{"title":"The Incidence and Seventy of Eyespot on Winter Wheat Variety Hereward Grown as a Monocrop and as a Bicrop With White Clover","authors":"M. Khan, M. T. Akram, R. Qadri, Rashid Al-Yahyai","doi":"10.24200/10.24200/JAMS.VOL26ISS1PP1-12","DOIUrl":"https://doi.org/10.24200/10.24200/JAMS.VOL26ISS1PP1-12","url":null,"abstract":"In a three-year field trial, the level of eyespot on cv. Hereward winter wheat was recorded from cereal monoerops and cereal-clover bicrops receiving standard farming practice and reduced levels of input. Disease incidence (for years one, two and three) and severity (years two and three only), increased with each season in all treatments. In the third wheat crop the area under the disease progress curve (AUDPC) for disease incidence (mean of all treatments) was 3.30 times higher than that measured for the first wheat crop. The average AUDPC for disease severity in year three was l.78 times greater than that for year two. In year three the eyespot incidence AUDPC for bicrops was 1.12 times greater than in monocrops. Disease severity AUDPC in year three was MS times greater in bicrops than in monocrops. For all treatments there was a significant correlation between AUDPC and the rate of disease increase. The results are discussed in terms of those factors that are likely to affect eyespot levels within bicrops, especially microclimate changes, spore production on crop residues, and spore dispersal by rain-splash.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"139 1","pages":"29-34"},"PeriodicalIF":0.0,"publicationDate":"2020-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75079119","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":"Fish Consumption and knowledge of Chemical Pollutants among a Sample of Women Who Recently Gave Birth in Tripoli, Libya","authors":"T. Abuhlega, Huria M. Maamar","doi":"10.24200/jams.vol25iss0pp39-47","DOIUrl":"https://doi.org/10.24200/jams.vol25iss0pp39-47","url":null,"abstract":"Fish and fish products are important sources of nutritional elements, especially iodine and unsaturated fatty acids (omega-3). These are essential for pregnant women and their embryos during a pregnancy period. However, women and their embryos may be exposed to chemical pollutants when they consume fish. Therefore, this study aimed to assess the consumption pattern of fish during pre-pregnancy, pregnancy and post-pregnancy periods, and explore the awareness on the chemical pollutants in fish among the women who recently gave birth in Tripoli city, Libya. This study targeted 370 women randomly in Tripoli city and collected data through a face to face questionnaire. The questionnaire consisted of three parts: characteristics of new mothers; consumption of fish, crustaceans, mollusks and canned fish; and knowledge on the importance and risks of eating fish and fish products. The results showed that eating fish, crustaceans, and mollusks once a month was the highest proportion in the three periods with a percentage of 38, 38 and 41%, respectively. Sardine, sea bream and mackerel were the most fish common consumed by new mothers during the three periods. More than half of the mothers did not change the pattern of their consumption of fish, crustaceans and/or mollusks during pregnancy as compared to the pre-pregnancy period and after the birth of their children as compared to the pregnancy period. The canned tuna was the most canned fish consumed by respondents (93%). More than half of mothers realized that eating fish is important for health in general and for pregnant women with a percentage of 58 and 59%, respectively. The results of this study showed that there was a great need to raise the awareness of new mothers about chemical pollutants in fish. Furthermore, effective programs should be adopted by the competent authorities to educate mothers about what types and amounts of fish they should consume during pregnancy and the types that should be avoided.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"25 1","pages":"39-47"},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45109560","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":"Consumers’ Preference and Behaviour Pattern Towards Fresh and Smoked Catfish in Ilorin Metropolis, Nigeria","authors":"W. Jimoh","doi":"10.24200/jams.vol25iss0pp27-38","DOIUrl":"https://doi.org/10.24200/jams.vol25iss0pp27-38","url":null,"abstract":"Consumers’ preference study allows industries to tailor the supply towards the preference of consumers so that market could be optimized for their turn-over and profits. This study investigated consumers’ preference of fresh and smoked catfish in Ilorin Metropolis. A total of 225 questionnaires were administered adopting multi-stage techniques to elicit information from the respondents. The obtained data were subjected to descriptive and inferential statistics. The results showed that majority of the respondents in this study preferred smoked catfish irrespective of their socio-economic profile. The majority of the respondents agreed with the factors used in this study for the preference of fish (i.e. types) and their frequency of eating as their preferred fish. This study showed that only tribe of the respondents showed significant effect (p<0.05) on the respondents’ preferences for whole or chunk fish; and family size, age and religion had significant effect on the frequency of their preferred fish.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"25 1","pages":"27-38"},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46302067","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}
M. Al-Mazroui, Rashid Al-Yahyai, S. Al-Ismaily, A. Kacimov, H. Al-Busaidi
