Absorção de nutrientes em genótipos de girassol

Jardini, Debora Curado; Scaramuz, Walcylene Lacerda Matos Pereira; Weber, O. L. S.; Filho, A. B. Borba; Fernandes, Dayane Ávila

doi:10.1590/s1983-40632014000400011

Cited by 9 publications

(12 citation statements)

References 10 publications

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“…It was significantly affected by the dose of B in the cultivar BRS 321, with a maximum estimated value of 1.74 m at the 0.58 kg ha -1 dose of B. In the BRS 323 genotype, no significant effect of fertilization with B took place, with an estimated mean of 1.74 m. The behavior difference between same-species genotypes, under similar cultivation conditions and from the same harvest, can provide a distinction in the absorption and accumulation of nutrients, resulting in variations in the agronomic characteristics, such as the height (Jardini et al, 2014). The BR 122 variety alongside with the Aguará and Gurupi hybrids demonstrated the highest heights found when 3 kg ha -1 of B were provided (Capone et al, 2016), on the other hand, the varieties Hélio 863 and Leila did not obtain height gains from the doses of B (Euba Neto et al, 2014;Khalid et al, 2020).…”

Section: Resultsmentioning

confidence: 97%

“…The absorption of nutrients by agricultural crops is determined by the interaction between the genetic load of plants and the environmental factors (Jardini et al, 2014) . There are interactions differences among genotypes of the same plant species, providing divergence in the nutrients absorption, which can reflect on the crops yield (Oliveira et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Sunflower subjected to boron doses in the semi-arid from Northern Minas Gerais, Brazil

Leandro

Menezes

Filho

et al. 2020

Agraria

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The sunflower [Helianthus annuus L. (Asteraceae)] is an annual dicotyledon, and its seeds can be used for animal and human consumption, for extracting fixed oil and for producing biodiesel. This plant is sensitive to boron (B) deficiency, with the scarcity of this micronutrient leading to lesions in the leaves and stem of the sunflower, causing the collapse of the capitulum and decreased photosynthesis. The objective of this study was to evaluate the development and the productive response of the sunflower genotypes BRS 321 and BRS 323, subjected to four doses of B (0, 1, 2 and 4 kg ha -1 ). The experimental design was in randomized blocks with three replicates and 8 treatments. Plant height, plant diameter , capitulum diameter, number of leaves, weight of 1000 achenes, grain yield, fixed oil content and oil yield were all evaluated. Doses greater than 1 kg ha -1 of B caused toxicity symptoms in the vegetative phase in the BRS 321 genotype, however, the 4 kg ha -1 dose of B promoted productive gains to this same genotype. The BRS 323 genotype was more productive in grain and fixed oil than the BRS 321 genotype, regardless of the B doses. In order to avoid phytotoxicity, applications of B to the BRS 321 genotype are recommended.

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Sunflower subjected to boron doses in the semi-arid from Northern Minas Gerais, Brazil

Leandro

Menezes

Filho

et al. 2020

Agraria

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“…All genotypes extracted macronutrients in the following descending order: N > K > Ca > P > Mg > S (Table 3), at the following quantities: 250 kg ha -1 of N, 144 kg ha -1 of K, 99 kg ha -1 of Ca, 48 kg ha -1 of P, 38 kg ha -1 of Mg, and 22 kg ha -1 of S. Ravi et al (2008) found nutrient extraction order of N > K > S > P, with no data for Ca and Mg. Kumar et al (2015), evaluating extraction of N, P, K, confirmed that safflower extracted more K than N, followed by P. However, the soil in which the experiment was conducted had low levels of N and high levels of K. Anicésio et al (2015) observed that the accumulation of N in the plants increased linearly with the application of this nutrient into the soil, which varied from 0 to 480 kg ha -1 of N. The extraction and export of macronutrients, and requirements for macronutrients varied with genotype (Tables 3, 4 and 5). According to Borges et al (2009) and Sanes et al (2013), the variation in the kinetic parameters of nutrient absorption and the morphological differences of the root system make the differentiated absorption of nutrients quite common among cultivars of the same species, as verified by Erdal and Baydar (2005) and Murthy (2006) in safflower, by Jardini et al (2014) in sunflower, and Ludwig et al (2013) in gerbera-both species of the Asteraceae family, the same as safflower. The extraction of N differed statistically among genotypes (Table 3).…”

