ahmed.sallam3

أ.د/ أحمد أحمد أحمد سلام

استاذ - أستاذ كيمياء وسمية المبيدات - ورئيس قسم وقاية النبات - كلية الزراعة - جامعة سوهاج

كلية الزراعة

العنوان: الدواخلية - المحلة الكبري - غربية

7

إعجاب
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113

أضيف حديثا
  • المقررات الدراسية 10
  • ملحقات المقررات الدراسية 0
  • واجبات المقررات الدراسية 0
  • المنشورات و المؤلفات 23
  • ساعات مكتبية 1
  • الاعلانات 3
  • عدد الملفات المرفوعه 0
  • كل التنزيلات 0

Jasmonic acid induces resistance to economically important insect pests in winter wheat

2010 | الكلمات المفتاحية Keywords: induced resistance;,
Jasmonic acid induces resistance to economically important insect pests in winter wheat
Abstract BACKGROUND: Insect damage induces chemical changes in plants, and frequently these changes are part of a defensive response to the insect injury. Induced resistance was activated in winter wheat using a foliar application of synthetic jasmonic acid. Field trials were conducted to observe effects of jasmonic acid application on some wheat insects. Two wheat cultivars (Cubus and Tommi) were ... إقراء المزيد

Chemical analysis of mucus from certain land snails under Egyptian conditions

2009 | الكلمات المفتاحية Keywords: Chemical analysis, M,
Chemical analysis of mucus from certain land snails under Egyptian conditions
Abstract The present investigation was carried out to study the chemical analysis of the mucus of three common land snails, Eobania vermiculata, Theba pisana and Monacha obstructa, and identification of the chemical compositions by using GC-MS. Results revealed that several variations in composition were observed between all species. Oxime, methoxy-phenyl and cyclotrisiloxane, hexamethyl were major components found that in three ... إقراء المزيد

Effect of some materials on Sesamia cretica infesting some maize and sorghum varieties

2009 | الكلمات المفتاحية Keywords: Susceptibility, Sesa, Keywords: Susceptibility, Sesa,
Effect of some materials on Sesamia cretica infesting some maize and sorghum varieties
Abstract Field experiments were carried out at the experimental farm of the Faculty of Agriculture, Sohag, South Valley University during two successive seasons, 2002 and 2003, to study the relative susceptibility of some maize and sorghum varieties to infestation by greater sugar cane borers, Sesamia cretica L., and the effect of chemical insecticide (methomyl), microbial insecticide (B.t.) i.e. Agrein, petroleum ... إقراء المزيد

Ecological studies on frit flyOscinella frit (L.) and its control in summer wheat in central Germany

2009 | الكلمات المفتاحية Keywords: Oscinella frit; summ,
Ecological studies on frit flyOscinella frit (L.) and its control in summer wheat in central Germany
Larvae of dipterous stem-borer frit fly _Oscinella frit _(L.) can cause considerable damage in newly sown summer wheat. The numbers of frit flies caught in the water traps were recorded in two peaks on 6th and 13th May 2008. On 6th May, 32, 24 and 16 flies were caught in the blue, white and yellow traps, respectively. The corresponding records ... إقراء المزيد

Repellent, Antifeedent and Toxic Effects of Certain Plant Extracts on Cotton Leafworm, Spodoptera littoralis Boisd.

2009 | الكلمات المفتاحية repellent, , antifeedent, , plant extracts, , Spodoptera littoralis,
Repellent, Antifeedent and Toxic Effects of Certain Plant Extracts on Cotton Leafworm, Spodoptera littoralis Boisd.
Two plants, i.e. Anthemis melanopodia and Artemesia monosperma were tested against the 4th instars larvae of Spodoptera littoralis (Boisd.) under laboratory conditions. Four crude extracts (Hexane, Chloroform, Ethyl acetate and Ethanol) from each of the two plants used were evaluated by two different technique, i.e. residual films and dipping. Results indicated different percentage of mortality in larval depending on the ... إقراء المزيد

