Adubação Fosfatada para Alta Produtividade de Soja, Milho e Cereais de Inverno Cultivados em Rotação em Latossolos em Plantio Direto no Centro-Sul do Paraná

Vieira, Renan Costa Beber; Fontoura, Sandra Mara Vieira; Bayer, Cimélio; Moraes, Renato Paulo de; Carniel, Eduardo

doi:10.1590/01000683rbcs20140463

Cited by 16 publications

(20 citation statements)

References 13 publications

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“…Despite the addition of nutrients above the recommended rate (OM 150, MF 150), there was no significant increase in grain yield, regardless of the source used, with the exception of the 21.4% increase in bean yield from the MF 150 treatment compared with the MF 100 treatment. Despite possible small increases in yield, rates of fertilizers above the recommended rate are unfeasible because they bring virtually no economic gains (CQFS -RS/SC, 2016; Tian et al, 2019;Vieira et al, 2015).…”

Section: Dry Matter Production and Grain Yieldmentioning

confidence: 99%

Agronomic efficiency of organomineral fertilizer in sequential grain crops in southern Brazil

et al. 2020

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The use of organomineral fertilizers in agriculture instead of mineral fertilizers is a way to add organic compounds to the soil, potentially improving its properties and crop production. Our objective was to evaluate the agronomic efficiency of an organomineral fertilizer manufactured from poultry litter and mineral fertilizers. The experiment was carried out in a Humic Cambisol in the subtropical region of Brazil, with high organic matter content, low phosphorus content, and very high potassium content. The study consisted of six treatments: mineral fertilizer (monoammonium phosphate, KCl, and urea), at rates of 100 and 150% of the technical recommendation; organic fertilizer (poultry litter), at 100% rate; organomineral fertilizer (poultry litter + monoammonium phosphate), at rates of 100 and 150%; and control treatment (without fertilization). Between 2015 and 2017, common bean (Phaseolus vulgaris), wheat (Triticum aestivum L.), and corn (Zea mays L.) were sequentially cultivated. Before performing the experiment and at the end of the fourth crop, chemical properties of the soil were analyzed in the 0‐ to 10‐ and 10‐ to 20‐cm layers. The use of fertilizers increased crop yield, but there was no difference between the three fertilizer sources or between the 100 and 150% rates of the technical recommendation. Chemical properties of the soil were altered in a similar manner with fertilization, regardless of the fertilizer source used. According to the results, the organomineral fertilizer can replace mineral fertilizers with equivalent performance.

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Section: Dry Matter Production and Grain Yieldmentioning

confidence: 99%

Agronomic efficiency of organomineral fertilizer in sequential grain crops in southern Brazil

et al. 2020

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“…For the combined yield analysis of the different growing seasons, crops and locations, the results were expressed as relative grain yield (RY), which was based on the yield of the control treatment (no lime in liming treatments; no P in P experiments and no K in K experiments) compared to the maximum yield of the crops (RY = 100) in the respective seasons and locations, calculated by equation 1, as described in detail by Vieira (2014) and Vieira et al (2015).…”

Section: Evaluation Of Crop Yieldsmentioning

confidence: 99%

Sampling Layer for Soil Fertility Evaluation in Long-Term No-Tillage Systems

Vieira

Fontoura

Bayer

et al. 2016

Rev. Bras. Ciênc. Solo

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ABSTRACT:In no-tillage (NT) systems, there is no plowed layer since the soil is not tilled. Thus, the soil layer for fertility evaluation can be defined as the one in which the fertility indices are affected by the surface application of lime and fertilizers and soil properties have the closest relationship with crop yields. The objective of this study was to determine the most appropriate soil layer under long-term NT for sampling for fertility evaluation in the South-Central region of Paraná, Brazil. A total of 99 field experiments of crop rotations were performed, including soybean, corn, barley, wheat, and white oat, all on Oxisols (Hapludox). Despite the surface application, lime and fertilizers increased base saturation (V) and available K to a depth of 0.20 m. The relationship with crop yields was high for V and low for available K for both soil layers (0.00-0.10 and 0.00-0.20 m); for P, however, the relationships with soybean and corn yields were strongest in the 0.00-0.20 m layer. Thus, considering the soil layer fertilized by the surface application of lime and potassium fertilizers and the highest relationship of soil P contents with the yield of the main crops of the crop rotation, the 0.00-0.20 m layer is the most appropriate for soil fertility evaluation under long-term no-tillage systems.

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“…Vieira et al (2015) also found decreased critical values for soybean and corn in the central-southern region of Paraná when evaluating crop response to P in the soil. They ascribed the increased P demand of winter cereals to drought and cold during cultivation, restricting diffusion of nutrients in the soil.…”

Section: Critical Soil-test K Valuementioning

confidence: 89%

Potassium Fertilization for Long Term No-Till Crop Rotation in the Central-Southern Region of Paraná, Brazil

Vieira

Fontoura

Bayer

et al. 2016

Rev. Bras. Ciênc. Solo

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Fertilization programs for annual crops in the state of Paraná, southern Brazil, are based on studies that focused on conventional tillage and were established more than 30 years ago. The primary purpose of this study was to assess potassium (K) fertilization on long-term (>30 years) no-tillage soybean, corn, wheat, and barley crops grown in rotation on Oxisols in the central-southern region of Paraná. A total of 47 experiments were carried out from 2008 to 2013, three of which addressed K calibration and the other 44, crop response to K fertilization. Critical K soil-test value and interpretation classes were established from the ratio between relative crop yield [RY = (yield without K/max yield) × 100] and soil K levels. Winter cereals were found to be more demanding of K than were soybean and corn; also, the former governed critical K soil-test value for crop rotation: 0.23 cmol c dm -3 in the 0.00-0.20 m soil layer. Recommended fertilization rates for soils in the low and medium soil K levels were established by using the build-up approach for soil correction; and those for the high and very high soil K levels were established by removing K at harvest and assessing economic return in crop response experiments. The K rates calculated for the high yield classes exceeded those currently recommended for use in Paraná.

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Adubação Fosfatada para Alta Produtividade de Soja, Milho e Cereais de Inverno Cultivados em Rotação em Latossolos em Plantio Direto no Centro-Sul do Paraná

Cited by 16 publications

References 13 publications

Agronomic efficiency of organomineral fertilizer in sequential grain crops in southern Brazil

Agronomic efficiency of organomineral fertilizer in sequential grain crops in southern Brazil

Sampling Layer for Soil Fertility Evaluation in Long-Term No-Tillage Systems

Potassium Fertilization for Long Term No-Till Crop Rotation in the Central-Southern Region of Paraná, Brazil

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