Rapeseed

About: Rapeseed is a research topic. Over the lifetime, 2945 publications have been published within this topic receiving 51790 citations. The topic is also known as: Brassica napus & rape.

Diagnosing boron deficiency in rapeseed and mustard by plant analysis and soil testing

Abstract: Boron (B) deficiency is a widespread nutritional disorder in crop plants, including rapeseed and mustard. However, plant analysis and soil testing diagnostic criteria for B are inadequately reported in the literature. Therefore, greenhouse and incubation studies were carried out using a B‐deficient alkaline calcareous soil (hot water extractable B, 0.11 mg/kg) of Pakistan to determine the internal and soil test B requirement of rapeseed and mustard. Boron fertilization substantially enhanced the growth of both species; the maximum increase in grain yield was 43% for rapeseed and 36% for mustard over the yield of respective control plants. Fertilizer requirement for near‐maximum (95%) grain yield was 0.7 mg B/kg for rapeseed and 0.9 mg B/kg for mustard. Critical plant tissue B concentration in rapeseed was 32 mg/kg in whole shoots and 38 mg/kg in most recently matured leaves. However, internal B requirement of mustard was relatively greater: i.e. 41 mg/kg in whole shoots and 49 mg/kg in leaves. Th...

Sulphur nutrition: An important factor for the quality of wheat and rapeseed

Abstract: The incidence of sulphur (S) deficiency has increased in many crops in the U.K. and other European countries in the last 10 years. Apart from the effects on yield, the S nutrition of a crop often has a strong influence on the quality of the produce. We have shown that S fertilisation significantly improved breadmaking quality of field-grown wheat (Triticum aestivum L.) in the U.K. with the loaf volumes of the same variety grown at different sites correlating better with the concentrations of grain S than grain N. Sulphur also increased gel protein content of flour, but decreased its elastic strength. In contrast, application of S fertilisers to oilseed rape (Brassica napus L.) can lead to increased glucosinolate concentrations in the seed which exceed the limit for the meal to be used in animal feeds. Results from 29 field experiments showed that the glucosinolate concentration of rapeseed was usually higher when grown at the S-sufficient than the S-deficient sites. However, the addition of S fertiliser increased the glucosinolate concentration much more under S-deficient than under S-sufficient conditions. Furthermore, there was a strong interaction between N and S on seed glucosinolates. Increasing N decreased the glucosinolate concentration when S was deficient, but increased the glucosinolate concentration when S was applied. The need to maintain a balanced N and S supply for both yield and quality is stressed.

Influence of selective and non-selective hydrogenation of rapeseed oil on carcass fat of rats.

Abstract: Two rapeseed oils with erucic acid contents of 23 and 42%, their hydrogenated products produced under selective and non-selective conditions, corn oil, and a lard – olive oil mixture were fed to se...

Preparation and antioxidative properties of a rapeseed ( Brassica napus ) protein hydrolysate and three peptide fractions.

Abstract: This study investigated the possibility of converting the insoluble rapeseed meal protein into functionally active ingredients for food applications. The rapeseed (Brassica napus) meal protein isol...