Technical Advice Research Articles

Farmers Experiencing Potato Seed Degeneration Respond but Do Not Adjust Their Seed Replacement Strategies in Ecuador

In Ecuador, farmers poorly adopt practices to manage potato seed degeneration. This could be related to the deficient understanding of the farmers’ capacity to experience seed degeneration and respond to it. We contribute to this understanding by answering: How do farmers experience seed degeneration?; What practices do farmers implement when their seed is degenerated?; and Is experiencing degeneration the pivotal factor determining how farmers replace their seed regardless their income? We analysed data collected in Ecuador through farmers’ focus group discussions, farmers’ surveys and interviews, and the Ecuadorian employment status survey. We found that approximately half of the farmers experienced degeneration. Farmers experienced it through low yields, change in seed appearance, crop weakening, and seed physiological problems. When farmers experienced degeneration, they replaced their seed, sought for technical advice, applied more agricultural inputs, or grew other crops. Income was an important trigger for farmers to change their seed replacement practices.

MICROFINANCE INSTITUTIONS ACTIVITIES AND MICROENTERPRISES DEVELOPMENT IN SOUTHWEST, NIGERIA

The development of micro scale business in a developing economy cannot be overstated due to the economic contribution and nature of the business. One of the challenges of micro businesses identified by scholars in developing economy like Nigeria is accessibility of funds which microfinance institutions have been saddled with that responsibility. Thus, there is need to see how the microfinance institutions are lifting to expectation. Therefore, the study investigated how the microfinance institutions activities has impacted on the micro business development in selected Southwest States in Nigeria. The study employed descriptive research design with stratified sampling technique. Primary data was collected via questionnaire and 384 copies of questionnaire were administered but 297 were returned and useful for the analysis. The findings using regression analysis revealed that financial service of microfinance institutions has positive but insignificant effect on microenterprises development. Non-financial service of microfinance institutions has a positive and significant effect on microenterprises development in Southwest Nigeria. It is concluded that non-financial service influenced microenterprises development in the study. It was recommended that microfinance institutions in Southwest Nigeria should continue to offer non-financial services in terms of organizing training programs, give support to expand business, offer technical advice and give competent advice to the operators of micro scale enterprises Microfinance banks should lessen the conditions associated with their financial services to the operators of micro enterprises so that these operators may be able to access micro credit.

Development of a new Human-Elephant Coexistence Toolbox for communities living with African savannah elephants (Loxodonta Africana)

This field note is to invite our colleagues to peer review and test a new illustrated Human-Elephant Coexistence (HEC) Toolbox that is being developed in Kenya by Save the Elephants (STE) under the organizations’ mission to secure a future for elephants and to develop a tolerant relationship between humans and elephants. Through presenting the first edition here (Fig. 1), we are inviting our elephant colleagues and community leaders from across the African savannah elephant range States to provide feedback, or any corrections, on the tools, as well as sharing content for additional methods not yet represented. By publishing our process and methods for how we are compiling this encyclopaedia of HEC tools and this novel approach to the peer review process, we hope to provide a transparent process to gauging the validity of the methods presented. This is particularly important because some of the technical advice around the conflict reduction tools presented are not published formally in the scientific literature.

Long-Term Culture and Monitoring of Isolated Caenorhabditis elegans on Solid Media in Multi-Well Devices.

The nematode Caenorhabditis elegans is among the most common model systems used in aging research owing to its simple and inexpensive culture techniques, rapid reproduction cycle (~3 days), short lifespan (~3 weeks), and numerous available tools for genetic manipulation and molecular analysis. The most common approach for conducting aging studies in C. elegans, including survival analysis, involves culturing populations of tens to hundreds of animals together on solid nematode growth media (NGM) in Petri plates. While this approach gathers data on a population of animals, most protocols do not track individual animals over time. Presented here is an optimized protocol for the long-term culturing of individual animals on microfabricated polydimethylsiloxane (PDMS) devices called WorMotels. Each device allows up to 240 animals to be cultured in small wells containing NGM, with each well isolated by a copper sulfate-containing moat that prevents the animals from fleeing. Building on the original WorMotel description, this paper provides a detailed protocol for molding, preparing, and populating each device, with descriptions of common technical complications and advice for troubleshooting. Within this protocol are techniques for the consistent loading of small-volume NGM, the consistent drying of both the NGM and bacterial food, options for delivering pharmacological interventions, instructions for and practical limitations to reusing PDMS devices, and tips for minimizing desiccation, even in low-humidity environments. This technique allows the longitudinal monitoring of various physiological parameters, including stimulated activity, unstimulated activity, body size, movement geometry, healthspan, and survival, in an environment similar to the standard technique for group culture on solid media in Petri plates. This method is compatible with high-throughput data collection when used in conjunction with automated microscopy and analysis software. Finally, the limitations of this technique are discussed, as well as a comparison of this approach to a recently developed method that uses microtrays to culture isolated nematodes on solid media.

