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IJSTR >> Volume 7 - Issue 3, March 2018 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

A Survey Of The Weed Flora In Garlic (Allium Sativum L.) And Onion (Allium Cepa L.) In Dongola Area, Northern State, Sudan

[Full Text]



Mukhtar Abdel Aziz Mohamed , Ashwag Ahmed Mohammed, Amal Abdel Haleem Nasur



Garlic; onion; weeds; weed survey



A weed survey was carried out in seven hamlets in Dongola area namely:, Eldoum Elawazma, El Selaim basin, Elatroona, Irtidi, Elmasakeen, Kawa and Agja during the winter season of 2015/2016 to determine the most common and prevalent weed species associated with garlic (Allium sativum L.) and onion (Allium cepa L.). For each crop, a stratified random sampling procedure was adopted, whereby, each hamlet was divided into fields of which 10 were randomly selected. Number of individual weed species was determined in 10 quadrates each 1 m2. The field density, field frequency, field uniformity, relative field density, relative field frequency, relative field uniformity and relative abundance of the species were determined. Data revealed the presence of 26 species of annual and perennial weeds belonging to 15 families in garlic and 28 species belonging to 15 families in onion. The highest number of species occurred in Elmasakeen and Irtidi hamlets whilst the lowest was recorded in Kawa hamlet in both crops. In all parameters measured, the dominant weed species prevailed at higher values in garlic than in onion. Sinapis arvensis, Cynodon dactylon, Malva palviflora, Convolvulus arvensis, Chenopodium album and Sorghum arundinaceum displayed the highest relative abundance in both crops. Trigonella hamosa also occurred at high relative abundance in onion. Species with moderate relative abundance in garlic included Cyperus rotundus, T. hamosa, Eruca sativa, Chenopodium murale and Sinapis alba. Whilst C. murale, Datura stramonium, Gynandropsis gynandra, E. sativa, Sonchus oleraceus and Amaranthus graecizans were moderately abundant in onion. The other species occurred in few hamlets and exhibited low to very low relative abundance in both crops.



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