{"title":"Use of Soil-Structured Capillary Barrier can Mitigate the Impact of Saline-Irrigation Water on Marigold Grown Under Field Condition","authors":"M. Al-Mazroui, Rashid Al-Yahyai, S. Al-Ismaily, A. Kacimov, H. Al-Busaidi","doi":"10.24200/jams.vol25iss0pp09-19","DOIUrl":"https://doi.org/10.24200/jams.vol25iss0pp09-19","url":null,"abstract":"Capillary barriers (CBs) as engineered porous composites is novel and promising technology for mitigating salinity and drought stress of plants. This study aimed to imitate a naturally formed CB structure recently discovered in the reservoir bed of Al-Khoud dam at the Governorate of Muscat in northern Oman and to test the impact of this unique CB on mitigating the salinity stress of marigold plants grown under an open field condition. A plot was constructed and divided into “structured” (engineered cascade CB design) and “unstructured” soils and planted with marigold (Tagetes erecta) plants that were subjected to four salinity treatments (control with ECi ≈ 0.6 dS m-1 ; 3 dS m-1; 6 dS m-1; and 9 dS m-1). Plant physiological, vegetative, and reproductive growth parameters were measured in each treatment. The results showed that the structured soil significantly saved irrigation water and reduce salts accumulation. Structured soil improved all vegetative and reproductive plant parameters measured and helped in reducing the effects of salinity stress on the growth and production of the marigold under arid-climate field conditions. The results also showed the capability of structured soil in water saving and improving water use efficiency. This study substantiates a novel method in mitigating salinity problem and in water saving in arid and semi-arid regions, in particular in Oman. Further studies are required to test the use of the engineered cascade CB design with different crops and with alternative (e.g. subsurface) irrigation methods.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"25 1","pages":"09-19"},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48110320","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":"Sideroxylon mascatense: A new crop for high elevation arid climates?","authors":"E. Hopkins, R. A. Yahyai","doi":"10.24200/jams.vol25iss0pp02-08","DOIUrl":"https://doi.org/10.24200/jams.vol25iss0pp02-08","url":null,"abstract":"This paper reviews the existing research on Sideroxylon mascatense, and provides an argument for being considered a fruit crop in cultivated production systems in the Sultanate of Oman and elsewhere. Climate change due to global warming has adverse effects on the agro-ecosystems of mountain regions in marginal climate zones. For example, in the Western Hajar Mountains of Oman, yields of the temperate fruit crops have decreased in recent years as temperature and other climate anomalies have increased. Other fruit-bearing wild plants have also been impacted by extreme weather fluctuations, particularly those that occupy a narrow altitudinal range. One such plant is S. mascatense, a currently underutilized fruiting plant found growing in the wild all through the Middle East and other arid mountainous regions. Two fruiting types of S. mascatense are found in Oman, both of which are seasonally wild harvested by mountain inhabitants and sold in markets as well as along the roadsides. While some specimens exist in cultivated areas, propagation and new plantings are non-existent. Regeneration in the wild is also in decline in Oman, possibly due to climate change. Increasing S. mascatense populations could be achieved via propagation, as well as commercial cultivation, although further research is needed into cropping systems and best practice methods.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"25 1","pages":"02-08"},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45624101","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}
T. S. Aas, T. Ytrestøyl, T. Åsgård, Kristoffer Rist Skoien, M. Alver, J. A. Alfredsen
{"title":"Feed intake in Atlantic salmon fed with or without surface spreading of feed","authors":"T. S. Aas, T. Ytrestøyl, T. Åsgård, Kristoffer Rist Skoien, M. Alver, J. A. Alfredsen","doi":"10.24200/jams.vol25iss0pp20-26","DOIUrl":"https://doi.org/10.24200/jams.vol25iss0pp20-26","url":null,"abstract":"In intensive salmon farming, it is common practice to spread the feed over a large surface area, assuming that spreading of the feed increases feed intake in the fish. However, the impact on the feed pellets during spreading results in feed loss due to pellet breakage. In this study, feed intake, growth and signs of aggressive behavior was compared in salmon fed without or with spreading of the feed on the surface area of the tanks. Atlantic salmon (Salmo salar) with initial body weight 0.6 kg were kept in 3.3 m 3 tanks supplied with sea water (salinity 32 %, mean temperature 11 °C) for one month. The salmon were fed one meal daily, either by dropping the feed from one point, or by spreading the feed over the water surface. Feed intake and growth was measured. Fin damage was given a score at termination of the trial as a measure of competitive behavior during feeding. The relative feed intake (i.e. percent of body weight per day) in salmon fed without spreading or with spreading of the feed was 0.63±0.05 and 0.64±0.02 %, respectively. The growth rate was identical in salmon fed without or with spreading of the feed, and no significant difference in variance in final weight was found. No difference in fin damage for salmon fed without or with spreading of the feed was revealed. The data showed that for the conditions used in this trial, spreading of feed had no influence on feed intake or growth of salmon.