Subjects -> AGRICULTURE (Total: 981 journals)
    - AGRICULTURAL ECONOMICS (93 journals)
    - AGRICULTURE (680 journals)
    - CROP PRODUCTION AND SOIL (120 journals)
    - POULTRY AND LIVESTOCK (58 journals)

AGRICULTURE (680 journals)            First | 1 2 3 4     

Showing 201 - 263 of 263 Journals sorted by number of followers
Biodiversity     Hybrid Journal   (Followers: 27)
Agriculture & Food Security     Open Access   (Followers: 21)
Future of Food : Journal on Food, Agriculture and Society     Open Access   (Followers: 20)
African Journal of Food, Agriculture, Nutrition and Development     Open Access   (Followers: 18)
Nature Plants     Full-text available via subscription   (Followers: 17)
Advances in Agriculture     Open Access   (Followers: 15)
Agricultural History Review     Full-text available via subscription   (Followers: 15)
Indian Journal of Agricultural Sciences     Open Access   (Followers: 12)
Biological Agriculture & Horticulture : An International Journal for Sustainable Production Systems     Partially Free   (Followers: 11)
Journal of Land and Rural Studies     Hybrid Journal   (Followers: 11)
Advances in Life Science and Technology     Open Access   (Followers: 11)
Agriculture and Food Sciences Research     Open Access   (Followers: 10)
Agricultural Research     Hybrid Journal   (Followers: 10)
Indian Horticulture     Full-text available via subscription   (Followers: 9)
Culture, Agriculture, Food and Environment     Hybrid Journal   (Followers: 8)
Arboricultural Journal : The International Journal of Urban Forestry     Hybrid Journal   (Followers: 7)
Aceh International Journal of Science and Technology     Open Access   (Followers: 7)
Invertebrate Reproduction & Development     Hybrid Journal   (Followers: 6)
Journal of Agriculture and Sustainability     Open Access   (Followers: 6)
Journal of Agriculture and Social Research (JASR)     Open Access   (Followers: 6)
New Journal of Botany     Hybrid Journal   (Followers: 6)
Journal of Agriculture, Forestry and the Social Sciences     Full-text available via subscription   (Followers: 6)
International Journal of Agriculture and Forestry     Open Access   (Followers: 6)
Acta Scientiarum. Animal Sciences     Open Access   (Followers: 5)
Journal of Advances in Agriculture     Open Access   (Followers: 5)
American Journal of Rural Development     Open Access   (Followers: 5)
EvoDevo     Open Access   (Followers: 5)
Cereal Chemistry     Full-text available via subscription   (Followers: 4)
Acta Agrobotanica     Open Access   (Followers: 4)
Italian Journal of Agronomy     Open Access   (Followers: 4)
Journal of Agricultural Science     Open Access   (Followers: 4)
EU Agrarian Law     Open Access   (Followers: 4)
Studies in Australian Garden History     Full-text available via subscription   (Followers: 4)
Journal of Agriculture and Rural Development in the Tropics and Subtropics     Open Access   (Followers: 4)
Tanzania Journal of Agricultural Sciences     Open Access   (Followers: 4)
Journal of Modern Agriculture     Open Access   (Followers: 4)
Journal of Agriculture and Natural Resources Sciences     Open Access   (Followers: 3)
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Agricultural Extension and Rural Development     Open Access   (Followers: 3)
Biocatalysis and Agricultural Biotechnology     Hybrid Journal   (Followers: 3)
Sustainable Agriculture Research     Open Access   (Followers: 3)
Food and Energy Security     Open Access   (Followers: 3)
International Journal of Agricultural Research, Innovation and Technology     Open Access   (Followers: 3)
International Journal of Applied Agriculture and Apiculture Research     Open Access   (Followers: 3)
Agra Europe     Full-text available via subscription   (Followers: 3)
Journal of Agricultural Chemistry and Environment     Open Access   (Followers: 3)
Asian Journal of Medical and Biological Research     Open Access   (Followers: 3)
Acta Universitatis Sapientiae, Alimentaria     Open Access   (Followers: 3)
Journal of Essential Oil Research     Hybrid Journal   (Followers: 3)
Diatom Research     Hybrid Journal   (Followers: 3)
Journal of Agricultural Extension     Open Access   (Followers: 2)
Nigerian Food Journal     Full-text available via subscription   (Followers: 2)
International Journal for Parasitology : Parasites and Wildlife     Open Access   (Followers: 2)
Agricultura Tropica et Subtropica     Open Access   (Followers: 2)
