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The influence of hybrid rye production technology on the amount and structure of energy inputs and the energy efficiency index of production were compared in a field experiment. The level of energy inputs is mainly determined by materials, including mineral fertilizers, which account for about 85.6% of accumulated energy invested in the production of rye. The required energy inputs in the form of fuel constitute approximately 12.3%, and in the form of aggregates – 2.1%. The amount of energy inputs necessary for the production of hybrid rye totals 17.52 GJ·ha-1 on average, while resigning from mineral fertilization in the spring reduces this value to 14.12 GJ·ha-1. The most favourable energy efficiency index in the production of hybrid rye, following winter rape cultivation, was recorded when no nitrogen fertilization was applied in the spring.
Field experiment was conducted in the years 2007–2009 at the Research and Education Center Gorzyń branch Swadzim Poznań University of Life Sciences. The aim of this study was to determine the severity of infection by patogenic fungi on spring barley as an effect by different tillage systems (conventional and direct drilling), forecrop (beet and maize) and kind of crop residue (white mustard, oats, spring vetch, wheat straw and wheat stubble).
A field experiment was conducted in 2008–2009 at two Experimental stations Brody and Przybroda – Experimental Station of Poznan University of Life Sciences. The aim of this study was to compare the efficacy of Select Super 120 EC herbicide used in winter oilseed rape at different doses in the autumn (Brody) T1 – BBCH 12–13 and in the spring (Przybroda) T2 – BBCH 33. Conducted investigations showed 85% efficacy of Select Super 120 EC applied in the autumn at the dose of 0.6 l/ha in controlling volunteers triticale. Weed control was more efficient after the spring herbicide application. The highest control efficacy of barley volunteers, 99% was obtained with treatment where Select Super 120 EC was used at the dose of 0.6 l/ha. The increased dose of this herbicide to 0.8 l/ha and 1.0 l/ha didn’t improve weed control. The treatment where Targa Super 05 EC was used at the dose 1.0 l/ha showed 98% efficacy and was comparable to the treatment with herbicide Select Super 120 EC used at the dose of 0.6 l/ha. There was no significant influence of herbicide treatments on weight of 1000 seeds, weight of hectoliter and on yield of winter oilseed rape. The highest oilseed rape yield was obtained with Select Super 120 EC herbicide at the dose of 0.8 l/ha (4.5 t/ha).
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