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"25 1","pages":"20-26"},"PeriodicalIF":0.0,"publicationDate":"2020-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44433762","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":"First report of Dermatophilus congolensis infection in native Omani cattle.","authors":"M. El-Neweshy, Julanda H. Al Mawly, H. Ali","doi":"10.24200/jams.vol24iss0pp34-38","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp34-38","url":null,"abstract":"Skin lesions were reported in a group of quarantined Omani native cattle for exportation purpose during January 2018. The skin lesions were reported in 17 animals out of 140 and were scattered over the head, neck, back and perineal region of the animals. Lesions varied from paint-brush matted hairs to wart-like lesions that are up to 2 cm in diameter. Skin scraping samples were obtained from the living animals and were directly stained with gram stain. Histologically, there was severe multifocal exudative dermatitis with hyperkeratosis. Dermis was infiltrated with neutrophils, mononuclear cells, and numerous branching filaments coccoid bodies. Bacterial culture on sheep blood agar revealed gray to white, beta hemolytic, raised and irregularly shaped colonies. Gram staining showed gram positive branching filaments with both transverse and longitudinal fragments formed from packs of coccoid cells confined with Dermatophilus congolensis . Animals were treated successfully with 3 doses of intra muscular injection of long-acting oxytetracycline with topical application of antibiotic spray. To the best of our knowledge, this is the first report of dermatophilosis in Omani cattle.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"24 1","pages":"34-38"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46028833","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}
A. A. Ayeloja, F. George, W. Jimoh, S. A. Abdulsalami
{"title":"Effect of processing methods on consumer's acceptability and proximate composition of yellow croaker (Larimichthys polyactis)","authors":"A. A. Ayeloja, F. George, W. Jimoh, S. A. Abdulsalami","doi":"10.24200/jams.vol24iss0pp30-33","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp30-33","url":null,"abstract":"Effect of processing methods on consumer’s acceptability and proximate composition of yellow croaker was investigated. The experiment was completely randomized design where the treatments were the various processing methods employed. 12kg frozen yellow croaker fish were purchased, cut into chunks, divided into 4 groups of 3kg each, each group was salted and then subjected to different processing methods including: sun drying, deep- frying, solar drying and smoking. After processing, the products were subjected to organoleptic assessment using hedonic scale while the proximate composition was determined using standard experimental procedures. The result of this study indicates that the odour and flavour of smoked fish product were significantly (p < 0.01) preferred by consumers above other products. Solar dried fish product had highest percentage crude protein followed by smoked fish product while smoked fish product had the highest crude ash. This study suggests that it is better to process yellow croaker by solar drying and smoking so as to get good nutrients.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"24 1","pages":"30-33"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46349705","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":"Gillnet selectivity of the Indian oil sardine Sardinella longiceps fished in the Sea of Oman","authors":"A. Govender, H. Al-Oufi","doi":"10.24200/jams.vol24iss0pp19-23","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp19-23","url":null,"abstract":"The size selectivity of drift gill-nets for Sardinella longiceps was investigated in the Sea of Oman using a range of nets between 3.3 and 5.7 cm stretched mesh size. All nets had a hanging ratio of 0.5. A total of 1 211 Indian oil sardines were caught in 5 experimental nets, the majority of which were retained by the 3.3, 3.8 and 4.5 cm mesh nets. Peak selectivity was reached at 14.9 cm FL for the 3.3 cm mesh size increasing to 16.9 cm for the 3.8 cm mesh size. The estimated and observed length frequency distributions were unimodal. A log-normal selection function indicated that the highest selectivity was obtained when the length class to mesh size ( l:m ) ratio was 4.4. Sardinella longiceps's relative abundance was estimated to be the highest at 16.4 cm FL, with numbers decreasing beyond this peak. This would indicate that selectivity by gilling is optimal with a mesh size of 3.8 cm with nets having a hanging ratio of 0.5. This mesh size appears to satisfy two criteria: high catch efficiency and protection of juveniles.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"24 1","pages":"19-23"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43674425","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}
N. K. Al-Mezeini, Abdulrahim M. Al-Ismaili, Said M. Tabook
{"title":"Evaluation of Greenhouse Cucumber Production Sustainability in Terms of Energy Use Efficiency","authors":"N. K. Al-Mezeini, Abdulrahim M. Al-Ismaili, Said M. Tabook","doi":"10.24200/jams.vol24iss0pp24-29","DOIUrl":"https://doi.org/10.24200/jams.vol24iss0pp24-29","url":null,"abstract":"Sustainable agricultural production could be assessed through energy-use efficiency (EUE). Thus, this paper aims to evaluate the EUE for cucumber greenhouse production in Oman. Data were obtained by interviewing farmers (face-to-face). Result indicated that total energy inputs (e.g. electricity, water, fertilizers and agrochemicals) and total energy output (cucumber yield) were 1159726.0 MJ ha -1 and 89942.9 MJ ha -1 , respectively. The highest energy consuming input in the greenhouse production was electricity, consuming 88% of total energy input. This indicates that electricity had again the highest impact in cucumber greenhouse production and 99% of electricity goes for cooling the greenhouse. When all energy inputs were classified into its forms; direct (D) and indirect (ID), and renewable (R) and non-renewable (NR), the highest portion of total energy forms in greenhouse cucumber production was for D and NR energy. The EUE and energy productivity (EP) were found to be 0.07 and 0.10 kg MJ -1 , respectively. Energy use in greenhouse cucumber production was inefficient and solar energy need to be implemented to improve cucumber greenhouse sustainability production.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"24 1","pages":"24-29"},"PeriodicalIF":0.0,"publicationDate":"2020-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42086110","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}