&lt;b&gt;Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar

Alves, Luiziene Soares; Stark, Elvia Mariam Lis Martinez; Zonta, Everaldo; Fernandes, Mânlio Silvestre; Santos, André Marques dos; Souza, Sônia Regina de

doi:10.4025/actasciagron.v39i1.30941

Cited by 10 publications

(6 citation statements)

References 11 publications

(11 reference statements)

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“…The results showed a negative impact of high N rate on ΣSFA under the low irrigation rate. This is in close agreement with the study of Ali and Ullah [74], who reported that a high N rate (225 kg ha −1 ) decreased palmitic acid and stearic acid in sunflower hybrids. In the second year, ΣSFA concentration was higher with earlier planting.…”

Section: Treatment Effects On Oil Content and Compositionsupporting

confidence: 93%

Grain Quality of Maize Cultivars as a Function of Planting Dates, Irrigation and Nitrogen Stress: A Case Study from Semiarid Conditions of Iran

et al. 2020

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Maize grain is an important source of human and animal feed, and its quality can be affected by management practices and climatic conditions. This study aimed to evaluate the concentration and composition of starch, protein and oil in grain of maize cultivars in response to different planting dates (20 June and 21 July), irrigation (12-day and 6-day intervals) and nitrogen rates (0 and 184 kg N ha−1). The first two principal components (PCs) accounted for 84.5% of the total variation. High N fertilization increased protein (by 6.0 and 10.9 g kg−1) and total nonessential amino acids (by 3.4 and 2.4 g kg−1) during 2018 and 2019, respectively. With the high irrigation rate, the high N rate increased oil, total unsaturated fatty acids, and starch and amylopectin, whereas with the low irrigation rate, there was no effect of the N rate. With earlier planting, total saturated fatty acids were higher. The findings highlight the complicated relationship between the different factors and how they affect quality characteristics of maize grain. There was a large impact of year, which to a great extent cannot be controlled, even in this environment where water supply was controlled and rainfall did not affect the results.

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Section: Treatment Effects On Oil Content and Compositionsupporting

confidence: 93%

Grain Quality of Maize Cultivars as a Function of Planting Dates, Irrigation and Nitrogen Stress: A Case Study from Semiarid Conditions of Iran

et al. 2020

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“…On the other hand, for Helio251 this correlation was positive (Figure 2, B), because the content of oil per grain rose with the increase in the number of grains. Alves et al (2017) found a positive correlation between grain production and oil production in different sunflower cultivars.…”

Section: Analysis Of Boronmentioning

confidence: 86%

“…Various researchers have demonstrated the effect of applying B on determined sunflower cultivars. Alves et al (2017), when analyzing different sunflower cultivars with and without boron fertilization, found that the plants supplied with the micronutrient produced more grains and oil. Further according to them, the supply of boron in conditions of low nitrogen supply was fundamental to assure good grain and oil yields of one of the cultivars.…”

Section: Introductionmentioning

confidence: 99%

Grain production, fatty acid and oil profile from sunflower cultivars receiving different boron doses

et al. 2020

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Among the main factors that affect the productivity of crops is deficiency of nutrients. Boron (B) is an essential micronutrient for plants, and sunflower is one of the most sensitive plants to deficiency of the element. Its inadequate supply can impair sunflower plants’ metabolism and grain and oil yield. The objective of this study was to assess the effect of different boron doses on the production of sunflower grains and the content and quality of the oil obtained from them. The experimental design was randomized blocks in a factorial scheme with three cultivars (Helio251, BRS323, BRS324) and four B doses (0, 2.5, 5.0, 8.0 kg ha-1). Two harvests were performed, the first in the R5 reproductive stage and the second at the end of the R9 cycle. In both cases, the levels of B in the capitulum were measured. At the end of the cycle, the grain yield, crude protein and oil content in the grains and fatty acid profile were analyzed. The cultivars responded differently to the treatments with B. The boron fertilization influenced the grain yield and oil content, but was not correlated with the profile of the majority unsaturated fatty acids and crude protein in the grains. Variations were observed in the fatty acid profile between the cultivars, an important aspect that needs to be evaluated according to the purpose of the production. In soil with lower availability of B, cultivar BRS323 was most efficient in B uptake, grain yield and oil content and quality.

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“…Adequate N concentrations in soil and plants reflect the important agronomic parameters in sunflower crops, such as the chapter diameters, number and mass of achenes, leaf areas, photosynthesis, oil contents and productivity (Lazicki & Geisseler, 2016;Silva et al, 2017;Eltarabily et al, 2019). Therefore, it is essential to determine the ideal N dose to be used in cultivation, since new demanding and productive cultivars are available on the market, and these require adequate nutrition for their vegetative growth and productive responses (Alves et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Production of Sunflower Oil in Response to Nitrogen Fertilization under Semiarid Conditions under Irrigation

Souza¹,

Tartaglia

Santos

et al. 2021

IJANR

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Sunflower is one of the most important oilseeds in the world, whose achenes are valued in several industrial chains, mainly for the extraction and processing of its oil. Although there is some information in the literature, the nitrogen (N) requirements for sunflower in semiarid conditions under irrigation are not yet clear. The experimental design used randomized blocks, with treatments in subdivided plots with four replications during two agricultural seasons. The N doses (e.g., 0, 30, 60, 90 and 120 kg ha-1) were assigned to the plots, and to the four sunflower cultivars used (e.g., Aguará 06, Altis 99, Multissol and BRS 122), which were planted in the subplots. The N doses for the maximum achene yields for the Multissol and BRS 122 cultivars were 81.8 and 86.6 kg ha-1, respectively, while N doses of 120 kg ha-1 produced the maximum achene yields for the Altis 99 and Aguará 06 cultivars in the 2016 crop season. In 2017, the Multissol and BRS 122 cultivars were given N doses of 100.7 and 92.8 kg ha-1, respectively, and the Altis 99 and Aguará 06 cultivars were each given an N dose of 120 kg ha-1 of N. The fertirrigated doses of maximum economic efficiency of N were 60 and 70 kg ha-1 for the Multissol and BRS 122 cultivars, respectively. For the oil yields, the maximum N doses of 78.0 and 86.7 kg ha-1 for the BRS 122 and Aguará 06 cultivars and for the Multissol and Altis 99 cultivars at an N dose of 120 kg ha-1 were used for the 2016 harvest. In 2017, the BRS 122 and Multissol cultivars received N doses of 88.6 and 99.1 kg ha-1, respectively, and the Altis 99 and Aguará 06 cultivars received N doses of 120 kg ha-1. The use of fertigation allowed greater efficiency for the N doses in the sunflower cultivars in the semiarid region.

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<b>Different nitrogen and boron levels influence the grain production and oil content of a sunflower cultivar

Cited by 10 publications

References 11 publications

Grain Quality of Maize Cultivars as a Function of Planting Dates, Irrigation and Nitrogen Stress: A Case Study from Semiarid Conditions of Iran

Grain Quality of Maize Cultivars as a Function of Planting Dates, Irrigation and Nitrogen Stress: A Case Study from Semiarid Conditions of Iran

Grain production, fatty acid and oil profile from sunflower cultivars receiving different boron doses

Production of Sunflower Oil in Response to Nitrogen Fertilization under Semiarid Conditions under Irrigation

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