Journal of Apicultural Science     Open Access   (Followers: 2)
International Journal of Agricultural Management and Development     Open Access   (Followers: 2)
Ciencia forestal en México     Open Access   (Followers: 2)
Revista Cubana de Ciencia Agrícola     Open Access   (Followers: 2)
Journal of Agriculture and Food Sciences     Full-text available via subscription   (Followers: 2)
Tropical Agricultural Research and Extension     Open Access   (Followers: 2)
Rural China     Hybrid Journal   (Followers: 2)
Rural Sustainability Research     Open Access   (Followers: 2)
Journal of Biology, Agriculture and Healthcare     Open Access   (Followers: 2)
Agro-Science     Full-text available via subscription   (Followers: 2)
Ghana Journal of Agricultural Science     Full-text available via subscription   (Followers: 2)
New Zealand Journal of Agricultural Research     Hybrid Journal   (Followers: 2)
Tropical Agricultural Research     Open Access   (Followers: 2)
Journal of Sustainable Society     Open Access   (Followers: 2)
Journal of Food Security     Open Access   (Followers: 2)
Journal of Agricultural Engineering     Open Access   (Followers: 2)
Revista Verde de Agroecologia e Desenvolvimento Sustentável     Open Access   (Followers: 2)
Huria : Journal of the Open University of Tanzania     Full-text available via subscription   (Followers: 2)
Buletin Peternakan : Bulletin of Animal Science     Open Access   (Followers: 1)
Berkala Ilmiah Pertanian     Open Access   (Followers: 1)
Journal of Agricultural Studies     Open Access   (Followers: 1)
RIA. Revista de Investigaciones Agropecuarias     Open Access   (Followers: 1)
Agricultural Commodities     Full-text available via subscription   (Followers: 1)
Journal of Agricultural Engineering     Full-text available via subscription   (Followers: 1)
Jurnal Veteriner     Open Access   (Followers: 1)
Archivos de Zootecnia     Open Access   (Followers: 1)
Journal of Natural Sciences Research     Open Access   (Followers: 1)
Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca : Food Science and Technology     Open Access   (Followers: 1)
Wartazoa. Indonesian Bulletin of Animal and Veterinary Sciences     Open Access   (Followers: 1)
Research in Agriculture, Livestock and Fisheries     Open Access   (Followers: 1)
COCOS : The Journal of the Coconut Research Institute of Sri Lanka     Open Access   (Followers: 1)
Emirates Journal of Food and Agriculture     Open Access   (Followers: 1)
Frontiers in Science     Open Access   (Followers: 1)
Global Approaches to Extension Practice : A Journal of Agricultural Extension     Full-text available via subscription   (Followers: 1)
Chemical and Biological Technologies for Agriculture     Open Access   (Followers: 1)
Progressive Agriculture     Open Access   (Followers: 1)
Folia Horticulturae     Open Access   (Followers: 1)
Rivista di Studi sulla Sostenibilità     Full-text available via subscription   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Annals of Agricultural Sciences     Open Access   (Followers: 1)
Avances en Investigacion Agropecuaria     Open Access   (Followers: 1)
International Journal of Sustainable Agricultural Management and Informatics     Hybrid Journal   (Followers: 1)
Bangladesh Journal of Agricultural Research     Open Access   (Followers: 1)
Journal of Agricultural Sciences     Open Access   (Followers: 1)
Jurnal Ilmu dan Kesehatan Hewan (Veterinary Science and Medicine Journal)     Open Access   (Followers: 1)
Arquivos do Instituto Biológico     Open Access   (Followers: 1)
International Journal of Recycling of Organic Waste in Agriculture     Open Access   (Followers: 1)
International Journal of Agricultural Extension     Open Access   (Followers: 1)
Innovare Journal of Agricultural Science     Open Access   (Followers: 1)
International Journal of Agriculture System     Open Access   (Followers: 1)
Acta Technologica Agriculturae     Open Access   (Followers: 1)
Plant Knowledge Journal     Open Access   (Followers: 1)
Iranian Journal of Applied Animal Science     Open Access   (Followers: 1)
Journal of Degraded and Mining Lands Management     Open Access   (Followers: 1)
Revista Brasileira de Higiene e Sanidade Animal     Open Access   (Followers: 1)
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
Nigerian Journal of Technological Research     Full-text available via subscription   (Followers: 1)
Social and Natural Sciences Journal     Open Access  
Jurnal Agroteknologi     Open Access  
