Poda de raízes e adubação para crescimento do cafeeiro cultivado em colunas de solo

V., Víctor Hugo Álvarez; Dias, Luiz Eduardo; Leite, Paulo Batista; Souza, Ronessa Bartolomeu de; Ribeiro, Eduardo Pontual

doi:10.1590/s0100-06832006000100012

Cited by 13 publications

(9 citation statements)

References 7 publications

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“…After the incubation period the soil was placed in pots with a capacity of 1.5 dm 3 and a macronutrient solution was applied in the following doses: P = 300 mg dm -³ (NaH 2 PO 4 .H 2 O), K = 100 mg dm -³ (KCl) and S = 40 mg dm -³ (K 2 SO 4 ) as suggested by Passos (1994) Alvarez et al (2006). Fertilization with macro and micronutrients was performed for both species and based on recommendations for perennial species, since there is no recommendation for them.…”

Section: Methodsmentioning

confidence: 99%

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: Methodsmentioning

confidence: 99%

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

et al. 2017

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“…A adubação TABELA 1: Características químicas da amostra do solo utilizado para a produção de mudas de cássia-rosa (Cassia grandis Linnaeus f.). TABLE 1: Chemical analysis of the sample of soil used in the seedling production of Cassia grandis Linnaeus f. Alvarez et al (2006).…”

Section: Materiais E Métodosunclassified

CRESCIMENTO E QUALIDADE DE MUDAS DE Cassia <i>grandis Linnaeus</i> f. EM RESPOSTA À ADUBAÇÃO FOSFATADA E CALAGEM

Freitas¹,

Paiva²,

Leite³

et al. 2017

Ciênc. Florest.

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RESUMOO objetivo deste estudo foi avaliar o crescimento e a qualidade de mudas de Cassia grandis Linnaeus f. (cássia-rosa) em função da adubação fosfatada e da calagem. Os tratamentos foram representados por um fatorial de seis níveis de fósforo (0, 120, 240, 360, 480 e 600 mg dm -3 ) por cinco níveis de saturação por bases do substrato (3,5 (original), 25, 40, 55, 70%), sendo dispostos no delineamento em blocos ao acaso, com quatro repetições. Aos 65 dias após a repicagem, foram medidos a altura da parte aérea (H), o diâmetro do coleto (DC), a massa de matéria seca da parte aérea (MSPA), massa de matéria seca de raízes (MSRA) e massa de matéria seca total (MST), e calculada a relação MSPA/MSRA e o índice de qualidade de Dickson (IQD). A adubação fosfatada teve influência significativa em todas variáveis estudadas. A dose de fósforo adequada para a produção de mudas de qualidade de Cassia grandis nas condições estudadas, na saturação por bases de 25%, é de 600 mg dm -3 . Palavras-chave: produção de mudas; nutrição de plantas; fósforo. ABSTRACTThis study aimed at evaluating the growth and seedling quality of Cassia grandis Linnaeus f. in response to liming and phosphate fertilization. The treatments were arranged in a factorial design of 6 phosphorus levels (0, 120, 240, 360, 480 and 600 mg dm -3 ) by 5 base saturation levels (3,5 (original), 25, 40, 55, 70 %), in randomized blocks with four replicates. The height of the aerial part (H), collar diameter (DC), dry matter of shoot (MSPA), dry matter of root (MSRA), and total dry matter (MST) were determined at 65 days after the transplanting. The relation between dry matter of shoot and dry matter of root (MSPA/ MSRA) and Dickson quality index (IQD) were calculated at this stage. There were significant effects from the phosphate fertilization to all studied variables. Based on this study, the recommended P dose for quality seedling production of Cassia grandis is 600 mg dm -3 , for 25% of substratum's base saturation. Keywords: seedling production; plant nutrition; phosphorus. INTRODUÇÃOA expansão agrícola e a alta demanda por produtos madeireiros aumentaram a exploração dos remanescentes florestais nativos, resultando em altas taxas de desmatamento, que culminaram na degradação de extensas áreas no Brasil devido ao seu abandono após a perda da capacidade produtiva ou manejo incorreto. A revegetação dessas áreas é fundamental para melhorar as características físicas e químicas do solo, fornecendo, por meio da cobertura vegetal, a proteção necessária para diminuir a perda de solo por erosão (SILVA et al., 2011).

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“…The P dose 474.46 mg dm -3 generated the highest height (27.78 cm), which was within the limit established by Gonçalves et al (2005) for good quality seedlings (20 to 35 cm height). Collar diameter is another feature reflecting seedling survival and initial growth in the field (Souza et al, 2006); however, the maximum diameter was recorded at P doses higher than 600 mg dm -3 .…”

Section: Resultsmentioning

confidence: 99%

“…Fertilizer application was conducted in 20-day intervals after germination. A solution with micronutrients was applied in the first fertilization according to the following dosage and sources: 0.81 mg dm -3 of B (H 3 BO 3 ), Alvarez et al (2006).…”

Section: Methodsmentioning

confidence: 99%

Growth and Quality of Leucochloron incuriale Seedlings Subjected to Liming and Phosphorus

2019

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Leucochloron incuriale can be used in projects to restore degraded areas and for logging purpose. Soil has been used in nurseries to produce seedlings; however, most soil types in Brazil have low nutrient availability and high acidity level. The aim of the current study is to assess the effect of liming and phosphate fertilization on the growth and quality of Leucochloron incuriale seedlings. Treatments were arranged in factorial design with five base saturation levels -3.5 (original), 25, 40, 55 and 70% -and six P levels -0, 120, 240, 360, 480 and 600 mg dm -3 -in completely randomized blocks with four repetitions. The morphological features and their relations were assessed 82 days after planting. Phosphorus levels had significant effect on most of the assessed traits. The recommended P dose was 475 mg dm -3 .

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Poda de raízes e adubação para crescimento do cafeeiro cultivado em colunas de solo

Abstract: RESUMO

Cited by 13 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

CRESCIMENTO E QUALIDADE DE MUDAS DE Cassia <i>grandis Linnaeus</i> f. EM RESPOSTA À ADUBAÇÃO FOSFATADA E CALAGEM

Growth and Quality of Leucochloron incuriale Seedlings Subjected to Liming and Phosphorus

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