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Register a new userتقييم فاعلية بعض مبيدات الأعشاب ومواعيد رشها في مكافحة الزل Phragmites communis Trin في قنوات الصرف بدير الزور
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جامعة الفرات رسالة ماجستير
Publication date
2012
fields
Agricultural Engineering
and research's language is
العربية
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تقييم فاعلية بعض مبيدات الأعشاب ومواعيد رشها في مكافحة الزل Phragmites communis Trin في قنوات الصرف بدير الزور
No English abstract
References used
السحيباني ناصر 1991 الحشائش ومكافحتها مكتبة الأنجلو المصرية القاهرة 347ص
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The experiments were carried out at Deir Ezzor research Center , Salou Research Station during the growing season 2008 and 2009 . The cotton variety Deir Ezzor 22 was grown and the soil was treated, one day before cultivation date.
تأثير الكثافة النباتية وتسوية التربة في إنتاجية ونوعية بعض أصناف الشوندر السكري المزروعة في العروة الصيفية بدير الزور
This study aimed to study the accumulative abilities Ricnius Communis & Phragmites Communis for lead and cadmium. This plants are native near the RMAILAH river in JABLAH city.
The plants samples were collected from leafs, wood, and bark for plant sp
ecies, the soil samples were taken at (0-20)cm depth. Concentration of heavy metals were determined in soils and plants with "Atomic Absorption Spectrophotometer"
Our results showed that the amounts of pb in the soil samples were 61.89ppm. The concentrations of lead pb in the parts of Ricnius Communis range between 4.3 to 5.81ppm; in the parts of Phragmites Communis range between 1.46 to 2.32ppm. According to statistics analysis Ricnius leaves surpass Ricnius wood and bark with accumulate lead; and Ricnius surpass Phragmites with accumulate lead too.
Our results showed that the amounts of cd in the soil samples were 3.081ppm. The concentrations of Cd in the parts of Ricnius Communis range between 0.031 to 0.061ppm; in the parts of Phragmites Communis range between 0.031-0.055ppm. According to statistics analysis there is no moral differences between Ricnius and Phragmites with accumulate cadmium.
تزرع في سورية ١٠ سلالات من القمح القاسي أو الطري في حقول مروية أو بعلية و تستخدم
مبيدات الأعشاب ومنها خليط من -D + MCPA ٢،٤ في كل موسم زراعي لمكافحة الأعشاب الضارة التي
ترافق محصول القمح.
نستخلص من هذه النتائج أن على المهتمين بانتخاب سلالات القمح
إعطاء هذا الجانب من صفات
السلالة قدرًا من الأهمية لأن هذه السلالات سوف تتعرض في الحقل لاستخدام هذه المبيدات.
Field trails were conducted in February, 2005 to evaluate the field
performance of three rodenticides in controlling colonies of the Libyan Jird,
Meriones libycus at semi arid lands east to Damascus and Homs cities. 2% Zinc
Phosphide wheat baits,
0.005% Brodifacoum ready to use baits and Aluminum
Phosphide (Fumigant) were tested. The active burrows were treated by
inserting ten grams of the poisoned baits or by one tablet (3g) of Aluminume
Phosphide.
The efficacy of treatments was calculated depending on the number of
active burrows before and after treatment. Obvious reduction in burrowing
activity was registered in Zinc Phosphide, Brodifacoum, Aluminume Phosphide
treatments; 95.9%, 91.9% and 81.9% respectively, in comparison to 18.5% in
the untreated control. The difference between Zinc Phosphide and Aluminume
Phosphide efficacy was not significant, while it was significant between these
two rodenticides and Brodifacoum.
Symptoms of direct poisoning were observed on mammalian predators in
the study area after 24 hours of Zinc Phosphide treatment, indicating serious
damage to the non target species of rodents' natural enemies in spite of the high
potency of this acute rodenticide.
The results suggest that inserting one gram only of Zinc Phosphide baits in
each active burrow, seems to be adequate to achieve high rate of efficacy
against the Libyan jird in comparison to the efficacy achieved when 10 grams
were inserted.
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