Journal of Agricultural and Marine Sciences最新文献_第9页

Estimating leaching requirements for barley growth under saline irrigation. 盐渍灌溉条件下大麦生长的淋失需要量估算。

Journal of Agricultural and Marine Sciences Pub Date : 2010-01-01 DOI: 10.24200/JAMS.VOL17ISS0PP1-8

A. Al-Busaidi, J. Rabeea, Mushtaque Ahmed, S. Al-Rawahy

{"title":"Estimating leaching requirements for barley growth under saline irrigation.","authors":"A. Al-Busaidi, J. Rabeea, Mushtaque Ahmed, S. Al-Rawahy","doi":"10.24200/JAMS.VOL17ISS0PP1-8","DOIUrl":"https://doi.org/10.24200/JAMS.VOL17ISS0PP1-8","url":null,"abstract":"The utilization of marginal water resources for agriculture is receiving considerable attention. The lands irrigated with saline water are required to reduce salt accumulations through leaching and/or drainage practices. A field experiment was carried out to investigate the effect of saline irrigation and leaching fraction on barley ( Hordeum vulgare L.) growth. For this purpose highly saline water was diluted to the salinity levels of 3, 6 and 9 dS m -1 and applied by drip irrigation at 0.0, 0.15, 0.20 and 0.25 leaching fractions (LF). The results of the experiment showed that both quantity and quality of water regulated salts distribution within the soil in the following manner: a) the salts were found higher near or immediate below the soil surface; b) an enhanced LF carried more salts down the soil horizon but there was no significant difference in plant yield between different treatments of leaching fractions. Salinity of water significantly impaired barley growth. The good drainage of sandy soil enhanced the leaching process and minimized the differences between leaching fractions. The increment in saline treatments (3, 6 and 9 dS m -1 ) added more salts and stressed plant growth. However, the conjunctive use of marginal water at proportional LF could be effective in enhancing the yield potential of crops in water-scarce areas.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"121 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69288671","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}

引用次数: 0

Carcass Characteristics of the Libyan Purebred Mahali Goat and their Crosses with Damascus and Morcia Granada Goats 利比亚纯种马哈里山羊的胴体特性及其与大马士革山羊和莫西亚格拉纳达山羊的杂交

Journal of Agricultural and Marine Sciences Pub Date : 2010-01-01 DOI: 10.24200/JAMS.VOL15ISS0PP21-27

A. Ahtash, A. Biala, A. Magid, H. M. Marhoun

引用次数: 4

Live weight changes and their relationship with the ovarian status of maiden fat-tailed barbarine ewes. 粗尾母羊的活重变化及其与卵巢状态的关系。

Journal of Agricultural and Marine Sciences Pub Date : 2010-01-01 DOI: 10.24200/JAMS.VOL15ISS0PP41-46

I. B. Salem, M. Rekik, M. B. Hamouda, N. Lassoued

{"title":"Live weight changes and their relationship with the ovarian status of maiden fat-tailed barbarine ewes.","authors":"I. B. Salem, M. Rekik, M. B. Hamouda, N. Lassoued","doi":"10.24200/JAMS.VOL15ISS0PP41-46","DOIUrl":"https://doi.org/10.24200/JAMS.VOL15ISS0PP41-46","url":null,"abstract":"The� current� study� assessed� the� effect� of� the� pattern� of� live� weight� change� on� the� ovarian� function� of� maiden� Barbarine� ewes� at� approximately� 1� year� of� age.� For� this� purpose,� a� total� of� 171� weaned� ewe� lambs� (mean� live� weight� ±� s.d.� 34.7±3.07� kg� and� mean� age� ±� SD� 196±10� days� at� weaning)� were� selected� for� the� experiment.� Adjustment� of� live� weight� variation� was� used.� Based� on� the� slope� of� the� curve,� animals� were� grouped� into� three� classes� LWCI� (n=46),� LWCII� (n=91)� and� LWCIII� (n=34)� with� live� weight� loss� being� highest� in� LWCI� and� lowest� in� LWCIII.� Following� laparoscopy� at� 13� months� of� age,� the� proportion� of� ewe� lambs� found� cycling� in� LWCIII� (85.3%)� was� higher� in� comparison� to� animals� in� LWCI� (43.4%�퀃� P<0.001)� and� tended� to� be� superior� to� those� in� LWCII� (61.5%�퀃�","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"15 1","pages":"41-46"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69288201","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}

