Tropical Agricultural Research and Extension最新文献

{"title":"Evaluation of phytotoxicity of composts produced from spent mushroom substrate using seed germination bioassay of Raphunus sativus L.","authors":"S. R. Amarasinghe, W. Jayaweera","doi":"10.4038/tare.v25i4.5601","DOIUrl":"https://doi.org/10.4038/tare.v25i4.5601","url":null,"abstract":"","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124377202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative and qualitative aspects of cinnamon (Cinnamomum verum J. Presl) bark yield under modified planting systems","authors":"H. N. Aluthgamage, D. Fonseka, C. K. Benaragama","doi":"10.4038/tare.v25i4.5606","DOIUrl":"https://doi.org/10.4038/tare.v25i4.5606","url":null,"abstract":"","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114220650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Covid-19 restrictions counterfactuals: an overview of postharvest value chain actors in Nigeria","authors":"J. A. Adegbola, O. Owojaiye, O. Ogunremi, O. Aina, K. C. Achime, K. O. Lijoka, P. Pessu","doi":"10.4038/tare.v25i4.5613","DOIUrl":"https://doi.org/10.4038/tare.v25i4.5613","url":null,"abstract":"","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131528371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of morphological traits and biochemical parameters of tea (Camellia sinensis) genotypes for the quality and yields","authors":"H. Chy, A. Islam, J. K. Saha, R. Tabassum, M. A. Aziz, F. Monshi","doi":"10.4038/tare.v25i2.5577","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5577","url":null,"abstract":"An extensive knowledge on morphological traits and biochemical properties is a prerequisite in utilizing the existing tea germplasm for its improvement incurring grower acceptance and market profitability. The aim of the present study was to evaluate the five clones of tea genotypes (SH/D/11/333, H/B/6/4, TV - 23, SH/D/11/13 and H/ B/2/3) based on their morphological and biochemical responses in the environment of Sylhet, Bangladesh to identify superior clone. The experiment was laid out in a Latin Square Design (LSD) and Completely Randomized Design (CRD) with five replications and collected data were analyzed by using SPSS. The findings demonstrated that the greater amounts of theaflavins (TF), thearubigins (TR), a ratio of TF and TR, high polymerized substances, caffeine content and the highest amount of liquor colour index were observed in the superior quality of tea genotypesTV - 23 and H/B/2/3. Meanwhile, another test clone SH/D/333 showed better performance in morphological traits along with yield attributes. In overall, the test clone H/B/2/3 and standard clone TV - 23 can be considered for quality tea production while, SH/D/11/333 can be used for commercial plantations and future utilization to shape up the Bangladesh tea industry sustainably.","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125914164","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Knowledge, attitudes and constraints faced by poultry workers in Kwara State, Nigeria","authors":"S. Ibrahim-Olesin, L. Adefalu, M. Olaolu, L. Njoku, C. Izuogu, J. Obi","doi":"10.4038/tare.v25i2.5569","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5569","url":null,"abstract":"","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115951990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of low amylose rice (Oryza sativa. L) variety at 309 for rice based confectionery production in Sri Lanka","authors":"K. Kumara, B. D. Pathinayake, M. Siriwardana, D. M. Withanawasam, R. F. Hafeel, N. Manamperi","doi":"10.4038/tare.v25i2.5575","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5575","url":null,"abstract":"","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131844784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Surface sterilization protocols of leaf and bud explants for initiating in vitro cultures of Piper nigrum L. (Pepper)","authors":"W. P. D. S. Gunawardhana, P. Perera, H. M. A. P. Muhandiram, D. Swarnathilaka, K. Priyadarshani","doi":"10.4038/tare.v25i2.5598","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5598","url":null,"abstract":"Piper nigrum L. is traditionally propagated by stem cuttings and seeds, but seeds tend to produce progenies with higher variations due to cross - pollination habits. Plant tissue culture technique is the most efficient and reliable method for rapid clonal multiplication, however, endophyte microbial contamination limits the success. Twelve surface protocols were tested on two bud types (apical and axillary buds) and three different maturity stages of the leaf (first, third and fifth leaves) to optimize the conditions for culture initiation. The Completely Randomized Design was used with 60 explants. Maximum likelihood