Naglaa reyad (34 risultati)

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Paperback. Condizione: Brand New. 120 pages. 8.66x5.91x0.28 inches. In Stock.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Paperback. Condizione: Brand New. 192 pages. 8.70x5.98x0.55 inches. In Stock.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. Established seller since 2000.

Condizione: Sehr gut. Zustand: Sehr gut | Sprache: Englisch | Produktart: Bücher | In the past decades, apart from the pyrethrum which has attained international and commercial acclaim due to its high effectiveness and broad spectrum insecticidal activity (repels and kills insects depending on concentration) very few natural insecticides have been developed of particular economic significance among the plants in common use today is the tropical plant Azadirachta indica, popularly known as the neem tree. In India as well as in Nigeria the plant is effectively used to control over 25 different species of insect pests. The activity has been associated with the presence of azadirachtin, which is said to be highest in the kernel than in the leaves and other tissues of the plant. The effectiveness of nine insecticidal species of Chineese origin has been compared with synthetic insecticides against 40 species of insects. Three of the plants Milletia pachycarpa Benth, Trpterygium Forrestii Loes and Rhododendron molle G. Don were studied in detail. The finely ground powder when applied as spray in suspension or as dust were highly active against aphids, pentatomids and leaf-beetles as well as against caterpillars, body lice and plant lice.…

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Abdel-Raheem MohamedProf. Mohamed Abdel-raheem, Pests & Plant Protection DepartmentAgricultural and Biological Research DivisionNational Research Centre,Assoc. Prof. Ibrahim Abd El-Rahman, Faculty of Agriculture,Al-Azhar University . …

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The continuous increase in the agricultural plot of land in Egypt is a strategic and economic objective and a real challenge for the the different governments in their efforts to expand. The widsprewad use of insecticides induced heritable changes in the insect pests.The fundamental aspects of population dynamics of pest species in the ecosystem are directly affected. Natural enimes population and wildlife species are hardly decreased as a result of intensive use of chemical pesticides. In Egypt, many pesticides became virtually ineffective against pests as a result of insects building resistance against these chemicals. The relationship between pesticide residues and the human teratogenic and carcinogenic effect is one of the most destructive results of the extensive use of chemicals pesticides.…

Condizione: New. Print on Demand.

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Abdel-Raheem MohamedAssoc. Prof. Mohamed Abdel-Raheem Ali Abdel-RaheemAssociated Professor of Pests and Plant Protection Department Agricultural & Biological Research Division. National Research Centre - Cairo- Egypt.Dr. Ibrahim El-S.…

Condizione: New. PRINT ON DEMAND.

Kartoniert / Broschiert. Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Abdel-Raheem MohamedAssist.Prof.Mohamed Abdel-Raheem Ali Abdel-Raheem, Pests & Plant Protection Department,National Research Centre, Cairo, Egypt, Assist. Prof. Huda Ahmed ALghamdiDepartment of Biology, Faculty of Sciences, King Kha. …

Condizione: New. Print on Demand.

Condizione: New. Print on Demand.

Condizione: New. Print on Demand.

Condizione: New. Print on Demand.