引用次数: 0

Meat production potential of small ruminants under the arid and semi-arid conditions of Pakistan. 巴基斯坦干旱和半干旱条件下小型反刍动物的肉类生产潜力。

Journal of Agricultural and Marine Sciences Pub Date : 2010-01-01 DOI: 10.24200/JAMS.VOL15ISS0PP33-39

Mohamed Fatah Ullah Khan, F. Ashfaq

引用次数: 10

Effect of Diet Quality and Housing on Water Status in Sudanese Desert Sheep and Goats 苏丹沙漠绵羊和山羊日粮品质和笼舍对水分状况的影响

Journal of Agricultural and Marine Sciences Pub Date : 2010-01-01 DOI: 10.24200/JAMS.VOL15ISS0PP29-32

H. M. Elhadi

{"title":"Effect of Diet Quality and Housing on Water Status in Sudanese Desert Sheep and Goats","authors":"H. M. Elhadi","doi":"10.24200/JAMS.VOL15ISS0PP29-32","DOIUrl":"https://doi.org/10.24200/JAMS.VOL15ISS0PP29-32","url":null,"abstract":"Two independent experiments were carried out using Sudanese Desert sheep and goats to investigate water metabolism (total body water, TBW and water turnover, WTO) and internal water compartments using radioactive water (tritium), under natural grazing conditions in a semi-desert area. The second trial was carried out on confined sheep, fed high (Lucerne) and poor quality (desert grasses) diets. The body weights, rectal temperature and water parameters were monitored in both trials and species under the Sudanese summer conditions. The grazing animal’s body weights were reduced compared to confined ones. Hyperthermia was pronounced in goats (9%) compared to sheep (6%). The goat hyperthermia was associated with high water turnover, indicating the poor heat tolerance of this species of high evaporative cooling. The confined animals, however, maintained their body weights and did not show signs of hyperthermia. The poor diet (desert grasses) was associated with reduced water intake whereas the Lucerne was associated with high water turnover and high feed intake. The extracelluar compartment (ECV) was higher with the poor diet but was lower than the grazing group. The intracellular compartment (ICV) was higher in the Lucerne group. The study indicated that Sudanese Desert sheep are more tolerant to high temperatures and grazing system than goats.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"15 1","pages":"29-32"},"PeriodicalIF":0.0,"publicationDate":"2010-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69288664","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}

引用次数: 0

Density variation of different shaped food particulates in fluid bed drying : Empirical Models 不同形状食物颗粒在流化床干燥中的密度变化:经验模型

Journal of Agricultural and Marine Sciences Pub Date : 2009-01-01 DOI: 10.24200/JAMS.VOL14ISS0PP27-34

W. Senadeera

引用次数: 4

Revenue determinants for Abu-Dhabi fishermen and assessment of input allocative efficiency. 阿布扎比渔民的收入决定因素及投入分配效率评估。

Journal of Agricultural and Marine Sciences Pub Date : 2009-01-01 DOI: 10.24200/JAMS.VOL14ISS0PP17-25

S. Sherif, M. Gheblawi

{"title":"Revenue determinants for Abu-Dhabi fishermen and assessment of input allocative efficiency.","authors":"S. Sherif, M. Gheblawi","doi":"10.24200/JAMS.VOL14ISS0PP17-25","DOIUrl":"https://doi.org/10.24200/JAMS.VOL14ISS0PP17-25","url":null,"abstract":"This study examined the fishing industry in Abu Dhabi, the main fish-producing Emirate in the UAE, from the fishermen’s point of view. Marginal analysis was used to identify the most prominent fishing-revenue determinants along with assessing the allocative (price) efficiency of inputs used. A log-log total value product (TVP) function was estimated for a representative cross-section random sample of 131 Abu-Dhabi fishermen. This revealed that (1) labor, fishing effort, boat capacity, boat boarding expenses, and expenditures on oil and lubricants are the five main determinants of total revenue for the individual fishermen in Abu Dhabi; (2) boat-purchase price constituted a huge investment cost to fishermen distributed over the lifetime of the boat; although only one-third of fishermen acquire loans for this purpose; (3) the only type of records fishermen keep were those pertinent to monthly revenues; and (4) price efficiency is found not to be achieved for any of the five prominent inputs that have great impact on total fishermen’s revenues, as three inputs were found to be under-utilized in varying degrees, whereas two were found to be significantly over-utilized.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"14 1","pages":"17-25"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69287406","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}

引用次数: 2

Adoption of E-Commerce in the Agricultural and Fisheries Business Sector in Oman 阿曼农业和渔业业务部门采用电子商务

