National Center for Agriculture Research and Extension


National Center for Agriculture Research and Extension


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Haddad M.,Al - Balqa Applied University | Bani-Hani N.M.,National Center for Agriculture Research and Extension | Al-Tabbal J.A.,Al - Balqa Applied University | Al-Fraihat A.H.,University College of Applied Sciences
Journal of Food, Agriculture and Environment | Year: 2016

Field experiments were conducted to assess the effect of rates of potassium nitrate fertilizer on potato yield and quality in Jordan valley, Jordan, during season 2012–2013. Potato was grown under drip irrigation methods and four potassium nitrate fertilizer doses were applied at 0, 130, 260 and 380 kg ha-1. A significant increase in fresh tuber yield per plant, tuber weight, and tuber yield ha-1with potassium nitrate application at all rate of potassium nitrate was recorded and the highest tuber yield was registered for 380 kg ha-1. Potassium nitrate treatments not only increased the yield and yield components (except tuber number per plant) but also affected the quality parameter of potato tubers (specific gravity, ash, ascorbic acid, protein, carbohydrate and fat), positively. Water use efficiency increased from 3.43 to 4.33 kg m-3using the above mentioned rate of potassium nitrate fertilizer. © 2016, World Food Ltd. and WFL Publishers. All Rights Reserved.

PubMed | National Center for Agriculture Research and Extension, University of Bern, Suez Canal University, Annaba University and 9 more.
Type: Journal Article | Journal: Insect science | Year: 2015

Three hundred and eleven honeybee samples from 12 countries in the Middle East and North Africa (MENA) (Jordan, Lebanon, Syria, Iraq, Egypt, Libya, Tunisia, Algeria, Morocco, Yemen, Palestine, and Sudan) were analyzed for the presence of deformed wing virus (DWV). The prevalence of DWV throughout the MENA region was pervasive, but variable. The highest prevalence was found in Lebanon and Syria, with prevalence dropping in Palestine, Jordan, and Egypt before increasing slightly moving westwards to Algeria and Morocco Phylogenetic analysis of a 194 nucleotide section of the DWV Lp gene did not identify any significant phylogenetic resolution among the samples, although the sequences did show consistent regional clustering, including an interesting geographic gradient from Morocco through North Africa to Jordan and Syria. The sequences revealed several clear variability hotspots in the deduced amino acid sequence, which furthermore showed some patterns of regional identity. Furthermore, the sequence variants from the Middle East and North Africa appear more numerous and diverse than those from Europe.

Adjlane N.,University of Boumerdès | Doumandji S.-E.,Algeria National School of Agronomy | Haddad N.,National Center for Agriculture Research and Extension
Cahiers Agricultures | Year: 2012

Honeybees, in addition to their production of honey, pollinate the flowers of fruit trees and other crops. Any threat to them, whether from pesticides, herbicides or diseases, therefore pose serious consequences not only for beekeeping, but also for agriculture in general. For several years, many beekeepers in Algeria have reported deaths in their apiaries. At present, we lack hard data on the causes of such mortality. In order to provide some answers to this problem, we conducted a field study with beekeepers in mid-northern Algeria. This study is complemented by information from the beekeeping cooperative, the technical institute of livestock and veterinary services department at the Ministry of Agriculture, and the regional laboratories of veterinary medicine. Analysis of the results shows bee diseases mainly represented by the Varroa and bee poisoning by insecticides, as well as ecosystem degradation (loss of honey flora) and climate change. All these factors threaten the local bee and have a negative influence on the production of honey.

PubMed | National Center for Agriculture Research and Extension, University of Boumerdès and Institute Technique des Elevages
Type: Journal Article | Journal: Journal of arthropod-borne diseases | Year: 2016

The Treatment was conducted in one apiary consisting 30 colonies kept in Langstroth hives kind. Oxalic acid dripped directly on bees 5ml of this solution of oxalic acid per lane occupied by a syringe. Three doses were tested: 4.2, 3.2 and 2.1% oxalic acid is 100, 75 and 50 g of oxalic acid dehydrate in one litter of sugar syrup (1water to1 surge) concentration.The percentage of average efficiency obtained for the first dose was 81%, 72.19% for the second dose, and 65% for third one, while the dose of 100 g oxalic acid causes a weakening of honey bee colonies.The experiments revealed that clear variation in the treatment efficiency among colonies that this might be related to brood presence therefore in order to assure the treatment efficiency oxalic acid should be part of a bigger strategy of

Qaryouti M.,National Center for Agriculture Research and Extension | Bani-Hani N.,Soil and Irrigation Researcher NCARE | Abu-Sharar T.M.,University of Jordan | Shnikat I.,Horticulture Researcher NCARE | And 2 more authors.
Scientia Horticulturae | Year: 2015

Raw waste water (RWW) from food industry is rich of organic matter and mineral nutrients, particularly, K and to lesser extents N then P. Such richness is attributed to the nature of some substrates involved in the food processing e.g. molace of sugar beet or sugar cane. These two crops are known to require high amount of K and, thus, to further enrichment of their derivatives with that nutrient. As cost of K fertilizers is relatively high, this experiment was conducted to study the effect of applying RWW on soil fertility, yield quantity and quality of greenhouse cucumber and tomato. Uniform 30-day old cucumber seedlings and 45-day old tomato seedlings were transplanted to two multi-span greenhouses (1000m2) on December 12, 2012, at Dair Alla Research Station in Central Jordan Valley (JV). The transplanted seedlings were subjected to 5 RWW treatments of 75% of the traditional amount of K fertilizer farmers of the JV apply during the growing season, 100% of K of the traditional amount of K-fertilizer of which 25% were applied before transplanting and 75% were applied during the growing season, 125% of the traditional amount of K-fertilizer where 25% were added to the soil before transplanting and 100% were added during the growing season, traditional amounts of N, P and K chemical fertilizers, and traditional amounts of N and P chemical fertilizers only. The results showed that RWW can effectively substitute K-chemical fertilizer and can also improve some soil fertility parameters by the end of the growing season. For example, increases in available K and organic matter in the RWW treated cucumber beds were 25-71% and 2-11%, respectively. Similar increases were reported in the case of tomato beds (7-62% and 7-17%). Such increases corresponded to increases in K uptake by cucumber and tomato plants (30 and 37%, respectively). Calcium uptake was also increased to levels as high as 40 and 34% in both crop cases. Results of this study indicated that the application of Raw Waste Water from Food Industry improve cucumber and tomato performance and soil fertility. © 2015 Elsevier B.V.