analysis of variance was conducted using the Proc CatMod procedures of PC - SAS to analyse the count data. The continuous data were analysed using Analysis of Variance and the mean separation was done using Least Significant Difference. Results revealed that the optimal sterilization protocol was specific to the explant type. The third leaf from the top of the plant and the apical bud was the best explants giving minimum tissue contamination and browning. Fungal contamination was frequent in leaf explants whereas bacteria in bud explants. The protocols containing 70% ethanol (30s), 0.1% HgCl 2 (5 min) and sterile distilled water with activated charcoal (1 gL - 1 ; 25 min), and 20% sodium hypochlorite (NaOCl) (15 min) with 70% ethanol (1 min) were comparable for the third leaf. In apical buds, the protocols of 0.1% HgCl 2 (10 min) and 70% ethanol (1 min), and 10% NaOCl (15 min) with 70% ethanol (1 min) provided comparable performances with the highest survival and least contamination rates. The potential of replacing hazardous HgCl 2 with non - toxic NaOCl by manipulating the concentration and the exposure time in combination with 70% ethanol was highlighted.","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132054777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Consumer awareness on nutrition fact panel of dairy food products: a context of urban, semi-urban and rural consumers in Sri Lanka","authors":"M. Kodikara, P. Perumpuli, K. B. N. Silva","doi":"10.4038/tare.v25i2.5582","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5582","url":null,"abstract":"A detailed nutrition fact panel is one of the best ways that can encourage consumers to make good decisions with regard to their eating habits. Nutrition fact communicates the information on nutrients available in a particular food. Past studies mainly focused on common food label information. However, the nutritional information is directly related to the healthy life of humans. Therefore the present study was conducted to analyse consumers ’ awareness on nutrition fact panel while eliciting major sources and barriers to awareness. Further, the study identifies socio - demographic characteristics of consumers related to nutrition fact panel awareness and thereby develops appropriate suggestions and recommendations to scale up the awareness and fill the nutrition labelling information knowledge gap for the consumer benefit. A semi - structured Google questionnaire was used to collect information from a purposive sample of 135 consumers purchasing packed dairy food products from local supermarkets in Colombo, Matara, and Monaragala districts in a way to represent urban, semi - urban and rural areas respectively. It was found that the consumers in Colombo (P=0.01), Matara (P=0.024), and Monaragala (P=0.030) districts are having a significant awareness of nutritional fact panels and their information. Consumers who purchase dairy products from supermarket outlets in all three districts stated that they always look at the sugar level and fat level when purchasing dairy food items. The selected consumers stated that they face inconveniences in understanding the nutrition fact panel due to the used scientific or technical terms and the unfamiliar language. They reveal that it is important to uplift their knowledge through creating colourful and attractive labels (20.9%), and advertisements (18.7%) via mass media. Consumers stated that indication of fat (P=0.000) and sugar (P=0.000) level with colour code is extremely useful. Results revealed that front of pack nutrition labelling as the best way to increase consumer awareness on food label. The study therefore seeks to address the issue of how consumers use food nutrition label information and its effect on the purchasing decision of consumers. The outcomes of the study are helpful for policy makers in formulating policies for the benefit of both food producers in their marketing strategies and consumers to make healthy food choices.","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132312450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of mobile-based guideline model of good agricultural practices for potato farmers in Sri Lanka","authors":"A. T. Shanadi, G. C. Samaraweera, D. Wathugala, W. A. Indika, S. M. Munasignhe","doi":"10.4038/tare.v25i2.5580","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5580","url":null,"abstract":"Potato is the most popular root crop and represents a significant portion of the world ’ s food requirements. However, it has been notified that the quality and safety of potatoes produced in Sri Lanka suffer from inappropriate farming practices. Therefore, this study aims to develop a mobile - based guideline model of Good Agricultural Practices (GAPs) by reviewing a