Qualidade fisiológica de sementes de milho tratadas com molibdênio

Pereira, Francisco Rafael da Silva; Brachtvogel, Elizeu Luiz; Cruz, Simério Carlos Silva; Bicudo, Sílvio José; Machado, Carla Gomes; Pereira, José Roberto

doi:10.1590/s0101-31222012000300012

Cited by 10 publications

(12 citation statements)

References 11 publications

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“…The highest seedling response to the product containing Cu + Mo + Zn + Mn, occurred on DAE 3 and 7, can be attributed to the effect of molybdenum on the plants' metabolism, favoring nitrate assimilation (PEREIRA et al, 2012). Similar data for shoot dry matter of plants originated both from treated and non-treated seeds were obtained by Diniz et al (2006).…”

Section: Resultssupporting

confidence: 56%

Physiological traits of the initial growth in rainfed rice plants in response to seed treatment with micronutrients

Olsen¹,

Pedó²,

Aisenberg³

et al. 2015

Biosci. J.

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ABSTRACT:The study aimed to analyze the effect of seed treatment with micronutrients on the growth of rainfed rice plants. Treatments consisted in the absence of micronutrient application, single applications or a combination of five micronutrients applied to seeds: compound Zinc + Molybdenum (Mo 2.3, Zn 3.5 % w/v) in a dose of 2 mL kg -1 seed; Copper + Molybdenum + Zinc + Manganese (6.7 Cu, 3.2 Mo, 15 Zn; 9.4% Mn w/v) at a dose of 3 mL kg -1 seed; Zinc (100% Zn p/v) at a dose of 2 mL kg -1 seed, Manganese (50% Mn w/v) at a dose of 2ml kg -1 seed, Boron (3% B w/v) at a dose of 3 mL kg -1 . Plants were collected at, three, seven and eleven days after emergence with readings of leaf area and estimates for dry weight of shoots and roots. From these data calculations were derived for the total plant dry mass, shoot/root ratio, ratio of leaf area to leaf mass and the specific leaf area. The compound mixture of Cu + Mo + Zn + Mn provided the highest seedling dry matter accumulation and highest leaf area, while single zinc applications stimulated the accumulation of root dry mass. Seed treatment with micronutrients provides better performance for the initial growth in rainfed rice plants.

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Section: Resultssupporting

confidence: 56%

Physiological traits of the initial growth in rainfed rice plants in response to seed treatment with micronutrients

Olsen¹,

Pedó²,

Aisenberg³

et al. 2015

Biosci. J.

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“…Entretanto, esses resultados diferem dos alcançados por Oliveira et al (2010) que apontam o Mo como um dos micronutrientes que mais contribuiu para aumentar a germinação e o vigor em sementes de mamona, após a embebição das sementes em solução contendo Mo, além de contribuir na redução da percentagem de sementes mortas. Pereira et al (2012), concluíram que a qualidade fisiológica de milho é influenciada negativamente por doses crescentes de molibdênio na mistura com o fungicida líquido de suspensão concentrada carboxina+thiram sobre as sementes.…”

Section: Cultivarunclassified

Translocação de molibdênio em plântulas de feijoeiro

Carvalho¹,

Xavier²,

Meneguzzo

et al. 2019

COLLOQ AGRARIAE

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Resumo O objetivo do trabalho foi avaliar o efeito da aplicação de molibdênio via tratamento de sementes sobre a qualidade fisiológica de sementes de feijão (Phaseolus vulgaris L.) e o teor do elemento no tecido vegetal em diferentes estádios de desenvolvimento da plântula. Os tratamentos foram constituídos pela aplicação de molibdênio via sementes, utilizando solução de molibdato de amônio (127g L-1), equivalentes a 0; 22; 44; 66 e 88g 100 kg-1. Foram utilizadas sementes de feijão, cultivares Expedito e Valente. O delineamento experimental foi inteiramente casualizado, com quatro repetições, avaliando-se separadamente cada uma das cultivares. A qualidade fisiológica das sementes foi avaliada pelos testes de germinação, primeira contagem da germinação, teste de frio, envelhecimento acelerado, emergência em campo, índice de velocidade de emergência, comprimento de plântulas e matéria seca de parte aérea e de raiz. Para a determinação do teor de molibdênio, realizou-se a semeadura em bandejas utilizando-se como substrato areia lavada. Aos 8, 10, 12 e 14 dias após a semeadura realizou-se a coleta das plântulas. Determinaram-se a massa secadas plântulas e em espectrofotômetro UV-Vísivel a 405 nmo teor de molibdênio da parte aérea. Os dados obtidos permitem afirmar que há possibilidade de aplicar molibdênio em feijão, via tratamento de sementes, em doses de até 88 g100kg-1 , sem causar prejuízos à qualidade fisiológica, tendo o teor de molibdênio nas plântulas aumentado linearmente com as respectivas doses aplicadas.

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“…Mo also had a low content at 0.30 ± 0.01 mg kg -1 . Pereira and Partners [29] showed that approximately 0.08 mg kg -1 of Mo in corn seeds are sufficient to allow normal growth and development of plants.…”

Section: Elements In Corn Grainsmentioning

confidence: 99%

Corn Cultivation for Silage: Evaluation of Elemental Composition in the Soil and Plants by Neutron Activation Analysis

Silva

Menezes

Marques

2019

JEAI

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Corn cultivation for silage requires special soil management and constant applications of fertilizers and agricultural pesticides to achieve satisfactory yield levels. This study was carried out on a farm that has grown corn for several years. The soil does not have adequate management in terms of fertility and fertilization. The matrices collected were soil, roots, leaves and grains in a corn silage area to investigate which chemical elements are present and their concentrations. The neutron activation analysis (NAA) by k0-standardization method was applied on elemental concentration determination. In this technique, the sample is submitted to a neutron flux, in order to produce radioactive isotopes of the nuclei present in the original sample. In the k0 method, the sample is irradiated together with a neutron flux monitor, usually gold (Au), in the same irradiation position and standards of the interested element are not necessary. Several samples can be irradiated simultaneously when stacked inside the irradiation vessel, intercalated with neutron flux monitors. The irradiations were carried out in the TRIGA MARK I IPR-R1 research reactor at Nuclear Technology Development Centre/Brazilian Commission for Nuclear Energy (CDTN / CNEN). In the analysis, As, Ba, Br, Ca, Ce, Co, Cr, Cs, Cu, Eu, Fe, Hf, K, La, Mo, Na, Nd, Rb, Sb, Sc, Sm, Ta, Tb, Th, U, Yb and Zn were identified in the samples. Although the site studied lacks adequate management of soil fertility and fertilization, Ca, Cu, K, Mo and Zn were determined and their presences are important because they are essential for corn development. Adequate content for the cultivation of silage corn were verified by assessing these nutrients and their translocation in the plant.

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Qualidade fisiológica de sementes de milho tratadas com molibdênio

Cited by 10 publications

References 11 publications

Physiological traits of the initial growth in rainfed rice plants in response to seed treatment with micronutrients

Physiological traits of the initial growth in rainfed rice plants in response to seed treatment with micronutrients

Translocação de molibdênio em plântulas de feijoeiro

Corn Cultivation for Silage: Evaluation of Elemental Composition in the Soil and Plants by Neutron Activation Analysis

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