Omissão de nutrientes em plantas de pinhão-manso cultivadas em solução nutritiva

Maia, Janini Tatiane Lima Souza; Bonfim, Filipe Pereira Giardini; Guañabens, R.E.M.; Trentin, Roberto; Martínez, Herminia; Pereira, Paulo Roberto Gomes; Fontes, Paulo Cézar Rezende

doi:10.1590/0034-737x201461050016

Cited by 12 publications

(11 citation statements)

References 28 publications

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“…In other studies, contrasting results about of Jatropha and other plant species were observed in treatments with fertilization. In the experiment on nutrient omission in jatropha plants grown in nutrient solution, Maia et al (2014), observed that the absence of N and P were the ones that affected the macronutrient contents in the aerial part of the jatropha plants, promoting uniform chlorosis of the leaf blades. In the study on Jatropha response to the application of irrigation levels and doses of potassium fertilization, Oliveira et al (2012), observed that only potassium fertilization, did not affect the growth of irrigated jatropha in the southern region of Minas Gerais.…”

Section: Discussionmentioning

confidence: 99%

Organic and Mineral Fertilizer on the Initial Development and Nutrition of Jatropha

Reis¹,

Silva²,

Gonçalves-Júnior³

et al. 2018

JAS

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Jatropha (Jatropha curcas L.) is an herbaceous plant, perennial, belonging to the family of Euphorbiaceaes. Jatropha’s extract is used for the harvest of fruits, high amount of nutrients and, if not properly fertilized, can lead to the impoverishment of the soil over the years of cultivation. Thus, in this present work, we have a concern with the importance of fertilization. The experiment was conducted under field conditions in the 2014/2015 agricultural year, in São Jorge do Patrocínio, State of Parana, Brazil. The experiment was conducted in a randomized block design with five replications and five treatments, totaling 25 installments. The treatments were as follows: organic fertilization (total rate: 2,800 g plant-1), mineral fertilizers with nitrogen, phosphorus and potassium (total rate: 174.4 g plant-1, and 13.2 g plant-1 of urea, 141.2 g plant-1 of superphosphate and 20 g plant-1 of potassium chloride), 75% organic fertilizer + 25% mineral, 50% organic fertilizer + 50% mineral, 25% organic + 75% mineral, applied at planting. Poultry litter was used as the organic fertilizer source, the nitrogen source was urea, the phosphorus source was superphosphate and, the potassium source was potassium chloride. Spacing of 2 × 2 m between plants and the pits with 30 × 30 × 30 cm. The evaluated variables were: plant height, stem diameter, contents macro and micronutrients in leaves. It can be concluded that there was no influence of mineral and organic fertilization on the initial growth of jatropha. As for the macronutrient levels, there were no significant differences for P and K. However, regarding the mineral fertilizer and the micronutrient content, there was a significant difference in Mn, in the treatment with total rate of mineral fertilizer and in the treatment with 25% organic fertilizer and 75% mineral fertilizer.

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Section: Discussionmentioning

confidence: 99%

Organic and Mineral Fertilizer on the Initial Development and Nutrition of Jatropha

Reis¹,

Silva²,

Gonçalves-Júnior³

et al. 2018

JAS

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“…Visualmente, a altura de plantas foi maior na ausência de calagem, influenciada possivelmente pelo maior teor de Zn, tanto nas folhas como no caule. De acordo com Maia et al (2014), a omissão de Zn em plantas de pinhão-manso afeta o comprimento e matéria seca de caules, número de folhas e a produção de massa de matéria seca de raízes.…”

Section: Resultsunclassified

Diferentes doses de calcário aumentam a absorção de nutrientes pelo pinhão-manso

2019

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Este trabalho teve por objetivo avaliar se diferentes doses de calcário, aplicadas em subsuperfície, influenciam a absorção de nutrientes em plantas de pinhão-manso (Jatropha curcas L.) em desenvolvimento inicial. O experimento foi realizado em vasos e sob condição de casa de vegetação, em que as plantas de pinhão-manso foram cultivadas em vasos de PVC, divididos em camada superficial (0-20 cm) e camada subsuperficial (20-60 cm). A camada superficial recebeu solo corrigido (11,1 t ha-1 de CaCO3 e MgCO3) e adubação com NPK. Na camada subsuperficial foi adicionado ao solo as doses de 0; 3,7; 5,6; 7,4; 11,1 e 14,9 t ha-1 de CaCO3 e MgCO3 na relação molar 4:1. Após 120 dias da emergência das plantas, avaliaram-se os teores e conteúdos de Al, P, K, Ca, Mg, Zn, Mn, Fe e Cu nas folhas, no caule e nas raízes. Em plantas de pinhão-manso, os teores de Al são maiores nos tecidos radiculares, seguido das folhas e do caule. Os teores e os conteúdos de P, K, Ca, Mg, Zn e Mn no tecido vegetal são influenciados pelo aumento das doses de calcário no solo. Os teores de Fe e Cu nos tecidos vegetais de pinhão-manso sofrem pouca influência das doses crescentes de calcário em subsuperfície.

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“…The lower production of dry weight, in function of salinity, is probably because of the physiological drought due to the reduction of the osmotic potential of the soil solution, since the roots were the most affected. The difficulty of water absorption also affects the nutrient uptake, which compromises seedling development (Maia et al, 2014). In another study, J. curcas seedlings had a decrease of 75% in total dry weight when irrigated with NaCl solution of 4.5 dS m -1 (de Oliveira et al, 2010).…”

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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Omissão de nutrientes em plantas de pinhão-manso cultivadas em solução nutritiva

Cited by 12 publications

References 28 publications

Organic and Mineral Fertilizer on the Initial Development and Nutrition of Jatropha

Organic and Mineral Fertilizer on the Initial Development and Nutrition of Jatropha

Diferentes doses de calcário aumentam a absorção de nutrientes pelo pinhão-manso

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

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