114 research outputs found

    Impact of water saving irrigation systems on water use, growth and yield of irrigated lowland rice

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    To meet the growing demand for food and other needs from an increasing population, the rice production in Sri Lanka, which was 3.87 million tonnes in 2008, has to be increased to 4.2 million tonnes by the year 2020. This requirement could be achieved by increasing productivity and/or by increasing the cultivated extent. In 2008, about 77 % and 68 % of the total paddy land extent was cultivated with either partial or full irrigation during the maha and yala seasons, respectively. A considerable extent of paddy land was either not cultivated or cultivated for other crops due to the scarcity of water in the dry and intermediate zones. Furthermore, with increased competition for water for domestic and industrial needs and climate change, there will be further reductions in the availability of water for rice cultivation. Conserving irrigation water would increase the cultivated extent of land while reducing the probability of ate season water-stress in the cultivated rice crop. We studied the impact of different soil water regimes on water use, nutrient uptake, growth and grain yield of 3 – 3� age lowland rice at the Rice Research and Development Institute, Batalagoda, Ibbagamuwa. There was no significant difference in the grain yield in rice when grown under either saturated or flooded conditions, but the yield decreased significantly with alternate wetting and drying. However, under saturated conditions, the irrigation water requirement was significantly lower than the flooded condition. The lowest irrigation water requirement was recorded with saturated to dry conditions. The irrigation water requirement under flooded conditions, when compared with the saturated condition, increased by 39 % during the yala season. During the maha season, even though the total irrigation requirement was lower, when compared to saturated conditions, four times more irrigation water was required under flooded conditions. There was a significant increase in plant dry matter production and leaf N (nitrogen) under saturated conditions, when compared with conventional flooded conditions. These findings suggest that when soil water is maintained at a saturated level in lowland rice, a considerable amount of irrigation water could be saved without sacrificing grain yield.Length: pp.57-64RiceIrrigated farmingWater conservationIrrigation systems

    People‟s Attitude toward Sri Lankan Cricket

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    This paper has two objectives. (1) To identify the degree of People‟s attitudeabout the Sri Lankan Cricket 2) To examine the perception of the people about SriLankan Cricket after the 2011 "world cup". Hence this study was based on threepredictions namely 1) There is a negative correlation between beliefs and attitudetoward cricket, (H1), 2) There is a negative correlation between loyalty and attitudetoward cricket, (H2). 3) There is a negative correlation between preference and attitudetoward cricket, (H3). At the point of testing these hypotheses, the study was limited to asample population for the convenience of the study, Kandy sectarian division, where thePallekale international cricket stadium is located and one game of world cup 2011 washeld. Five other sub divisions were selected: those located around the ground, andsample size of each division was selected proportionate to the sub division population.Then respondents were from sample random sampling technique with association ofdivisional registration unit and random number table. The data were collected from therespondents by exploring a questionnaire that was carefully conducted according to thelikert scale method. 117 questionnaires were distributed among the sample on the basisof quota given to each sub division. The three hypotheses were tested using SPSSversion 19.0. For validity and reliability of questionnaire, conbach's alpha (0.73) wasalso used. The results show that negative correlation between beliefs and attitudetowards cricket (r= -4.56*). Loyalty and attitude towards cricket also shows anegative(r= -5.78*). Preference and attitude toward cricket also shows a negative (r= -4.65*). Based on the findings of the study number of recommendations was made tothe sports authorities and researchers in the field of sport to improve attitude aboutCricket in the country in future. Resulting from implementation of givenrecommendations, the respective benefits will be yielded by Sri Lankan sports, ataggregate level.Key words: Cricket, Beliefs, Prefer, Loyalty, Attitude

    An empirical investigation on the demographic characteristics of specialized visitors and their preferences to use up-country tea plantations as nature tourism sites

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    Up country tea plantations have been emerging as sites for nature tourism for both local and foreigntourists who were earlier used to visit traditional tourism sites (e.g. Anuradhapura, Pollonnaruwa andSeegiriya) predominantly. In light of this, evaluation of what characteristics associated with thesevisitors. and to which extent, have an impact on a selection of nature tourism sites available in theseplantations as their "first choice" has become important, since that information can be used to formulatea market-friendly environmental policies to promote it.Those "specialized visitors" (i. e. those who visit an Up Country tea plantation for the first time basedon the information they received from an external source and those who repeated) were selected asthe cases for data collection (n = 120). A semi-structured questionnaire was used in this respect atseven purposely-selected entry points to the plantations located in the Nuwara-Eliya district.Both qualitative and quantitative data analysis techniques were used. The results indicate that, ingeneral, young people (i. e. 56% of sample within 20 - 29 years); those who married (59%); and withaverage house hold size of three to four members (84%); with high income level (i.e. 43% of sampleabove the Rs. 50,000 per month). and possess a degree or equivalent (60%) decided to enjoy thesesites. Majority of them were employed at private sector enterprises as middle to top-level managers.In terms of reasons for their visit, about 63 percent of visitors indicated aesthetics/scenic beautyfollowed by bird watching (52%), forest trekking (46%), mountain climbing (44%), hiking (42%) andsafari (30%). Regarding the existing facilities at these sites, about 60 and 91 percent of local andforeign visitors, respectively, were satisfied. Several visitors (45%) proposed that the existinginfrastructure facilities to be improved. With respect to entry fee, 65 percent of the visitors preferredto make the payment as a whole and rest as a small entrance fee with an additional fee for eachactivity. The results highlight that government agencies should cooperate with plantation companiesto promote nature tourism as a viable non-crop diversification mechanism.