The rise of the Euroclass: Inside the black box of fire test standardisation

This paper charts the initiation, development, and finalisation of Europe's harmonised system for reaction-to-fire classification. Technical literature, archival material, and original interviews are drawn upon to document and explain the process by which this system was created. It is shown that early attempts to retain existing national fire test methods were abandoned, but that from these existing tests grew a novel (but not wholly new) system. We document and detail how and why key thresholds and test parameters were agreed. We show how a relatively small number of civil servants and their technical advisors were empowered to create this system and how, once they had completed their task, they were promptly disempowered. The result of this process of harmonisation was that new agreements were forged; these agreements were embodied in standards, and embedded in each nation's building regulations. Our account shows not only that ideological, national, and business interests competed to influence this ‘Euroclass’ process, but also that the creation of useable standards necessarily distilled complex judgements into a simplified standard, with the reasoning behind the choices then becoming opaque to users.

Cage egg producers' perspectives on the adoption of cage-free systems in China, Japan, Indonesia, Malaysia, Philippines, and Thailand.

Asia is responsible for ~60% of global egg production. As in most of the world, nearly all of the egg-laying hens are housed in cages. While there is growing demand for cage-free eggs in many regions of the world, challenges have been reported when transitioning to these systems, which may affect the willingness of producers to transition. The aim of this research was to investigate the views of Asian egg producers on the feasibility of cage-free systems and what they perceive to be the main challenges and proposed solutions in adopting cage-free systems. A total of 224 egg producers (165 cage egg producers) completed questionnaires containing a mix of free-form, Likert scale and demographic items. Data were analyzed using thematic qualitative analysis and descriptive quantitative statistics. Responses indicated that cages are primarily used for their efficiency and ease of management. The most common reasons to consider adopting cage-free systems included improved animal welfare, increased market access, and increased product quality. A majority of producers (65%) responded "yes" or "maybe" when asked if they consider cage-free systems to be feasible in their country. Perceived challenges in adopting cage-free systems included reduced profitability, higher costs, and biosecurity and disease. Potential solutions included the development of the cage-free industry and market development. Most producers (72%) said more support is needed to establish cage-free farms, mostly pertaining to technical advice, training and resources. The findings of this study provide an enhanced understanding of the egg industry in these countries and potential areas for producer support in transitioning to cage-free systems.

Adaptation of Essential Care for Every Baby educational program to improve infant outcomes in the context of Zika

BackgroundThe outbreak and ongoing transmission of Zika virus provided an opportunity to strengthen essential newborn care and early childhood development systems through collaboration with the US Agency for International Development Applying Science to Strengthen and Improve Systems (USAID ASSIST). The objective was to create a system of sustainable training dissemination which improves newborn care-related quality indicators in the context of Zika.MethodsFrom 2018–19, USAID ASSIST supported a series of technical assistance visits by the American Academy of Pediatrics (AAP) in four Caribbean countries to strengthen the clinical capacity in care of children potentially affected by Zika through dissemination of Essential Care for Every Baby (ECEB), teaching QI methodology, coaching visits, and development of clinical care guidelines. ECEB was adapted to emphasize physical exam findings related to Zika. The first series of workshops were facilitated by AAP technical advisors and the second series were facilitated by the newly trained local champions. Quality of care was monitored with performance indicators at 134 health facilities.ResultsA repeated measures (pre-post) ANOVA was conducted, revealing significant pre-post knowledge gains [F(1) = 197.9, p < 0.001] on knowledge check scores. Certain performance indicators related to ECEB practices demonstrated significant changes and midline shift on the run chart in four countries.ConclusionECEB can be adapted to incorporate important local practices, causes of neonatal morbidity and mortality, and differing healthcare system structures, which, as one part of a larger technical assistance package, leads to improved performance of health systems.

