Published Papers in Refereed National and International Journals

Published Papers in Refereed National and International Journals

  1. Published papers in refereed national and international journals
  1. Qasem, J. R. (1990). Aqueous extract effect of nettle-leaved goosefoot (Chenopodium murale) on wheat and barley. Research Journal of Aleppo University, 14, 37-53.
  1. Qasem J. R. (1992). Suggested strategy for weed control. The First Arab Symposium for Weed Control in Orchards and Vegetable Fields. Organized by Federation of the Arab Scientific Research Councils. 11-13 October, 1992. Amman- Jordan.
  1. Qasem, J. R. (1992). Allelopathy- A natural mechanism of the relationship between weeds and cultivated crops. The First Arab Symposium for Weed Control in Orchards and Vegetable Fields. Organized by Federation of the Arab Scientific Research Councils. 11-13 October, 1992. Amman, Jordan.
  1. Qasem, J. R. (1992). Nutrient accumulation by weeds and their associated vegetable crops. Journal of Horticultural Science, 67(2), 189-195.
  1. Qasem, J. R. (1992). Nutrient accumulation by weeds and their associated vegetable crops (II). Damascus University Journal, 7(27& 28), 33-54.
  1. Qasem, J. R. (1992). Pigweed (Amaranthus spp.) interference in transplanted tomato (Lycopersicon esculentum). Journal of Horticultural Science, 67(3) , 421-427
  1. Qasem, J. R. (1993). Allelopathic effect of nettle leaved goosefoot (Chenopodium murale) on wheat and barley. Dirasat, 20B (1), 80-94.
  1. Qasem, J. R. (1993). Allelopathic effects of some arable land weeds on wheat. Pakistan Journal of Weed Science Research, 6(1-2) , 46-55.
  1. Qasem, J. R. (1993). Allelopathic effects of some common weed species in grain fields on wheat and barley crops. Dirasat, 20B (7-28).
  1. Qasem, J. R. (1993). Aqueous extract effect of hoary pepperwort (Cardaria draba (L) Desv.) on wheat (Triticum durum L.) and barley (Hordeum vulgare L.). Mu`tah Journal for Research and Studies , 8(3) , 63-79.
  1. Qasem, J. R. (1993). Methods of weed control in wheat crop. The Second Arab Symposium on Weed Control in Field Crops. 18-20 October,1993 . Khartoum, Sudan.
  1. Qasem, J. R. (1993). Root growth, development and nutrient uptake of tomato (Lycopersicon esculentum) and Chenopodium album. Weed Research, 33, 35-42.
  1. Qasem, J. R. (1994). Herbs and medicinal plants as possible sources for agricultural pesticides. Ministry of Higher Education, Damascus, Syria. Page 141-145.
  1. Qasem, J. R. (1994). Allelopathic effects of pigweed (Amaranthus spp.) on barley (Hordeum vulgare) . Dirasat, 21B (3), 101-120.
  1. Qasem, J. R. (1994). Allelopathic effects of white top (Lepidium draba) on wheat and barley. Allelopathy Journal, 1(1), 29-40.
  1. Qasem, J. R. (1994). Competition effect and nutrient accumulation of cabbage (Brassica oleracea var. Capitata) and fat-hen (Chenopodium album). Advances in Horticultural Sciences, 8, 191-194.
  1. Qasem, J. R. (1995). Allelopathic effect of some arable land weeds on wheat (Triticum durum L.), A survey. Dirasat 22B(4), 81-97.
  1. Qasem, J. R. (1995). Allelopathic effect of Amaranthus retroflexus and Chenopodium murale on vegetable crops. Allelopathy Journal, 2(1), 49-66.
  1. Qasem, J. R. (1995). Critical period of weed interference in snap bean (Phaseolus vulgaris). Advances in Horticultural Science, 9, 23-26.
  1. Qasem, J. R. (1995). The allelopathic effects of three Amaranthus spp. (pigweeds) on wheat (Triticum durum). Weed Research, 35 (1), 41-49.
