Keen N.T., Mayama S., Leach J.E., Tsuyumu S. (eds.), 2000. Delivery and Perception of Pathogen Signals in Plants. APS Press - The American Phytopathological Society, St. Paul, Minnesota. IBN 0-89054-259-7

Diseases of Woody Ornamentals and Trees in Nurseries. Edited by R.K. Jones and D.M. Benson. 2001. APS Press - The American Pbytopathological Society, St. Paul, 482 pp. Price $ 88.00. ISBN 0-89504-264-2.

Sharma S.B. (Ed.) 1998. The Cyst Nematodes. Kluwer Academic Publishers, Dordrecht, 452 pp., ISBN 0412 755300

Field experiments were conducted to determine quizalofop-Puefuryl (Pantera 040 EC) efficacy for control of couchgrass (E repensi at crop rotation peas-spring cereals. The results showed that herbicides applied at 4-8 leaf stage of E repens enhanced weed control effect. Subsequent treatments i.e. at I 0-12 leaf stage of E repens were less effective. In the following years, the yield of spring cereals depended on efficacy ofE repens control in forecrop i.e. pea. Spring cereals (wheat and barley) gave better yield when higher level ofE repens control was observed.

Amendment of potato-dextrose agar with grapefruit extract at dose 40μg/cm3 inhibited linear growth of Phytophthora cryptogea about 50%. At such concentration of the product in soil leachate formation of zoosporangia was inhibited about 95%. Application of grapefruit extract as peat drench reduced population density of the pathogen about 80% and this high activity was observed at least 30 days.

The objective of this work was to estimate the disappearance of pyrimethanil the active ingredient of Myth os 300 SC. At present, Myt hos 300 SC is commonly used for the protection of greenhouse vegetables against diseases of fungal origin. The behaviour ofpyrimethanil deposits was studied on tomato plants grown in commercial greenhouses sprayed with homogenous 0.15% aqueous solution of this plant protection product. It was found that the value of pyrimethanil residues on ripening fruits decreased by half and reached zero levels in 5. 7 and 13.7 days after Mythos 300 SC application, respectively. Pyrimethanil residues on tomato leaves decreased by half within 4.0 days and reached zero level in the first I 0.5 days. Therefore, in conditions of high infection pressure, there is a need to repeat the fungicide application as early as after 3 or 4 days after previous application of Mythos 300 SC.