Why do Farmers in Nyaruguru District Adopt Organic Coffee Production Methods?

Purpose: Nyaruguru is the most southerly district in Rwanda, lying between the cities of Butare and Cyangugu and along the Burundian border. It is mountainous, containing part of the montane forest of Nyungwe, one of Rwanda's most popular tourist destinations. Innovation and adoption of new technologies in agriculture is one of the keys that should reduce poverty in that area. The aim of this study is to analyse the factors influencing farmer’s adoption of organic coffee production practices in Rwanda. Methodology: This study employed a cross-sectional survey design and a multi-stage sampling technique to select a sample for this study. However, a total sample size of 150 respondents was used. The functional form of the stochastic frontier production (or cost) model employed for this study is the Cobb-Douglas (C-D) functional form. In the analysis, descriptive statistics and a Tobit model were used with the help of STATA. Findings: The study found out that appropriate seeds and planting material is one of the most important factors in production. The findings of logit regression analysis also indicated that four factors such as education level, land size, farming experience, gender and enhanced soil fertility had positive and significant influence on adoption of organic coffee production practices. The demand for organic products creates new export opportunities. The market returns from organic agriculture can potentially contribute to local food security by increasing family incomes. Conclusion: The study conclude that the most common constraints to adoption of organic coffee production practices were lack stable and reliable market, high cost of inputs, lack of extension services, and inadequate capital. Recommendations: The study recommended that efforts aiming at promoting organic coffee production practices among smallholder’s farmers should focus on enhancement of farmer-awareness, provision of training and technical advice on organic farming practices. This can be achieved through agricultural extension services and developing information networks among farmers. Also, the government should strive to improve extension services through field visit and strive to stabilize coffee markets.

Physical therapists and public perceptions of telerehabilitation: An online open survey on acceptability, preferences, and needs

BackgroundDuring the COVID-19 pandemic, telerehabilitation allowed the continuation of physical therapy care in parallel with public health measures to prevent the virus spread. However, in low- and middle-income countries including Brazil, telerehabilitation was unfamiliar to most of the population. ObjectiveTo investigate acceptability, preferences, and needs in telerehabilitation by Brazilian physical therapists and the general population. MethodsWe conducted an observational cross-sectional study with an online survey consisting of 13 multiple-choice items. Items were distributed among acceptability, preferences, and needs sections, and encompassed confidence in delivering or receiving telerehabilitation, its perceived efficacy and costs, and suitable content. ResultsA total of 1107 responses were registered, 717 from physical therapists. Half of them self-reported confidence in conducting telerehabilitation through the internet (synchronous or asynchronous). The same proportion disagreed that telerehabilitation is as effective as in-person interventions. Physical therapists agreed telerehabilitation should contain educational, self-management strategies, and exercises information, but the general population endorsed the provision of technical advice on exercise execution. The general population mostly reported that telerehabilitation could help their specific health condition (86%), but only 14% of respondents would pay the same as they pay for in-person consultations. Participants reported an overall preference for synchronous communication and concern about the lack of a hands-on approach. ConclusionPhysical therapists and the general population appear to demonstrate apprehension towards telerehabilitation. Insufficient preparation or inadequate knowledge might influence participants’ acceptance, preferences, and needs.

It Takes Two: The Importance of the Coach-Athlete Relationship

Have you wondered why coaches are often the first people athletes turn to, both when they are performing poorly and when they are winning? It is because the coach-athlete relationship is the most important relationship developed in sport. Athletes spend more time with their coaches than with any other people in their lives generally. They look up to their coaches and rely on them for technical, tactical, and personal advice. Gold medal-winning Olympic athletes like Wayde van Niekerk, Simone Biles, Michael Phelps, Laura Muir, and LeBron James have said that their coaches are the reason for their success. In this article, we will discuss what makes a successful coach-athlete relationship, describe the impact of the coach-athlete relationship on an athlete’s success, and provide tips that you and your coaches can use to develop a good working partnership.