Section: Amounts Of Extracted Macronutrientsmentioning

confidence: 95%

Seed productivity, oil content and accumulation of macronutrients in safflower (Carthamus tinctorius L.) genotypes in subtropical region

Júnior¹,

Paschoal²,

Pereira³

et al. 2017

Aust J Crop Sci

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The objective of this study was to evaluate eighteen genotypes of safflower and their absorption of macronutrients in an experiment conducted in the western region of the state of Paraná. The experiment was conducted under humid subtropical climate on Typic Hapludox soil with very clayey texture. The treatments were carried out in randomized blocks with four replications. The following traits were evaluated: shoot dry mass production, seed yield, shoot and seed macronutrient accumulation, and oil production. Data were submitted to analysis of variance and the means compared by Scott-Knott test at 5%. The mean seed yield was 4,531.8 kg ha -1 and the mean oil content was 26%. The descending order of safflower macronutrient uptake was N > K > Ca > P > Mg > S, in all genotypes, and macronutrient export was N > P > K > Mg > S > Ca. Mobility of macronutrients extracted from seeds was low for K and Ca, medium for Mg and S, and high for N and P. The genotypes with higher average yield were less efficient in their utilisation of nutrients.

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“…Sunflower was used as an ornamental plant and as a vegetable crop until the eighteenth century, when it began its use as a commercial crop ( JARDINI et al, 2014). Especially in recent years, the culture has also gained more prominence as an ornamental plant and consequently several lines of research have emerged to its agronomic improvement (NASCIMENTO et al, 2013;SANTOS JUNIOR et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Development and Production of Ornamental Sunflower Phytomass in Function of Organic Fertilization With Cattle Manure

et al. 2019

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The flower market is on the rise in Brazil. Among the most requested species stands out the ornamental sunflower.However, there are few studies related to the use of organic waste in its production.The objective evaluate the development and biomass production of ornamental sunflower Dwarf Garden under use ofcattle manure. The study was conducted from June to August 2014 in the greenhouse environment. The experimental design was completely randomized with five doses of cattle manure (0; 2.5; 5.0; 7.5 and 10.0 %) of the substrate volume, with five replications and five plants per plot. At 70 days after sowing, period in which the flower was at the R9 stage (physiological maturity), the harvest has begun. It was evaluated the root length, number of petals, green and dry phytomass of root, green and driesphytomass of petals, green and dry phytomasschapter with and without petals, days from the sowing to the appearance of the first floral bud and for initial opening and full of the floral bud. The cattle manure stimulates the production of petals, green and dry phytomass production and increases the precocity of the Sunflower Dwarf Garden. The organic fertilization with cattle manure is an efficient alternative for the production of ornamental sunflower. DESENVOLVIMENTO E PRODUÇÃO DE GIRASSOL ORNAMENTAL EM FUNÇÃO DO USO DE ESTERCO BOVINO O mercado de flores está em plena ascensão no Brasil.Dentre as espécies mais requeridas, destaca-se o girassol ornamental. Porém, são poucos os estudos relacionados ao uso de resíduo orgânico na em sua produção.Assim, objetivou-se avaliar o desenvolvimento e produção de fitomassa do Girassol ornamental Anão de Jardim sob uso deesterco bovino. O trabalho foi desenvolvido de junho a agosto de 2014 em casa de vegetação. Avaliaram-se cinco doses de esterco bovino (0, 2,5, 5,0, 7,5 e 10,0 %) do volume do substrato, utilizando-se o delineamento experimental utilizado foi inteiramente casualizado, com cinco repetições e cinco plantas por parcela. Aos 70 dias após a semeadura, período em que a flor estava no estágio R9 (maturação fisiológica), iniciou-se a colheita. Avaliaram-seas características de crescimento e produção da planta e pétalas. O esterco bovino estimula a produção de pétalas, a produção de massa verde e seca e aumenta a precocidade do Girassol Anão de Jardim. PALAVRAS-CHAVE: Helianthusannuus L.; Flores ornamentais; Resíduo orgânico.

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Absorção de nutrientes em genótipos de girassol

Cited by 9 publications

References 10 publications

Sunflower subjected to boron doses in the semi-arid from Northern Minas Gerais, Brazil

Sunflower subjected to boron doses in the semi-arid from Northern Minas Gerais, Brazil

Seed productivity, oil content and accumulation of macronutrients in safflower (Carthamus tinctorius L.) genotypes in subtropical region

Development and Production of Ornamental Sunflower Phytomass in Function of Organic Fertilization With Cattle Manure

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