  1. Qasem, J. R. (1996). Aqueous extract effects of some common weed species against certain plant pathogenic fungi. ACTES, 16(2), 11-19.
  1. Qasem, J. R. (1996). Chemical weed control in garlic (Allium sativum L.) in Jordan. Crop Protection, 15, 21-26.
  1. Qasem, J. R. (1996). Fungicidal activity of extracts of Ranunculus asiaticus and other weeds against Fusarium oxysporum f. sp. lycopersici. Annals of Applied Biology, 128, 533-540.
  1. Qasem, J. R. (1996). Fungitoxicity of weed extracts to tomato wilt pathogen (Fusarium oxysporum f. sp. lycopersici). Emirates Journal for Agricultural Sciences, 8, 103-112.
  1. Qasem, J. R. (1996). Weed competition in garlic (Allium sativum L.). Journal of Horticultural Science, 71 (1), 41-48.
  1. Qasem, J. R. (1997). Common herbs in the capital Amman, Their Ecological Importance and Conservation. Department of Gardens. Wild Flowers and Herbs. June 16, 1997. Amman, Jordan.
  1. Qasem, J. R. (1997). Medicinal herbs of Jordan, Species and Their Medicinal use. The Second Arab Congress on Plants and Medicinal Herbs in the Arab World 25-27 November, 1997. Khartoum, Sudan.
  1. Qasem, J.R. (1997). Competitive ability of Amaranthus retroflexus, and Chenopodium murale and its effect on tomato growth. Dirasat 24(1), 96-112.
  1. Qasem, J. R. (1998). Chemical control of branched broomrape (Orobanche ramosa) in glasshouse grown tomato. Crop Protection, 17(8), 625-630.
  1. Qasem, J.R. (1999). Assessment of the natural vegetation in the Jordan Valley. Jordan Valley Authority and The German Technical Cooperation (GTZ). Ministry of Water and Irrigation, Amman, Jordan. 182 pp.
  1. Qasem, J.R. (2001). Allelopathic potential of White top and Syrian sage on vegetable crops. Agronomy Journal 93, 64-71.
  1. Qasem, J.R. (2002). Allelopathic effects of selected medicinal plants on Amaranthus retroflexus and Chenopodium murale. Allelopathy Journal 10, 105-122.
  1. Qasem, J. R. (2002). Plants as Sources of Natural Herbicides Against Branched Broomrape Orobanche ramosa) , Final Report, submitted to the Deanship of Scientific Research, University of Jordan &the Higher Council for Science and Technology, Amman, Jordan.
  1. Qasem, J.R. (2004). Allelopathic plants, Cardaria draba (L.) Desv. Allelopathy Journal, 13 (2), 165-172.
  1. Qasem, J. R. and Abu- Blan, H. A. (1995). Antifungal activity of aqueous extracts from some common weed species. Annals of Applied Biology, 127, 215-219.
  1. Qasem, J. R. and Abu- Blan, H. A. (1996). Fungicidal activity of some common weed extracts against different plant pathogenic fungi. Journal of Phytopathology, 144, 157-161.
  1. Qasem, J. R. and Abu- Irmaileh, B. E. (1983). The competitive effect and chemical control of syrian sage (Salvia syriaca L.) in wheat. Dirasat, 10 (2), 123-128.
  1. Qasem, J. R. and Abu- Irmaileh, B. E. (1985). Allelopathic effect of Salvia syriaca L. (Syrian sage) in wheat. Weed Research, 25, 47-52.
  1. Qasem, J. R. and Al-Jebury, I. S. (2001). Weed control in marjoram (Origanum syriacum L.) under field conditions. Dirasat, 28, 194-207.
  1. Qasem, J.R. and Foy, C.L. (2001). Weed Allelopathy, Its Ecological Impact and Future Prospects. Journal of Crop Production 4, 43-119.
  1. Qasem, J. R. and Hill, T. A. (1989). On difficulties with allelopathy methodology. Weed Research, 29, 345-347.
  1. Qasem, J. R. and Hill, T. A. (1989). Possible role of allelopathy in the competition between tomato, Senecio vulgaris L. and Chenopodium album L. Weed Research, 29, 349-356.
