Sesame seed Production in Function of Populational Density

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DOI:

https://doi.org/10.17921/1415-6938.2025v29n2p321-331

Abstract

This study aimed to evaluate the effect of plant population density on the agronomic characteristics and seed quality of sesame. Sesame seeds of the BRS-Seda cultivar were sown in a randomized block design with four plant population densities and a row spacing of 0.80 m, divided into four replications. The agronomic characteristics evaluated were plant height, height of first capsule insertion, number of branches, number of capsules per plant, lodging index, yield, and initial and final plant stand.For seed quality, a completely randomized design with four replications was used. The evaluated seed quality parameters included moisture content, purity analysis, thousand-seed weight, germination, field emergence, accelerated aging, and electrical conductivity. Means were compared using the Scott-Knott test at a 5% probability level, with statistical analysis performed using the Sisvar software.Sesame cultivation presents variability in the number of capsules per plant, without a defined standard. When correlating yield and final stand, it was observed that in the denser planting treatment, the number of plants per linear meter was four times higher than in the least dense treatment, although the number of fruits per plant was greater in the latter. Thus, when cultivated at a density of 50 plants per meter, sesame showed higher yield compared to the other planting densities. It was evident that increased plant density influences seed quality, and that lower planting density promotes a greater number of branches and fruits. Yield increases with higher sowing density. 

Keywords: Sesamum indicum L. Plant Arrangement. Productivity. Physiological Quality.

Resumo

O presente trabalho teve como objetivo avaliar o efeito da densidade populacional de plantas sobre as características agronômicas e qualidade de sementes de gergelim. As sementes de gergelim da cultivar BRS-Seda, foram semeadas em blocos casualizados com 4 densidades populacionais e espaçamento de 0,80 m entre linhas, divididos em 4 repetições. As características agronômicas avaliadas foram altura das plantas, altura da inserção da 1ª cápsula, número de ramificações, número de cápsulas por planta, índice de acamamento, produtividade e o estande inicial e final. Para a qualidade de sementes, o delineamento utilizado foi inteiramente casualizado com 4 repetições e as qualidades avaliadas foram umidade, análise de pureza, peso de 1000 sementes, germinação, emergência em campo, envelhecimento acelerado e condutividade elétrica. As médias foram comparadas pelo teste de Scott-Knott a 5% de probabilidade pelo programa computacional Sisvar. A cultura do gergelim é variável quanto ao número de cápsula por planta, não mantendo um padrão definido. Quando se relaciona a produtividade e o estande final da cultura, observou-se que no tratamento adensado o número de plantas por metro linear foi quatro vezes maior do que o menos adensado, embora o número de frutos por planta seja superior. Desta forma, quando cultivado sobre densidade de 50 plantas m-1 o gergelim apresentou maior produtividade quando comparado com as demais densidades de plantio. Pode-se evidenciar que o adensamento influencia a qualidade das sementes e que o plantio menos adensado proporciona maior número de ramificações e de frutos. A produtividade é superior com o aumento da densidade de semeadura.

Palavras-chave: Sesamum indicum L. Arranjo de Plantas. Produtividade. Qualidade Fisiológica.

 

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Published

2025-06-02

How to Cite

DE ALMEIDA, Tanismare Tatiana; DOS SANTOS OLIVEIRA, Andréa; GONÇALVES BASTOS, Leonardo; SILVA FILHO, Pedro. Sesame seed Production in Function of Populational Density. Ensaios e Ciência: Ciências Biológicas, Agrárias e da Saúde, [S. l.], v. 29, n. 2, p. 321–331, 2025. DOI: 10.17921/1415-6938.2025v29n2p321-331. Disponível em: https://ensaioseciencia.pgsscogna.com.br/ensaioeciencia/article/view/13679. Acesso em: 6 jun. 2025.

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