Installing Flower Strips to Promote Pollinators in Simplified Agricultural Landscapes: Comprehensive Viability Assessment in Sunflower Fields

The installation of flower strips in simplified agricultural landscapes has been promoted as a tool to improve pollination services. While the effectiveness of flower strips in increasing pollinator visitation and yield is well-established, the social and economic feasibility of this measure remains unclear. Here, we evaluated the economic efficiency and social feasibility of installing flower strips to promote pollination under different scenarios of subsidy. A 2-year experiment was implemented by comparing sunflower fields with and without installed flower strips in central Spain, along with local farmer opinions obtained via a focus group. Flower strips significantly increased wild bee visitation to sunflower heads in the second year after implementation, with seed set being 11% higher on average in fields that had flower strips. Cost–benefit analysis revealed that investment in flower strips would be recovered by 4–5 years after installation, depending on the subsidy used. In the most favorable subsidy scenario, farmers could increase their annual benefits by 8.7% (29 €/ha) after recovering the initial investment. However, most local farmers did not perceive a significant increase in yield associated with the flower strip installation. The use of flower strips was negatively identified by farmers as a source of invasive weeds in adjacent fields, along with a lack of technical advice and economic incentives. Farmers fully agreed that direct economic subsidies were required for flower strips to be accepted as feasible approaches in the long-term.

Infusing educational technologies in the heart of the university—A systematic literature review from an organisational perspective

AbstractEducational technologies have experienced unprecedented prominence on university agendas with many institutions motivated to keep the lessons learned from the COVID‐19 sparked transition with regard to online teaching. In response to this renewed interest in ensuring the longevity of educational technologies in higher education, this systematic review analysed the various organisational factors—for example, leadership, infrastructure, strategy—considered essential in the literature for the successful implementation of educational technologies. Specifically, we reviewed 1614 papers published in five prominent educational technology journals in the last decade. From this sample, we identified 47 papers that discussed organisational factors. Drawing on these studies, we constructed an organisational framework, which outlines the different organisational factors, actors and processes involved in implementing educational technologies. The identified organisational factors are structured into three main categories: (1) Leadership and Strategy, (2) Infrastructure and Resources and (3) Recognition and Motivation. Our aim was to further the scholarly understanding of the organisational layer involved in digital change as well as provide concrete recommendations for practitioners. Practitioner notesWhat is already known about this topic Previous research has stressed the importance of taking organisational factors such as infrastructure, leadership, strategy and staff commitment into account when implementing educational technologies. However, review papers have failed to systematically organise these studies to create a comprehensive understanding of the organisational factors involved in implementing educational technologies and ensuring their longevity at an institution. There is currently a high level of interest in how educational technologies can be implemented in the higher education landscape, as many institutions are facing the question of what lessons they can learn from the crisis and how they can continue on their path of digitalisation. What this paper adds This review paper addresses a gap in our scholarly understanding of the organisational layers involved in the implementation of educational technologies in higher education institutions (HEIs). This paper provides a framework on organisational factors, which influence the implementation of educational technologies in HEIs. This review paper demonstrates that bottom‐up and opinion leadership, support structures tailored to the need and time of faculty as well as recognition and incentives have the largest impact on a sustainable implementation of educational technologies in HEIs. Implications for practice and/or policy Universities should create structures that enable innovation and creativity by promoting bottom‐up and opinion leadership as well as shared decision‐making processes as they are important for the successful implementation of educational technologies in HEIs. Besides providing a reliable and suitable infrastructure, institutional support and resources in terms of technical advice and training tailored to specific needs, should be in place when planning the implementation of educational technologies in HEIs. The additional workload instructors face when implementing digital teaching should be recognised and incentivised as it strengthens instructor engagement which is crucial for the implementation of educational technologies in HEIs.

Evaluating the impacts of foreign aid on low-income countries in Sub-Saharan Africa

Foreign aid comprises of a provision of financial resources or commodities such as food parcels or technical advice and training. The most prevalent type of foreign aid, particularly in developing countries, is Official Development Assistance (ODA) that strives to promote development and combat poverty. In Sub-Saharan Africa, there is a significant dependency on foreign aid which prompts the question; Is foreign aid completely necessary in developing African countries? With a high reliance on foreign aid the focus tends to shift from developing into self-sufficient economies and combating poverty to being dependent states. The paper explores the impact of foreign aid on the development in Sub-Saharan Africa. Because low-income countries are significantly reliant on aid, the study took a qualitative approach using the case study method featuring case studies from Kenya, Togo, and Zimbabwe. From the literature of the study, it is evident that the three countries had become dependent on foreign Aid. Conclusions drawn from the study show that foreign has become a recipe for dependency syndrome. Based on the findings from the literature, there is a need for private investments.