present farming practice in potato cultivation and to explore farmers ’ view on GAPs for potato production in Sri Lanka. The GAPs based guideline model was designed according to the Design Science Research methodology with primary and secondary data, which obtained from 225 potato farmers through a pre - tested structured questionnaire, formal and informal discussions. Then designed model was verified and validated through domain experts. Finally, information and guidance in the designed model is fed through a mobile application. Interestingly, 96% of farmers have a general idea on GAPs, 98% are willing to know about GAPs and the majority (92%) like to follow guidelines based on GAPs. Moreover, age (p=0.000), education level (p=0.001), farming experiences (p=0.008) and willingness to know GAPs (p=0.000), were affect significantly on farmer willingness to follow GAPs through the mobile - based application system. Moreover, the farming practices attached with the usage of synthetic chemicals and fertilizer, soil fertility management, postharvest handling were not properly practiced (78%). Further, spearmen correlation analysis showed that age (p=0.000), education level (p=0.014), and farming experiences (p=0.000), were affect significantly on farmers ’ awareness of GAPs. The findings shed a green light for introducing a mobile - based guideline model to provide actionable information and guidance of GAPs to the farmers through a “ Govi Nena ” real - time mobile based application. Further it supports farmers to overcome improper farming practices of potato cultivation in Sri Lanka that ultimately enhancing the potato production in Sri Lankan context.","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130989617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rice production under the organic fertilizer use policy in Sri Lanka","authors":"N. Senanayaka","doi":"10.4038/tare.v25i2.5590","DOIUrl":"https://doi.org/10.4038/tare.v25i2.5590","url":null,"abstract":"Rice cultivation in the country dates back to time immemorial, though the rice production was not sufficient to meet the demand with the increasing population lately. Rice breeding work started during the last phase of the colonial era and continued with the green revolution in the 1960s. As a result, the national average yield improved from 0.75mt/ha during the colonial time to 4.82 mt/ha today. Improved varieties today are highly responsive to inorganic fertilizers, high tillering and high yielding with some insect and disease resistance. However, inorganic fertilizer use in the country since the 1950s resulted in soil degradation and was further aggravated by inappropriate mechanization and weedicide use. This led the department of agriculture to recommend the use of organic matter to supplement inorganic fertilizer applications to sustain production. The situation was viewed superficially and the government took a policy decision to ban the import of inorganic fertilizer and agrochemicals without any valid research data or suitable organic alternatives for pesticides, disregarding the high shriek from the eminent scientists and paddy farmers. Ad - hoc fertilizer recommendations provided to farmers and the use of alien fertilizer formulations without any field research data locally were either rejected or used sparingly by the farming community. This huge cry was later politicized and prevented the President to change his decision, though some flexibility was approved. Policy decisions ultimately ended up in huge rice imports, amidst a shortage of foreign currency, to prevent food shortages. Organic fertilizer sources are many though their availability individually is not adequate for the rice sector. There are many compost producers whose products vary in nutritive content from producer to producer and from batch to batch of the same producer. Thus, organic fertilizer standardization and providing a single fertilizer recommendation is impossible if not time and labor intensive and financially very expensive. However, a concrete single recommendation for organic fertilizer is not possible even with extensive field experimentation. Therefore use of organic fertilizer as a basal application alone with inorganic fertilizer to meet the peak nutrient demand at several stages of rice plant growth can be a good option to sustain rice production, of course after a minimum of two season ’ s adaptive field research. This paper reviews the pros and cons of sustainable rice production in the country under the organic fertilizer policy of the government.","PeriodicalId":191739,"journal":{"name":"Tropical Agricultural Research and Extension","volume":"53 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129682359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}