Life Sciences and Agriculture

Journal of Plant Protection Research

Content

Journal of Plant Protection Research | 2001 | No 4

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Abstract

The purpose of applying an additional air flux in field sprayers is limiting liquid drift. The flux also influences the quality of plant spraying. Air Plus Spridotrain sprayer, produced by RAU company, was applied in the research on the influence of air flux on the quality of coverage ofwinter wheat (Roma variety). The plant coverage was determined using water sensitive papers.
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Authors and Affiliations

Andrzej Gajtkowski
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Abstract

The influence of powdered fruits of Foeniculum capillaceum Gilib. on the fecundity ofSitophilus oryzae was examined. The powder was added in paper bags to the rearing of the insects to prevent a direct contact. The sign i fi cant reduction of the fecundity of females was recorded. The sequent effect of activity of the powder was also observed. It resulted in the decrease of the fecundity of offspring generation - F2 reared on wheat grains without the powder.
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Authors and Affiliations

Maria Wawrzyniak
Aleksandra Błażejewska
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Abstract

In the years I 999-2000 the studies on the population of true bugs colonizing the inflorescences of quinoa (Chenopodiwn quinoa Willd.) were conducted in Chrząstowo near Bydgoszcz. The dominating species was Lygus rugulipennis Popp. The species was recorded in 81.44% in 1999 and 83.64% in 2000 of all collected true bugs.
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Authors and Affiliations

Danuta Wrzesińska
Maria Wawrzyniak
Krzysztof Gęsiński
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Abstract

Soil, the main element of natural environment is constantly contaminated and degraded by various man's activities. Big industrial factories, which emit to the atmosphere excessive quantities of harmful solid, liquid and gaseous substances, are the main cause of this phenomenon. Lm proper usage of fertilisers and chemical plant protection agents effects the soil in a lesser degree, but it is still unfavourable. The aim of this research was to use potato beetle larva in stage L4 as a soil bioindicator fi-om the plantations of spring wheat, potatoes, and corn which were treated with herbicides. The obtained results did not show any negative effect of herbicides used on potato beetle larva growing in the soil.
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Authors and Affiliations

Zdzisław Przybylski
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Abstract

The aim of the field experiments was to evaluate the effect of herbicide Proponit 720 EC used commercially (which content in I I - 720 g of propisochlor) for grass- and dicotyledonous weed control in winter wheat, winter barley, sugar beet, pea, potato and maize. The field trials were conducted over period 1995-1998 in experimental stations, which belong to the institute of Plant Protection. Proponit 720 EC effectively controls Apera spica-venti and Echinochloa crus-gal/i. In winter cereals dicotyledonous weed control was satisfactory but at other tested crops better weed control was obtained while Proponit 720 EC application with other herbicide. The yield of crops was increased after Proponit 720 application. Proponit 720 EC was not enough safe for sugar beet but was selective for other tested crops.
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Authors and Affiliations

Krystyna Miklaszewska
Kazimierz Adamczewski
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Abstract

Occurrence of aphid species was studied in four types of midfield thickets in the Lower Vistula Landscape Park in Poland. This paper presents and discusses the relationships between aphid communities, their species diversity and dominance structure in these thickets.
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Authors and Affiliations

Janina Bennewicz
Grzegorz Kaczorowski
Tadeusz Barczak
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Abstract

In the Institute of Plant Protection Branch in Sośnicowice an investigation was performed on establishing novel methods for testing biological activity of seed dressings against snow mould (Microdochiwn nivale). Seeds of winter wheat used for the experiments in artificial conditions were disinfected in sodium hypochlorite, subsequently infected with the pathogen, and treated with seed dressing fungicides (Baytan Universal 19.5 WS, Zaprawa Funaben T, Maxim 025 FS, Raxil Extra 515 FS and Vitavax 200 FS). In laboratory tests inoculation with conidial suspension was applied, and in climatic chamber experiments either conidial suspension or inoculum grown on sand-cornmeal medium was used. The field experiment with the same seed dressings was carried out on naturally infested plots, and the disease developed under snow cover lasting for 58 days. Two novel climatic chamber methods (Z and PK) proved to be suitable for testing biological activity of seed dressing fungicides against snow mould (M nivale) as correlation coefficients with field results at P=0.05 were 0.9760 and 0.9453. Method Z was recognised as more suitable. Differences between seed dressings were statistically insignificant. The laboratory method was recognised as useful for controlling the pathogen (M. niva!e), but its usefulness for controlling the disease (snow mould) may not be sufficient under a range of different winter conditions.
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Authors and Affiliations

Barbara Krzyzińska
Agnieszka Mączyńska
Hanna Sikora
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Abstract

The process of plant selection by insects is mediated by repellents and attractants. Several compounds may be involved in this interaction. Thus intraspecific variation of the compounds concentration play an important role in the herbivory. The best tool for the characteristic of this variation is chemometrics. The strategy of the analysis with the use of literature data on terpen es and sesquiterpenes variations in Pin us caribaea needles in relation to Atta laevigata herbivory is exemplified herein. Simple cluster analysis and principal components analysis were used for the data study. Two factors were found lo be sufficient to describe total variation in more than 90%. Factor I is responsible for repellent properties. From factor loading, the relevant chemical compounds were identified.
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Authors and Affiliations

