Nutrição mineral de mudas de grápia (Apuleia leiocarpa) em ARGISSOLO VERMELHO distrófico arênico: (1) Efeito da dubaçio NPK no crescimento

Nicoloso, Fernando Teixeira; Fogaça, Marco Aurélio de Freitas; Zanchetti, Flávio; Missio, Evandro Luiz

doi:10.1590/s0103-84782001000600012

Cited by 16 publications

(16 citation statements)

References 7 publications

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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: 65%

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: 65%

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

et al. 2017

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“…There are great differences among plant species in terms of the appropriate K level for initial growth (Nicoloso et al, 2001). Eucalyptus seedlings in Latossol did not respond to the application of potassium chloride, resulting in a K content of only 6.0 mg dm -3 by Table 2.…”

Section: Resultsmentioning

confidence: 99%

NPK fertilization on initial growth of physic nut seedlings in Quartzarenic Neossol

Souza

Silva

Grazziotti

et al. 2011

Rev. Bras. Ciênc. Solo

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SUMMARYBalanced fertilization is important for plant growth. There is little information on physic nut (Jatropha curcas L.) and tests with the fertilization of the species are very recent. This study evaluated the initial growth of physic nut seedlings in response to NPK rates to Quartzarenic Neossol in a greenhouse and estimated P and K critical soil levels and N, P and K in shoot dry matter after 120 days of evaluation. The treatments were arranged in a randomized, fractional factorial design (4 x 4 x 4) 1/2 , totalizing 32 treatments with three replicates, 96 experimental plots and N rates (0, 75, 150 and 300 mg dm -3 ) as urea; P rates (0, 45, 90 and 180 mg dm -3 ) as triple superphosphate and K rates (0, 50, 100 and 200 mg dm -3 ) as potassium chloride. After 120 days, the plants were harvested and some variables evaluated: plant height, stem diameter, shoot and root dry weight, macro and micronutrient levels in plant shoots, and soil chemical properties. The physic nut seedlings responded to NPK fertilizer in the initial growth phase; the response to N was negative. The recommended P and K rates were 25 and 67 mg dm -3 , respectively. The critical levels, corresponding to the recommended P rate were 13 and 74 mg dm -3 for K in soil (Mehlich-1). The N, P and K levels in the shoot dry matter of physic nut were 37.4, 2.1 and 35.7 g kg -1 , respectively. Index terms: Mineral fertilization, Jatropha curcas, oleaginous species.(

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“…A partição de biomassa entre os órgãos da planta, analisada através da relação entre matéria seca das raízes e da parte aérea de mudas de P. glomerata, foi principalmente afetada pelo tratamento de adubação com omissão de N, seguido do controle e da omissão de K e S (Figura 1B). É conhecido o fato de que o status nutricional da planta afeta o fracionamento de fotoassimilados, com reflexos na relação raiz/parte aérea (MARSCHNER, 2002;NICOLOSO et al, 2001b). Para o angico-amarelo (Peltophorium dubium), esta relação foi mais afetada no tratamento controle e naqueles com omissão de P, N e S (VENTURIN et al, 1999).…”

Section: Resultsunclassified

Caracterização das exigências nutricionais de mudas de Pfaffia glomerata em Argissolo Vermelho distrófico arênico pela técnica do nutriente faltante

et al. 2008

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RESUMO Este trabalho teve por objetivo caracterizar as exigências nutricionais de mudas de ginseng brasileiro (Pfaffia ABSTRACT This study aimed to characterize the nutritional demands of the young plants of Brazilian ginseng (Pfaffia glomerata (Spreng.) Pedersen) in a Paleudalf soil by means of the missing nutrient technique. Plantlets of P. glomerata produced in vitro and acclimatized ex vitro were used as start matter for the glasshouse experiment. Ten days after plant transfer to soil, fertilizations (by means of nutritive solutions)were done corresponding to nine treatments: control (without fertilization), complete fertilization (with macro and micronutrients), and with the omissions of N, P, K, Ca, Mg, S and micronutrients (Zn, B, Cu, Fe, Mn and Mo)

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Nutrição mineral de mudas de grápia (Apuleia leiocarpa) em ARGISSOLO VERMELHO distrófico arênico: (1) Efeito da dubaçio NPK no crescimento

Abstract: RESUMO A grápia (Apuleia leiocarpaVog

Cited by 16 publications

References 7 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

NPK fertilization on initial growth of physic nut seedlings in Quartzarenic Neossol

Caracterização das exigências nutricionais de mudas de Pfaffia glomerata em Argissolo Vermelho distrófico arênico pela técnica do nutriente faltante

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