Production of cut sunflower under water volumes and substrates with coconut fiber

Oliveira, Marcelo Silva de; Carvalho, Daniel Fonseca de; Gomes, Daniela Pinto; Pereira, Fernandes A. C.; Médici, Leonardo Oliveira

doi:10.1590/1807-1929/agriambi.v22n12p859-865

Cited by 5 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The transplanting, which marked the beginning of the experimental period, was carried out into 8-L pots filled with substrate composed of sandy clay soil and powdered coconut fiber in a 1:1 ratio (v/v). According to Oliveira et al (2018), in the cultivation of ornamental plants, it is common to use substrates made from agro-industrial wastes, such as coconut fiber, because it reduces the density and it is highly available in the region. The substrate had bulk density of 0.83 g cm -3 and soil water retention at 10 hPa of 0.590 cm 3 cm -3 (Brasil, 2007).…”

Section: Methodsmentioning

confidence: 99%

“…However, the association of a localized method with an automated irrigation management is advantageous in comparison to traditional systems, as it does not require operators and avoids excessive water applications (Santos et al, 2015). The automatic irrigation controller (AIC), developed by Medici et al (2010), is a low-cost alternative that has been successfully used in crops grown in the field or under greenhouse conditions (Batista et al, 2013;Gomes et al, 2014;Oliveira et al, 2018). In addition to activating the irrigation system, the AIC provides the amount of water in response to the crop's water requirement, contributing to the optimization of water use.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Production and quality of zinnia under different growing seasons and irrigation levels

Martins

Pêgo

Cruz³

et al. 2021

Ciênc. agrotec.

Self Cite

View full text Add to dashboard Cite

Zinnia (Zinnia elegans Jacq.) is a fast-growing and easy to cultivate plant that has flowers of different colors. This species has become an option to be introduced commercially in many countries as cut flower and its floral quality is influenced by different cultivation techniques. We evaluated the production and the quality of floral stems of zinnia (cv. Red California Giant) in response to growing seasons and irrigation levels. In a greenhouse located in Rio de Janeiro (Brazil), zinnia plants were grown in two cycles (autumn-winter and winter-spring) in pots with water replacement corresponding to 46, 64, 75 and 100% of their water requirement. Based on the stem length and diameter and on the flower diameter, there was variation in the quality of the stems produced in the growing seasons evaluated. All stems from the autumn-winter cycle were classified as A1 (high quality), while almost 9% of the stems from the winter-spring cycle were classified as A2 (medium quality). There was a linear growth trend in the production and quality of zinnia stems with the increase of the irrigation level in most cases, as well as significant effect of the growing seasons, with the best results of number of stems, fresh weight, length and diameter of the stem and flower diameter found in the autumn-winter cycle. The weather conditions of this cycle favor the production and quality of zinnia floral stems, and the replacement of 100% of the specie’s water requirement is recommended in both cultivation cycles.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production and quality of zinnia under different growing seasons and irrigation levels

Martins

Pêgo

Cruz³

et al. 2021

Ciênc. agrotec.

Self Cite

View full text Add to dashboard Cite

show abstract

“…O manejo adequado de água e nutrientes das culturas depende de conhecer propriedades do substrato, como o teor de nutrientes e a quantidade de água disponível, fundamentais para o manejo da irrigação em recipientes com profundidade e volume limitados. A respiração radicular, a absorção de nutrientes e o desenvolvimento das raízes dependem que o substrato proporcione equilíbrio entre porosidade de ar e capacidade de reter água durante entre as irrigações (BARRET et al, 2016;GRUDA, 2019;OLIVEIRA et al, 2018;MÜLLER, 2017;TSAKALDIMI;GANASSAS, 2016).…”

Section: Introductionunclassified

“…Além da alta capacidade de tamponamento da água da fibra de coco tornar o manejo da irrigação mais flexível, sua proporção de macroporos é favorável às raízes das plantas por drenar o excesso de água, facilitar a aeração e ainda disponibilizar bastante água. Esse material resiste à degradação microbiana e mantém as características físicas após vários ciclos de umedecimento e secagem, não reage com os nutrientes aplicados, é leve, hidrofílico, de fácil reumedecimento e tem pouca tendência à contração (KUKAL et al, 2012;MARIOTTI et al, 2020;OLIVEIRA et al, 2018).…”