Perspectivas Rurales Nueva Época     Open Access  
Organic Farming     Open Access  
Research Ideas and Outcomes     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Landtechnik : Agricultural Engineering     Open Access  
International Letters of Natural Sciences     Open Access  
Agrociencia Uruguay     Open Access  
Heliyon     Open Access  
Ciência e Técnica Vitivinícola     Open Access  
Oilseeds and fats, Crops and Lipids     Open Access  
Annals of Silvicultural Research     Open Access  
Pastura : Journal Of Tropical Forage Science     Open Access  
Journal of Citrus Pathology     Open Access  
Revista Iberoamericana de las Ciencias Biológicas y Agropecuarias     Open Access  
Kansas Agricultural Experiment Station Research Reports     Open Access  
International Journal of Secondary Metabolite     Open Access  
Scientia Agropecuaria     Open Access  
Pelita Perkebunan (Coffee and Cocoa Research Journal)     Open Access  
Revista de Agricultura Neotropical     Open Access  
Cogent Food & Agriculture     Open Access  
Fave : Sección ciencias agrarias     Open Access  
Revista de Ciências Agrárias     Open Access  
Review of Agrarian Studies     Open Access  
Nigerian Journal of Biotechnology     Open Access  
Nigeria Agricultural Journal     Full-text available via subscription  
Annales des Sciences Agronomiques     Full-text available via subscription  
Journal of the Bangladesh Agricultural University     Open Access  
Journal of Buffalo Science     Hybrid Journal  
Revista de Ciências Agroveterinárias     Open Access  
Tropical Grasslands - Forrajes Tropicales     Open Access  
Research in Plant Sciences     Open Access  
World Journal of Agricultural Research     Open Access  
Universal Journal of Agricultural Research     Open Access  
Research & Reviews : Journal of Agriculture Science and Technology     Full-text available via subscription  
Revue Marocaine des Sciences Agronomiques et Vétérinaires     Open Access  
Nativa     Open Access  
SAARC Journal of Agriculture     Open Access  
West African Journal of Applied Ecology     Open Access  
Journal of Agricultural Research and Development     Full-text available via subscription  
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Global Journal of Agricultural Sciences     Full-text available via subscription  
Agrosearch     Open Access  
Agronomie Africaine     Full-text available via subscription  
Professional Agricultural Workers Journal     Open Access  
Interciencia     Open Access  
Nepal Journal of Science and Technology     Open Access  
Journal of the Saudi Society of Agricultural Sciences     Open Access  
Information Processing in Agriculture     Open Access  
Sabaragamuwa University Journal     Open Access  
Ceiba     Open Access  
Research in Sierra Leone Studies : Weave     Open Access  
The Agriculturists     Open Access  
La Calera     Open Access  
Selçuk Tarım ve Gıda Bilimleri Dergisi     Open Access  
Revista de la Universidad del Zulia     Open Access  
Journal of Arid Land     Hybrid Journal  
Rangifer     Open Access  
Encuentro     Open Access  
Journal Of Agrobiotechnology     Open Access  
Coffee Science     Open Access  
Bangladesh Journal of Scientific Research     Open Access  
Landbohistorisk Tidsskrift     Open Access  
Biotecnología en el Sector Agropecuario y Agroindustrial     Open Access  
Walailak Journal of Science and Technology     Open Access  
Universidad y Ciencia     Open Access  
Tropical and Subtropical Agroecosystems     Open Access  
Terra Latinoamericana     Open Access  
Revista Iberoamericana de Tecnologia Postcosecha     Open Access  
Revista Brasileira de Ciências Agrárias     Open Access  
Multiciencias     Open Access  
Ensaios e Ciência : Ciências Biológicas, Agrárias e da Saúde     Open Access  
Bioagro     Open Access  
Agroalimentaria     Open Access  
Revista Mexicana de Ciencias Agrícolas     Open Access  
Revista U.D.C.A Actualidad & Divulgación Científica     Open Access  
Revista Ciencias Técnicas Agropecuarias     Open Access  
Revista Chapingo. Serie horticultura     Open Access  
Pastos y Forrajes     Open Access  
Fitosanidad     Open Access  
Cultivos Tropicales     Open Access  
Cuadernos de Desarrollo Rural     Open Access  
Ciencia e Investigación Agraria     Open Access  
Agronomía Mesoamericana     Open Access  
Agronomía Costarricense     Open Access  
Agrociencia     Open Access  
Agrivita : Journal of Agricultural Science     Open Access  

