sodininkystė ir daržininkystė 25(4)

Table. 4. Number of pods per plant,units m -2 . Baùcyny, 2003–2006
4 lentelë. Ankðèiø skaièius ant augalo, vnt. m -2 . Baùcyny, 2003–2006 m.
Number of weeds, units m -2
Piktþoliø skaièius, vnt m -2
Seed dressing chemicals
Sëklø apdorojimas cheminiais
preparatais
mechanical protection of
plants from weeds
mechaninë augalø apsauga
nuo piktþoliø
‘Brylant’
‘Wenus’
‘Marych’
‘Eureka’
chemical protection of
plants from weeds
cheminë augalø apsauga nuo
piktþoliø
‘Brylant’
‘Wenus’
‘Marych’
‘Eureka’
Mean
Vidurkis
No seed dressing chemicals
Sëklos neapdorotos
7 7 10 8 - - - - 8.0
Funaben T - - - - 12 12 13 12 12.0
Sarfun T - - - - 12 12 13 12 12.0
Gaucho FS - - - - 12 12 13 11 12.0
Super Homai - - - - 13 13 16 14 14.0
Mean / Vidurkis 7 7 9 8 12.3 12.3 13.8 12.3
LSD (p = 0.05) for: seed dressing chemicals – n.s.; cultivar – n.s.; interaction of seed dressing
chemicals and cultivar – n.s. (not significant difference) / R 05
: ryðys tarp beicø, tarp veisliø, tarp
beicø ir veisliø sàveikos neesminis
Discussion. Nowacki and Bujalski (1996), Cantot (1986), Cantot et al. (1993),
Tylkowska (2000), Wiatr (2003–2006), Jasiñska and Kotecki (1999) estimated in
their investigations concerning pea protection that loss caused by diseases and pests
during the vegetation period – particularly with unfavourable climatic conditions –
may amount even to 50% of seed yield and more. This is confirmed by research by
Chodulska-Filipowicz (1997) on broad bean cropping, which showed that the loss in
the yield resulting from no plant protection against pests amounted to as much as
70%.
This investigation also confirms this thesis because in the objects not protected
chemically the phytopathological estimation of total injuries by diseases and pests
amounted to over 70%. In addition, the lowest number of pods per plant was recorded
in all cultivars in every year of the study, which determined the amount of the
yields obtained.
Jædryczka et al. (1991), Horoszkiewicz and Filoda (2000), Mrówczyñski and
Wachowiak (2000), Mrówczyñski and Sobkowiak (1998), Matùosz and Kaniuczak
(2003), Majchrzak et al. (1998) indicate that pea is very sensitive to diseases and
pests occurring during plant vegetation, and a treatment of seeds with chemical
agents before sowing is one of the simplest measures, which should be obligatorily
used in modern agrotechnique of this plant. However, Kotliñski (1999) claims that
under certain conditions some dressings can show phytotoxic action in relation to
seeds. This author stresses the fact that this occurs most often in the case of com-
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