Effectiveness of different bio-rational insecticides applied on wheat plants to control cereal aphids

2009 | الكلمات المفتاحية Bio-Restak, Keywords: Bioassay,
Effectiveness of different bio-rational insecticides applied on wheat plants to control cereal aphids
Abstract: Laborstudie zur Wirksamkeit verschiedener Bio-Insektizide auf Blattläuse an Weizen Die Getreideblattläuse Rhopalosiphum padi (L.) und Metopolophium dirhodum (Wlk.), gelten als wichtigste Insekten an Weizen. Die Wirksamkeit von drei botanischen Insektiziden, sowie zwei Pyrethroid-Insektiziden wurde untersucht. Es wurden verschiedene Konzentrationen verwendet, um die Effizienz der getesteten Verbindungen 24, 48 und 72 Stunden nach der Behandlung im Labor zu prüfen. Die ... إقراء المزيد

Determination of profenofos and metalaxyl residues in green onion.

2008 | الكلمات المفتاحية Keywords: Residues; Profenofos,
Determination of profenofos and metalaxyl residues in green onion.
ABSTRACT Profenofos (Selecron 72 % E.C.), and metalaxyl (Ridomil Gold Plus (42.5 % W.P.) were sprayed on field – grown onion plants at the recommended rates of 0.54 and 0.17 Kg. a.i./ Fed., respectively. Commercial products from (Ridomil Gold Plus) contained mixtures of metalaxyl as the active ingredient with low rates of residual protective fungicides, such as copper. Samples were ... إقراء المزيد

INVOLVEMENT OF PARAOXONASE (PON) IN OXIDATIVE STRESS INDUCED BY CHLORPYRIFOS IN ALBINO RATS

2007 | الكلمات المفتاحية Keywords: Organophosphorus ins,
INVOLVEMENT OF PARAOXONASE (PON) IN OXIDATIVE STRESS INDUCED BY CHLORPYRIFOS IN ALBINO RATS
ABSTRACT Organophosphorus insecticides (OPs) exert their toxic effect through inhibition of acetylcholinesterase (AchE). In addition, accumulated evidences indicated that oxidative stress involved in OPs neurotoxicity and cytotoxicity. However, the mechanism underlay OPs induces oxidative stress still so far unclear. Recent reports were focused on the role of paraoxonase (PON), the HDL-associated A-esterase, in the degradation of the oxon form of ... إقراء المزيد

MONITORING OF CERTAIN PESTICIDE RESIDUES AND SOME HEAVY METALS IN FRESH COW'S MILK AT GHARBIA GOVERNORATE, EGYPT

2007 | الكلمات المفتاحية Key words: Pesticides, heavy m,
MONITORING OF CERTAIN PESTICIDE RESIDUES AND SOME HEAVY METALS IN FRESH COW'S MILK AT GHARBIA GOVERNORATE, EGYPT
This monitoring study of 40 samples of cow's milk collected from different locations at Gharbia Governorate during the four different seasons of the years 2005-2006, was conducted to determine the contamination levels of seven pesticide residues including four organophosphorous ( chlorpyrifos, diazinon, dimethoate, and malathion) and three synthetic pyrethroides ( cypermethrin, deltamethrin and fenvelerate), as well as five heavy metals ... إقراء المزيد

Effectiveness of different bio–rational insecticides applied on wheat plants to control cereal aphids

2007 | الكلمات المفتاحية Key words: aphids, bioassay, b,
Effectiveness of different bio–rational insecticides applied on wheat plants to control cereal aphids
The efficacy of range of compounds: three botanical insecticides (NeemAzal T/S, Trifolio S-forte and an extract of Quassia amara L.) and two pyrethroid insecticides, lambda-cyhalothrin (Karate 9.4% S.C) and deltamethrin (Decis 2.8% E.C.) were evaluated to control Rhopalosiphum padi (L.) and Metopolophium dirhodum (Wlk.). Different concentrations were used to study efficiency of the tested compounds on both aphid species 24, ... إقراء المزيد