Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

2009. EFFECT OF SELECTED AGROTECHNICAL FACTORS ON WINTER DURUM WHEAT YIELDING, EJPAU 12(3), #02.
Available Online: http://www.ejpau.media.pl/volume12/issue3/abs-02.html

ABSTRACT

Over 2005-2008 at the Agricultural Experiment Station
Pawłowice, in the vicinity of Wrocław, there was investigated an effect of sowing
rate (Experiment 1) and plant protection method (Experiment 2) on the components
and grain yield size of durum winter wheat, Komnata cultivar. Overwintering of
Komnata plants in each research year over mild winters were evaluated to be very
good. In Experiment 1, 400, 500, 600 and 700 grains·m^-2 were
sown. Komnata demonstrated very low productive tillering capacity over the research
years. The highest Komnata grain yield (4.66 t·ha^-1) was observed
under semi-drought conditions in 2006. Increasing the sowing rate increased the
number of productive spikes per area unit, decreased the number of grains per
spike and 1000 grain weight, which resulted in a decrease in productivity per
spike. Komnata did not react with an increase in the grain yield when the higher
sowing rate of 600 and 700 grains·m^-2 was applied, as compared
with the yield recorded for the sowing rate of 500 grains·m^-2.
Experiment 2 investigated the effect of the chemical plant protection method:
(0) – without protection – control; (Z) – seed dressing; (1x) – seed dressing
+ 1x fungicides; (2x) – seed dressing + 2x fungicides on the durum wheat yielding.
Dressed sowing seed and a single fungicide treatment decreased the plant infection
with fungal pathogens. The chemical plant protection methods applied, as compared
with the control (with no protection) increased the number of spikes per area
unit, number of grains per spike and 1000 grain weight, which enhanced the productivity
per spike. Wheat grain yield for the seed dressing treatments (Z) was significantly
higher than the no-protection yields (0). The plant protection method which involved
dressed sowing seed and 2-time fungicide treatment (2x) was more favourable to
the grain yield than seed dressing and a single fungicide treatment.

Key words: winter durum wheat, sowing rate, chemical protection method, yield structure components, grain and straw yield