Effect of N on Yield and Chemical Profile of Winter Canola in Mississippi

Zheljazkov, Valtcho D.; Vick, Brian; Ebelhar, W.; Buehring, Normie W.; Astatkie, Tess

doi:10.5650/jos.62.453

Cited by 9 publications

(14 citation statements)

References 17 publications

(6 reference statements)

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“…Zheljazkov et al (2008Zheljazkov et al ( , 2009) observed that grain oil concentration of different sunflower hybrids decreased with increased nitrogen supply, but grain oil yield was unaffected due to higher total grain dry mass yield. The same response of grain oil concentration to n rate has been recently reported in canola (Zheljazkov et al, 2013).…”

Section: Fig 171supporting

confidence: 81%

Improving grain quality: ecophysiological and modeling tools to develop management and breeding strategies

Aguirrezábal¹,

Martre²,

Irujo³

et al. 2015

Crop Physiology

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Section: Fig 171supporting

confidence: 81%

Improving grain quality: ecophysiological and modeling tools to develop management and breeding strategies

Aguirrezábal¹,

Martre²,

Irujo³

et al. 2015

Crop Physiology

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“…Lin, Watts, Torbert, Howe, and Feng (2020) reported seed yields ranging from 2002 to 2234 kg ha −1 with 180 kg N ha −1 on two southern Coastal Plain soils, which was greater than the average yields (1750 kg ha −1 ) in the United States in 2017 (USDA-NASS, 2018). Similarly, Zheljazkov et al (2013) showed that increasing N rates (0-180 kg N ha −1 ) resulted in greater seed yield and oil content and suggested that winter canola could be successfully planted in the hot and humid environment of southeastern United States to produce seed and oil yields comparable to those in major canola production areas. These studies have set the groundwork; however, a better understanding of N fertility for canola production in the Southeast is needed to optimize yields and maximize economic returns.…”

Section: Core Ideasmentioning

confidence: 97%

“…They also estimated that to produce 100 kg of seeds, the canola plant needs to accumulate ∼6 kg of N (Colnenne et al., 1998). Numerous studies have reported the positive impact of N fertilization on canola production (Bishnoi, Kumar, Cebert, & Mentreddy, 2007; Hao, Chang, & Travis, 2004; Hocking, Randall, & DeMarco, 1997; Hocking & Stapper, 2001; Jackson, 2000; Porter, 1993; Raymer et al., 1990; Sieling & Christensen, 1997; Zheljazkov, Vick, Ebelhar, Buehring, & Astatkie, 2013). For example, a field study in a semi‐arid area showed that application of 90 kg N ha −1 enhanced plant biomass and seed yield by increasing the number of pods per plant and seeds per seedpod (Cheema, Malik, Hussain, Shah, & Basra, 2001).…”

Section: Introductionmentioning

confidence: 99%

Influence of nitrogen rate on winter canola production in the southeastern United States

et al. 2020

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Canola (Brassica napins L.) has the potential for being used in a double‐cropping system (two crops grown in 1 yr) as a winter crop in the humid subtropical southeastern U.S. climate, but little information is known about its nitrogen (N) management when grown in this region. Thus, a field study was conducted at two locations (Shorter, AL: Compass loamy sand; Prattville, AL: Lucedale fine sandy loam) in 2016 to determine the effect of different rates of N fertilizer on plant growth, seed yield, and N uptake of canola. The experimental design was a randomized complete block with four replications. The N rates included were 0, 68, 135, 180, 202, and 270 kg N ha−1. Linear‐plateau regression was used to evaluate the response of plant growth, seed yield, and N uptake to N rate. Overall, canola growth, yield, and N uptake were highly dependent on N fertility. Applying 180 kg N ha−1 or more for canola production significantly increased plant height, plant biomass accumulation, seed yield, and N uptake compared with the unfertilized control at both locations. The linear‐plateau regression model indicated that the optimal N rate was 197–232 kg N ha−1 for these southeastern U.S. soils. This study suggests that winter canola grown in a humid subtropical region of the United States can be a successful winter crop for a double‐crop production system and provide seed yields comparable to yields from major winter canola production areas.

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“…If N availability is not limiting, N fertilization is likely to increase protein concentration and decrease oil concentration (Kumar et al, 1991). Significant decreases in oil content (%) have been reported in association with increasing levels of N fertilizer (Zheljazkov et al, 2013), which is likely to be due to a trade-off between protein and oil concentrations. Other studies confirm this, demonstrating that the oil percentage can decrease or remain fixed in response to the addition of N (Zheljazkov et al, 2008).…”

Section: Correlation Among Crude Fat Content Protein and Fatty Acidmentioning

confidence: 99%

The Quality of Sunflower Seed Oil Changes in Response to Nitrogen Fertilizer

Shi

Zhu

et al. 2017

Agronomy Journal

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Core Ideas Topdressing N increase the content of crude fat and linoleic acid in sunflower seeds. More topdressing N reduces the content of protein, oleic acid, and palmitic acid. Crude fat content significantly correlated with protein content in sunflower seeds. Sunflower (Helianthus annuus L.) has emerged as a very important crop in China due to the economic value of vegetable oil production. A 2‐yr field experiment was conducted in 2013 and 2014 to determine the effect of different N fertilizer application levels on the oil quality of a sunflower hybrid Kang Di T562 grown in the Hetao irrigation district, a sub‐arid region in China. The effects of N fertilizer were evaluated for three characteristics of oil from sunflower seeds: crude fat content (CFC), protein content, and fatty acid composition. The results showed that N fertilizer application had a significant effect on CFC, protein content, and fatty acid composition (oleic acid, linoleic acid, palmitic acid, stearic acid). When basic N fertilizer (68 kg ha−1) was used, subsequent topdressing N applications at the end of budding promoted the synthesis of protein, palmitic acid, and oleic acid in the oil of sunflower seeds, but decreased the CFC and linoleic acid content. There was a significant negative correlation between CFC and protein content (P ≤ 0.05) and between oleic acid and linoleic acid (P ≤ 0.01) in oil from sunflower seeds. There were positive and negative correlations among the main quality indices of sunflower seed. To increase the content of crude fat and linoleic acid in the oil of sunflower seeds, topdressing should not be used, or its use should be reduced, although this could reduce the content of protein, oleic acid, and palmitic acid.

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Effect of N on Yield and Chemical Profile of Winter Canola in Mississippi

Cited by 9 publications

References 17 publications

Improving grain quality: ecophysiological and modeling tools to develop management and breeding strategies

Improving grain quality: ecophysiological and modeling tools to develop management and breeding strategies

Influence of nitrogen rate on winter canola production in the southeastern United States

The Quality of Sunflower Seed Oil Changes in Response to Nitrogen Fertilizer

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