Performance of Canola (Brassica napas L.) Seed Yield, Yield Components and Seed Quality under the Effects of Four Genotypes and Nitrogen Fertilizer Rates

El‐Nakhlawy, Fathy S.; Bakhashwain, Ahmed A.

doi:10.4197/met.20-2.3

Cited by 13 publications

(2 citation statements)

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“…Moreover, mean plant height ranged from 91.8 cm in control to 111.5 and 113.1 cm at 135 and 168 kg N ha −1 treatments (Table 5). Amer and El‐Ramady (2015) and El‐Nakhlawy and Bakhashwain (2009) found similar results, where N rates resulted in significant variations in plant height and higher N rates had maximum growth. Equivalently, this study revealed that plant height at 135 kg N ha −1 had maximum growth with 0.6 cm differences, indicating no further supplement N was needed beyond this rate.…”

Section: Resultsmentioning

confidence: 70%

Optimizing nitrogen application rates for winter canola in Mississippi

Gajula,

Singh,

Kaur

et al. 2024

Agrosystems Geosci & Env

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The production of canola (Brassica napus L.) in the United States is low, whereas the demand is high. Most US canola research is centered in the Midwest, with minimal to no research in Southern states including Mississippi. Therefore, a study was conducted in Mississippi to assess the feasibility of canola as a double crop with soybean (Glycine max L.) rotation and determine its optimum nitrogen (N) requirement. After canola was harvested, soybean was planted within the same experimental plots. In total, six N treatments (0 [control], 34, 67, 101, 135, and 168 kg N ha−1) were applied to canola and replicated four times across all site‐years in a randomized complete block design. The application of N increased seed yield, aboveground biomass, and N content compared to the control in canola. Across all site‐years, the highest seed yield was 1726 kg ha−1 at 168 kg N ha−1. Moreover, N uptake, plant height, and test weight were highest at 135 kg N ha−1, which were 76%, 21%, and 44% greater than control, respectively. Oil content and seed weight were inversely related to N rates indicating dilution with increased N. Overall, 141 kg N ha−1 was found to be the agronomic optimum nitrogen rate, and no further supplementation was deemed necessary to maximize canola yield in Mississippi. Additionally, the following soybean crop benefitted from the N applied to canola and produced greater yields. This study establishes that canola has the potential for double cropping without adversely affecting subsequent soybean yield, provided optimum N rates are applied.

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Section: Resultsmentioning

confidence: 70%

Optimizing nitrogen application rates for winter canola in Mississippi

Gajula,

Singh,

Kaur

et al. 2024

Agrosystems Geosci & Env

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“…Many studies (Laudicina et al, 2010;Fernandez et al, 2019) in different agroclimatic conditions confirmed that intensive tillage led to a higher soil moisture, aeration, organic substrates accessibility and NO3-N content than reduced tillage. Moreover, nitrogen availability might increase the absorbed nitrogen by plant root which raise protein metabolism and subsequently the CP content in seeds (El-Nakhlawy and Bakhashwain, 2009). Beside the increase in CP content the oil content did not differ, potentially at the expense of other seed components.…”

Section: Effect Tillage System On Yield and Seed Qualitative Traitsmentioning

confidence: 98%

Tillage intensity and compost application effects on organically grown camelina productivity, seed and oil quality

Angelopoulou¹,

Tsiplakou²,

Bilalis³

2020

Not Bot Horti Agrobo

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The importance of Camelina sativa has lessened substantially over the last half century, however its unique oil composition and the beneficial agronomic attributes with regard to sustainable agriculture have recently reignited interest in this oilseed crop. Notwithstanding the great interest in camelina, the potential to be cultivated organically has not received prominent attention from researchers. The objective of this study was to evaluate the response of organic camelina to different tillage systems and compost types, based on differences in yield parameters, oil content, seed crude protein and fatty acid profile. The field experiments, conducted during the 2014, 2015 and 2016 growing seasons, were laid out in a split plot design with three replicates, two main plots (conventional tillage and minimum tillage) and three sub-plots (vermicompost, compost, unamended control). It is consequential from the results that the effect of the type of organic amendment was highly significant on camelina’s productivity. Particularly, compost treatment resulted in higher seed and oil yield (1132 and 446 kg ha-1, respectively) compared to the vermicompost (682 and 269 kg ha-1, respectively) and the unamended control (554 and 220 kg ha-1, respectively). Regarding the fatty acid profile, both organic amendments increased linoleic and palmitic acids, while they presented disparate effects on a-linolenic acid. Furthermore, tillage system influenced significantly only thousand seeds weight, protein content and gondoic acid, enabling the use of reduced tillage to be comparably effective on organically grown camelina performance. Further experimentation is needed to match crop needs with the appropriate cropping techniques in order to ensure an effective organic cultivation.

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