Hydroponic production of ornamental sunflower with cooling of the nutrient solution and planting density

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-07-31 DOI:10.1590/2447-536x.v29i2.2570

Luís Augusto Magalhães Antoniacomi, P. B. Luz, Marcella Karoline Cardoso Vilarinho

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引用次数: 0

Abstract

Abstract The temperature of the nutrient solution is one of the main obstacles of hydroponic production in hot climates and can affect the nutrient absorption of plants. Additionally, the hydroponic cultivation of cut flowers is rarely done, and hence, there is a lack of studies on this topic. The objective of this experiment was to determine the ideal temperature of the nutrient solution as well as the influence of the plant density factor for hydroponic cultivation in NFT (Nutrient Film Technique) of the cultivar Girassol de Jardim Amarelo Alto, ISLA ® . The experiment was installed in a greenhouse, with 50% shading. The experiment adopted a completely randomized design in a factorial scheme with plots subdivided in space, with the main plots composed of two densities (15 and 30 plants m-2) and the subplots of four temperatures of the nutrient solution (20, 25, 30 °C and uncontrolled temperature) with three replications each. The variables analyzed were plant height, stem diameter, internal and external diameter of the flower, number of leaves, number of buds and flowers, dry and fresh root mass, dry and fresh shoot mass, and cultivation cycle. The data were submitted to an analysis of variance using the statistical software SISVAR. The density of 15 plants m-2 proved to be more efficient, presenting plants of commercialization standard. Cooling the nutrient solution did not improve the production and quality of sunflower flowers.

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营养液冷却及种植密度对观赏向日葵水培生产的影响

摘要营养液温度是炎热气候条件下水培生产的主要障碍之一，会影响植物对养分的吸收。此外，鲜切花的水培栽培很少，因此缺乏这方面的研究。本试验的目的是确定营养液的理想温度以及植物密度因子对ISLA®品种Girassol de Jardim Amarelo Alto (irassol de Jardim Amarelo Alto) NFT(营养膜技术)水培栽培的影响。试验在温室内进行，遮阳50%。试验采用全随机因子设计，小区空间细分，主小区由2个密度(15株m-2和30株m-2)和4个营养液温度(20、25、30℃和无控温度)组成，每个小区3个重复。分析的变量为株高、茎粗、花内径和外径、叶数、芽数和花数、干鲜根质量、干鲜梢质量和栽培周期。使用统计软件SISVAR对数据进行方差分析。15株m-2的密度效率较高，达到商业化标准。冷却营养液并不能提高向日葵花的产量和品质。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.