  First | 1 2 3 4     

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Journal Cover
Tropical Agricultural Research
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Print) 1016-1422
Published by Sri Lanka Journals Online Homepage  [71 journals]
  • Ingestive behaviour and Growth Performance of Boer Crossbred and
           Indigenous Goat Kids Under Different Feeding Levels in Semiarid Region in

    • Abstract: The aim of this study was to evaluate intake, digestibility, ingestive behavior and performance of Boer × non-descript breed F1, Canindé, and Moxotó kids subjected to three levels of feeding (ad libitum or intake restricted by 25 or 50%). The study used 45 non-castrated males, 15 animals from each genetic group, assigned to a 3 × 3 factorial arrangement, with 5 replicates of each genetic group at each feeding level. There was an interaction (P0.05) of genotypes and no interaction between feeding levels and genotypes for parameters of ingestive behavior. At the level of ad libitum intake, Boer × NDG F1 animals showed higher dry matter intake and ADG, and lower dry matter digestibility compared to the Canindé and Moxotó, respectively. Kids at the 50% restriction level had a longer rumination time per gram of dry matter ingested (0.76 min/g) compared to those fed ad libitum (0.29 min/g) and with 25% restriction (0.41 min/g, P
  • Assessment of Grain Preference Among Selected Rice Varieties by Field Rat,
           Bandicota bengalensis and House Rat, Rattus rattus in Sri Lanka

    • Abstract: Rice is the staple food in Sri Lanka, where significant grain losses in storage are one of the key factors affecting food security. Rodents cause the highest losses in rice, mainly by Bandicota bengalensis and Rattus rattus in the Sri Lankan context. Rodent damage depends on factors mainly on storage management and the type of rice varieties. However, there is no information on varietal and grain preference by rodents. Hence the experiment was conducted to determine the grain preference of rodents for available 45 rice varieties. The study was conducted in the screen house (1.5m x 9m x 1.5m), modified by providing hiding places to rodents. Three trays filled with 250g of paddy seeds of each variety were placed inside the screen house. One day starved 100 rats were released into the experimental setup and allowed to feed. The remaining grain quantities were measured at 3, 5, and 7 days after release. The same procedure was followed separately for both species. The study revealed that grain losses were dependent not only on the rice variety but also on the rat species. At311, Bg409, and Bg250 were the most preferred varieties, whereas At307, Bw312, At303, Bg379/2, and Bw351 were the least preferred by B. bengalensis. Meanwhile, Bw367 and Bw453 were the highest preference of R. rattus, whereas the lowest were At373, Bg300, Bw400, At362, Bw351, At354, At311, and Bg450. It may be due to the different grain sizes and physicochemical and nutritional composition. However, comprehensive studies are necessary before adopting the findings to minimize post-harvest losses by rodents. Published on 2022-07-01 00:00:00
  • Micronutrient Status in Commercial Sugarcane-growing Alfisols at
           Sevanagala, Sri Lanka

