Doses de nitrogênio no crescimento inicial e nutrição de plantas de guanandi

Ciriello, Valeria; Guerrini, Iraê Amaral; Backes, Clarice

doi:10.1590/01047760201420041445

Cited by 19 publications

(19 citation statements)

References 6 publications

(5 reference statements)

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“…Similar results, with a positive response to the application of nitrogen fertilizers, have been observed: Apuleia leiocarpa (Nicoloso et al, 2001), Eremanthus erythropappus (Venturin et al, 2005), Dalbergia nigra (Marques et al, 2006b), Samanea inopinata (Cruz et al, 2006), Piptadenia gonoacantha (Marques et al, 2009), Swietenia macrophylla (Tucci et al, 2009), Mimosa caesalpiniaefolia (Gonçalves et al, 2010), Astronium fraxinifolium (Feitosa et al, 2011), Calophyllum brasiliense (Ciriello et al, 2014), Tabebuia serratifolia (Goulart et al, 2016), Schizolobium amazonicum (Carvalho et al, 2016).…”

Section: Discussionsupporting

confidence: 66%

NITROGEN SOURCES AND DOSES ON GROWTH AND QUALITY OF SEEDLINGS OF Cassia grandis AND Peltophorum dubium 1

et al. 2017

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-The demand for seedlings of Brazilian native tree species has increased due to the growing number of recovery projects for degraded areas. In order to obtain success in the revegetation, high quality seedlings should be used. Among the factors that affect the quality of seedlings there is nitrogen fertilization, since nitrogen (N) is one of the nutrients required in the largest amount by plants. Thus, this study aimed to evaluate the response of Cassia grandis and Peltophorum dubium seedlings to N sources and doses. The treatments were represented by a factorial of three sources (ammonium nitrate, calcium nitrate and ammonium sulfate) by five N doses (0, 50, 100, 150 and 200 mg dm -3 ), arranged in randomized complete block design, with four replicates. After 145 days of sowing, were obtained: height (H), collar diameter (CD), shoot dry matter (SDM), root dry matter (RDM), total dry matter (TDM), and calculated the dry matter mass ratio of shoot and root (SDM/RDM) and the Dickson Quality Index (DQI). Nitrogen fertilization resulted in growth gains and improved the seedlings quality of both species. However, the sources and the source × doses interaction were not significant for all variables. For the studied substrate (Red-Yellow Latosol) the recommended dose is 185 mg dm-3 of N for the production of Peltophorum dubium seedlings. For the production of Cassia grandis seedlings was not able to find the optimum dose of N.Keywords: Plants nutrition; Seedling production; Nitrogen fertilization. FONTES E DOSES DE NITROGÊNIO NO CRESCIMENTO E QUALIDADE DE MUDAS DE CASSIA GRANDIS E PELTOPHORUM DUBIUMRESUMO -A demanda por mudas de espécies nativas tem aumentado devido ao crescente número de projetos de recuperação de áreas degradadas. Para o sucesso da revegetação, devem ser utilizadas mudas de qualidade, e entre os fatores que influenciam a qualidade, destaca-se a fertilização nitrogenada, uma vez que o nitrogênio (N) é um dos nutrientes requeridos em maior quantidade pelas plantas. O objetivo deste estudo foi avaliar a resposta das mudas de Cassia grandis L. f. e Peltophorum dubium (Spreng.) Taub. às fontes e doses de N. Os tratamentos foram representados por um fatorial de três fontes (nitrato de amônio, nitrato de cálcio e sulfato de amônio) e cinco doses de N (0, 50, 100, 150 e 200 mg dm -3 ), dispostos no delineamento em blocos casualizados, com quatro repetições. Após 145 dias da semeadura, foram obtidos: altura (H), diâmetro de coleto (DC), massa de matéria seca da parte aérea (MSPA), da raiz (MSR), e total (MST), e calculada a relação entre a massa de matéria seca da parte aérea e raiz (MSPA/MSR) e o índice de qualidade de Dickson (IQD). A fertilização nitrogenada resultou em ganhos no crescimento e qualidade das mudas de ambas as espécies estudadas. As fontes e a interação fontes × doses não foram significativas para todas as variáveis estudadas. Para as condições estudadas, recomenda-se a dose de 185 mg dm-³ de N para a produção de mudas de Peltophorum dubium. Para a produção de mudas de Cassia grandi...