  1. Qasem, J. R. and Hill, T. A. (1993). A comparison of the competitive effects and nutrient accumulation of fat-hen and groundsel. Journal of Plant Nutrition, 16(4), 679-698.
  1. Qasem, J. R. and Hill, T. A. (1993). Effects of the form of nitrogen on the growth and nutrient uptake of tomato, groundsel and fat-hen. Journal of Horticultural Sciences, 68(2), 161-170.
  1. Qasem, J. R. and Hill, T. A. (1993). Nutrient accumulation of tomato (Lycopersicon esculentum), fat-hen (Chenopodium album), and groundsel (Senecio vulgaris) in relation to root characteristics. Dirasat, 20B, 195-207.
  1. Qasem, J. R. and Hill, T. A. (1994). Inter and Intraspecific competition of fat-hen and groundsel. Weed Research, 34 (1), 109-118.
  1. Qasem, J. R. and Hill, T. A. (1995). Growth, development and nutrient accumulation in groundsel (Senecio vulgaris L.) and fat-hen (Chenopodium album L.). Weed Research, 35, 187-196.
  1. Qasem, J. R. and Hill, T. A. (1995). The effect of pot volume and potassium levels on growth of tomato, fat-hen and groundsel. Dirasat, 22 (2), 499-520.
  1. Qasem, J.R. and Hill, T.A. (2003). Competition effects of fat-hen (Chenopodium album L.) and groundsel (Senecio vulgaris L.) on cabbage and lettuce. Dirasat 30, 178-185.
  1. Qasem, J.R. and T.A. Hill. (2003). Shoot/root competition of fat-hen (Chenopodium album) and groundsel (Senecio vulgaris) with tomato and cabbage. Dirasat, 30, 211-219.
  1. Qasem, J. R. and Kasrawi, M. (1995). Variation of resistant to broomrape (Orobanche ramosa) in tomatoes. Euphytica, 81, 109-114.
  1. Qasem, J. R. and Khattari, S. K. (1993). Competition on nutrients between weeds and their associated vegetable crops. Dirasat, 20B (4), 18-32.
  1. Qasem, J. R. and Tell, A. M. (1993). Response of some wheat cultivars to weeding and fertilizer treatments. Dirasat, 20B, 63-74.
  1. Qasem, J. R., Al-Abed, A. S. and Abu- Blan, H. A. (1995). Antifungal activity of Clammy Inula (Inula viscosa L.) on Helminthosporium sativum and Fusarium oxysporum. Phytopathologia Mediterranea, 34, 7-14.
  1. Qasem, J. R. and C. L. Foy. (2001). Chemical weed control and response to competition in marjoram (Origanum syriacum). Proceedings Southern Weed Science Society. 54,77. USA.
  1. Qasem, J. R. (2000). Parasitic weeds of Jordan. Old Dominion University, Norfolk, USA.
  1. Qasem, J.R., Sawwan, J.S., Al-Mattary, A. And Al-Zain, N. (2001). Medicinal plants, Prospects for production in the 100-200 mm rainfall zone for the period of 1995-1998. Jordan Arid Zone Productivity Project. Amman, Jordan.
  1. Qasem, J.R. and Hassan, A. A. (2003). Herbicidal properties of some medicinal plants against Malva sylvestris and Portulaca oleracea. Dirasat, 30(1), 84-100.
  1. Qasem, J.R. (2004). Flora of the Dead Sea. In, The Dead Sea Book, Dar Al-Rai, Publications.
  1. Abu- Irmaileh, B. E. and Qasem, J. R. (1986). Aqueous extract effects of Salvia syriaca L. in various lines of four crops. Dirasat, 13(2), 147-170.
  1. Al-Abed, A. S., Qasem, J. R., and Abu-Blan, H. A. (1993). Antifungal effect of some common wild plant species on certain plant pathogenic fungi. Dirasat, 20B(3), 149-158.
