The influence of different herbicide doses on weed infestation of winter triticale cultivated in monoculture

• Autorzy: Kraska P.

Warianty tytułu

PL

Wpływ zróżnicowanych dawek herbicydów na zachwaszczenie pszenżyta ozimego uprawianego w monokulturze

• Języki publikacji: EN

Abstrakty

EN

The study was carried out in 2003–2005 in the Bezek Experimental Farm (University of Life Sciences in Lublin). The experimental fi eld was situated on light loamy sand soil. The phosphorus content in soil was high, in potassium medium, in magnesium low. The humus content was 1.2%. The experiment was carried out in randomized blocks in three replications. The aim of the investigation was to compare three doses of herbicides in winter triticale canopy (Janko cv., Woltario cv., Krakowiak cv.) cultivated in monoculture. The herbicides Atlantis 04 WG and Factor 365 EC were applied at full recommended doses (200 gha-1), at doses reduced to 75% and 50%. The control was not treated with the herbicides. The weed infestation level was determined by means of the quantitative-weighting method at two dates: the fi rst one at the 6th week after herbicide application and the second one before harvest. The density of weed individuals was counted; the species composition and air– dry biomass of above-ground parts were estimated from the randomly selected areas of 1 m x 0.25 m at four sites of each plot. The density of weeds and weed air dry weight were statistically analysed by means of variance analysis, and the mean values were estimated with Tukey’s confi dence intervals (p=0.05). It was found that the number of weeds and air dry mass of weeds in the control were signifi cantly higher in comparison with the herbicide treated objects. The application of different doses of herbicides did not differentiate signifi cantly the weed infestation level in the winter triticale canopy. Viola arvensis, Matricaria maritima, Chenopodium album and Apera spicaventi were dominant species of weeds in the winter triticale canopy. The selection of cultivars did not influence the canopy weed infestation level.

PL

Badania przeprowadzono w latach 2003-2005 w Gospodarstwie Doświadczalnym Bezek niedaleko Chełma. W dwuczynnikowym doświadczeniu przeprowadzonym w układzie bloków losowanych porównywano działanie trzech dawek herbicydów w pszenżycie ozimym odmian ‘Janko’, ‘Woltario’ i ‘Krakowiak’ uprawianych w monokulturze. Herbicydy były stosowane w pełnych zalecanych dawkach, zredukowanych do 75% i do 50%. Kontrolę stanowiły poletka na których nie stosowano herbicydów. W pracy oceniono poziom zachwaszczenia łanu (liczba osobników, skład gatunkowy i powietrznie sucha masa) pszenżyta ozimego w 6 tygodni po zastosowaniu herbicydów Atlantis 04 WG i Factor 365 EC oraz przed zbiorem. Poziom zachwaszczenia łanu pszenżyta ozimego mierzony zarówno liczbą osobników jak i powietrznie suchą masą chwastów nie był istotnie różnicowany przez zastosowane dawki herbicydów. Uzyskane wyniki wskazują na możliwość obniżenia dawek herbicydów w łanie pszenżyta ozimego bez ryzyka wzrostu poziomu zachwaszczenia. Dobór odmiany pszenżyta ozimego nie zmieniał poziomu zachwaszczenia łanu. Gatunkami dominującymi w łanie pszenżyta ozimego w obu terminach oceny zachwaszczenia były Viola arvensis, Matricaria maritima, Chenopodium album oraz Apera spica-venti.

Słowa kluczowe

EN

different dose; herbicide dose; weed infestation; triticale; winter triticale; plant cultivation; cultivation system; monoculture; plant cultivar

• Wydawca: -
• Czasopismo: Acta Agrobotanica
• Rocznik: 2008
• Tom: 61
• Numer: 2
• Opis fizyczny: p.229-238,ref.

Twórcy

autor

Kraska P.

• Department of Agricultural Ecology, University of Life Sciences in Lublin, Akademicka 13, 20-950 Lublin, Poland

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