Content and yield of oil in spring rape seeds in conditions of nitrogen and sulphur fertilization

Barczak, B.; Skinder, Z.; Piotrowski, Roman

doi:10.5513/jcea01/20.1.2172

Cited by 4 publications

(1 citation statement)

References 6 publications

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“…In 2020, the fat content ranged from 42.66% in the control sample to 43.56% in the sample treated with (x1) CuNP. In a field experiment entailing the use of a fertilizer combination containing sulfur and nitrogen conducted by Barczak et al [ 54 ], the average fat content in rapeseeds was comparable to our results, ranging between 35% and 56.7%.…”

Section: Discussionsupporting

confidence: 88%

Impact of Metal Nanoparticles on the Phytochemical and Antioxidative Properties of Rapeseed Oil

et al. 2023

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The agricultural uses of nanoparticles continue to be considered as innovative methods that require more in-depth research into their impact on product quality. In our study, we investigated the effects of fertilizers containing metal nanoparticles (silver AgNPs and copper CuNPs) during the plant growth stage of winter rape cultivation, and in most experimental variants, with the exception of the (x2) application of AgNPs, we observed a decrease in the mass of one thousand seeds (MTS). The obtained result was 11.55% higher relative to the control sample in 2019, and also increased after the (x1) 4.36% and (x2) 11.11% application of CuNPS in 2020. The analyzed oxidative stability of the oil increased in both experimental years (2019–2020), with the highest values recorded after the (x1) and (x2) application of CuNPS—4.94% and 8.31%, respectively, in the first year of cultivation, and after the (x2) application of CuNPS—12.07% in the subsequent year. It was also observed that the content of polyphenols, flavonoids, squalene, tocopherols α and δ, chlorophylls, and carotenoids increased in the oil. Moreover, spectral FTIR analysis was performed on the oil samples obtained from cultivations sprayed with solutions containing Ag or Cu nanoparticles and revealed changes in several spectral regions with the maxima at ~1740, 1370, 1230, and ~1090 cm−1. Additionally, a FTIR analysis conducted in combination with multivariate analysis allowed us to classify the studied oils into the most similar groups and to study the structure of data variability. The conducted analyses revealed that the use of nanoparticles resulted in decreased size of the produced seeds and improved antioxidative properties of rapeseed oil.

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Section: Discussionsupporting

confidence: 88%

Impact of Metal Nanoparticles on the Phytochemical and Antioxidative Properties of Rapeseed Oil

et al. 2023

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Assessing critical plant sulfur concentration and nitrogen to sulfur ratio in spring canola production

Ma,

Herath,

Smith

2024

J. Plant Nutr. Soil Sci.

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AimsPlant S concentration (Sc) and nitrogen (N) to S ratio (N:S) in canola are important indicators for diagnosing S deficiency. A field study was conducted on sandy and clay loam soils at two sites in eastern Canada for three growing seasons to determine plant critical Sc and N:S ratios across various growth stages (GSs).MethodsFor each site year, factorial experiments consisting of combinations of four N levels (0, 80, 160, and 240 kg N ha–1) as urea (46–0–0) and four S levels (0, 20, 30, and 40 kg S ha–1) as potassium sulfate (0–0–50–18) were classified orthogonally to form 16 combinations. Muriate of potash (0–0–60) was also applied as needed to ensure all plots receiving the equal amount of potassium (K).ResultsOur study found that S fertilization increased plant Sc at each GS but reduced the whole‐plant N:S ratio, and the effect was stronger during the flowering stage. Both whole‐plant Sc and N:S ratios varied with GS, environment, and soil type and declined with plant aging. Our results showed that whole‐plant S analysis combined with visual signs of plant S deficiency (purple‐edged and cup‐shaped leaves with less green; stunted growth, slow blooming, and fewer flowers) appeared to be the best way to identify S problems in the field, and whole‐plant Sc and N:S ratios could confirm S deficiencies.ConclusionOur findings indicated that if the whole‐plant Sc in the rosette stage is <0.35% and the N:S ratio is >9.6, the plant may be S‐deficient, and timely supplementary S fertilization measures may be beneficial to canola crop yield.

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The Reaction of Winter Oilseed Rape to Different Foliar Fertilization with Macro- and Micronutrients

Jarecki

2021

Agriculture

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Foliar fertilization provides cultivated plants with the necessary nutrients during the growing season. The conducted field experiment was aimed at comparing the effectiveness of different variants of foliar fertilization applied in the cultivation of winter oilseed rape (Brassica napus L.), cultivar ‘ES Cesario’. The experimental factors were: A (control), B (YaraVita Brassitrel Pro), C (YaraVita Brassitrel Pro and YaraVita Thiotrac), D (YaraVita Brassitrel Pro and YaraVita Bortrac), E (YaraVita Brassitrel Pro and YaraVita Bortrac and YaraVita Thiotrac) and F (YaraVita Thiotrac). Weather conditions were variable over the years of the study and had a modifying effect on most of the tested parameters. Intensive foliar fertilization (variants D and E) resulted in a significant increase in the number of pods per plant, seed and fat yields, and SPAD (soil plant analysis development) and LAI (leaf area index) indices compared to the control. The protein yield was the highest after fertilizer applications in variants C and E. The use of YaraVita Thiotrac alone (variant F) did not provide the expected results. Foliar fertilizers applied in variant D increased Gs (leaf stomatal conductance) measurements and fat content in seeds but decreased TSW and seed protein content. It was shown that intensive foliar fertilization (variants D and E) increased seed boron content compared to YaraVita Thiotrac fertilization and the control. Fat and protein yields were strongly positively correlated with seed yield (r = 0.93 and r = 0.71, respectively). The best economic effect was obtained after applying foliar fertilization in variants D and E; therefore, they can be recommended for agricultural practice.

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Content and yield of oil in spring rape seeds in conditions of nitrogen and sulphur fertilization

Cited by 4 publications

References 6 publications

Impact of Metal Nanoparticles on the Phytochemical and Antioxidative Properties of Rapeseed Oil

Impact of Metal Nanoparticles on the Phytochemical and Antioxidative Properties of Rapeseed Oil

Assessing critical plant sulfur concentration and nitrogen to sulfur ratio in spring canola production

The Reaction of Winter Oilseed Rape to Different Foliar Fertilization with Macro- and Micronutrients

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