    Towards Digital Thinking and Practices: Experiences of Sri Lankan Teachers and Students

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    Commonwealth Digital Education Leadership Training in Action (C-DELTA), an open and free online programme of the Commonwealth of Learning, provides a framework to foster digital education. The Open University of Sri Lanka implemented an intervention during 2020-2021 to promote digital education in Sri Lankan secondary schools, through the adoption of C-DELTA. This paper presents how C-DELTA supported developing digital thinking and practices among teachers and students, challenges faced and supports received by them, and impacts of the intervention. Participants’ experiences were captured through questionnaire surveys, concept maps, focus group interviews, reflective stories, and video narratives. The findings revealed that the intervention has enhanced developing digital learning skills of teachers and students, and changing their thinking and practices, yet, amid various challenges. While the implementation of C-DELTA in schools has been slow during the COVID-19 pandemic, the pandemic itself has shown the significance of improving digital literacy and digital practices

    Climate Change Impacts on Rice Farming Systems in Northwestern Sri Lanka

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    Sri Lanka has achieved tremendous progress since 1950 in crop production and food availability. Yields grew at an impressive rate until leveling off in the mid-eighties. Sri Lanka's population is anticipated to grow in the coming decades, creating an ever-greater demand for food security on the household, sub-district, regional, and national scales.The agricultural sector in Sri Lanka is vulnerable to climate shocks. An unusual succession of droughts and floods from 2008 to 2014 has led to both booms and busts in agricultural production, which were reflected in food prices. In both instances, the majority of farmers and consumers were adversely affected.At present the rice-farming systems are under stress due to inadequate returns for the farmers and difficulty in coping with shocks due to climate, pests, and diseases, and prices for produce. There are government price-support mechanisms, fertilizer-subsidy schemes, and crop insurance schemes, but the levels of the supports are modest and often do not effectively reach the farmers

    A multiple timepoint pre-post evaluation of a ‘sexual respect’ dvd to improve competence in discussing sex with patients with disability

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    Sexual problems are common after chronic illnesses and disability, yet research indicates that this is a neglected area in healthcare services. Evaluation studies provide evidence of the effectiveness of education in enhancing professionals’ knowledge, skills, and comfort in addressing patients’ sexual concerns. However, there are limited evaluations aimed at improving ability to discuss sexuality when working with people with disabilities. The overall aim of this study was to evaluate a ‘Sexual Respect’ DVD as an intervention to improve competence in addressing ‘sexuality and disability’. A mixed methods design was used with both quantitative and qualitative components. Nursing students’ self-report ratings of knowledge, confidence, comfort and willingness (to discuss sexuality) levels were collected across four time points: baseline, pre-intervention, post-intervention, and follow-up. Data were analysed using one-way repeated measures ANOVAs with post hoc comparisons. Open-ended qualitative comments relating to the barriers and facilitators to discussing sexuality were analysed using content analysis and subsequent frequency analysis. Reported barriers included lack of knowledge about sex¬uality and disability issues, the patient’s level of disability, and waiting for the patient to raise sexuality issues first. Facilitators included education/training, written information, and if the patient raised it first. Overall, the DVD intervention had a significant and positive impact on nursing students’ self-reported knowledge, confidence, comfort and willingness levels. The findings are discussed in relation to the PLISSIT model, which emphasises the importance of a proactive approach to addressing sexuality issues

    Fluid challenges in intensive care: the FENICE study A global inception cohort study

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    Fluid challenges (FCs) are one of the most commonly used therapies in critically ill patients and represent the cornerstone of hemodynamic management in intensive care units. There are clear benefits and harms from fluid therapy. Limited data on the indication, type, amount and rate of an FC in critically ill patients exist in the literature. The primary aim was to evaluate how physicians conduct FCs in terms of type, volume, and rate of given fluid; the secondary aim was to evaluate variables used to trigger an FC and to compare the proportion of patients receiving further fluid administration based on the response to the FC.This was an observational study conducted in ICUs around the world. Each participating unit entered a maximum of 20 patients with one FC.2213 patients were enrolled and analyzed in the study. The median [interquartile range] amount of fluid given during an FC was 500 ml (500-1000). The median time was 24 min (40-60 min), and the median rate of FC was 1000 [500-1333] ml/h. The main indication for FC was hypotension in 1211 (59 %, CI 57-61 %). In 43 % (CI 41-45 %) of the cases no hemodynamic variable was used. Static markers of preload were used in 785 of 2213 cases (36 %, CI 34-37 %). Dynamic indices of preload responsiveness were used in 483 of 2213 cases (22 %, CI 20-24 %). No safety variable for the FC was used in 72 % (CI 70-74 %) of the cases. There was no statistically significant difference in the proportion of patients who received further fluids after the FC between those with a positive, with an uncertain or with a negatively judged response.The current practice and evaluation of FC in critically ill patients are highly variable. Prediction of fluid responsiveness is not used routinely, safety limits are rarely used, and information from previous failed FCs is not always taken into account
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