Journal of Agricultural and Marine Sciences Pub Date : 2009-01-01 DOI: 10.24200/JAMS.VOL14ISS0PP41-47

Zahran Al-Busaidi, H. Kotagama, H. Boughanmi, Sunil Dharmapala, J. Waelti

{"title":"Adoption of E-Commerce in the Agricultural and Fisheries Business Sector in Oman","authors":"Zahran Al-Busaidi, H. Kotagama, H. Boughanmi, Sunil Dharmapala, J. Waelti","doi":"10.24200/JAMS.VOL14ISS0PP41-47","DOIUrl":"https://doi.org/10.24200/JAMS.VOL14ISS0PP41-47","url":null,"abstract":"Small and Medium Businesses (SMB) have substantial potential to contribute to the growth of an economy through adoption of business related Information Technology. The Agricultural and Food Business (AFB) sector in Oman is dominated by SMBs. Factors influencing the adoption of e-commerce in the AFB sector in Oman were analyzed. The main hypothesis was that scale of the business influenced the adoption of e-commerce. Data were obtained from a random sample (n = 31) of AFBs in Oman and was analyzed using a Probit regression model. The dependent variable was whether the firm had a website, a proxy measure of adoption of e-commerce. The main independent variables were the scale of the business (measured by number of employees) and the scope of the business (international or national) and of variables related to manager’s perception of benefits of adopting e-commerce. It was found that 94% of AFBs in Oman used computers and about 52% of those had websites. The R-squared, of the estimated Probit regression model was 0.65. The hypothesis that scale of the business influenced the adoption of e-commerce was not rejected, as the coefficient of the business scale variable was statistically significant (t = 2.5, n = 31). The likelihood of adoption increases with increased scale of the business. On the converse this suggests that the likelihood of adoption of e-commerce by small and medium businesses is lower. Given the importance of small and medium businesses in the development of particularly the AFB sector of Oman, policy maker would have to promote and provide incentives to adopt e-commerce by SMBs.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"14 1","pages":"41-47"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69287773","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}

引用次数: 1

Pesticide Resistance in Stored-Product Insects and Alternative Biorational Management: A Brief Review 储品昆虫的农药抗性及替代性生物管理综述

Journal of Agricultural and Marine Sciences Pub Date : 2009-01-01 DOI: 10.24200/JAMS.VOL14ISS0PP9-15

F. Talukder

引用次数: 27

Transport Modeling Analysis to Test the Efficiency of Fish Markets in Oman 阿曼鱼市场效率测试的运输模型分析

Journal of Agricultural and Marine Sciences Pub Date : 2009-01-01 DOI: 10.24200/JAMS.VOL14ISS0PP35-40

K. S. Al-Abri, H. Kotagama, A. Palfreman, H. Boughanmi

{"title":"Transport Modeling Analysis to Test the Efficiency of Fish Markets in Oman","authors":"K. S. Al-Abri, H. Kotagama, A. Palfreman, H. Boughanmi","doi":"10.24200/JAMS.VOL14ISS0PP35-40","DOIUrl":"https://doi.org/10.24200/JAMS.VOL14ISS0PP35-40","url":null,"abstract":"Oman’s fish exports have shown an increasing trend while supplies to the domestic market have declined, despite increased domestic demand caused by population growth and income. This study hypothesized that declining fish supplies to domestic markets were due to inefficiency of the transport function of the fish marketing system in Oman. The hypothesis was tested by comparing the observed prices of several fish species at several markets with optimal prices. The optimal prices were estimated by the dual of a fish transport cost- minimizing linear programming model. Primary data on market prices and transportation costs and quantities transported were gathered through a survey of a sample of fish transporters. The quantity demanded at market sites was estimated using secondary data. The analysis indicated that the differences between the observed prices and the estimated optimal prices were not significantly different showing that the transport function of fish markets in Oman is efficient. This implies that the increasing trend of fish exports vis-a-vis the decreasing trend of supplies to domestic markets is rational and will continue. This may not be considered to be equitable but it is efficient and may have long-term implications for national food security and have an adverse impact on the nutritional and health status of the rural poor population. Policy makers may have to recognize the trade off between the efficiency and equity implications of the fish markets in Oman and make policy decisions accordingly in order to ensure national food security.","PeriodicalId":32106,"journal":{"name":"Journal of Agricultural and Marine Sciences","volume":"14 1","pages":"35-40"},"PeriodicalIF":0.0,"publicationDate":"2009-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69287754","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}

引用次数: 1