2021 AMCA Presidential Address.

2021 AMCA Presidential Address.

Analysis of low resource setting referral pathways to improve coordination and evidence-based services for maternal and child health in Ethiopia.

In low-resource settings, patient referral to a hospital is an essential part of the primary health care system. However, there is a paucity of study to explore the challenges and quality of referral coordination and communication. The purpose of this research was to analyze the existing paper-based referral registration logbook for maternal and child health in general and women of reproductive age in particular, to improve referral coordination and evidence-based services in Low-Resource Settings. This study analyzed the existing paper-based referral registration logbook (RRL) and card-sheet to explore the documentation of the referral management process, and the mechanism and quality of referrals between the health center (Jimma Health Center-case, Ethiopia) and the Hospital. A sample of 459 paper-based records from the referral registration logbook were digitized as part of a retrospective observational study. For data preprocessing, visualization, and analysis, we developed a python-based interactive referral clinical pathway tool. The data collection was conducted from August to October 2019. Jimma Health Center's RRL was used to examine how the referral decision was made and what cases were referred to the next level of care. However, the RRL was incomplete and did not contain the expected referral feedback from the hospital. Hence, we defined a new protocol to investigate the quality of referral. We compared the information in the health center's RRL with the medical records in the hospital to which the patients were referred. A total of 201 medical records of referred patients were examined. A total of 459 and 201 RRL records from the health center and the referred hospital, respectively, were analyzed in the study. Out of 459, 86.5% referred cases were between the age of 20 to 30 years. We found that "better patient management", "further patient management", and "further investigation" were the main health-center referral reasons and decisions. It accounted for 40.08%, 39.22%, and 16.34% of all 459 referrals, respectively. The leading and most common referral cases in the health center were long labor, prolonged first and second stage labor, labor or delivery complicated by fetal heart rate anomaly, preterm newborn, maternal care with breech presentation, premature rupture of membranes, malposition of the uterus, and antepartum hemorrhage. In the hospital RRL and card-sheet, the main referral-in reasons were technical examination, expert advice, further management, and evaluation. We found it overall impossible to match records from the referral logbook in the health center with the patient files in the hospital. Out of 201, only 13.9% of records were perfect matching entries between health center and referred hospital RRL. We found 84%, 14.4%, and 1.6% were appropriate, unnecessary and unknown referrals respectively. The paper illustrates the bottlenecks encountered in the quality assessment of the referrals. We analyzed the current status of the referral pathway, existing communications, guidelines and data quality, as a first step towards an end-to-end effective referral coordination and evidence-based referral service. Accessing, monitoring, and tracking the history of referred patients and referral feedback is challenging with the present paper-based referral coordination and communication system. Overall, the referral services were inadequate, and referral feedback was not automatically delivered, causing unnecessary delays.

The effect of advice network connectedness on problem-solving competence among software developers

Software development requires software developers to share knowledge and solve problems together. Although researchers have considered the business and technical knowledge germane to performing software development tasks, empirical studies investigating business and technical advice networks on problem-solving competence is scarce. Using social network theory, we argue that software developers must be embedded for knowledge brokering within and across business and technical advice connectedness for improving problem-solving competence. Moreover, we argue that contact quality matters in increasing or decreasing individual problem-solving competence. We present data collected via an online survey from 153 respondents in a professional software organisation. Our findings suggest that software developers who engage in knowledge brokering in business and technical advice connectedness will increase problem-solving competence in the software development effort. Our findings also reveal no significant effect of contact quality between these advice networks and problem-solving competence. We discuss our findings’ implications for theory and practice.

Barriers and Opportunities for Sustainable Farming Practices and Crop Diversification Strategies in Mediterranean Cereal-Based Systems