  1. Al-Jebury, I. S. and Qasem, J. R. (2001). Weed competition in marjoram (Origanum syriacum ). Dirasat, 28, 184-193.
  1. Biftu K. N.and J. R. Qasem. (2003). Root and shoot competition between cowpea (Vigna sinensis L.) and redroot pigweed (Amaranthus retroflexus L.) at different levels of phosphorus. Dirasat 30, 338-348.
  1. Hasan A. A. and Qasem, J.R. (1999). Mycotoxic properties of some medicinal plants on two plant pathogenic fungi. Dirasat, 26(1), 15-22.
  1. Mustafa, T. and Qasem, J. R. (1984). Host range of the bean aphid, Aphis fabae Scopoli in Jordan (Homoptera, Aphididae). Entomologica Basiliensia, 9, 48-53.
  1. Obaid, K.A. and Qasem, J.R. (2002). Inhibitory effects of Cardaria draba and Salvia syriaca extracts to certain vegetable crops. Dirasat , 29, 247-259.
  1. Obaid, K.A. and Qasem, J.R. (2005). Phytotoxicity of some common weed species to certain vegetable crops grown in Jordan. Dirasat 32 (1), 10-20.
  1. Obaid, K.A. and Qasem, J.R. (2005). Allelopathic activity of common weed species on vegetable crops grown in Jordan. Allelopathy Journal, 15 (2), 221-236
  1. Qasem, J. R. (2005). Competition effect and chemical control of weeds in onion (Allium cepa L.), in Jordan. Final Report, Deanship of Academic Research, University of Jordan, Amman, Jordan. 57 pp.
  1. Qasem J.R. (2005). Chemical control of weeds in onion (Allium cepa L.). Journal of Horticultural Science and Biotechnology 80 (6), 721-726.
  1. Qasem, J.R. (2005). Critical period of weed competition in onion (Allium cepa L.) In Jordan. Jordan Journal of Agricultural Sciences (JJAS) 1 (1), 32-42.
  1. Qasem, J.R. and Issa, N.N. (2005). Allelopathic effects of squash (Cucurbita pepo L. cv. Scarlette) on certain common weed species in Jordan. Proceedings of the Fourth Congress on Allelopathy, eds. JDI Harper, M An, H. Wu and JH Kent, Charls Strurt University, Wagga Wagga, NSW, Austuralia, 21-26 August, 2005, International Allelopathy Society, pages 258-262.
  1. Qasem, J.R. and C.L.Foy (2006). Selective weed control in Syrian marjoram (Origanum syriacumL.) with oxadiazon and oxyfluorfen herbicides.Weed Technology. 20 (3), 670-676
  1. Qasem J.R. (2006). Chemical weed control in seedbed sown onion (Allium cepa L.) . Crop Protection 25, 618-622.
  1. Qasem J.R. (2006). Host range of the parasitic weed Osyris alba L. in Jordan. Weed Biology and Managemnt 6 (2): 74-78.
  1. Qasem J.R. (2006). The response of onion (Allium cepa L.) plants to fertilizers, weed competition duration and planting times in the central Jordan Valley. Weed Biology and Management, 6 (4): 212-220.
  1. Qasem J.R. (2007). Chemical control of Prosopis farcta (Banks and Sol.) Macbirde in the Jordan Valley. Crop Protection 26, 572-575.
  1. Qasem J.R. (2007). Weed control in Cauliflower (Brassica oleracea var. Botrytis L.) with herbicides. Crop Protection 26, 1013-1020.
  1. Qasem J.R. (2007). Chemical control of wild-oat (Avena sterilis L.) and other weeds in wheat (Triticum durum Desf.) in Jordan. Crop Protection 26, 1315–1324
  1. Qasem J.R. and Foy, C.L. (2007). Screening studies on the host range of branched broomrape (Orobanche ramosa). Journal of Horticultural Science and Biotechnology 82 (6), 885-892.
  1. Qasem J.R. (2007). Allelopathy in plant protection: a review of the last two decades research acheivements under field conditions. Proceedings of International Conference "Role of Alleloapthy in Sustainable Agriculture", (A. Malik and Z. Iqbal eds.), University of Arid Agriculture Rawalpindi, Pakistan, 22-24 March 2007.
