Sunflower Yield and Yield Components under Different Sowing Conditions

Ion, V.; Dicu, G.; Băşa, A. G.; Dumbravă, M.; Temocico, Georgeta; Epure, L. I.; State, D.

doi:10.1016/j.aaspro.2015.08.036

Cited by 30 publications

(23 citation statements)

References 10 publications

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“…The lower seed yields were determined as 1541.57 kg ha -1 and 1341.90 kg ha -1 from the 70x40 cm sowing distance. The findings reported by Ibrahim (2012) and Ion et al (2015) were in line with the results of our study. The effect of change in interrow spacing on crude oil ratio was statistically insignificant.…”

Section: Resultssupporting

confidence: 93%

“…Higher seed yield per plant can be obtained only by decreasing plant density due to the increased interland competition for light and other factors (Diepenbrock et al, 2001). Further increase in plant density may lead to a stable and even reduced seed yield affected by environmental factors (Ion et al, 2015). The results on the highest yield and the plant density reported from different parts of the world are contradictory to each other.…”

Section: Introductionmentioning

confidence: 96%

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Inter and Intra Row Competition Effects on Growth and Yield Components of Sunflower (Helianthus Annuus L.) Under Rainfed Conditions

2020

THE JAPS

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Sunflower (Helianthus annuus L.) is an important oilseed plant with high adaptability to semi-arid conditions for reasonable vegetable oil production. The aim of this study was to determine the agronomic responses of Bosfora hybrid sunflower cultivar sown inter-row (50 and 70 cm) & intra-row (20, 25, 30, 35 and 40 cm) spacing in rainfed conditions. The field experiment was laid out on split plots in randomized blocks with three replications for two years (2016 and 2017). Inter row spacings were placed in the main plots and intra row spacings were placed in the subplots. Narrower inter-row (50 cm) and intra-row (20 and 25 cm) plant spacing caused taller plant development but decreased stem thickness, head diameter, thousand-seed weight, number of seeds in a head, dehulled seed ratio, seed weight of per plant, crude oil ratio, day to flowering and maturity. The highest yield (2759.9 kg ha-1) was obtained in 50x20 cm spacing while the lowest (1963.8 kg ha-1) yield was obtained in 70x20 cm spacing, more likely, due to the increase in the number of plants per unit area. The crude oil ratio was decreased by narrower spacing. However, oil yield was increased with seed yield (kg ha-1) and reached the highest amounts (1221.9 and 844.2 kg ha-1) in narrow row spacing, attributed to the plant population per unit area. To conclude that the highest seed yield was obtained from narrower (50x20 cm and 50x25 cm) seeding rates in rainy year (2016), while the highest yields were obtained from lowest plant population (70 x 20 and 70 x 25 cm) rates in dry year (2017).

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Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 96%

Inter and Intra Row Competition Effects on Growth and Yield Components of Sunflower (Helianthus Annuus L.) Under Rainfed Conditions

2020

THE JAPS

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“…Significant increase in the seed yield with spacing 75 × 25 cm due to low damage by the power weeder moment and row spacing of 75 cm was favourable for obtaining higher seed yield which contributed to maximum number of seeds per unit area. Similar finding were obtained by Ion et al (2015) and Ibrahim (2012). Hand weeding twice at 15 DAS and 30 DAS produced maximum seed yield and it was at par with the pendimethalin at 1.0 kg/ha followed by hand weeding at 30 DAS compared to the other weed management treatments.…”

Section: Effect On Productivitysupporting

confidence: 85%

Spacing and weed management influence on productivity and economics of sunflower

Meena¹,

Yassin²,

Amanullah³

2019

Ind. Jour. Weed Scie.

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“…The parameter TAW showed no significant difference among the genotypes in the 1st year, ranging from 21 to 23 g, and the same performance and variation were observed in the 2nd experimental year, with weights ranging from 21.7 to 23.5 g. In contrast to the findings of this study, differences in the TAW among the genotypes have been reported in other studies and are explained by the dry matter accumulation in the achenes, which depends on the genotype and the water availability (Canavar et al, 2010;Ion et al, 2015).…”

Section: Thousand Achene Weight (Taw)supporting

confidence: 71%

Sunflower Genotype Selection for Oil Production in the Pre-Amazon Region of Brazil

Shigaki¹,

Veras²,

Siqueira³

et al. 2019

JAS

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Part of the energy consumed in the world comes from limited sources, which eventually are expected to be depleted. The search for alternative sources to meet energy needs is crucial. Biodiesel derived from vegetable oils and animal fats stands out as a biodegradable and renewable alternative source of energy. Sunflower is among the top four oil crops produced worldwide, and Brazil has a high production potential for this crop. This study aimed to identify the sunflower genotypes with the highest potential for biodiesel production in the Pre-amazon region of Brazil, where the advance of agricultural frontier represents an important role on biodiesel production. This study was conducted over 2 years of observations. The following genotypes were used: M734 (T), Helio358, EMBRAPA 122, and BRS G 35. The following parameters were assessed: initial flowering date (IFD), physiological maturity date (PMD), plant height (PH), grain yield (YIELD), thousand achene weight (TAW), and oil content (%OC). The climatic conditions of each experimental period were distinctive and directly affected the results obtained. The genotype Embrapa 122 showed the best performance regarding yield and was recommended for the pre-Amazon region of Brazil as the best adapted genotype to the local environmental conditions.

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Sunflower Yield and Yield Components under Different Sowing Conditions

Cited by 30 publications

References 10 publications

Inter and Intra Row Competition Effects on Growth and Yield Components of Sunflower (Helianthus Annuus L.) Under Rainfed Conditions

Inter and Intra Row Competition Effects on Growth and Yield Components of Sunflower (Helianthus Annuus L.) Under Rainfed Conditions

Spacing and weed management influence on productivity and economics of sunflower

Sunflower Genotype Selection for Oil Production in the Pre-Amazon Region of Brazil

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