    • Abstract: The continuous mono-culture cropping without organic matter addition could deplete the plant available micronutrient reserves in sugarcane-growing soils. This study attempted to investigate the current status of micronutrient availability in commercial sugarcanegrowing Alfisols at Sevanagala, Sri Lanka, and to assess the potential of these soils to become micronutrient deficient in the future. Sugarcane-growing Alfisols at Sevanagala, covering both irrigated and rain-fed cropping systems, and low humic gley (LHG) and reddish-brown earth (RBE) soils were included in this study. A stratified random sampling technique, covering both cropping systems and soil orders, was employed to obtain 263 samples. Soils were analyzed for available Fe, Mn, Zn, and Cu contents using the standard DTPA procedure. Available Fe and Zn contents exhibited significant differences among cropping systems and soil orders. They were significantly higher under RBE soil (75 mg/kg and 1.1 mg/kg in Fe and Mn, respectively) when compared to those under LHG soil (43 mg/kg and 0.6 mg/kg in Fe and Mn, respectively). Available Fe and Mn contents were at sufficient levels for sugarcane in most soils. In contrast, Zn and Cu contents exhibited deficient patches (< 0.1 mg/kg) within the cropping systems and great soil groups in the studied area. The results indicate that appropriate nutrient management practices are required to overcome Zn and Cu deficiencies in Sevanagala sugarcane-growing Alfisols and to mitigate any negative effects on crop yield and quality in the future. Published on 2022-07-01 00:00:00
  • Effect of Marketing Mix Antecedents on Consumer Brand Preference of Milk

    • Abstract: Milk powder has become an essential component of the diet of Sri Lankan consumers. However, recent information related to the contamination of imported milk powder with hazardous elements has made a considerable impact on the preference of milk powder brands among consumers in Sri Lanka. Thereby, the current study aims to explore the effect of selected marketing mix antecedents on consumer brand preference for milk powder. Primary data was collected through an online survey using a Google form-based structured questionnaire. The convenience sampling technique was used in selecting the sample of 100 milk powder consumers. The collected data were analyzed by SMART PLS using partial least squares. The findings revealed that brand personality and country of origin have a significant effect on milk powder brand preference. Furthermore, the study suggests a significant positive influence of brand preference on brand loyalty to milk powder. Moreover, results revealed that consumers prefer domestically produced milk powder brands over imported brands. The findings of this study are of great significance for local milk powder companies and marketing practitioners to implement strategies in order to enhance the availability and marketing of domestically manufactured milk powder. Further, marketers should pay more attention to the brand personality in order to attract more consumers to their respective milk powder brands. Published on 2022-07-01 00:00:00
  • Variation of Water Productivity in Paddy Cultivation within a Tank
           Cascade: A Case Study in Ulagalla, Sri Lanka

    • Abstract: The village tank cascade systems are identified as an important invention of the hydraulic civilization of Sri Lanka. Water productivity is a widely used indicator to measure the performance of these types of systems. A combination of agronomic and socioeconomic factors acts as key elements influencing water productivity in paddy cultivation and its variation. The current study focused on variations and determinants of the upstream and downstream water productivity of a cascade. The study was carried out as a comparative study investigating how the factors affect upstream and downstream water productivity in paddy cultivation separately in the Ulagalla tank cascade system in dry zone Sri Lanka during the Maha and Yala seasons over the years 2019-2021. The study revealed water productivity in paddy cultivation of the upstream and the downstream Ulagalla tank cascade was at satisfactory levels with reference to global standards. Wildlife conflicts, previous crop losses due to natural disasters, and length of the field canal displayed significant, negative relationships with paddy water productivity. Farm size, command area, activities of farmer organization, water head, and availability of lining in the field canal displayed significant, positive relationships with water productivity in paddy cultivation. Published on 2022-07-01 00:00:00
  • Assessment of Mobile-Based Extension Service Usage among Medium- Scale Tea
           Growers in Kandy District, Sri Lanka

