Muna ibrahim jassem (71 risultati)

Condizione: New.

Condizione: New. In English.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

Condizione: New.

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Condizione: New.

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Condizione: New. Print on Demand.

Condizione: New. Print on Demand.

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Condizione: New. PRINT ON DEMAND.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 244 pp. Englisch.

Paperback. Condizione: new. Paperback. Breeding is the most widely used and most effective method used to control plant disease. This chapter highlights some plant breeding strategies used to control plant diseases. Several breeding strategies have been used for disease control depending upon the types of sources of resistance available and the nature of the pathogen.Sequential release strategy uses one resistance gene in agricultural production of the crop at any given time, and the virulence-gene composition of the pathogen population, especially relative to the resistance gene being used, is monitored annually on a differential series of host genotypes that carry different resistance genes singly or in various combinations. The rotation of cultivars with major genes for resistance is based upon the concept that races of a pathogen indigenous to a cropping area are a result of the presence of major genes for resistance in varieties being grown in the area. This item is printed on demand. Shipping may be from multiple locations in the US or from the UK, depending on stock availability.…

PAP. Condizione: New. New Book. Delivered from our UK warehouse in 4 to 14 business days. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

PAP. Condizione: New. New Book. Shipped from UK. THIS BOOK IS PRINTED ON DEMAND. Established seller since 2000.

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 260 pp. Englisch.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Tens of thousands of natural products have been identified from plants and hundreds of thousands are yet to be isolated and screened for their bioactivities. This large reservoir of organic chemicals is largely untapped or under-tapped for use as pesticides. In this chapter the traditional applications of native plants as pesticidal agents and the results of biological and chemical studies on these plants in the past few decades are examined with a view to assessing their potential use in agriculture and related fields. The factors influencing efficacy, the advantages of and problems associated with the use of plant-based pesticidal products are also discussed. The pesticidal agents that will be dealt with will include insecticides (insect killers including adults, ova, and larvae) insect repellents, antifeedants, molluscicides, fungicides and phytotoxins (herbicides). It must however be stated at this stage that although much work has been done in the past decades to show that indeed plants have the potentials to provide alternative and safe pesticides to replace the synthetic ones not enough work has been done in the area of identifying the active components.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 244 pp. Englisch.…

Condizione: New. Print on Demand.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Breeding is the most widely used and most effective method used to control plant disease. This chapter highlights some plant breeding strategies used to control plant diseases. Several breeding strategies have been used for disease control depending upon the types of sources of resistance available and the nature of the pathogen.Sequential release strategy uses one resistance gene in agricultural production of the crop at any given time, and the virulence-gene composition of the pathogen population, especially relative to the resistance gene being used, is monitored annually on a differential series of host genotypes that carry different resistance genes singly or in various combinations. The rotation of cultivars with major genes for resistance is based upon the concept that races of a pathogen indigenous to a cropping area are a result of the presence of major genes for resistance in varieties being grown in the area.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 260 pp. Englisch.…

Paperback. Condizione: new. Paperback. Breeding is the most widely used and most effective method used to control plant disease. This chapter highlights some plant breeding strategies used to control plant diseases. Several breeding strategies have been used for disease control depending upon the types of sources of resistance available and the nature of the pathogen.Sequential release strategy uses one resistance gene in agricultural production of the crop at any given time, and the virulence-gene composition of the pathogen population, especially relative to the resistance gene being used, is monitored annually on a differential series of host genotypes that carry different resistance genes singly or in various combinations. The rotation of cultivars with major genes for resistance is based upon the concept that races of a pathogen indigenous to a cropping area are a result of the presence of major genes for resistance in varieties being grown in the area. This item is printed on demand. Shipping may be from our UK warehouse or from our Australian or US warehouses, depending on stock availability.…

Condizione: New. Print on Demand.