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- W1987387788 abstract "The effects of stand establishment and nitrogen fertilizer on yield and yield stability of winter oil-seed rape (Brassica napus L.) were investigated in two field experiments in north eastern Germany (Mecklenburg-Vorpommern). During six years of testing from 1984/85 to 1989/90 three sowing dates (10 Aug, 20 Aug, 5 Sept) as combined with three plant densities (60, 100, 140 plants/m2 in autumn) were compared. Although seed yield did not respond to the main effects of these treatments, the two-way classification resulted in significant differences from the average yield. August sowing combined with lower plant densities caused comparably high yields, while delayed sowing was somewhat effective only with higher plant density. Highest yield stability was achieved at early sowing when combined with lower plant densities. From 1986/87 to 1988/89 nitrogen top-dressings were applied during early March, at start of stem extension and shortly before start of flowering at five locations. 200 kg N/ha in one dose resulted in lowest yield performance and enhanced instability. Contrastingly, the 240 kg N/ha treatment advanced yield stability regardless of split regimes. Nevertheless, split application to 100 kg N/ha + 50 kg N/ha + 50 kg N/ha also guaranteed that high yield performance and optimum yield stability were reached simultaneously and, that the total nitrogen input could be limited to 200 kg N/ha." @default.
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- W1987387788 date "1991-11-01" @default.
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- W1987387788 title "Yield Stability of Winter Oil-Seed Rape (Brassica napus L.) as Affected by Stand Establishment and Nitrogen Fertilization" @default.
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- W1987387788 doi "https://doi.org/10.1111/j.1439-037x.1991.tb00870.x" @default.
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