Agricultural intensification negatively affects the environment through soil degradation, loss of agrobiodiversity, greenhouse gas emissions, and nutrient leaching. Thus, the introduction of crop diversification strategies and alternative management practices is crucial to re-design agricultural intensification systems. To better understand the contribution of crop diversification to more sustainable agricultural systems, an accurate evaluation of synergies and trade-offs is needed. In this context, the 5-year Horizon 2020 DIVERFARMING project aims to define sustainable, diversified cropping systems with low-input farming practices, adopting a multi-disciplinary approach. The overall objective of this study was to improve the understanding of the stakeholders’ perceptions of barriers and opportunities for implementing farming practices and crop diversification strategies in intensive rainfed and irrigated cereal-based cropping systems in Italy. Fifty stakeholders, grouped in farmers and technical agricultural advisors, field technical officers from public agricultural administrations, technical experts from NGOs with experience on farming practices, and researchers in agriculture, were engaged by public consultations to capture their practical knowledge of current farming practices for promoting suitable diversified cropping system, as alternative to agricultural intensification systems. The analysis of the stakeholders’ perceptions of barriers and opportunities to the transition of cropping systems towards diversification was done using a multi-criteria decision analysis The most important agro-environmental problem identified by the stakeholders in both the cropping systems was the loss of profitability, associated with the risk of farm abandonment, while minimum tillage, maintenance of vegetation covers, application of organic matter/manure and use of green manure, integrated pest management, and change of rotations were identified as the most adequate and effective practices to be adopted in the case study areas. Crop rotation and legumes were the most adequate diversification strategies selected for the intensive rainfed cereal-based cropping systems, while crop rotations with processing tomato and multiple cropping with short cycle maize and wheat were selected as the most appropriate alternatives for irrigated cereal-based production. Our findings highlight relevant strengths and drawbacks for the implementation of diversified cropping systems under low-input agricultural practices. An important strength is that the crop alternatives selected for the diversification are already cultivated as monocultures and are adapted to the local pedoclimatic conditions, while a major weakness is that few farmers are experts in crop diversification. These results can provide insights to support the planning of agricultural policies at different levels.

Obituary: R.H.Sawkar (1935 –2022)

An eminent Geologist, Shri R.H.Sawkar breathed his last peacefully on the morning of June 1,2022 at the age of 87 in his home at Bengaluru. Shri R.H. Sawkar is survived by his Wife, Son, Daughter and Grand-Children and their families are settled in Bengaluru. Born on March 29, 1935 to Hem Reddy Sawkar and Lingamma Hiregoudar, he is from Magala Village, Huvinhadagalli taluk, Vijayanagar dist, Karnataka. He had four brothers and two sisters. He graduated with B.Sc. (Hons) in Geology in 1959 and M.Sc. in Geology in 1961 from Mysore University followed by Diploma in Aerial Photo Interpretation and training in I.T.C (Australia)-Mineral Exploration and Mine Development Programme under Colombo Plan. He was sportsman, swimmer and wrestler. Started his career in Dept of Mines and Geology, Govt of Karnataka as Assistant Geologist in1959. During 1959 -1964, he was associated for the exploration of Iron ore of West Coast, Clay &amp; Feldspar deposits in Goribidanur taluk, mineral resources of South Canara, Limestone deposits in Bijapur and Belgaum, Gold deposits of Gadag Gold Fields, Karnataka. From 1964-1966 as Geologist (Jr.) he was deputed to National Mineral Development Corporation Ltd (NMDC), here he was associated with the exploration of Iron ore deposits of Kudremukh area, for the preparation of the detailed project report for Visvesvaraya Iron and Steel Ltd for mining iron ore. During 1966 -1970, he was associated the Dharwad division inspection of mining leases, exploration of Iron, Manganese ores of North Canara,Bauxite deposits of coastal area, site selection of Vijayanagar steel Plant, Karnataka. From 1970 - 1976, on deputation, he was associated with the Mysore Minerals Ltd (Karnataka State Minerals Corporation Ltd) as Project Manager and Agent for ore production, sales, shipment, transportation, mine planning, exploration of various minerals, etc. During 1976-1985, on deputation, he worked as Project Manager of Karnataka Copper Consortium Ltd. for the exploration and mine development of Kalyadi Copper Project, Ingaldhal Copper Mine, assisted the Karnataka State Govt in the merger proposal of these copper companies with the Hutti Gold Mines Co Ltd (HGML), merger took place with HGML on 12.07.1985. From1985 -1995, he worked in different capacities in HGML for the Chitrdurga Copper Unit, Gadag Gold Project and Corporate Planning etc. After Retiring from HGML on 31.3.1995 as Executive Director, he worked in HGML as Technical Advisor up to 1.6.1997. He was associated with all the leading earth science associations in India and abroad. Currently, he was Secretary General of the Geological Society of India and actively associated with the MEAI, Rashtriya Jal Biradari, Water Development Rural and Urban societies, Dam Safety etc. He was a member of various State and Central Govt committees. He has presented and published several papers in the national and international seminars and also chaired the technical sessions. He was actively involved as advisor/consultant to the exploration, mining and metallurgy industries. He travelled widely, a simple man with tons of curiosity to discover new things. He guided and inspired the many. Shri R.H. Sawkar will remain in the hearts of the many. He will be missed deeply by his family and colleagues.

