Photoactive compounds might be used as effective pesticide agents, with almost no impact on the environment, being nontoxic and not mutagenic. The point is, that […]
Possibilities of weed control by water steam
Damp water steam used for weed control in onion, barley and maize crops was investigated meaningfully for the first time in the world. These investigations […]
Occurrence of pests and stem rot on various oil crops
The purpose of this study was to find an oil crop with no serious problems with pests and diseases, making it suitable for organic farms.The […]
The occurrence of powdery mildew on crested hairgrass in different growing conditions
Crested hairgrass (Koeleria gracilis Pers., syn. K. macrantha (Ledeb.) is classed as a good turfgrass. A first cultivar ‘Ilo’, released by the Jõgeva Plant Breeding […]
Chlorophyll fluorescence measurements as indicators of fusariosis severity in tomato plants
In these experiments the pathogenicity of Fusarium oxysporum populations was investigated. Disease index for inoculated plants was compared to chlorophyll fluorescence parameters measured with the […]
Effect of environmental conditions and inocolum concentration on sporulation of Peronospora destructor
The effect of inoculum concentration, incubation time, relative humidity (RH) and temperature on sporulation of Peronospora destructor on onion leaves was analyzed under controlled environmental […]
Cabbage seed weevil (Ceutorhynchus assimilis Payk.) and its parasitoids in oilseed rape crops in Estonia
Abstract: Besides pollen beetles, the cabbage seed weevil is the second most numerous crucifer-specialist in Estonian oilseed rape crops. The occurrence of cabbage seed weevil […]
The effect of CO2 and temperature combinations on Chenopodium album L. early growth
Vegetative pots experiments were carried out at the Phytotron of the Lithuanian Institute of Horticulture in the period between January and September 2005. Four levels […]
Optimization of chemical disease control in spring wheat
Septoria leaf blotch complex (Septoria tritici and Septoria nodorum) and powdery mildew (Blumeria graminis) are common foliar diseases of spring wheat in Estonia. This paper […]
Integrating parasitoids into management of pollen beetle onoilseed rape
Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ,UK Hymenopterous parasitoids can exert substantial natural control on oilseed rape pest populations. This paper reviews recent work at Rothamsted […]