    • Abstract: Tea (Camellia sinensis (L.) Kuntze) is one of the major foreign exchange-earning agribusinesses in Sri Lanka, where several mobile-based extension services have emerged to deliver information to tea growers. This study has focused on the present status of mobile-based extension services, perception, and factors affecting the usage of mobile-based extension services by medium-scale tea growers. A survey was conducted over the telephone using a random sample of 56 medium-scale tea growers in the Kandy district. The majority were above 50 years old (77%), and educated up to the advanced level (77%). The majority (59%) were part-time tea growers, having experience (75%) in tea cultivation for ten (10) years or more. All respondents owned mobile phones, and the majority (89%) had smartphone access to the Internet. According to the perception of users, current mobile-based extension services have a problem with knowledge improvement. The results of the Pearson Chi-Square test showed that the awareness of mobile-based extension services was significantly associated with education level χ2 (4, N=56) = 9.951, p< 0.05. The usage showed significant associations with the education level, χ2 (4, N=56) = 12.245, p< 0.05 and Internet access χ2 (2, N=56) = 9.148, p< 0.01. The study concludes the necessity to improve current mobile-based extension services to be more oriented toward technology transfer and develop a single Information and Communication Technology platform to support all media formats for information sharing among medium-scale tea growers. Published on 2022-07-01 00:00:00
  • Wild Rice Species in Sri Lanka as Genetic Resources for Breeding for Brown
           Plant Hopper (Nilaparvata lugens (Stål)) Resistance in Rice

    • Abstract: Brown pl anthopper (BPH) Nilaparvata lugens (Stål.) is considered the most destructive rice pest in rice-growing countries  including Sri Lanka. Resistance breeding considered the most e conomical management strategy, starts by identifying new genetic resources for BPH resistance and comparative analysis wi th existing donors. So far, scientists have identified 38 genes/QTLs responsible for BPH resistance. This study explored the BPH resistance in five wild rice species in Sri Lanka, inc luding the endemic species Oryza rhizomatis. One recommended rice variety; Bg 352, fourteen O. rhizomatis accessions, and one accession from Oryza nivara, Oryza rufipogon,  Oryza granulata and Oryza eichingeri screened by the honeydew test. The experiment was arranged in a complete randomize d design with fifteen replicates with Bg 380 and Ptb 33 as susc eptible and resistant checks respectively. The lower amount of honeydew excretion recorded in all tested O. rhizomatis  accessions, O. nivara, O. granulata, and O. eichingeri accessions  suggested BPH resistance. Both Ptb 33 and O. rufipogon showed a similar level of resistance with low honeydew  excretion. The varieties Bg 352 and Bg 380 showed a high amount of honeydew excretions confirming higher susceptibility to the BPH. Therefore, all fourteen accessions of O. rhizomatis and the selected accessions of O. nivara and O. eichingeri are potential donors for rice breeding programs. Further, th e coding sequences (CDS) of known BPH genes of O. sativa were used as queries to search similar genes in wild rice genomes. The CDS coverage and phylogenetic analysis suggest, of known BPH resistance genes, at least BPH6, BPH9, BPH14-1, and BPH18 are present in O. rhizomatis, O. eichingeri, O. nivara, and O. rufipogon genomes. This information will assist in marker-as sisted breeding attempts. Published on 2022-03-30 00:00:00
  • Prevalence of Bovine Tuberculosis among Cattle and Buffaloes in the
           Central Province of Sri Lanka

