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Changes in virulence frequencies and higher fitness of simple pathotypes in the Czech population of Blumeria graminis f.sp. hordei
barley powdery mildew Hordeum vulgare population diversity specific resistances unnecessary virulences
2015/7/28
The employment of specific genes, which determine host resistance to avirulent pathotypes of the pathogen, is not recommended for protecting barley against powdery mildew (Blumeria graminis f.sp. hord...
Disturbance-induced changes in the plant biomass in forests near Plešné and Čertovo Lakes
aboveground biomass Picea abies forest stand damage Vaccinium myrtillus
2015/5/6
Two forested catchments in the Bohemian Forest (Šumava Mts.) were investigated according to the species composition of herb layer and aboveground plant biomass. The bark-beetle gradation was obse...
Ascorbic Acid, Thiamine or Salicylic Acid Induced Changes in Some Physiological Parameters in Wheat Grown under Copper Stress
ascorbic acid vitamin B carbohydrates cell wall fractions copper
2015/3/6
The fresh and dry weight of roots and shoots of wheat seedlings showed a marked decrease as the concentration of copper (Cu) was increased. The contents of pectin, cellulose, soluble carbohydrates, an...
Changes in the Population of Blumeria graminis f.sp. hordei in the Czech Republic from 2009 to 2010
barley Hordeum vulgare L. powdery mildew resistances
2015/3/6
Virulences to powdery mildew resistances in barley cultivars mostly carrying unknown resistances were determined in 2009 and 2010. Random spore samples of the airborne pathogen populations originating...
Influence of climate changes in the Czech Republic on the distribution of plant viruses and phytoplasmas originally from the mediterranean subtropical region
plant viruses phytoplasma ZYMV PPV ESFY spreading climate changes Czech Republic
2015/3/3
Results of research aiming at monitoring of climate changes impact on plant pathogens distribution such as Zucchini yellow mosaic virus (ZYMV), quarantine Plum pox virus (PPV) and quarantine phytoplas...
Will climatic changes enhance the risk of Tilletia indica in Europe?
Tilletia indica Karnal bunt wheat environmental factors quarantine pest
2015/3/3
The losses caused by T. indica consist mainly in losses of export markets, in costs of quarantine precautions, control and treatment of the infected grain. These reasons were satisfactory for implemen...
Long-lasting changes in the species spectrum of cucurbit powdery mildew in the Czech Republic – influence of air temperature changes or random effect?
Golovinomyces cichoracearum Podosphaera xanthii Cucurbitaceae epidemiology air temperature geographic distribution
2015/3/3
Two ectoparasite powdery mildew species Golovinomyces cichoracearum (Gc) and Podosphaera xanthii (Px) occurring on cucurbits differ, besides other characteristics, by specific ecologic requirements. W...
Preparing for changes in plant disease due to climate change
climate change population dynamics plant disease forecasting modelling mutation
2015/3/3
Climate change will change patterns of disease through changes in host distribution and phenology, changes in plant-associated microflora and direct biological effects on rapidly evolving pathogens. S...
Changes in weed species spectrum of perennial weeds on arable land, meadows and pastures
expansion perennial weeds
2015/3/3
Occurrence of selected perennial weeds has been monitored at control sites across the Czech Republic since 1989, and trends of their occurrence have been evaluated. The monitoring has been aimed mainl...
Changes in the occurrence of mycoflora on caraway seeds after fungicide application
caraway fungal diseases fungicides
2015/3/1
The spectrum of diseases and their harmfulness to caraway has changed within the past few years. The importance of Mycocentrospora acerina, recently regarded as the most serious pathogen, has decrease...
Changes in Meligethes aeneus (Coleoptera: Nitidulidae) Susceptibility to Lambda-cyhalothrin in the Czech Republic between 2009 and 2011
pollen beetles pyrethroid resistance esteric pyrthroids adult vial tests IRAC
2015/3/13
Susceptibility of Meligethes sp. (mainly M. aeneus) from the Czech Republic was tested with lambda-cyhalothrin (111 samples in 2009, 125 in 2010, and 102 in 2011) through the use of IRAC method N...
Metabolic changes in siamweed, Chromolaena odorata induced by feeding of weed killer, Pareuchaetes pseudoinsulata（Arctiidae：Lepidoptera）
Chromolaena odorata metabolic changes Pareuchaetes pseudoinsulata Siam weed
2009/2/20
The arctiid caterpillar, Pareuchaetes pseudoinsulata Rego Barros, has been identified as a potential bio-control agent of the Siam weed, Chromolaena odorata King and Robinson. The present studies we...
Changes in Weed Response to 2,4-D Application with 5 Repeated Applications in Spring Wheat
2,4-D changes in effect of herbicides on weeds spring wheat
2009/1/14
2,4-D amine and 2,4-D isooctylester were sprayed repeatedly in the spring of 5 consecutive years on spring wheat (Triticum aestivum L.cv.Kırik)in Erzurum during the years 1990-1994. The herbicide...
Changes in Cotton Root Proteins Correlated with Resistance to Root Knot Nematode Development
Changes Cotton Root Proteins Resistance Root Knot Nematode Development
2008/12/10
The cotton (Gossypium hirsutum L.) germplasm, Auburn 634 and others derived from this source, contain resistance genes that effectively inhibit reproduction of root knot nematode (Meloidogyne incognit...
Reduced fertiliser use and changes in cereal grain weight, test weight and protein content in Finland in 1990-2005
nitrogen phosphorus fertiliser use barley oat wheat rye quality trend
2010/8/9
Since 1995 the Finnish Agri-Environmental Program has set limits for nitrogen (N) and phosphorus (P) fertiliser application rates in agriculture. The decrease in N and P fertiliser recommendations, an...