Growth Dynamics of Sesame Cultivars

Ribeiro, Rayanne Maria Paula; Albuquerque, José Ricardo Tavares de; Santos, Manoel Galdino dos; Júnior, Aurélio Paes Barros; Grangeiro, Leílson Costa; Silveira, Lindomar María da

doi:10.1590/1983-21252018v31n430rc

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Sesame (Sesamum indicum L.) is an oilseed that has great potential for economic exploitation, both through the consumption of seeds, highly rich in proteins and carbohydrates, as well as through the use of oil and other products derived from this plant species (RIBEIRO et al, 2018;LIMA et al, 2020). Despite this, the low production of sesame makes Brazil not competitive on the world market, and this is motivated by the high cost of labor, low technological level, and inputs used in the production environments in the country (SANTOS et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Economic Evaluation and Effectiveness of Herbicides Applied in Pre-Emergency in the Sesame1

et al. 2021

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The sesame crop has great economic potential due to the various possibilities of exploitation, however, there is a lack of information about the chemical control of weeds in the crop, mainly about the application of herbicides in pre-emergence. Therefore, the objective of this study was to evaluate the economic viability and efficacy of herbicides applied in pre-emergence for the control of weeds in the sesame crop. The experimental design was in randomized blocks, with four replications. The treatments consisted of seven herbicides (diuron, flumioxazin, oxadiazon, oxyfluorfen, metribuzin, linuron, and S-metolachlor) and a mixture (metribuzin + oxyfluorfen) applied in pre-emergence. The two control treatments were weeded and nonweeded plots. The variables evaluated were percentage of control of the weed community, grain yield, gross and net income, rate of return, and profitability index. The highest productivity value was for weeding, followed by the herbicides diuron and flumioxazin, with 2,000.44 kg ha-1, 1,957.35 kg ha-1;, and 1,933.13 kg ha-1, respectively. The herbicides diuron and flumioxazin obtained the highest net income, in the amounts of R$ 7,831.26 and R$ 7,762.85, respectively. The diuron and flumioxazin applied in pre-emergence showed more than 80% in the control of weeds in the sesame crop, showing efficiency in the control. The use of herbicides applied in pre-emergence to control weeds, mainly diuron and flumioxazin, is as efficient as mechanical control, demonstrating the potential for use and economic viability in relation to mechanical control, which presents a high cost/benefit ratio.

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Section: Introductionmentioning

confidence: 99%

Economic Evaluation and Effectiveness of Herbicides Applied in Pre-Emergency in the Sesame1

et al. 2021

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“…Logo, a morfologia de plantas compreende o estudo da anatomia vegetal e reflete a adaptação ecológica das plantas, devido a forte relação entre forma e seu funcionamento, visto que tem intensa relação com a fisiologia. Assim, a análise de crescimento continua sendo o meio mais acessível, de baixo custo e com precisão para avaliar o crescimento e entender a contribuição de diferentes processos fisiológicos sobre o comportamento vegetal (LEMES et al, 2018) influenciados por meio de fatores ambientais, genéticos e agronômicos (RIBEIRO et al, 2018).…”

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Crescimento Inicial De Algodão Cultivado Em Plintossolo Pétrico Concrecionário