  1. Biftu, K. N. and Qasem, J. R.. (2007). Competition between cowpea and redroot pigweed in response to phosphorus and planting density under field conditions.). Journal of Horticultural Science and Biotechnology 82 (6), 893-899.
  1. Sadaqa, E.A., Bawazir, A.A. and Qasem, J.R. (2008). Weed management in onion (Allium cepa L.) grown from seeds. Yemen Journal of Agricultural Research, 25, 51-67.
  1. Sadaqa, E.A., Bawazir, A.A. and Qasem, J.R. (2008). Weed management in transplanted onion (Allium cepa L.) by soil solarization, herbicides and hoeing. Yemen Journal of Agricultural Research, 27, 7-33..
  1. Qasem, J.R. and Issa, N.N. (2008). Possible role of Cucumber (Cucumis sativus l. cv. Iba’) in management of certain common weed species. Dirasat 35, 103-119.
  1. Qasem, J.R. (2008). Dodder (Cuscuta spp.) Occurrence and natural hosts in Jordan. Korean Journal of Weed Science 28 (4), 343-359.
  1. Qasem, J.R. (2009). Parasitic weeds of the Orobanchaceae family and their natural hosts in Jordan. Weed Biology and Management 9 (2), 112-122.
  1. Qasem, J.R. (2009). An updated inventory of mistletoe (Plicosepalus acaciae and Viscum cruciatum) distribution in Jordon, hosts and severity of infestation. Weed Technology, 23, 465-469.
  1. Qasem, J.R. (2009). Weed competition in cauliflower (Brassica oleracea L. var. botrytis) in the Jordan Valley. Scientia Horticulturae 121, 255-259.
  1. Qasem, J.R. (2010). Competitive relationship of cauliflower (Brassica oleracea L. var. Botrytis) and nettle-leaved goosefoot (Chenopodium murale L.) and their differential responses to potassium level. Journal of Plant Nutrition 33, 2135-2147.
  1. Qasem, J.R. (2010). Differences in the allelopathy results from field observation to laboratory and glasshouse experiments. Allelopathy Journal 26 (1), 45-58.
  1. Qasem, J.R. (2010). Allelopathy importance, field application and potential role in pest management: a review. Journal of Agricultural Sciences and Technology, USA 4 (6), 104-120.
  1. Qasem, J.R. and Biftu, K.N. (2010). Growth Analysis and Responses of Cowpea [Vigna Sinensis (L.) Savi Ex Hassk.] and Redroot Pigweed (Amaranthus retroflexus L.), Grown in Pure and Mixed Stands, to Density and Water Stresses. The Open Horticulture Journal 3, 21-30.
  1. Qasem, J.R. (2010). Parasitic flowering plants of cultivated plants in Jordan, the present status and possible management. Pakistan Journal of Weed Science 16(2): 227-239.
  1. Sadaqa E.A., Bawazir A.A. and Qasem J.R. (2010). Allelopathic activity of some common weeds species in onion fields. Allelopathy Journal 26 (2), 175-184.
  1. Qasem, J.R. (2011). Parasitic flowering plants of woody species in Jordan. European Journal of Plant Pathology (2011) 131:143–155, DOI 10.1007/s10658-01-9794-2
  1. Qasem, J.R. (2011). Fungitoxic properties of scarlet pimpernel (Anagallis arvensis) against Helminthosporium sativum and Fusarium oxysporum. Allelopathy Journal 28(2): 251-258
  1. Qasem, J.R. (2011). Matthiola arabica Boiss.: Is it an allelopathic weed?. In: Proceedings of the 6th World Congress on Allelopathy-From Theory to Practice, Shiming Luo, Rensen Zeng, Yuanyuan Song and Xiaoting Liang (Eds.).Pages 96-111, December 15-19, 2011, South China Agricultural University, Guangzhou, China
  1. Qasem, J.R. (2012). Ephedra alte (Joint-Pine), an invasive, problematic weedy species in forestry and fruit tree orchards in Jordan. The Scientific World Journal Volume 2012 (2012), Article ID 971903,10pages doi:10.1100/2012/971903
  1. Qasem, J.R. (2012). Allelopathy in Crop –Weed Interaction, Field Studies. Alleopathy Journal 30(2). 159-176.
  1. Qasem, J.R. (2013). Silverleaf nightshade (Solanum elaeagnifolium Cav.) in the Jordan valley, the most important and dangerous invasive weed of environment in Jordan. Dirasat 39 (1): 1-15. (In Arabic).
