planting in 70, 80 and 90 cm wide beds with two and three plant rows bed-1 along with conventional method and 60, 90, 120 and 150 kg ha-1 seed rates were tested. Seventy-centimeter wide beds increased grain yield of wheat up to 21% over conventional method. It increased the number of panicles m-2, number of grains panicle-1 and 1000-grain weight of wheat. Sterility percentage was lower in bed than conventional method. Weed infestation was less in bed planting. It saved 41-48 % irrigation water. The cost of cultivation was lower and gross return, gross margin and benefit-cost ratio were higher in bed planting than conventional method. Key words: Bed planting, wheat, crop establishment. DOI: 10.3329/jard.v7i1.4418 J Agric Rural Dev 7(1&2), 23-31, June 2009

scholarly journals Network governance forms in healthcare: empirical evidence from two Italian cancer networks

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Anna Romiti ◽  
Mario Del Vecchio ◽  
Gino Sartor
Keyword(s):  
Healthcare System ◽  
Governance Structure ◽  
Network Governance ◽  
Public Healthcare ◽  
Structured Interviews ◽  
General Validity ◽  
Regional Administration ◽  
Trade Offs ◽  
Italian Regions ◽  
Cancer Networks

Abstract Background This study focuses on the application of Provan and Kenis’ modes of network governance to the specific field of public healthcare networks, extending the framework to an analysis of systems in which networks are involved. Thus, the aim of this study is to analyze and compare the governance of two cancer networks in two Italian regions that underwent system reconfiguration processes due to reforms in the healthcare system. Methods A qualitative study of two clinical networks in the Italian healthcare system was conducted. The sample for interviews included representatives of the regional administration (n = 4), network coordinators (n = 6), and general and clinical directors of health organizations involved in the two networks (n = 25). Data were collected using semi-structured interviews. Results Our study shows that healthcare system reforms have a limited impact on network governance structures. In fact, strong inertial tendencies characterize networks, especially network administrative organization models (NAO). Networks tend to find their own balance with respect to the trade-offs analyzed using a mix of formal and informal ties. Our study confirms the general validity of Provan and Kenis’ framework and shows how other specific factors and contingencies may affect the possibility that cancer networks find positive equilibria between competing needs of inclusivity and efficiency, internal and external legitimacy, and stability and flexibility. It also shows how networks react to external changes. Conclusions Our study shows the importance of considering three factors and contingencies that may affect network effectiveness: a) the importance of looking at network governance modes not in isolation, but in relationship to the governance of regional systems; b) the influence of a specific network’s governance structure on the network’s ability to respond to tensions and to achieve its goals; and c) the need to take into account the role of professionals in network governance.

scholarly journals Weeds Hosting the Soybean Cyst Nematode (Heterodera glycines Ichinohe): Management Implications in Agroecological Systems

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 146
Author(s):  
Leonardo F. Rocha ◽  
Karla L. Gage ◽  
Mirian F. Pimentel ◽  
Jason P. Bond ◽  
Ahmad M. Fakhoury
Keyword(s):  
Weed Management ◽  
Soybean Cyst Nematode ◽  
Heterodera Glycines ◽  
Integrated Management ◽  
Cropping System ◽  
Cyst Nematode ◽  
Weed Species ◽  
Initial Inoculum ◽  
Herbicide Resistant ◽  
Sites Of Action

The soybean cyst nematode (SCN; Heterodera glycines Ichinohe) is a major soybean-yield-limiting soil-borne pathogen, especially in the Midwestern US. Weed management is recommended for SCN integrated management, since some weed species have been reported to be hosts for SCN. The increase in the occurrence of resistance to herbicides complicates weed management and may further direct ecological–evolutionary (eco–evo) feedbacks in plant–pathogen complexes, including interactions between host plants and SCN. In this review, we summarize weed species reported to be hosts of SCN in the US and outline potential weed–SCN management interactions. Plants from 23 families have been reported to host SCN, with Fabaceae including most host species. Out of 116 weeds hosts, 14 species have known herbicide-resistant biotypes to 8 herbicide sites of action. Factors influencing the ability of weeds to host SCN are environmental and edaphic conditions, SCN initial inoculum, weed population levels, and variations in susceptibility of weed biotypes to SCN within a population. The association of SCN on weeds with relatively little fitness cost incurred by the latter may decrease the competitive ability of the crop and increase weed reproduction when SCN is present, feeding back into the probability of selecting for herbicide-resistant weed biotypes. Therefore, proper management of weed hosts of SCN should be a focus of integrated pest management (IPM) strategies to prevent further eco–evo feedbacks in the cropping system.

scholarly journals An integrated life cycle and water footprint assessment of nonfood crops based bioenergy production

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jun Li ◽  
Fengyin Xiong ◽  
Zhuo Chen
Keyword(s):  
Life Cycle ◽  
Environmental Sustainability ◽  
Large Scale ◽  
Water Footprint ◽  
Arable Land ◽  
Integrated Analysis ◽  
Actual Performance ◽  
Bioenergy Production ◽  
Trade Offs ◽  
Hybrid Pennisetum

