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Effect of Dust Mite Oligonychusafrasiaticus (McG.) (Acari: Tetranychidae) on the some Natural Characters of fruits of date palm Phoenix dactyliferaL. (Zahdivariety)Before and After AcaricidesAmitraz sprayer. | ||
| journal of kerbala university | ||
| Article 1, Volume 7, Issue 3, 2011, Pages 930-936 PDF (0 K) | ||
| Abstract | ||
| The dust mite Oligonychusafrasiaticus(McG.) (Acar: Tetranychidae) is an important pest of the date palm Phoenix dactylifera L. in the Asia and Africa. This experiment carried out in the Agricultural Collage fields - Karbala University -Hussainyia region , for study the effect the dust mite Oligonychusafrasiaticus(McG.)on the some natural characters of fruits of date palm Phoenix dactylifera L. (Zahdi variety) before and after Amitraz sprayer during the growing season of 2011 and 2012 , respectively . The results of this study , the highest mean of individuals was 22.5 mites 10 fruits/ cluster before Amitraz sprayer during season 2011, meanwhile , the highestmean was 13.6 / 10 fruits /cluster after Amitraz sprayer during season 2012 . therefore , the population density declined gradually after Amitrazsprayer was effected on the some natural characters which was studied in this research as (length (cm) , width (cm) , length: width (fruit form) , weight (g) , size (cm3) , thickness (mm) of fruits of date palm and dry weight of 100 grams of fruits (without cup and seeds). | ||
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