The yield and chemical composition of winter oilseed rape seeds depending on different nitrogen fertilization rates and the preceding crop

2016 ◽  
Author(s):  
Adam Okorski ◽  
Jacek Olszewski ◽  
Agnieszka Pszczółkowska ◽  
Adam Okorski ◽  
Gabriel Fordoński ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Oilseed Rape ◽  
Nitrogen Fertilization ◽  
Winter Oilseed Rape ◽  
Fertilization Rates ◽  
Preceding Crop

scholarly journals Evaluation of Nitrogen Fertilization Systems Based on the in-Season Variability in the Nitrogenous Growth Factor and Soil Fertility Factors—A Case of Winter Oilseed Rape (Brassica napus L.)

Agronomy ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1701 ◽  
Author(s):  
Witold Grzebisz ◽  
Remigiusz Łukowiak ◽  
Karol Kotnis
Keyword(s):  
Oilseed Rape ◽  
Nitrogen Fertilization ◽  
Field Experiments ◽  
Positive Impact ◽  
Maximum Yield ◽  
High Yield ◽  
Available Phosphorus ◽  
Winter Oilseed Rape ◽  
Brassica Napus L ◽  
N Rates

Application of nitrogen (N) in contrastive chemical form changes availability of soil nutrients, affecting crop response. This hypothesis was evaluated based on field experiments conducted in 2015/16 and 2016/2017. The experiment consisted of three nitrogen fertilization systems: mineral-ammonium nitrate (AN) (M-NFS), organic-digestate (O-NFS), 2/3 digestate + 1/3 AN (OM-NFS), and N rates: 0, 80, 120, 160; 240 kg ha−1. The content of nitrogen nitrate (N-NO3) and available phosphorus (P), potassium (K), magnesium (Mg) and calcium (Ca) were determined at rosette, onset of flowering, and maturity of winter oilseed rape (WOSR) growth from three soil layers: 0.0–0.3, 0.3–0.6, 0.6–0.9 m. The optimum N rates were: 139, 171 and 210 kg ha−1 for the maximum yield of 3.616, 3.887, 4.195 t ha−1, for M-NFS, O-NFS, OM-NFS. The N-NO3 content at rosette of 150 kg ha−1 and its decrease to 48 kg ha−1 at the onset of flowering was the prerequisite of high yield. The key factor limiting yield in the M-NFS was the shortage of Ca, Mg, O-NFS—shortage of N-NO3. Plants in the OM-NFS were well-balanced due to a positive impact of the subsoil Mg and Ca on the N-NO3 content and productivity. The rosette stage was revealed as the cardinal for the correction of WOSR N nutritional status.

scholarly journals Influence of the Semi-dwarf Growth Type on Seed Yield and Agronomic Parameters at Low and High Nitrogen Fertilization in Winter Oilseed Rape

Crop Science ◽  
2016 ◽  
Vol 56 (4) ◽  
pp. 1573-1585 ◽  
Author(s):  
Sebastian Miersch ◽  
Andreas Gertz ◽  
Frank Breuer ◽  
Antje Schierholt ◽  
Heiko C. Becker
Keyword(s):  
Oilseed Rape ◽  
Seed Yield ◽  
Nitrogen Fertilization ◽  
High Nitrogen ◽  
Growth Type ◽  
Winter Oilseed Rape
Sign in / Sign up

Export Citation Format

Share Document