Aclimatização de orquídea (Cymbidium sp.) em resposta à aplicação de ácidos húmicos

Cordeiro

et al. 2020

RSD

For the propagation of seedlings by cutting it is important to select an appropriate substrate. Additionally, the use of humic substances can stimulate the growth of the plants, as is already known for many species. We aimed to investigate the influence of substrates based on carnauba bagana and carbonized rice husk associated with humic substance - HS in the production of Spondia purpurea L. seedlings by cuttings. We studied three proportions (v:v) of substrates, namely, 100% carbonized rice husk; 50% carnauba bagana + 50% carbonized rice husk; 100% carbonized rice husk and four doses of the humic substance, namely, 0 g L-1; 12.5 g L-1; 25 g L-1; 50 g L-1. The experiment was arranged in a completely randomized design, in a 3x4 factorial with four replicates. There was a significant effect of HS doses and substrate interaction and HS doses on the leaf area and dry mass of the aerial part of seedling seedlings. Root volume was affected in isolation by the factors tested. The interaction responses between the substrate and doses of humic substance infer that they act in different ways on development of seriguela seedlings according to the type of substrate, therefore, it is essential to identify and choose the compiled that favors the best results. There is then a need test other substrates associated with the addition of HS, already known to condition the increase of seriguela seedlings produced by cuttings.

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Efficacy of substrate and humic substance on cuttings production of Spondia purpurea L.

Oliveira

Cordeiro

et al. 2020

RSD

“…The negative effect observed by the authors is associated with the calibration of the applied doses of humic acids, which were higher than 10 mL L -1 of the source of humic acid. For Baldotto et al (2014), the use of humic substance for better development must be at adequate concentrations for each plant species, evidencing the importance of calibrating the doses per plant species and development stage.…”

Section: Resultsmentioning

confidence: 99%

Humic substances, purified MAP and hydrogel in the development and survival of Eucalyptus urograndis

Ferreira

Rev. bras. eng. agríc. ambient.

et al. 2016

A B S T R A C TThe development and survival of Eucalyptus urograndis plants may be influenced by products based on humic fractions of the organic matter, purified MAP and soil conditioners, such as hydrogel. Thus, the present study aimed to evaluate the effect of the commercial products Fertiactyl ® , based on humic substances, purified MAP and hydrogel on the post-planting development and survival of Eucalyptus urograndis. The experiment was conducted in a randomized block design, with 25 treatments and four replicates, each of which consisted of 6 plants. The immersion of the tubes in solution with doses of Fertiactyl ® and purified MAP promoted the increase in the development and survival of the plants. In the preparation of the hydrogel, the use of solution based on Fertiactyl ® and purified MAP reduced the hydration capacity of the water-retaining polymer. With increasing doses, there was a linear increment in the electrical conductivity of the solution, exponentially reducing the hydration capacity of the polymer.Substâncias húmicas, MAP purificado e hidrogel no desenvolvimento e sobrevivência de Eucalyptus urograndis R E S U M OO desenvolvimento e a sobrevivência de plantas de Eucalyptus urograndis podem ser influenciados por produtos à base de frações húmicas da matéria orgânica, MAP purificado e condicionadores de solo, como hidrogel; assim, realizou-se o presente trabalho com o objetivo de avaliar o efeito dos produtos comerciais Fertiactyl ® à base de substâncias húmicas, MAP purificado e hidrogel no desenvolvimento e na sobrevivência em pós-plantio de Eucalyptus urograndis. O experimento foi conduzido em delineamento de blocos casualizados com 25 tratamentos e quatro repetições sendo cada repetição uma parcela composta por 6 plantas. A imersão dos tubetes em solução com doses de Fertiactyl ® e MAP purificado promoveu o aumento no desenvolvimento e na sobrevivência das plantas. No preparo do hidrogel a utilização de solução à base de Fertiactyl ® e MAP purificado reduziram a capacidade de hidratação do polímero hidro-retentor; com o aumento das doses houve aumento linear na condutividade elétrica da solução fazendo com que a capacidade de hidratação do polímero fosse reduzida exponencialmente.

“…The 10 treatments were distributed in the following order (Table 1). The HA was previously isolated and evaluated by Baldotto et al (2014). The leopard flower seeds (Belamcanda chinensis) were immersed in the solutions of the treatment for 24 hours.…”

Section: Methodsmentioning

confidence: 99%

“…The humic acids represent a short part of the organic material corresponding to the fraction of the humic soluble substance in alkaline ways. The HA application can accelerate the germination and improve the height qualities, leaf area, weight of the dry material (root and shoot) and hence oleraceous and floriculture species production (Arancon et al, 2003;Primo et al, 2011;Baldotto et al, 2014). Although at the market there are commercial products that have the same work of the HA that is to give macro and micronutrients for the plant, increasing rooting and vegetative development (Bezerra et al, 2007), with high costs that do not allow small producers to access these products.…”

Section: Introductionmentioning

confidence: 99%

Growth of leopard flower (Belamcanda chinensis) with humics acids in nursery garden

Lozada

Silveira

et al. 2021

RSD

Self Cite

Humic acids constitute a fraction of organic matter that either has direct effects on the growth and development of ornamental plants. The present study aimed to evaluate the differential growth of the leopard flower (Belamcanda chinensis) from the application of humic acids extracted from poultry litter (HAPL) and bovine manure (HABM) during the nursery garden phase. The seeds were immersed in solutions of 0, 10, 20, 30 and 40 mmol L-1 of C in HAPL and in the same way for HABM. After 150 days, the plants were collected and measured the number of leaves, plant height, fresh matter of the aerial part, dry matter of the root, total fresh matter, and dry matter of the aerial part, dry matter of the root and total dry matter. The use of the correct concentration of humic acids stimulates the growth and accumulation of total dry material in the leopard plant in the order of 33% to 58% for HAPL and HABM respectively.