Micronutrients in Soybeans in the State of São Paulo

Mascarenhas, H. A. A.; Esteves, José Antônio de Fátima; Wutke, Elaine Bahia; Gallo, Paulo Boller

doi:10.3738/1982.2278.1102

Cited by 11 publications

(11 citation statements)

References 10 publications

(12 reference statements)

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“…The soybean plant presents variable B requirements according to its cycle phase (vegetative or reproductive) (SANTOS et al, 2008). Plants need the micronutrients for innumerous physiological processes during their development, during cell division, in the metabolism of nucleic acid, in the germination of pollen grains and growth of the pollen tube, in the synthesis of amino acids and proteins and in the internal transport of sugars, starches, nitrogen (N) and phosphorus (P) (MASCARENHAS et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…The low B mobility due to its complex forms and low solubility make it difficult to be redistributed from more mature plant tissues. Thus, B is necessary in constant supply during the vegetative and reproductive stages of the plants (MASCARENHAS et al, 2014). The B application via soil or foliar is widely used in many crops as a strategy to improve the survival of flowers, fruit quality and stress tolerance.…”

Section: Introductionmentioning

confidence: 99%

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Doses, methods and times of application of boron in soybean under field conditions

Silva¹,

Silva²,

Pelá³

et al. 2020

Biosci. J.

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The boron (B) fertilization in soybean is important to ensure great yields. Boron correction must be applied in deficient soils repairing losses, exports and leaching. The objective of this study was to evaluate the effects of doses, methods and times of application of B in soybean B content and yield. The field experiments were conducted during the 2015/16 and 2016/17 cropping seasons and set as a randomized block design with nine treatments (0, 0.5, 1, 1.5, 2 kg ha-1 of B, 0.5 kg ha-1 of B mixed with NPK (02-28-18) in furrow during sowing, foliar application with 0.3 kg ha-1 of B in V4 soybean stage, foliar application with 0.3 kg ha-1 of B in R1 soybean stage, and foliar application of 0.15 kg ha-1 in V4 plus 0.15 kg ha-1 of B in R1 soybean stage) and four replications. Boric acid was the B source and the variables analyzed were: B leaf content, B exported in seeds, number of pods per plant, number of seeds per pod, weight of 100 seeds (g) and productivity (kg ha-1). The levels of B in leaf were between 30.1 and 43.8 mg kg-1 and between 65.0 and 92.6 mg kg-1 in the 2015/16 and 2016/17 growing season, respectively. Exports of B in seeds were estimated between 166 and 248 g ha-1 and between 208.9 to 260.8 g ha-1 in the 2015/16 and 2016/17 growing season, respectively. Great productivity (3,820 kg ha-1) was observed in the 2016/17 growing season, with an estimated dose of 0.95 kg ha-1 of B.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Doses, methods and times of application of boron in soybean under field conditions

Silva¹,

Silva²,

Pelá³

et al. 2020

Biosci. J.

View full text Add to dashboard Cite

show abstract

“…The intensive land use, crop rotation and low organic matter (O.M.) contents provide lower availability of micronutrients and the plants consequently end up with deficiency symptoms (Mascarenhas et al, 2014). The chemical imbalance of the soil caused by unbalanced fertilization, either by nutrient surplus or deficit, is another factor able to generate micronutrient deficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The chemical imbalance of the soil caused by unbalanced fertilization, either by nutrient surplus or deficit, is another factor able to generate micronutrient deficiency. The micronutrients most studied for soybean crops are Mn, B, Zn and Mo (Zahoor et al, 2013;Kobraee et al, 2014;Mascarenhas et al, 2014;Bender et al, 2015;Rechiatu et al, 2015). Studies carried out in several regions of Brazil report deficiency or acute toxicity of several elements in the soil, where Mo, Co, Zn, Cu, Mn and B have higher frequency of deficiency, especially in Cerrado soils (Sfredo and Oliveira, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effects of micronutrients application on soybean yield

Barbosa¹,

Fabiana²,

Rezende³

et al. 2016

Aust J Crop Sci

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Soil fertilization with micronutrients increases micronutrient levels in cultivated areas providing yield gains of different cultures in different production systems. Therefore, the objective of this study was to estimate the agronomic efficiency of a powder fertilizer (a source of micronutrient; 6.8% Mn, 3.9% Zn, 2.1% Fe, 1.2% Cu and 1.1% B), applied to the soil in the agronomic performance of the soybean crop. The experiment was carried out under field conditions, in an Oxisol. The random block design was used, with five treatments and four replicates. The treatments consisted of five doses of the fertilizer: 0, 33.33 kg ha-1 , 66.66 kg ha-1 , 133.32 kg ha-1 and 66.66 kg ha-1 + 1.4 ton ha-1 of calcium oxide. The contents of Mn, Zn and Fe increased in the soil in all treatments, but no effect was observed in leaf contents with the application. The levels of Zn and Mn are adequate. The dose 133.32 kg ha-1 leads to an increase in the productivity of soybean plants in the Cerrado biome.

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“…Some authors (Kaya & Higgs, 2001;Anwaar et al, 2015;Roosta et al, 2018) reported that the decrease in chlorophyll content may be caused by both zinc deficiency and toxicity. Because, zinc is directly involved with the process of photosynthesis, nitrogen metabolism, respiration, and protein synthesis in plants (Malavolta, 2006;Cardoso et al, 2012;Mascarenhas et al, 2014). The cultivar Thaís had more Zn absorption, hence more Zn content in the leaves (Figure 1B).…”

Section: Agronomic Traits Of Curly Lettuce Submitted To Zinc Biofortificationmentioning

confidence: 99%

Agronomic biofortification with zinc in curly lettuce cultivars

Graciano

Jacinto

Silveira

et al. 2020

Agraria

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In underdeveloped countries, zinc deficiency is a public health problem. The main foods consumed in these countries have low levels of the nutrient, making their consumption insufficient to meet the minimum daily requirements. Therefore, the aim of this study was to evaluate agronomic biofortification with zinc in curly lettuce cultivars. The experiment was carried out at the Universidade Federal de Uberlândia -Monte Carmelo Campus, using a complete randomized block design in a 4 × 5 factorial scheme with four replications. The factors consisted of four curly lettuce cultivars (Brida, Isabela, Thaís, and Vanda) and five doses of leaf zinc (0, 400, 800, 1200 and 1600 g ha -1 of Zn). The following traits were evaluated: zinc leaf content, plant height, SPAD index, total fresh mass, stem diameter, head diameter, number of leaves per plant, and estimated average yield. Data were subjected to analysis of variance by the F test (α = 0.05) and means were compared by Tukey test at 5% probability and regression analyzes. According to the results obtained, the cultivar Thaís can be considered the lettuce with highest leaf zinc content and the most biofortified. It is advisable to use 700 g ha -1 of leaf zinc to obtain biofortified lettuce with increased yield.

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Micronutrients in Soybeans in the State of São Paulo

Cited by 11 publications

References 10 publications

Doses, methods and times of application of boron in soybean under field conditions

Doses, methods and times of application of boron in soybean under field conditions

Effects of micronutrients application on soybean yield

Agronomic biofortification with zinc in curly lettuce cultivars

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