Winter survival of winter rapeseed and winter turnip rapeseed in field trials, as explained by PPLS regression

Waalen, Wendy; Øvergaard, Steen I.; Åssveen, Mauritz; Eltun, R.; Gusta, L. V.

doi:10.1016/j.eja.2013.06.004

Cited by 20 publications

(9 citation statements)

References 24 publications

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“…Luteman and Dixon [1] and Sieling et al [2] observed a reduced autumn and winter growth by delayed plant establishment, especially if it was later than 10 September, increasing the risk of winter kill [3][4][5]. While Luteman and Dixon [1] found only small yield penalties, Uzan et al [6] reported a decline in seed yield of canola cultivars with a delay in sowing date under Mediterranean environment conditions due to shortening the length of the reproductive period and consequently the potential grain-filling period.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sowing Method and N Application on Seed Yield and N Use Efficiency of Winter Oilseed Rape

2017

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Abstract:In northern Europe, replacing winter barley with winter wheat as the preceding crop for winter oilseed rape (Brassica napus L.; WOSR) often results in a delayed WOSR sowing and poor autumn growth. Based on data from a field experiment running in 2009/2010, 2010/2011, and 2012/2013, this study aims (i) to investigate how a delayed sowing method affects seed yield, N offtake with the seeds, and apparent N use efficiency (NUE) of WOSR; (ii) to test the ability of autumn and spring N fertilization to compensate for the negative effects of a delayed sowing method; and (iii) to estimate the minimum autumnal growth for optimal seed yield. In order to create sufficiently differentiated canopies, a combination of four sowing methods (first week of August until the third week of September) and four autumn N treatments (0, 30, 60, and 90 kg·N·ha −1 ) was established. Each of these 16 different canopies was fertilized with 5 N amounts (0/0, 40/40, 80/80, 120/120, 140/140 kg·N·ha −1 ) in spring in order to estimate separate N response curves. Above-ground N accumulation in autumn and seed yield and N offtake by the seeds were determined. Plant establishment after mid-September significantly decreased seed yield. Autumn N fertilization of at least 30 kg·N·ha −1 increased seed yield and N offtake by the seeds without any significant interaction with sowing method and spring N supply. However, the pathway(s) remain(s) unclear. Spring N fertilization up to 130 kg·N·ha −1 (estimated by a Linear-Plateau N response curve) increased seed yield. NUE decreased with increasing N supply, where WOSR used autumn N to a lesser extent than spring N. An above-ground N uptake of at least 10-15 kg·N·ha −1 at the end of autumn growth was required to achieve high seed yields. From an environmental point of view, optimal autumn growth should be attained by choosing an adequate sowing method, not by applying additional N in autumn.

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Section: Introductionmentioning

confidence: 99%

Effect of Sowing Method and N Application on Seed Yield and N Use Efficiency of Winter Oilseed Rape

2017

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“…Countless biotic and abiotic factors play an important role in the successful overwintering of rapeseed [20,50,51]. The foliage is responsible for the successful overwintering of rape [50] while warmer, sunnier winter periods help the process, presumably due to the extending of photosynthetic activity [52]. Biostimulants such as gibberellins play a substantial role in vernalization and successful overwintering [53].…”

Section: Discussionmentioning

confidence: 99%

Influence of Nostoc entophytum and Tetracystis sp. on Winter Survival of Rapeseed

Toth¹,

Gergely²,

Berzsenyi³

et al. 2019

JAST-B

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Bioassay results proved that several microalgae strains of the Mosonmagyaróvár Algal Culture Collection (MACC) enhanced plant growth, due to their hormone content and other secondary metabolites. The aim of the current research was to improve autumn growth and winter survival of rapeseed (Brassica napus L.) by treatment with two microalgae strains selected by bioassay results. Experimental plots were set up in Mosonmagyaróvár in 2010 and 2013. Winter rapeseed hybrid (B. napus L. cv. Orlando) plants were treated in 4-6 leaves stage with 0.3 g/L and 1 g/L suspensions of MACC-612 Nostoc entophytum Bornet & Flahault and MACC-430 Tetracystis sp. in middle of October. After the treatments, the following parameters were recorded: chlorophyll-a and b, carotenoid, dry matter content of leaves, average amount of autumn foliage, diameter of root collar, length of shoot tips, fresh and dry weight of root, and number of plants in autumn and spring. Both microalgae treatments significantly increased pigment concentration and dry matter content of leaves, number of fully grown leaves (13%-46%) and dry root weight (16%-36%). Treatments with 0.3 g/L and 1 g/L MACC-612 suspensions increased the length of shoot apices by 14%-18% and 25%-35%, respectively. Number of overwintered control plants decreased significantly in both years (31%), but there was no decrease in parcels treated with 1 g/L of MACC-612 and MACC-430. Microalgae treatments could increase plant growth and survival, which contributed to the significant increase of thousand seed weight (18%-25%) and total yield (by 10%-24%).

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“…Norwegian winter conditions can be harsh, with ice encasement and deacclimation events during late winter. As such, winter survival is a limiting factor in the expansion of winter rapeseed in Norway [20].…”

Section: Average Areamentioning

confidence: 99%

Environmental Impacts of Rapeseed and Turnip Rapeseed Grown in Norway, Rape Oil and Press Cake

2020

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Many Norwegian consumers eat more red meat than is recommended by the Government. Of the protein currently consumed, 75% is of animal origin. Natural conditions in Norway favour the production of meat, dairy and seafood but high-protein plants can also be grown in the country. This study analysed the environmental impact of growing turnip rapeseed (Brassica rapa) and rapeseed (Brassica napus) and the processing of rapeseed into dietary oil and press cake. The results were then compared with some common animal protein food sources. Impacts were calculated for 24 impact indicators. The climate impact of dried seeds was 1.19 kg CO2-eq/kg, for rape oil—3.0 kg CO2-eq/kg and for rapeseed press cake—0.72 kg CO2-eq/kg. The environmental impact of rapeseed production is higher than in most other countries, predominantly due to lower yields. Press cake from rapeseed could be a valuable source of protein in foods. In Norway, the environmental impacts of this material (climate impact—2.5 kg CO2-eq/kg protein) are at the same level as other plant protein sources, but far lower than some of the most common animal protein sources (climate impact—16–35 kg CO2-eq/kg protein). When comparing the impacts while taking nutrient content into account, these differences remained the same. Improvements in the environmental performance of oilseed and its products can be achieved both by improving yields through better agronomic practices and increasing the proportion of winter rapeseed.

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Winter survival of winter rapeseed and winter turnip rapeseed in field trials, as explained by PPLS regression

Cited by 20 publications

References 24 publications

Effect of Sowing Method and N Application on Seed Yield and N Use Efficiency of Winter Oilseed Rape

Effect of Sowing Method and N Application on Seed Yield and N Use Efficiency of Winter Oilseed Rape

Influence of Nostoc entophytum and Tetracystis sp. on Winter Survival of Rapeseed

Environmental Impacts of Rapeseed and Turnip Rapeseed Grown in Norway, Rape Oil and Press Cake

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