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Section: Discussionsupporting

confidence: 66%

NITROGEN SOURCES AND DOSES ON GROWTH AND QUALITY OF SEEDLINGS OF Cassia grandis AND Peltophorum dubium 1

et al. 2017

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“…The demand for hardwood has increased greatly and commercial plantations of these species are not being managed to keep up with the rhythm in the market growth (Petrauski et al, 2012). Thus, in order to meet the hardwood demand, it has become necessary to increase commercial plantations of native and exotic species and adopt management practices that ensure efficiency and high yield in the forests plantations (Ciriello et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Fertilization in the Initial Growth of Khaya senegalensis A. Juss Plants Under Greenhouse Conditions

Araújo¹,

Júnior²,

Barretto³

et al. 2019

JAS

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African mahogany is an exotic specie and its cultivation has increased in Brazil due to the high value of its timber on the international market. Nutrition with nitrogen is an important factor for species with high biomass production and specific studies on this species are essential. The present study aimed to assess the initial growth of African mahogany plants submitted to nitrogen fertilization. The experiment was set up and carried out in a greenhouse, with 7 dm3 plastic pots using a oxisoil sampled from the surface layer. A completely randomized experimental design was used with five treatments and six replications. The treatments consisted of five N levels: 0, 40, 80, 120 and 160 mg dm-3, using urea as the source. The following were assessed at 180 days: height, stem diameter, leaf, stem, root and total dry matter, N content in the leaves in the African mahogany leaves. The African mahogany seedlings had high N demand and responded positively to the N used and the growth variables was positive with increase in N level. However, as it presented increasing linear effect, the N level can not be estimated, that would provide the maximum initial development for this plant species.

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“…The treatments consisted of five Zn concentrations: 0, 2.5, 5, 10 and 20 mg dm -3 , obtained by zinc sulfate fertilizer. Based on the physical-chemical analysis of the used soil, all treatments received liming to raise the soil base saturation of 60% and fertilization with nitrogen (80 mg dm -3 ), phosphor (150 mg dm -3 ), potassium (80 mg dm -3 ), and micronutrients: manganese (1.5 mg dm -3 ), boron (0.5 mg dm -3 ), copper (0.5 mg dm -3 ) and molybdenum (0.1 mg dm -3 ) (Ciriello et al, 2014). The sources used for liming and fertilization were PRNT 92 dolomitic limestone, urea, triple superphosphate, potassium chloride, manganese sulfate, boric acid, copper sulfate and sodium molybdate, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…preservation of natural resources (Ciriello et al, 2014). Wood from reforestation is a promising future option, and this practice is growing.…”

mentioning

confidence: 99%

Initial growth of African mahogany plants in response to zinc fertilization

Araújo¹,

Cunha²,

Dâ€TMAbadia³

et al. 2017

Afr. J. Agric. Res.

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African mahogany (Khaya senegalensis A. Juss) has been an important option to supply the increasing demand for noble forest products for the Brazilian furniture industry. In the present study, the objective was to evaluate the initial development of mahogany plants in response to different doses of zinc. The experiment was carried out inside a greenhouse, in the experimental area of the State University of Goiás, Ipameri Campus, in 7 dm 3 plastic containers, and using soil samples, identified as Dystrophic Red-Yellow Latosol (Oxisol), as substrate. The experimental design was completely randomized, with five treatments and five replications, totaling 25 experimental units. The treatments consisted of five Zn concentrations: 0, 2.5, 5, 10 and 20 mg dm -3 , obtained by zinc sulfate fertilizer. At 150 days, the measurements of the plant height, the root crown diameter, dry matter mass of leaves, stem, root and total were evaluated. The tested increasing zinc doses did not promote increased plant growth. African mahogany presented low zinc requirement in the early stages of development for the studied edaphoclimatic condition, and no application of zinc via fertilizers was required. This fact may resulting from the natural concentration of 0.2 mg dm -3 of Zn in the used soil, which was enough to supply the nutritional demand of the plants in the first five months of development.

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Doses de nitrogênio no crescimento inicial e nutrição de plantas de guanandi

Cited by 19 publications

References 6 publications

NITROGEN SOURCES AND DOSES ON GROWTH AND QUALITY OF SEEDLINGS OF Cassia grandis AND Peltophorum dubium 1

NITROGEN SOURCES AND DOSES ON GROWTH AND QUALITY OF SEEDLINGS OF Cassia grandis AND Peltophorum dubium 1

Nitrogen Fertilization in the Initial Growth of Khaya senegalensis A. Juss Plants Under Greenhouse Conditions

Initial growth of African mahogany plants in response to zinc fertilization

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