    • Abstract: The Bovine tuberculosis (bTB) is a chronic disease condition in dairy cattle and a proven global zoonosis. This study was designed to identify the prevalence of bTB in dairy cattle and buffaloes in the Central Province (CP) of Sri Lanka. Single Intradermal Comparative Cervical Tuberculin (SICCT) test was performed in 20 farms (n=616 cattle and buffaloes) in three districts (NuwaraEliya; NE, Kandy; KN, and Matale; MT) in the CP. Out of the SICCT positive samples, randomly selected serum samples (n=33) of eight farms were subjected to the rapid antibody (Ab) test for further confirmation. Results were evaluated for different risk factors; age, sex, parity, body condition score (BCS), breed, herd origin, reproductive status, herd size, type of management, and duration of farm establishment. The prevalence of bTB among individual cattle and buffaloes was 22% with a 50% herd-level prevalence. In NE and KN, 34% and 19% of individuals showed positive reactions for SICCT, respectively, while all the individuals in MT were negative. There were significant statistical associations (P<0.05) were observed with the prevalence of bTB and BCS, breed, herd origin, and reproductive status; however, age, sex, parity, herd size, type of management, and duration of farm establishment were not statistically significant (P>0.05) with the prevalence of bTB.The conclusion is that, based on the SICCT test, the estimated prevalence of bTB in cattle and buffaloes in the central province of Sri Lanka is relatively high (>20%). The SICCT test could be recommended for the screening of the bTB in cattle and buffaloes in all regions of Sri Lanka to assess the island-wide prevalence of bTB, as this disease carries the risk of transmitting to humans and other susceptible animal species. Published on 2022-03-30 00:00:00
  • The Effect of Nutrient Management and Crop Rotation on Weed Dynamics in
           Rice under Dry Zone (DL1B) of Sri Lanka

    • Abstract: The Integrated weed management (IWM) is widely used to manage we eds in diverse cropping systems. Crop rotation and diverse n utrient management strategies are essential components in IWM. However, the effect of crop rotation and nutrient management systems on weed dynamics in Sri Lankan rice-based cropping systems is scarce. Therefore, an experiment was conducted to identify weed density, biomass, and abundance of two different nutrient management systems (Synthetic; SNM and Integrated; INM) and under rice monoculture and rice-maize rotation during four seasons within the  farm premises of the Faculty of Agriculture, Rajarata University of Sri Lanka. Rice variety Bg300 and maize hybrid Pacific-998 were cultivated. Growing maize in the Yala season increased  weed density and weed biomass compared to growing rice in both crop rotation cycles. During the first cycle, weed den sity was high under INM in the Rice crop phase. However,  in the second cycle, both crop phases (rice and maize) had low weed density under INM compared to SNM. A higher density of  sedges was reported with the crop rotation in the Yala season s, and grasses were dominant in the mono-cropping in both seasons. Grass biomass did not change with the nutrient manageme nt systems, while the biomass of sedges increased with synthetic fertilizer only. High weed density and biomass in maize during the first cycle were substantially reduced in the second cyc le for both nutrient management systems. Overall, reducing chemical fertilizer by 50% and incorporating organic matter, INM, substantially supported weed management in both rice and maize crops. Published on 2022-03-30 00:00:00
  • Evaluation of Clay Brick and Laterite Brick as Low-Cost Adsorbents for the
           Removal of Cd2+ and Pb2+ in Aqueous Solutions

    • Abstract: Adsorption is recognized as a low-cost and effective method for treating C admium and Lead in wastewater. Therefore, this study focu sed on investigating the potential of construction demolition wastes (CDWs), laterite bricks (LB), and clay brick (CB) to re move Cd and Pb in synthetic wastewater. A series of batch a dsorption experiments were conducted to study the adsorption characteristics and capacities. The results revealed that the ma ximum adsorption capacity of CB and LB reached 210.85 mg/g and 210.72 mg/g for Pb2+, respectively. The maximum adsorption capacity of Cd2+ by CB and LB was 4.52 mg/g and  4.51 mg/g. From adsorption isotherms, the Langmuir and Freundlich models fitted well for 0 ≤ Ci ≤ 1000 mg/L of Cd2+ adsorption on both CB and LB. Adsorption of Pb2+ onto CB and LB is well  captured by all isotherm models tested. A similar pattern of adsorption was observed among all particle sizes of CB and LB  (<0.5, 0.5-1.0, and 1.0–2.0 mm), indicating that the particle size  of tested adsorbents is not affecting the adsorption isotherms of Cd2+ and Pb2+. However, the particle size ranges used in this  study lay within a narrower range, which might be the reason  for not showing any difference in adsorption among the different size fractions. Therefore, it is concluded that both CB and  LB are effective and environmentally friendly adsorbents to remove Pb2+ and Cd2+in wastewater. Published on 2022-03-30 00:00:00
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