sodininkystė ir daržininkystė 25(4)

SCIENTIFIC WORKS OF THE LITHUANIAN INSTITUTE OF HORTICULTURE
AND LITHUANIAN UNIVERSITY OF AGRICULTURE.
SODININKYSTË IR DARÞININKYSTË. 2006. 25(4).
RESPONSE OF SEVERAL CULTIVARS OF SOWING PEA
TO FUNGICIDE-INSECTICIDE DRESSINGS AND
HERBICIDES
Beata SZWEJKOWSKA*, Pavelas DUCHOVSKIS**
*Chair of Plant Production, University of Warmia and Mazury,
Oczapowskiego 8, 10-719 Olsztyn, Poland. E-mail b-szw@gazeta.pl
**Lithuanian Institute of Horticulture, Kauno 30 LT-54333 Babtai, Kaunas
distr., Lithuania. E-mail p.duchovskis@lsdi.ly
The effect of fungicide-insecticide dressings and herbicides on the development
of plants, degree of injury caused by diseases and pests, as well as susceptibility
to weed infestation were estimated in three-year experiment carried out in the
years 2004–2006. In addition, it was estimated to what degree the chemical protection
effected the number of pods on the plant, which is the main component of the
crop. The investigation has shown a positive response of cultivars to the dressings
applied as no negative effects on germination, emergence and development were
observed during the whole vegetation period. The effectiveness of dressings against
diseases and pests was high. The Super Homai insecticide dressing protected plants
against diseases and pests most effectively. Good results were also recorded for
herbicides, the application of which was justifiable because it efficiently reduced the
level of weed infestation, and this allowed obtaining the highest number of pods both
per fruit-bearing node and per plant.
Key words: diseases, dressings, growing technology, pea, pests, cultivar.
Introduction. The pea yield is determined not only by genetic properties of
cultivars, climatic conditions or fertilization, but also by other agrotechnical factors,
such as complex protection against diseases, pests or weeds, since the specific
developmental rhythm of leguminous plants, including pea, causes a lot of problems
during cultivation. The period of a slow rate of growth in the phase of seedling and
leaf rosette is particularly unfavourable because plants in this time not only get weedy
easily but they are more susceptible and exposed to diseases and pests, as well
(Szwejda, 1992; Cantot et. al., 1993; Mrówczyñski and Wachowiak, 2000; Wnuk
and Poboýniak, 2000; Borowiecki and Ksiæýak, 2001). Some authors, for example,
Fiedorow and Weber (1996), Horoszkiewicz and Filoda (2000), stress a high influence
of the course of inoculation by Rhizobium bacteria, therefore, they claim that
an application of simple plant dressing measure is very important. Podleúny et al.
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