AbstractBiomass gasification, especially distribution to power generation, is considered as a promising way to tackle global energy and environmental challenges. However, previous researches on integrated analysis of the greenhouse gases (GHG) abatement potentials associated with biomass electrification are sparse and few have taken the freshwater utilization into account within a coherent framework, though both energy and water scarcity are lying in the central concerns in China’s environmental policy. This study employs a Life cycle assessment (LCA) model to analyse the actual performance combined with water footprint (WF) assessment methods. The inextricable trade-offs between three representative energy-producing technologies are explored based on three categories of non-food crops (maize, sorghum and hybrid pennisetum) cultivated in marginal arable land. WF results demonstrate that the Hybrid pennisetum system has the largest impact on the water resources whereas the other two technology options exhibit the characteristics of environmental sustainability. The large variances in contribution ratio between the four sub-processes in terms of total impacts are reflected by the LCA results. The Anaerobic Digestion process is found to be the main contributor whereas the Digestate management process is shown to be able to effectively mitigate the negative environmental impacts with an absolute share. Sensitivity analysis is implemented to detect the impacts of loss ratios variation, as silage mass and methane, on final results. The methane loss has the largest influence on the Hybrid pennisetum system, followed by the Maize system. Above all, the Sorghum system demonstrates the best performance amongst the considered assessment categories. Our study builds a pilot reference for further driving large-scale project of bioenergy production and conversion. The synergy of combined WF-LCA method allows us to conduct a comprehensive assessment and to provide insights into environmental and resource management.

scholarly journals Effects of conservation agriculture on productivity and Economics of maize-wheat based cropping systems in midwestern Nepal

2019 ◽  
Vol 17 (1) ◽  
pp. 49-63
Author(s):  
K Pariyar ◽  
A Chaudhary ◽  
P Sapkota ◽  
S Sharma ◽  
CB Rana ◽  
...  
Keyword(s):  
Grain Yield ◽  
Cropping Systems ◽  
Cropping System ◽  
Conservation Agriculture ◽  
Crop Productivity ◽  
Conventional Tillage ◽  
Net Income ◽  
Zero Tillage ◽  
Higher Plant ◽  
Equivalent Yield

The effects of two tillage methods (zero tillage and conventional tillage), two residue managements (residue kept and residue removed) and two levels of cropping system (maize + soybean and sole maize) were studied over 3 years (2015-2017) at Dailekh district of Nepal. Arun-2 and Puja were the varieties of maize and soybean used respectively, followed by winter wheat. The results revealed that the maize + soybean system had significantly higher plant population and ear population (34.83 thousands ha-1 and 34.35 thousands ha-1, respectively), grains per row (37.1), ear length (16.6 cm) and 20.5% higher grain yield as compared to sole maize. The highest maize equivalent yield (7.92 t ha-1) was recorded in maize + soybean as compared to the lower grain yield equivalent (7.06 t ha-1) in sole maize. Zero tillage accounted relatively higher benefits (high net income and B:C ratio) as compared to conventional tillage. The residue kept plot resulted significantly higher B:C ratio (2.41) than the residue removed (2.11) and the maize + soybean recorded 82.5% greater B:C ratio compared to sole maize. Net annual income was significantly higher in zero tillage, residue kept and maize + soybean system (NRs. 223072.00, 222958.00 and 269016.00 ha-1 respectively). Such combinations are recommended for Dailekh district of Nepal to have profitable crop productivity. SAARC J. Agri., 17(1): 49-63 (2019)

scholarly journals Civic Education for Sustainable Development

2015 ◽  
Vol 4 (1) ◽  
pp. 5-22
Author(s):  
Bernhard Ohlmeier
Keyword(s):  
Sustainable Development ◽  
Civic Education ◽  
Environmental Sustainability ◽  
Good Governance ◽  
Education For Sustainable Development ◽  
Sustainable Growth ◽  
Education For Sustainability ◽  
German Development ◽  
Political Dimension ◽  
Economic Productivity

Abstract Education for sustainable development (ESD) often fails to consider the political dimension. To address this gap, this paper focuses on a specific political approach to ESD. The model presented is derived from the four sustainable growth targets of German Development Policy. Instead of relying on a neo-classical or neo-liberal economic paradigm, however, the goals of social justice, environmental sustainability, economic productivity and good governance are interpreted using a sustainability model. This model is anchored in a steady-state economy that has overcome the myth of unlimited material growth and seeks to stay within the limits of the planet's resources. The preconditions of good governance are outlined, and it is described how the state and civil society can contribute to this normative goal. In addition to social, ecological, economic and political components, the presented model for civic education for sustainability considers conflicts between different development components and the need for horizontal and vertical coherence. In conclusion, the paper shows that civic education for sustainability must aim to produce informed and empowered global citizens. Citizens should have the ability to employ their knowledge and skills responsibly through local and global civic involvement while also remaining aware of their own interests. Furthermore, it falls to educational policy makers to create national as well as international organisational structures that facilitate civic ESD.