  1. Qasem, J.R. (2013). Potential allelopathic effects of Matthiola arabica Boiss. on wheat (Triticum durum L.). Dirasat 39 (1):75-87.
  1. Qasem, J.R. (2013). Silverleaf nightshade in the Jordan Valley. Technical Bulletin 10 pages. University of Jordan Press.
  1. Qasem, J.R. (2013). The parasite, Osyris alba and its hosts in Jordan (in Arabic). The Arab Farmer, no. 40: 33-35.
  1. Al Asasfa M.A, Duwayri M.A, Qasem, J.R. and Al Abdallat, A.M. (2014). Characterization and Assessment of Genetic Diversity of Wild Date Palm (Phoenix dactylifera L.) in Jordan. Jordan Journal of Agricultural Science (Accepted). In English.
  1. Qasem, J.R. (2014). Silverleaf nightshade: one of the danger invasive weeds to ecosystem of some Arab countries. The Arab Farmer, Issue no. 41: 9-14.
  1. Qasem, J.R. (2014). The parasite, Osyris alba, host range and economic danger in Jordan (in Arabic).. Technical Bulletin 8 pages. University of Jordan Press.

b. Books

  1. Qasem, J. R. (1993). Plant Science. Al- Quds Open University Publications. Amman- Jordan. 860 pp.
  1. Qasem, J. R. (1997). Medicinal and Aromatic Plants. Al- Quds Open University Publications . 450 pp.
  1. Qasem, J. R. (2003). Weeds and Their Control. University of Jordan Publications. Amman, Jordan. 628 pp.
  1. Qasem, J. R. (2003). Weeds and Their Control (Laboratory part). University of Jordan Publications. Amman, Jordan. 66 pp.

c. Book chapters

  1. Qasem, J. R. et al. (1999). A preliminary Study of Biodiversity in the Eastern Bank of the River Jordan. Higher Council for Science and Technology.
  1. Qasem, J. R. (1999). Biological activity of corn buttercup (Ranunculus arvensis L.). In, Recent Advances in Allelopathy, A science for the Future. Vol. 1. (F.A. Macias, J.C.G. Galindo, J.M.G. Molinillo and H.G. Gutler, Edts.).Servicio De Publicaciones Universidad De Cadiz, Cadiz, Spain. 287-300.
  1. Qasem, J. R. (1999). Research on allelopathy in Jordan. (Chapter) In , Allelopathy Update. Vol. 1 (S. S. Narwal, Edt.). Science Publishers, Inc. New Hampshire, USA. 221-246.
  1. Qasem, J. R. (2000). Senecio vulgaris. In, Crop Protection Compendium. Wallingford, UK, CAB International.
  1. Qasem, J. R. (2000). Chenopodium murale. In, Crop Protection Compendium. Wallingford, UK, CAB International.
  1. Qasem, J. R. (2000). Cardaria draba . In, Crop Protection Compendium. Wallingford, UK, CAB International.
  1. Qasem, J. R. (2004). Invasive weeds, Cardaria draba . In, Crop Protection Compendium. Wallingford, UK, CAB International.
  1. Qasem, J.R. and Foy, C.L. (2001). Weed allelopathy, its ecological impact and future prospects. In, Allelopathy in Agroecosystem, page 43-119. (R.K. Kohli and H.P. Singh, eds.). Haworth Press, USA.
