Desenvolvimento vegetativo e produção do pinhão-manso em resposta à adubação fosfatada

Silva, José Tadeu Alves da; Simão, Fúlvio Rodriguez; Alves, Jefferson Joe Moreira

doi:10.1590/0034-737x201562030012

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…There was higher RDM production at the estimated P dose of 153 mg dm -3 , corresponding to 22.4 g plant -1 (Figure 3B). These results are in agreement with the main function of P in the induction of root system growth (Corrêa et al, 2004), since P is essential for its formation due to its role as energy carrier, in addition to other functions in the plant (Silva et al, 2015).…”

supporting

confidence: 88%

Growth and nutritional efficiency of acacia seedlings in response to phosphate fertilization

Araújo¹,

Custódio²,

Santos³

et al. 2020

Agraria

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Acacia mangium Willd cultivation is a viable option to meet the growing demand for wood in the forest market. However, there is little information related to its nutritional requirements in the seedling growth phase. The objective of this study was to evaluate the growth and nutritional efficiency of acacia seedlings in response to phosphate fertilization. The experimental design was completely randomized with five treatments, and with five replications each. The treatments consisted of five phosphorus (P) doses: 0, 50, 100, 150 and 200 mg dm -3 , and triple superphosphate (46% P 2 O 5 ) was used as the mineral source. The plant height, stem diameter, leaf number, shoot, root and total dry matter, P content in leaves, stem and roots, and P efficiency of uptake, translocation and use were subsequently evaluated 120 days post-transplant. The rate of 150 mg dm -3 of P showed the best growth and efficiency results for P use. The increases observed in acacia seedlings due to the increase in P rates show the importance of adequate phosphate nutrition in the development of this species. Thus, 150 mg dm -3 of P is the recommended rate for Acacia mangium seedling cultivation.

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supporting

confidence: 88%

Growth and nutritional efficiency of acacia seedlings in response to phosphate fertilization

Araújo¹,

Custódio²,

Santos³

et al. 2020

Agraria

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“…Phosphorus is one of the nutrients that have its absorption increased by the presence of AMF in the roots (Saboya et al, 2012). This is a probable reason for the greater development of mycorrhizal plants because P increases the development of J. curcas seedlings (Silva et al, 2015;Lima et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Association and mycorrhizal dependency in Jatropha curcas L. seedlings under salt stress

et al. 2017

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Association and mycorrhizal dependency in Jatropha curcas L.seedlings under salt stress 1 The cultivation of Jatropha curcas L. for biodiesel production is possible in salinized areas; however, biomass production is limited in these soils. Arbuscular mycorrhizal fungi (AMF) are a promising alternative for bioremediation in salinized soils. Yet, salinity also affects the AMF at the time of colonization and, in this case, the symbiosis is not always established. Therefore, the aim of this study was to test the hypotheses that three AMF species commonly found in saline soils are associated with J. curcas and if seedlings previously inoculated with these AMF are more tolerant to salt stress. Two trials were performed: the first one was carried out in a completely randomized design with five treatments (control, Rhizophagus intraradices, Gigaspora albida, Claroideoglomus etunicatum, and the three species together) and six repetitions to investigate the formation of symbiosis among species; and the second trial was carried out in randomized blocks in a 4 × 2 factorial scheme (2, 5, 8, and 10 dS m -1 , with and without mycorrhizae) with eight repetitions to verify the development and mycorrhizal dependency (MD) of the seedlings previously inoculated, in salinized environment. The three species of AMF are associated with J. curcas both alone and together. Mycorrhizal dependency increased with salinity, indicating that J. curcas is a facultative species. The pre-colonized seedlings with AMF are an alternative to the establishment of J. curcas in salinized soils.

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“…Marcolan et al (2014) observaram interação significativa entre adubação de NPK e desenvolvimento da copa. Silva et al (2015) observaram que a aplicação de fósforo não influenciou a altura das plantas, entretanto aumentou o desenvolvimento dos ramos e do caule e elevou a produção do pinhão-manso. Freiberger (2012) afirma que a ausência da adubação fosfatada é a mais limitante ao crescimento inicial do pinhão-manso, entretanto doses próximas a 50 mg dm -3 de P são suficientes para promover melhor desenvolvimento inicial da cultura.…”

Section: P 18unclassified

“…Os recentes estudos com pinhão-manso, visando desenvolver um sistema de produção confiável para a cultura, desmistificaram a propalada rusticidade dessa planta, pois é muito atacada por pragas e doenças e possui elevada exigência nutricional com acentuado acúmulo de minerais em suas partes vegetativas e reprodutivas (SATURNINO et al, 2005;CARVALHO et al, 2013;SILVA et al, 2015;LINHARES et al, 2016). O pinhão-manso é uma cultura com poucas pesquisas sobre seu comportamento em campo e o conhecimento técnico sobre essa cultura no norte de Minas Gerais ainda é limitado.…”

Section: Introductionunclassified

Crescimento do pinhão-manso em resposta à adubação fosfatada e à compactação de um Latossolo Vermelho Amarelo sob cultivo em ambiente protegido

et al. 2021

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O presente trabalho objetivou quantificar o crescimento de plantas jovens de pinhão-manso submetidas a variações de doses de fósforo (P) e de massas específicas de um solo Latossolo Vermelho Amarelo. Previamente, na micro-região de Januária, foi coletada uma amostra de solo na camada de 20 a40 cm, certificando-se, em laboratório, da baixa disponibilidade de P – 1,4 mg dm-3 de P – a fim de se aplicar os tratamentos de interesse. Foram aplicadas doses de 0, 106 e 318 mg dm-3 de P, utilizando a fonte superfosfato simples; e os solos foram compactados até atingirem massas específicas de solo iguais a 1,53; 1,72 e 1,91 kg dm-3, em esquema fatorial completo, totalizando nove tratamentos. O cultivo foi em vasos de PVC com dimensões de 19,4 cm de diâmetro interno e 23,5 cm de altura, com volume útil de 5,912 dm3 de solo. O crescimento das plantas foi determinado por meio de mensurações de altura de planta, diâmetro de colo, número de folhas e consumo hídrico ao longo do ciclo; e de massa seca de raízes, caule e folha a época da coleta do experimento. Para análise estatística dos dados fez-se análise de variância, teste de média Tukey e análise de regressão. De modo geral, as características de crescimento das plantas apresentaram resposta mais pronunciada à adubação fosfatada comparada à compressão física testada. As raízes de pinhão-manso foram incapazes de penetrar camada de solo com massa específica de solo igual a 1,91 kg dm-3.

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Desenvolvimento vegetativo e produção do pinhão-manso em resposta à adubação fosfatada

Cited by 4 publications

References 2 publications

Growth and nutritional efficiency of acacia seedlings in response to phosphate fertilization

Growth and nutritional efficiency of acacia seedlings in response to phosphate fertilization

Association and mycorrhizal dependency in Jatropha curcas L. seedlings under salt stress

Crescimento do pinhão-manso em resposta à adubação fosfatada e à compactação de um Latossolo Vermelho Amarelo sob cultivo em ambiente protegido

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