Dynamic characteristics of built heritage using ambient noise recordings

The paper addresses the investigation of the dynamic characteristics of a case study, the Egyptian church of Abu serga. To this aim some in situ investigations have been conducted and related results are discussed. The paper presents interesting and innovative aspects, mainly related to the characteristics of the church investigated, covering a lack of knowledge in the scientific literature due to the typology of the church. The integrated geotechnical and geophysical investigation techniques assessed the level of seismic and other geo-environmental risks that Abu serga church suffers from. It suffers multiple Geo-environmental hazards. The main objectives of this pilot study are as follows: (1) Identifying the shear velocity Vs analysis profile of the subsoil and also the resonant frequency of soil and the historical building of Abu serga church using ambient noise recordings (microtremors) to assess the level of seismic and other geo-environmental hazards. (2) Understanding the damage to the historic building caused by the recent earthquakes. (3) Offering technical support and advice on intervention retrofitting for the historic damaged structure.In this study, ambient noise recordings have been processed through horizontal to vertical spectral ratios to examine the main frequencies and to examine whether the building has its main frequency close to that of the soil in order to identify potential resonance phenomena. Numerous ambient noise recordings were recorded on the soil, in the basement, and at each floor of the buildings.This study suggests moderate level of earthquake activity at Abu serga church and is in a good agreement with the fact that “Egypt is a part of the stable African Shield”, but the existence of old structures such as the Abu serga church may reduce the ability to resist any earthquake shaking.

Sixty years of irrigated wheat yield increase in the Yaqui Valley of Mexico: Past drivers, prospects and sustainability

Continued global wheat yield increase (about 1.3% p.a. for 2000–2019) remains an essential condition for greater world food security. Relevant to this challenge is the rise in average farm yield (FY) of irrigated spring wheat in the Yaqui Valley of northwest Mexico from 2 to 7 t/ha between 1960 and 2019. Since the early 1950s the region has been the prime target of wheat research by the International Maize and Wheat Improvement Centre (CIMMYT) and its predecessors, research still having significant impact on wheat in the developing world, a grouping that today delivers more than half the world’s wheat. FY increase was investigated in detail by dividing the interval into three 20-year periods, correcting FY for the strong influence of inter-annual variation in January to March minimum temperature (Tmin J-M, warming lowering yield around 7%/°C) and measuring the remaining linear increase in FY (Fischer et al., 2022). Total yield increase, corrected for Tmin J-M and CO2 rise, relative to average yield in each period, was 4.17%, 0.47%, and 1.59% p.a. for 1960–79, 1980–99, and 2000–19, respectively. The breeding component, estimated by the increase in the Varietal Yield Index in farmers’ fields, rose at 0.97%, 0.49%, and 0.71% p.a., respectively. The remaining yield change (3.16, −0.02% and 0.87% p.a., respectively) comprised the net effect of improved crop management (agronomic progress) plus that of off-farm changes, together here called agronomy+ . Major changes in agronomy included: a large increase in fertiliser N use, benefitting early on from a large positive variety × N interaction; in the second period a switch to planting on raised beds and a decline in rotational diversity; and in the final period, consolidation of operational crop units and probably more skilful and timely management. Off-farm developments saw strong government financial support in the first period, but in the second period breakdown of the traditional small holder land system and withdrawal of government support. The last period saw better prices and improved access to technical advice. Breeding progress is expected to continue in the Yaqui Valley but at a slowly diminishing rate (currently 0.66% p.a.), while progress from new agronomy appears limited. Although FY gaps are small, some gap closing remains possible, and 1.2% p.a. FY progress is estimated for the next 20 years in the absence of new technologies. World wheat food security without area increase will increasingly depend on developing countries where yield gaps are generally wider and gap closing prospects better. Biophysical sustainability of the Yaqui Valley wheat system is moderately good but N management and diversity can be improved.