Capacidade vegetativa e trocas gasosas em mudas de Pereskia aculeata Plum em diferentes substratos

Santos, Cleberton Correia; Goelzer, Ademir; Silvério, Juliana Milene; Scalon, Silvana de Paula Quintão; Zárate, Néstor Antônio Heredia; Vieira, Maria do Carmo

doi:10.14808/sci.plena.2019.110201

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…The good gas exchange performance of seedlings from the sludge + biochar substrate can be attributed to the higher growth of plants grown in this treatment, which increases plant physiological activity, and to the nutritional richness of this substrate. This situation corroborates the work of Santos et al (2019), in which the highest mean gas exchange of orapró-nobis seedlings grown in substrate with chicken litter occurred as a function of the nutrient increment of this organic waste. The authors also observed that the higher efficiency of carboxylation (A/Ci) promoted by this substrate resulted in the potentiation of the photosynthetic rate, a situation also A = photosynthesis; gs = stomatal conductance; E = transpiration; A/Ci = instantaneous carboxylation efficiency; A/E = instantaneous water use efficiency; ns = not significant by Tukey's test; Averages followed by the same letter do not differ statistically, in the columns, by Tukey test.…”

Section: /8supporting

confidence: 90%

Use of biochar in the composition of organic substrates for the production of papaya seedlings

Souza

Natale

Mesquita

et al. 2021

Agraria

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The technical aspects that involve the production of seedlings should be well studied to reduce the mistakes made in this phase. The present work aimed to evaluate biomass production, gas exchange and nutrient accumulation in papaya seedlings grown on substrates from organic residues, with or without the addition of green coconut shell biochar. The work was conducted in a greenhouse at the Federal University of Ceará, in Fortaleza, CE, Brazil. The experimental design adopted was completely randomized, consisting of eight treatments and four repetitions, with ten plants per repetition. The eight treatments comprised the substrates: composting sewage sludge, composting green coconut shell, composting carnauba bagana, commercial substrate Turfa Fértil®, composting sludge + biochar, composting green coconut shell + biochar, composting bagana + biochar and commercial substrate + biochar. Biometric analyzes, gas exchange and accumulation of mineral elements were performed. Papaya seedlings showed higher quality when they were grown with sewage sludge, sludge + biochar and bagana + biochar, while the commercial substrate was not efficient, leading to a lower result for all variables. The addition of biochar was beneficial in all treatments in which it was used.

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Section: /8supporting

confidence: 90%

Use of biochar in the composition of organic substrates for the production of papaya seedlings

Souza

Natale

Mesquita

et al. 2021

Agraria

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“…Este aumento está associado a maior disponibilidade de nitrogênio decorrido da mineralização da matéria orgânica. Santos et al (2019), avaliando a capacidade vegetativa e fotossintética de Pereskia aculeata Plum em diferentes substratos, verificaram melhores respostas em mudas nutridas com cama de frango. Figura 3 -Teor de clorofila total em plantas de manjericão cultivadas sob ambiente sombreado e substrato com cama de frango.…”

Section: Resultsunclassified

Pigmentos fotossintéticos em plantas de manjericão nutridas com cama de frango sob ambiente sombreado / Photosynthetic pigments in basil plants nutrited with chicken bed under a shadowed environment

Silva¹,

Souza²,

Santos³

et al. 2022

BJDV

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RESUMOO crescimento e teor de óleo essencial em plantas aromáticas são influenciados pela intensidade luminosa, teor de clorofila e a nutrição mineral. Neste contexto, objetivou-se avaliar a influência da cama de frango semidecomposta no incremento de teores relativos de clorofila em plantas de manjericão sob ambiente sombreado. A pesquisa foi desenvolvida em casa de vegetação da Universidade Federal do Recôncavo da Bahia, no município de Cruz das Almas-BA, Brasil. O delineamento experimental foi inteiramente casualizado constituído por três concentrações de cama de frango 0, 2,5 e 5,0 % com 8 repetições, totalizando 24 parcelas amostrais. As plantas foram aclimatizadas em ambiente sombreado, através de telado coberto por malha preta com 50% de irradiância solar. Após 60 dias de aclimatização, foram avaliados os teores relativos dos pigmentos fotossintéticos (clorofilas 'a', 'b', total e relação a/b) utilizando o medidor eletrônico de clorofila Falker modelo CFL 1030 no limbo foliar entre os horários das 6:00 ás 8:00 h. Os resultados obtidos foram submetidos a análise de variância utilizando-se o programa estatístico "R", quanto ao efeito significativo foram estimados os modelos de regressão linear e quadrática. Concluíram-se que plantas de manjericão crescidas sob ambiente sombreado apresentaram maiores teores de clorofila a, b e total quando cultivadas na concentração de cama de aviário a 2,5 % do volume do substrato. A maior relação dos teores de clorofila a/b foi observada em plantas nutridas com 0,0% e 5,0% do fertilizante orgânico.

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Production of Pereskia aculeata seedlings combining substrates and cutting diameters

Souza,

Ferreira,

Mota

et al. 2023

Pesqui. Agropecu. Trop.

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Seedling production is one of the most important stages of plant cultivation, with quality mainly depending on the substrate and plant material used. This study aimed to evaluate the production of Pereskia aculeata seedlings combining substrates and cutting diameters. The experimental design was completely randomized, in a 5 × 3 factorial arrangement, corresponding to five substrate combinations (commercial, kapok, palm, commercial + kapok and commercial + palm) and three cutting diameter ranges (0.5-3.0, 3.1-5.5 and 5.6-8.0 mm). The following parameters were evaluated: plant height, leaf length and width, number of shoots and leaves, root length, shoot and root fresh mass, shoot and root dry mass, total fresh and dry mass and Dickson quality index. There was a significant interaction effect between substrates and cutting diameters on the seedlings formed, except for number of shoots, leaf length and root dry mass. Seedlings of higher quality can be achieved with larger cutting diameters combined with commercial substrate. The palm and kapok substrates can be used alternatively when combined with larger cutting diameters.

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Capacidade vegetativa e trocas gasosas em mudas de Pereskia aculeata Plum em diferentes substratos

Cited by 4 publications

References 19 publications

Use of biochar in the composition of organic substrates for the production of papaya seedlings

Use of biochar in the composition of organic substrates for the production of papaya seedlings

Pigmentos fotossintéticos em plantas de manjericão nutridas com cama de frango sob ambiente sombreado / Photosynthetic pigments in basil plants nutrited with chicken bed under a shadowed environment

Production of Pereskia aculeata seedlings combining substrates and cutting diameters

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