Production of rape (Brassica napus L.) on soils amended with leguminous tree prunings: Yield responses in relation to the chemical composition of the tree prunings

2012 ◽  
Vol 7 (24) ◽  
Author(s):  
Fiona Muchecheti
Keyword(s):  
Brassica Napus ◽  
Chemical Composition ◽  
Leguminous Tree ◽  
Brassica Napus L ◽  
Yield Responses

Chemical composition and toxic compounds in rapeseed (Brassica napus, L.) cultivars grown in Brazil

1991 ◽  
Vol 39 (11) ◽  
pp. 1933-1937 ◽  
Author(s):  
Franco M. Lajolo ◽  
Ursula M. Lanfer Marquez ◽  
Tullia M. C. C. Filisetti-Cozzi ◽  
D. Ian McGregor
Keyword(s):  
Brassica Napus ◽  
Chemical Composition ◽  
Brassica Napus L ◽  
Toxic Compounds

scholarly journals Crop rotation-dependent yield responses to fertilization in winter oilseed rape (Brassica napus L.)

2015 ◽  
Vol 3 (5) ◽  
pp. 396-404 ◽  
Author(s):  
Tao Ren ◽  
Hui Li ◽  
Jianwei Lu ◽  
Rongyan Bu ◽  
Xiaokun Li ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Crop Rotation ◽  
Oilseed Rape ◽  
Winter Oilseed Rape ◽  
Brassica Napus L ◽  
Yield Responses

Soil and tissue tests to predict the potassium requirements of canola in south-western Australia

2006 ◽  
Vol 46 (5) ◽  
pp. 675 ◽  
Author(s):  
R. F. Brennan ◽  
M. D. A. Bolland
Keyword(s):  
Triticum Aestivum ◽  
Brassica Napus ◽  
Grain Yield ◽  
Western Australia ◽  
Sandy Soils ◽  
Triticum Aestivum L ◽  
Soil Test ◽  
Brassica Napus L ◽  
Soil Test K ◽  
Yield Responses

The predominantly sandy soils of south-western Australia have become potassium (K) deficient for spring wheat (Triticum aestivum L.) production due to the removal of K from soil in grain and hay. The K requirements of canola (rape, Brassica napus L.) grown in rotation with wheat on these soils are not known and were determined in the study reported here. Seed (grain) yield increases (responses) of canola to applications of fertiliser K occurred at sites where Colwell soil test K values (top 10 cm of soil) were <60 mg/kg soil. Grain yield responses to applied K occurred when concentrations of K in dried shoots were <45 g/kg for young plants 7 and 10 weeks after sowing and <35 g/kg for 18 weeks after sowing. Application of fertiliser K had no significant effects on either oil or K concentrations in grain.

Influence of potassium and nitrogen fertiliser on yield, oil and protein concentration of canola (Brassica napus L.) grain harvested in south-western Australia

2007 ◽  
Vol 47 (8) ◽  
pp. 976 ◽  
Author(s):  
R. F. Brennan ◽  
M. D. A. Bolland
Keyword(s):  
Brassica Napus ◽  
Grain Yield ◽  
Western Australia ◽  
Field Experiments ◽  
Sandy Soils ◽  
Grain Production ◽  
Brassica Napus L ◽  
Grain Yields ◽  
Four Levels ◽  
Yield Responses

Most soils used for agriculture in south-western Australia are sandy and are now deficient in both potassium (K) and nitrogen (N) for cereal and canola (oilseed rape; Brassica napus L.) grain production. However, the effect of applying different levels of both fertiliser K and N on grain yields of these crops is not known. We report results of 10 field experiments, conducted on sandy soils in the region, to measure the effects of applying both K and N on canola grain yields and concentration of oil and protein in grain. Four levels of K (0–60 kg K/ha as potassium chloride) and four levels of N (0–138 kg N/ha as urea) were applied. Significant grain yield responses to applied N occurred in all experiments for the nil-K treatment and each level of K applied, with responses increasing as more N was applied. For all levels of N applied, significant grain yield responses occurred when up to 30 kg K/ha was applied, with no further significant grain yield responses occurring when 60 kg K/ha was applied. The K × N interaction was always significant for grain production. Application of K had no effect on the concentration of oil and protein in grain. Application of N consistently decreased concentration of oil and increased concentration of protein in grain. The K × N interaction was not significant for concentration of oil or protein in grain, but application of up to 30 kg K/ha significantly increased canola grain and so oil yields (concentration of oil in grain multiplied by grain yield). Our results are likely to be relevant for all acidic to neutral sandy soils worldwide used for growing canola crops.

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