  1. Qasem, J. R. (2002). Plants as sources of natural herbicides against branched broomrape (Orobanche ramosa L.). In, Alleopathy, From Molecule to Ecosystem, page 153-182. (Manuel J. Reigosa and Nuria Pedrol, eds.). Science Publisher, Inc. Enfield, USA.
  1. Qasem, J.R. (2006). Recent advances in parasitic weed research, an overview. In, Weed Management Handbook, page 627-728 ( H.P. Singh et al., eds.). Haworth Press, USA.
  1. Qasem, J.R. (2006). Parasitic weeds and allelopathy, from the hypothesis to the proof. In, Allelopathy, A Physiological Process with Ecological Implications, page 565- 637 (Manuel J. Reigosa and Nuria Pedrol, and Luis Gonzalez eds.) Springer, The Netherlands.
  1. Qasem, J.R. (2007). Allelopathic activity of white rocket (Diplotaxis erucoides ). In: Allelopathy: New Concepts and Methodology, Page 139-163. (Fujii, Y. and Hiradate, S. eds.), Science Publishers, NH, USA. ].
  1. Jamal R. Qasem (2011). Herbicides Applications: Problems and Considerations, Herbicides and Environment, Andreas Kortekamp (Ed.), ISBN: 978-953-307-476-4, InTech, Available from:
  1. Qasem, J.R. (2011).Weed Management in Wheat. In: Wheat: Genetics, Crops and Food Production. Agriculture Issues and Policies. Maria T. Almeida (ed.), Pp. 1-79, Nova Science Publishers, USA. ISBN: 978-1-61209-307-9
  1. Qasem, J.R. (2013). Applied Allelopathy in weed management, an update. In Allelopathy: Current trends and future applications. Z.A. Cheema, M. Farooq and Abdul Wahid (Eds.). pp. 251-297, Springer, Netherlans.
  1. Qasem, J.R. (2013). Herbicide Resistant Weeds: The Technology and Weed Management. In: Herbicides - Current Research and Case Studies in Use. Andrew J. Price and Jessica A. Kelton eds., ISBN 978-953-51-1112-2, Hard cover, 652 pages, Publisher: InTech, Chapters published June 12, 2013 under CC BY 3.0 license. Pages445-471.

d. Research papers presented in Conference

  1. Qasem, J.R. and B. E. Abu-Irmaileh. (1982). The competitive and Allelopathic effects and chemical control of Syrian sage (Salvia syriaca L.) in wheat. First Scientific Meeting of Arab Society for Plant Protection. November, 22-25, 1982. Abstract no. 18.
  1. Qasem, J. R. and T. A. Hill. (1989). Possible role of allelopathy in the competition between tomato, Senecio vulgaris L. and Chenopodium murale L. First Jordanian Conference of Crop Protection. 3-5 October, 1989. Faculty of Agriculture, University of Jordan, Amman, Jordan. Abstract no. 59.
  1. Qasem, J.R. (1991). Growth, development and nutrient uptake of tomato (Lycopersicon esculentum) and fat-hen (Chenopodium album). Fourth Arab Congress of Plant Protection. 1-5 December, 1991. Cairo, Egypt.
  1. Qasem J. R. (1992). Suggested strategy for weed control. The First Arab Symposium for Weed Control in Orchards and Vegetable Fields. Organized by Federation of the Arab Scientific Research Councils. 11-13 October , 1992 . Amman- Jordan.
  1. Qasem, J. R. (1992). Allelopathy- A natural mechanism of the relationship between weeds and cultivated crops. The First Arab Symposium for Weed Control in Orchards .and Vegetable Fields. Organized by Federation of the Arab Scientific Research Councils. 11-13 October, 1992. Amman, Jordan.
  1. Qasem, J. R. (1992). Herbs and medicinal plants as a possible sources of natural pesticides. The First Arab Congress on Medicinal Plants as Clinical Drugs Based on the Recent Scientific Methods. 5-8 October, 1992 . Damascus, Syria.
  1. Qasem, J. R. (1993). Weed control in wheat. The Second Arab Scientific Symposium on Weed Control in Field Crops. 19-20 October, 1993.