Section: Introductionunclassified

Curva de retenção de água em substrato de fibra de coco para cultivos em vasos em ambiente protegido

et al. 2021

View full text Add to dashboard Cite

Um substrato com porosidade e capacidade de retenção de água adequadas possibilita maximizar a produtividade e qualidade das culturas produzidas em recipientes sob ambiente protegido. A fibra de coco é uma ótima alternativa, mas requer manejo cuidadoso da irrigação, podendo ser baseado no monitoramento do teor de água na zona radicular usando tensiômetros. Nesse sentido, objetivou-se com este trabalho determinar a curva de retenção de água em fibra de coco em vasos. A técnica usada foi a remoção de água por evaporação e medição da tensão da água com tensiômetros, com posterior pesagem dos vasos e cálculo do teor de água correspondente por diferença entre massa medida e massa do substrato seco. Um sistema de aquisição de dados foi usado para registrar as leituras dos transdutores de pressão dos tensiômetros. Os dados de tensão, quantidade de água e densidade do substrato foram usados para ajustar as curvas de retenção de água conforme modelos de regressão e o modelo de Van Genuchten. O uso de tensiômetros no substrato fibra de coco possibilitou determinar a curva de retenção de água de maneira rápida e prática, a partir de leituras de tensão quase contínuas entre 12 e 268 hPa, referentes a teores de água entre 0,37 e 0,05 cm3 cm-3. Assim, foi possível ajustar a curva de retenção de forma simples, usando modelos de regressão com elevados coeficientes de determinação. Os parâmetros hídricos obtidos do substrato são menores do que os referidos na literatura e úteis para o manejo adequado da irrigação em recipientes contendo o mesmo substrato.

show abstract

“…These characteristics give the coconut shell substrate great durability and are therefore recommended for long cycle crops such as ornamental and forest species to recover degraded areas [3]. According to [4] the structure of coconut fiber associated with its physicochemical properties makes it particularly suitable for use as a substrate.…”

Section: Introductionmentioning

confidence: 99%

Development of Anadenanthera colubrina Seedlings Subjected to Different Doses of Coconut Powder and Arbuscular Mycorrhizal for Rehabilitation of Mining Areas

Fernandes

Pereira

Silva

et al. 2020

IJPSS

View full text Add to dashboard Cite

The objective of this work was to evaluate the development of angico [Anadenanthera colubrina (Vell.) Brenan] seedlings produced with different doses of coconut powder and inoculated with arbuscular mycorrhizal fungi (AMF) in nursery and mining degraded area in the state of Sergipe (Brazil). The experimental design was in randomized blocks, with the following proportions of mineral substrate and coconut powder, with and without AMF. Angico growth was evaluated in nursery after 150 days, and height and diameter were evaluated. Later the seedlings were planted in a degraded area by sand and gravel mining and after 120 days of planting the height, diameter and survival rate were measured. In the nursery phase, the addition of coconut powder promoted a reduction in height and diameter of angico seedlings. Inoculation with AMF significantly increased the height and diameter of Anadenanthera colubrina seedlings in the nursery. However, the field phase results show that the addition of coconut powder to the substrate promotes better development in height and diameter of Anadenanthera colubrina seedlings in the mining degraded area. The conjugation of a low proportion of coconut powder with the inoculation of AMF on Anadenanthera colubrina seedlings resulted in higher survival in the planting of degraded area by mining.

show abstract

Production of cut sunflower under water volumes and substrates with coconut fiber

Cited by 5 publications

References 11 publications

Production and quality of zinnia under different growing seasons and irrigation levels

Production and quality of zinnia under different growing seasons and irrigation levels

Curva de retenção de água em substrato de fibra de coco para cultivos em vasos em ambiente protegido

Development of Anadenanthera colubrina Seedlings Subjected to Different Doses of Coconut Powder and Arbuscular Mycorrhizal for Rehabilitation of Mining Areas

Contact Info

Product

Resources

About