Nikkel

Lima²

2020

EnergAgric

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CRESCIMENTO INICIAL DE ALGODÃO CULTIVADO EM PLINTOSSOLO PÉTRICO CONCRECIONÁRIO* MARCIO NIKKEL1, SAULO DE OLIVEIRA LIMA2 * Parte da Tese de Doutorado do primeiro autor. 1 Programa de Pós-Graduação em Produção Vegetal, Universidade Federal do Tocantins, Campus Gurupi, Rua Badejós, Lote 7, Chácaras 69/72, Zona Rural, CEP 77402-970, Caixa Postal 66, Gurupi, Tocantins, Brasil, markel.26@hotmail.com. 2 Programa de Pós-Graduação em Produção Vegetal, Universidade Federal do Tocantins, Campus Gurupi, Rua Badejós, Lote 7, Chácaras 69/72, Zona Rural, CEP 77402-970, Caixa Postal 66, Gurupi, Tocantins, Brasil, saulolima@uft.edu.br. RESUMO: O centro-norte do Brasil é uma região com forte presença de solo concrecionário, que apesar de apresentar desvantagem do ponto de vista agronômico, não impede sua utilização na agricultura, pecuária ou silvicultura. Mediante a observação de estandes agrícolas com culturas neste tipo de solo, surgiu a hipótese de que concreções de petroplintita interferem negativamente. O objetivo do trabalho foi de verificar o crescimento e desenvolvimento de algodão (Gossypium hirsutum) cultivado em solo com a presença de nódulos de petroplintita e na ausência deles. Plintossolo Pétrico Concrecionário foi coletado na camada 0-0,20 m e parte do solo foi peneirado de modo que concreções maiores de 3,10 mm de diâmetro fossem retiradas, deixando assim dois tratamentos, solo com concreções e sem concreções petroplintita. O algodão cultivado em solo sem petroplintita teve maior crescimento aos 21 e 28 dias após a emergência (DAE), assim como maior taxa de crescimento absoluto. Médias de área foliar também foram maiores no algodão cultivado em solo sem petroplintita, 94,36 cm2, ao passo que plantas de algodão cultivadas em solo com petroplintita tiveram média de 46,80 cm2. Assim sendo, conclui-se que concreções de petroplintita interferem no desenvolvimento e crescimento do algodoeiro. Palavras-chave: concreções, petroplintita, culturas anuais, restrição radicular, manejo do solo. COTTON INITIAL GROWTH CULTIVATED IN CONCRETIONARY PETRIC PLINTHOSOL ABSTRACT: The central-north of Brazil is a region with strong presence of concretionary soil, which, despite presenting disadvantages from the agronomic point of view, do not prevent their use in agriculture, livestock or forestry. Due to the observation of agricultural stands with crops in this type of soil, is hypothesized that plinthite ironstones concretions in the soil interfere negatively. The objective was to verify the growth and development of cotton (Gossypium hirsutum) cultivated in soil with the presence of plinthite ironstones and in the absence of them. Concretionary Petric Plinthosol were collected in the 0-0,20 m layer and part of the soil was sieved so that concretions larger than 3.10 mm in diameter were removed, thus leaving two treatments, soil with and without plinthite ironstones. Cotton grown in soil without ironstones showed higher growth at 21 and 28 days after emergence (DAE) as well in the absolute growth rate. Means of leaf area were bigger on cotton cultivated soil without ironstone, 94,36 cm2, while cotton growth in soil with ironstone showed means 46,80 cm2. Therefore, it is concluded that plinthite ironstones concretions interfere in the development and growth of cotton crops. Keywords: concretions, plinthite ironstones, annual crops, root restriction, soil management.

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Water requirement and single and dual crop coefficients of sesame cultivated in the coastal tablelands of Brazil

da Silva,

do Nascimento Araújo Júnior,

da Rocha

et al. 2024

Irrigation and Drainage

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Sesame irrigation is essential in drought‐prone regions. However, information about the water needs of sesame is scarce. Therefore, the objective of this study was to determine crop evapotranspiration (ETc) and the sesame crop coefficient (Kc) during the rainy (S1) and dry (S2) seasons in the coastal tablelands of Alagoas, Brazil. The BRS Seda cultivar was grown in Rio Largo, Alagoas, Brazil, between 2021 and 2022. A system with 25 drainage lysimeters was installed to estimate the daily and cumulative ETc and the Kc for the entire crop cycle. The ETc was partitioned into transpiration (T) and evaporation (E), and the basal crop coefficients (Kcb) and soil evaporation coefficients (Ke) were subsequently estimated. The daily and cumulative ETc were 3.04 mm day−1 and 450.4 mm cycle−1, respectively, in S1 and 3.52 mm day−1 and 440.1 mm cycle−1, respectively, in S2. Regardless of the season, T was the main water flux (74%–80% of the ETc). The mean values of Kc were similar for S1 (0.79) and S2 (0.75), and Kcb and Ke followed the same trend as T and E, respectively. The accumulated ETc and Kc of sesame cultivated in the coastal tablelands of Alagoas, Northeast Brazil, are similar for the rainy and dry seasons.

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Growth Dynamics of Sesame Cultivars

Cited by 5 publications

References 13 publications

Economic Evaluation and Effectiveness of Herbicides Applied in Pre-Emergency in the Sesame1

Economic Evaluation and Effectiveness of Herbicides Applied in Pre-Emergency in the Sesame1

Crescimento Inicial De Algodão Cultivado Em Plintossolo Pétrico Concrecionário

Water requirement and single and dual crop coefficients of sesame cultivated in the coastal tablelands of Brazil

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