Janusz Szafranek
Jan Nawrot
Beata Szafranek
Edmund Maliński
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Abstract

In the years 1977-1979 and 2000 the bugs (Heteroptera) were collected from yarrow, well-known herbaceous plant. It turned out that the bugs made up to 30% on average of all arthropods collected from yarrow, The most numerous were phytophagous bugs (79-96%), among them the known pest of genera Lygus and Plagiognathus. Among zoophagous bugs the most numerous were genera Nab is and Orius. Both of phytophagous and zoophagous bugs of these genera had their life cycle on yarrow. For comparison Heteroptera from yarrow growing in the wild were also collected.
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Authors and Affiliations

Alicja Korcz
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Abstract

In 1997-1999 observations of health status of spring barley grown in two-component mixtures with cereals or pea were performed in two experiments, differing in the agricultural utility of soil. A much better health status of the studied species was found in the mixed crop than in their pure stand. Two-component mixtures were differentiated in the occurrence of leaf diseases caused by Drechslera teres, Drechslera graminea, Puccinia graminis and P. hordei, Rhynchosporium secalis and Erysiphe graminis. The healthiness of lower parts of stem and roots depended on the quality of soil and mixtures factor. A higher infection due to foot root rot complex was noted on barley cultivated on the poorer soil in homogenous stand.
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Authors and Affiliations

Anna Wenda-Piesik
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Abstract

In greenhouse experiments the susceptibility of meadow fescue, perennial ryegrass and Italian ryegrass to Fusarium avenaceum, F. cu/mor um and F. grami num infection was studied. Various responses to Fusarium spp. infection were observed among the tested grass species and their cult i vars. Meadow fescue was the most susceptible to all the Fusarium isolates used. F. avenaceum isolates also strongly reduced perennial ryegrass emergence. In the experiments with Italian ryegrass the number of seedlings having survived the artificial infection of seeds with Fusarium spp. was significantly larger for Atos, Gran, Mitos and Polus cultivars than for Kroto, Lotos and Tur. All of the studied grasses were more susceptible to the strongly pathogenic F. avenaceum isolates than to F. culmorum and F. graminum isolates, having moderate pathogenicity.
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Authors and Affiliations

Barbara Gołębniak
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Abstract

In the years 1999-2000 the occurrence oferiophyoids on grasses was studied in the Wielkopolska region. 9 eriophyoid species were recognized on 29 grass species. Eriophyoids were present in 38% examined plant samples. The most often infested were Agropyron repens and Lolium perenne and the least Arrhenatherum elatius. Abacarus hystrix and Aculodes mckenziei were the dominating eriophyoid species. The intensity of occurrence varied and was related to the eriophyoid species and the host plant. Feeding of some eriophyoids species caused either matting or browning or twisting of the leaf blades.
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Authors and Affiliations

Jan Kozłowski
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Abstract

Phenoxy acids significantly increased the number of Sitobion avenae F. and Rhopalosiphum padi L.on wheat treated with Aminopielik D and Illoxan 36 EC. This herbicidal effect could be caused directly by derivatives ofphenoxy acid or indirectly by altered metabolism of wheat plant.
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Authors and Affiliations

Jerzy Giebel
Małgorzata Woda-Leśniewska
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Abstract

Influence of grapefruit extract (GE) on mycelial growth, spore germination, population density of Fusarium oxysporum f. sp. cyclaminis and F. oxysporum f. sp. dianthi and its effectiveness in the control of Fusarium wilt of carnation and Fusarium corm rot of gladiolus (F. oxysporum f. sp. gladioli) was studied. Amendment of PDA with 40 μg ofGE/cm3 inhibited mycelial growth about 50%. Drenching of carnation with 165 μg of GE/cm 3, immediately after planting, resulted in drastical decrease of colony forming units number of the pathogen and increased healthiness plant stand about 50%. Applied as gladiolus corm soak, GE at cone. 660 ug/crrr' decreased development of Fusarium rot of gladiolus clones at least twice.
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Authors and Affiliations

Leszek B. Orlikowski
Czesław Skrzypczak
Izabela Harmaj
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Abstract

B. Weischer, D.J.F. Brown. 2000. An introduction to Nematodcs: General Nematology. Pensof Publishers, Sofia, 202 pp., ISBN 954-642-087-5
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Authors and Affiliations

Stefan Kornobis
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Abstract

Siddiqi M.R. 2000. Tylcnchida: Parasites of Plants and Insects, 2°• Edition. CABI Publishing, Wallingford. 833 + XVII pp., ISBN 0851992021.
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Authors and Affiliations

Stefan Kornobis
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Abstract

Ash Cynthia L. (ed.). 2001. Shade Tree Wilt Diseases. APS Press - The American Phytopathological Socicty, St. Paul, Minnesota 257 pp. ISBN 0-89054-277-5.
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Authors and Affiliations

Jerzy J. Lipa
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Abstract

Kraft J.M., Plleger F.L. (eds.). 2001. Compendium of Pea Diseases and Pests. 2nd Edition. APS Press - The American Phytopathological Society. St. Paul, Minnesota, USA. 67 pp. ISBN 089054-269-4.
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Authors and Affiliations

Jerzy J. Lipa

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