Adjlane N.,University of Boumerdès | Haddad N.,National Center for Agriculture Research and Extension | Kechih S.,Laboratoire Of Microbiologie
Journal of Animal and Veterinary Advances | Year: 2014

American foulbrood is a bacterial disease caused by the Gram-positive bacterium Paenibacillus larvae and is the most dangerous disease of the honeybee. The objective of this study is to compare the methods of detection of this bacterium in different products and samples from the hive. The samples of honey bees, wax, pollen and debris were taken from the hive during Spring period of 2013. Different microbiological methods were used for detection of the bacteria. MYPGP the culture medium is used during all the identifications of the bacterium. The results show that the diagnosis of the disease is more effective in samples of honey and bees than the detection of the bacteria in the wax, pollen and debris from the hive. Even in the absence of symptoms of the disease, the bacteria can be detected in honey or bees. © Medwell Journal, 2014.

Jaradat Z.W.,Jordan University of Science and Technology | Al Bzour A.,Jordan University of Science and Technology | Al Bzour A.,King Saud University | Ababneh Q.,Jordan University of Science and Technology | And 4 more authors.
Food and Agricultural Immunology | Year: 2012

Inhalation of olive pollen is a major cause of allergic respiratory diseases in Mediterranean region. Using bags attached to the branches, pollens were collected from 36 olive cultivars grown in Jordan just before bloom. Proteins were extracted from pollens and analysed by SDS-PAGE and immunoblotting using antisera collected from patients with history of olive pollen-allergy. Immunoblot results showed that 25 cultivars contained one or two allergenic proteins in the range of 15-72 kDa with majority of the proteins corresponding to 15-20 kDa, while remainders did not exhibit any allergenic protein. Seven cultivars exhibited three allergenic proteins and only two cultivars exhibited four allergenic proteins and thus, were considered potentially hyperallergenic cultivars. This study highlights the great variability in the antigenic and allergenic composition of Olea europaea pollen extracts which may serve as guidance for selecting the olive tree cultivars that could be planted in urban areas. © 2012 Copyright Taylor and Francis Group, LLC.

Al-Rawashdeh N.,National Center for Agriculture Research and Extension | Al-Sheyab F.,Jordan University of Science and Technology
American Journal of Environmental Sciences | Year: 2014

Organic farming is considered as a mitigation strategy to face adverse effect of climate change and Consumers' increasing their need for safe and quality food has motivated this research study. The olive oil of the Roman olive trees (Landrace) Olea Europea belong to the Oleaceae family growing under organic farming (in the transition period) conditions in Jordan Ajlun area was extracted by traditional method; warming water to the about 60°C and grounded the seeds make as paste then pour in the warmed water then take the oil layer floated at the surface. The oil was analyzed for fatty acids pattern and compared with Romans trees olive oil grown at Burma Agriculture Station which has organic Certificate according to the Japanese Agriculture Standard (JAS) since 2007. The separation patterns of fatty acids were done by Gas Chromatography (GC). Results showed high levels of unsaturated fatty acids, particularly oleic acid (up to 67.49%), linoleic acid (13.31%) and linolenic acid (0.74%) in the oil of Romans trees growing in Ajlun area, while the organic olive oil from the Romans olive trees growing at Burma Station showed 68.88% of oleic acid, 11.73% of linoleic acid and 0.67% of Linolenic acid. The analysis also showed that the palmatic saturated fatty acid was 12.54% at Burma Station compared to 11.82% in Ajlun area. The medicinal value of unsaturated fatty acids play great role for reducing cholesterol rate that was found in high level of Romans olive trees (landrace). © 2014 Science Publication.

Alrababah M.A.,Jordan University of Science and Technology | Al-Horani A.S.,Jordan University of Science and Technology | Alhamad M.N.,Jordan University of Science and Technology | Migdadi H.M.,National Center for Agriculture Research and Extension
Plant Ecology | Year: 2011

The genetic structure of fragmented Aleppo pine (Pinus halepensis Mill.) populations in Jordan was investigated using RAPD markers. The level of within-population polymorphism was low, while differentiation among populations was large, suggesting a low level of gene flow. Population differentiation and genetic distance between populations were not related to geographical distance. Clustering based on multivariate discriminant analysis showed that geographically distant populations clustered together with a high clustering accuracy and strong relationship to rainfall. Results supported that the current population configuration is the result of fragmentation of a once larger and contiguous population due to Holocene conditions exacerbated by increased human disturbance of forest ecosystems. Implications for conservation strategies are discussed. © 2010 Springer Science+Business Media B.V.

Loucif-Ayad W.,Annaba University | Chefrour A.,Annaba University | Algharibeh M.,National Center for Agriculture Research and Extension | Haddad N.,National Center for Agriculture Research and Extension
Phytoparasitica | Year: 2013

Deformed wing virus (DWV) is reported for the first time in honeybee colonies in Algeria. © 2013 Springer Science+Business Media Dordrecht.

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