Abstract
Summary The aim of this work was the evaluation of winter wheat secondary weed infestation occurring in spring depending on a tillage system and cultivar. The following research parameters were analyzed: factor I – soil tillage system: a) ploughing, b) reduced tillage – cultivating, c) reduced tillage – disc harrow; factor II – winter wheat cultivar: a) Muszelka, b) Ostka Strzelecka, c) Kohelia, d) Satyna. Herbicide Maraton 375 SC was used in autumn at a dose of 4 l/ha. Weed density was evaluated by counting number of weeds in spring, using square-frame method on the 0.25 m 2 . The sum of all individual weed species was analyzed on every treatment set up in 4 replicates during 3 years of studies. Log-linear analysis showed that during the first years of reduced tillage systems, the number of weed per area was significantly higher than in the conventional tillage system. Muszelka cultivar showed the most variable weed infestation in comparison to other winter wheat cultivars. The dominant weed, regardless of the winter wheat cultivar and tillage systems, was Viola arvensis. Moreover, ploughing or reduced tillage conditions were favorable for Fumaria officinalis. However, reduced tillage system, using disc harrow provided optimal conditions for growth of Lamium purpureum.
Highlights
The aim of this work was the evaluation of winter wheat secondary weed infestation occurring in spring depending on a tillage system and cultivar
Współzależności między liczbą badanych gatunków chwastów na jednostce powierzchni, odmianami pszenicy i sposobem uprawy roli oceniano za pomocą analizy logliniowej
Analiza korespondencji umożliwia ocenę struktury zależności odmian lub gatunków chwastów od pozostałych analizowanych czynników doświadczenia
Summary
The aim of this work was the evaluation of winter wheat secondary weed infestation occurring in spring depending on a tillage system and cultivar. The following research parameters were analyzed: factor I – soil tillage system: a) ploughing, b) reduced tillage – cultivating, c) reduced tillage – disc harrow; factor II – winter wheat cultivar: a) Muszelka, b) Ostka Strzelecka, c) Kohelia, d) Satyna. Muszelka cultivar showed the most variable weed infestation in comparison to other winter wheat cultivars. The dominant weed, regardless of the winter wheat cultivar and tillage systems, was Viola arvensis. Analizowano następujące czynniki doświadczenia: czynnik I – systemy uprawy roli: a) uprawa płużna, b) uprawa bezorkowa wykonana kultywatorem, c) uprawa bezorkowa wykonana brona talerzową; czynnik II – odmiany pszenicy ozimej: a) Muszelka, b). Natomiast Lamium purpureum charakteryzował się dużą liczebnością jedynie w uprawie bezorkowej przy użyciu kultywatora
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