خيارات البحث
النتائج 1 - 10 من 1,555
Molecular identification of six species of scale insects (Quadraspidiotus sp.) by RAPD-PCR: assessing the field-specificity of pheromone traps
1995
Frey, J.E. | Frey, B. (Swiss Federal Station for Fruit-Growing, Viticulture and Horticulture, CH-8820 Wadenswil, Switzerland)
Possibilities of using some specific pheromones in the forecasting and early warning of the treatements meant to control Noctuid Lepidoptera in cruciferous vegetable crops
1995
Roman, T. | Negru, G. | Bratu, E. (Research Inst. for Vegetable and Flower Growing, Vidra (Romania)) | Oprean, I.
The researches were carried out during the 1988-1994 period, at the RIVFG Vidra. The pheromones studied were M.b. 4 for Mamestra brassicae L., M.t. 3 for Mamestra (Discestra) trifolii Hufn., M.o. for Mamestra oleracea L., M.s. for Mamestra suasa D. et C. and A. g. for Autographa gamma L. and the traps with ultraviolet rays were used as check. The analysis of the data obtained revealed that: the pheromones M.b. 4, M.t. 3, M.o., M.s. and A.g are more effective and their attractiveness is more numerous and better represented. The pheromones M.t. 3, M.o., M.s. and A.g attract very well the Noctuidae Lepidoptera adults, their selectivity reaching, according to their range of action, 96-98 percent for Mamestra trifolii, 59-65 percent for Mamestra oleracea, 78-84 percent for Mamestra suasa and 84-96 percent for Autographa gamma. The pheromones M.b. 4, M.t. 3, M.o., M.s. and A.g. can be used with good results to draw up long term forecasts, but their use for warning treatments is less probable, because of the lack of correlation between the evolution cycles of the numerous Lepidoptera species marking out the genus Mamestra.
اظهر المزيد [+] اقل [-]Comparison of sorbitol transport in excised tissue discs and cortex tissue of intact apple fruit
1995
Berueter, J. | Studer Feusi, M.E. (Swiss Federal Research Station for Fruit-Growing, Viticulture and Horticulture, Waedenswil (Switzerland))
Partners in progress | Growing & testing for healthy poultry | Growing and testing for healthy poultry
1995
Demonstrates salmonella sampling and testing procedures utilized in a recent food quality improvement project on the Delmarva Peninsula.
اظهر المزيد [+] اقل [-]Technical documents for principal species of food vegetable, fruit growing and vegetable growing in Gabon
1995
De Lannoy, Guy
Techniques generales sur les principales cultures vivrieres, fruitieres et maraicheres au Gabon. Renforcement de la liaison recherche-developpement pour la production horticole et agricole
اظهر المزيد [+] اقل [-]Potassium fertilizers and their importance for tobacco growing
1995
Kirov, K. (Institut po Tyutyuna i Tyutyunevite Izdeliya, Plovdiv (Bulgaria))
[Effective method for cucumber growing and prolonged keeping]
1995
Rezneak, M.F.
Organic & compost-based growing media for tree seedling nurseries | Organic and compost-based growing media for tree seedling nurseries
1995
Miller, Joan H. | Jones, Norman
[Latvia soils and their suitability for growing field crops]
1995
Stikans, J. (Latvia)
The development process of soils in different regions of Latvia is described. The physical and chemical composition of the soil types as well as their characteristic features are analysed. The suitability of certain soils for the cultivation of field crops is discussed. Regions having the most fertile as well as the least fertile soils are pointed out. The importance of choosing the right field crops for a definite soil type is emphasized.
اظهر المزيد [+] اقل [-]Energy sources and levels for growing rabbits in subtropics
1995
Abdalla, M.A.