HOW TO TRANSFORM AGRICULTURE UNDER THE CHALLENGES OF GLOBAL WARMING: A REVIEW OF KEY DEVELOPMENT AND TRADE ISSUES

2013 ◽  
Vol 04 (03) ◽  
pp. 1350013
Author(s):  
ULRICH HOFFMANN
Keyword(s):  
Global Warming ◽  
Environmental Sustainability ◽  
Gender Inequity ◽  
Production Methods ◽  
Mitigation And Adaptation ◽  
Health And Nutrition ◽  
Trade Offs ◽  
Development Approach ◽  
And Gender ◽  
Made In

The problems of climate change, hunger and poverty, economic, social and gender inequity, poor health and nutrition, and environmental sustainability are inter-related and need to be solved by leveraging agriculture's multi-functionality. Against this background, this paper analyzes various aspects of the fundamental transformation of agricultural production methods and systems required for dealing with the serious challenges that arise from global warming. It also discusses the trade-offs to be made in enhancing the mitigation and adaptation potential of agriculture as part and parcel of a pro-poor development approach in agriculture, which will also have to include a modification of international trade rules.

scholarly journals Potential for clean yam minisett production by resource-poor farmers in the middle-belt of Nigeria

2009 ◽  
Vol 147 (5) ◽  
pp. 589-600 ◽  
Author(s):  
S. MORSE ◽  
N. McNAMARA ◽  
M. ACHOLO
Keyword(s):  
Cropping System ◽  
Economic Viability ◽  
Treatment Results ◽  
Care Needs ◽  
Gross Margin ◽  
Dioscorea Rotundata ◽  
Planting Material ◽  
White Yam ◽  
Household Labour ◽  
River Niger

SUMMARYYam minisett technique (YMT) has been promoted throughout West Africa since the 1980s as a sustainable means of producing clean yam planting material, but adoption of the technique is often reported as being patchy at best. While there has been much research on the factors that influence adoption of the technique, there have been no attempts to assess its economic viability under ‘farmer-managed’ as distinct from ‘on station’ conditions. The present paper describes the results of farmer-managed trials employing the YMT (white yam: Dioscorea rotundata) at two villages in Igalaland, Kogi State, Nigeria. One of the villages (Edeke) is on the banks of the River Niger and represents a specialist yam environment, whereas the other village (Ekwuloko) is inland, where farmers employ a more general cropping system. Four farmers were selected in each of the two villages and asked to plant a trial comprising two varieties of yam, their popular local variety as well as another variety grown in other parts of Igalaland, and to treat yam setts (80–100 g) with either woodash or insecticide/nematicide+fungicide mix (chemical treatment). Results suggest that while chemical sett treatment increased yield and hence gross margin compared with woodash, if household labour is costed then YMT is not economically viable. However, the specialist yam growers of Edeke were far more positive about the use of YMT as they tended to keep the yam seed tubers for planting rather than sell them. Thus, great care needs to be taken with planning adoption surveys on the assumption that all farmers should adopt a technology.

scholarly journals Green business models in the construction sector: an analysis of outcomes and benefits

2018 ◽  
Vol 18 (1) ◽  
pp. 20-42 ◽  
Author(s):  
Amal Abuzeinab ◽  
Mohammed Arif ◽  
Mohd. Asim Qadri ◽  
Dennis Kulonda
Keyword(s):  
Environmental Sustainability ◽  
Business Models ◽  
Dominant Role ◽  
Business Case ◽  
Essential Elements ◽  
Construction Sector ◽  
Structured Interviews ◽  
Content Type ◽  
Green Business ◽  
The Uk

Purpose Green business models (GBMs) in the construction sector represent the logic of green value creation and capture. Hence, the call to examine GBMs is growing ever louder. The aim of this paper is to identify benefits of GBMs by adopting five essential elements of the GBM from the literature: green value proposition; target group; key activities; key resources (KR); and financial logic. Design/methodology/approach In all, 19 semi-structured interviews are conducted with construction sector practitioners and academics in the UK. Thematic analysis is used to obtain benefits of GBMs. Further, the interpretive ranking process (IRP) is used to examine which elements of the GBM have a dominant role in providing benefits to construction businesses. Findings The benefits are grouped into three themes: credibility/reputation benefits; financial benefits; and long-term viability benefits. The IRP model shows that the element of KR is the most important when evaluated against these three benefit themes. Practical implications Linking GBM elements and benefits will help companies in the construction sector to analyse the business case of embracing environmental sustainability. Originality/value This research is one of the few empirical academic works investigating the benefits of GBMs in the construction sector. The IRP method is a novel contribution to GBMs and construction research.

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