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Genetic particularities of the population of causal agent of barley powdery mildew Blumeria graminis f.sp. hordei in Latvia
2002
Kokina, I. (University of Daugavpils (Latvia)) | Araja, I. | Rasals, I.
Evaluation of virulences of Blumeria graminis f.sp. hordei was started in Latvia in 1981, first in the Baltic States. Until 1994 the observations were carried out only in the central part of Latvia - Salaspils. As the climatic factors and the used barley varieties in various parts of Latvia are different, in 1995 we started regular observations of the particularities of the genetic structure of the pathogen population also in Daugavpils. The aim of this investigation was to detect particularities of the genetic structure of the pathogen population in different parts of Latvia in 1996-2000.
Показать больше [+] Меньше [-]Sigatoka control in Guadeloupe
1987
Bureau, E. (Centre de Cooperation International en Recherche Agronomique pour le Developpement, Belle-Eau, Guadeloupe. Institut de Recherches sur les Fruits et Agrumes. Station de Neufchateau)
The strategy is preventative based on a climatic forecasting system which receives data from 14 agroclimatic stations, complemented by biological assessments. The method used is termed 'state of evolution', an expression of the speed of disease development which varies with inoculum potential and climatic conditions. Benzimidazole and sterol-inhibiting fungicides are applied in rotation
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