Crescimento e produção de grãos da soja sob diferentes doses e fontes de fósforo em solos distintos

Silva, Francisco Nildo da; Neto, Antônio Eduardo Furtini; Carneiro, Leandro Flávio; Magalhães, Ciro Augusto de Souza; Carneiro, Daniella Nogueira Moraes

doi:10.1590/s1413-70542009000500004

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…It can be seen that the highest index of chlorophyll a was on the dose 128.5 kg ha -1 of P 2 O 5 , with chlorophyll a index = 29.2, as shown in Figure 8. For cowpea, Silva et al (2010) obtained in two soluble P sources a quadratic effect on chlorophyll content according to the phosphate fertilization, with values of 41 and 56 units for doses 66 and 86 kg ha -1 employing simple and triple superphosphate, respectively.…”

Section: Resultsmentioning

confidence: 99%

Different Phosphorus Doses in Grain Sorghum Under Cerrado Conditions, Goiás, Brazil

Carvalho

Alves

Veloso

et al. 2023

Rev. Agric. Neotrop.

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Sorghum bicolor is an important grain species used for food and feed production, where P is a key element/nutrient in grain production. The effect of increasing phosphorus doses to grain sorghum in Cerrado soil with sandy texture and low fertility in Cerrado conditions was evaluated. The study was conducted at the Pântano Farm, Jataí, Goiás, Brazil. The sorghum cultivar used was AG 1085. The doses of 0 (control), 40, 80, 120, and 160 kg ha-1 of P2O5 were used, whose source was triple superphosphate 46% of P2O5, with five replications each, designed in random blocks. The evaluated variables were stem length, stem diameter, leaf area, shoot dry mass, leaf phosphorus content, nutrient accumulation, fertilization efficiency, chlorophyll a, and chlorophyll b. For the variables shoot dry mass in (g plant-1), leaf phosphorus content, dry mass expressed in (kg ha-1), and chlorophyll b (CFI), the effect for the application of P doses in cultivar had a linear effect. The analysis of variance of the regression showed a quadratic effect for the variables stem length, stem diameter, leaf area, and phosphorus use efficiency, and for chlorophyll a (CFI), showing a maximum point at the best dose and best values of the variables. The application of Phosphorus influenced the development of the grain sorghum cultivar. The 129 kg ha-1 of P2O5 had the highest efficiency of phosphorus fertilization corresponding to 82.02%.

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Section: Resultsmentioning

confidence: 99%

Different Phosphorus Doses in Grain Sorghum Under Cerrado Conditions, Goiás, Brazil

Carvalho

Alves

Veloso

et al. 2023

Rev. Agric. Neotrop.

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“…Under the current conditions of this study, the P concentration in the 0-20 cm layer was 54.95 mg dm -3 ( For the number of legumes per plant and the number of grains per legume, the combinations "+ U. ruziensis + BRS Nova Era + ORG1", "+ U. ruziensis + BRS Nova Era + ORG2", "+ U. ruziensis + BRS Tucumaque + SS" and "+ U. ruziensis + BRS Nova Era + SS" are associated with these variables. Single superphosphate and triple superphosphate are the most common sources of soluble P. Due to the adsorption of clay minerals and iron and aluminum oxides, these substances are applied in high doses in highly weathered soils (Silva et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

Performance of Cowpea as a function of residues of organomineral fertilizers applied in corn crop

Sousa,

Zuffo,

Ratke

et al. 2024

CLCS

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Organomineral fertilizers can be an excellent alternative through exploitation of the residues left by application in previous crops. Therefore, the objective of this study was to evaluate the agronomic characteristics of cowpea fertilized with residual organomineral fertilizers from the first corn crop in southern Maranhense. The experimental design was randomized blocks, arranged in a split-plot design, with three replications. Two cowpea cultivars (BRS Tucumaque and BRS Nova era) were sown in the plots. The residues of three phosphate fertilizers were sown in the subplot (two of which were organomineral fertilizers and one phosphate fertilizer (single superphosphate). At cowpea harvest, five plants were collected per plot for the following variables: number of nodes on the main stem at maturity, number of legumes per plant, number of grains per legume and weight of one thousand grains, and yield in kg ha-1. The cowpea cultivars are influenced by the cropping system (with and without U. ruziensis and organomineral sources). However, in soils with high phosphorus contents, the absence of U. ruziensis and fertilization or the use of organomineral or super simple fertilization promoted higher grain yields. The cultivar BRS Tucumaque had the highest grain yield. Organomineral and mineral fertilizer residues showed effective alternatives for increasing phosphorus availability in areas with Urochloa ruziziensis.

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“…Phosphorus use efficiency depends on several factors, among others, soil management, the type of fertilizer (source of P, solubility, composition, and richness in P), and the application method (Resende et al 2006;Motomiya et al 2004;Zhang et al 2019). Both factors affect soil P availability and, as a result, crop yield (Montoniya et al 2004;Silva et al 2009;Sá et al 2013;Vieira et al 2013Vieira et al , 2015Valadão et al 2017). The application of P fertilizers to the soil surface is the most common practice, which has a reduced economic cost in comparison with other methods (Olibone and Rosolem 2010) but it is not always the best alternative for plant nutrition and the environment.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Wheat and Soybean Yields in a Subtropical Oxisol Through Effective P Fertilization Strategies

Fink

Borga

Frosi

et al. 2020

J Soil Sci Plant Nutr

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Phosphorus (P) deficiency limits agricultural production in tropical and subtropical soils, where soil mineralogy is dominated by kaolinite, iron, and aluminum oxides. The aim of this work was to compare two application methods of P, to the soil surface and to the sowing line, to determine the most effective strategy to increase wheat and soybean yields on an oxidic subtropical soil in Brazil under field conditions. Additionally, four inorganic P fertilizers (monoammonium phosphate (MAP); single superphosphate (SS); triple superphosphate (TP); and natural rock phosphate (NP)) in a wheat crop and four different P rates (zero, 0; low, 45; medium, 90; and high, 180 kg ha −1 of P 2 O 5) of TP in a soybean crop were tested after being applied to the soil surface and to the sowing line. A significant increase in yield (54%) was only found when TP was applied to the sowing line in comparison with the soil surface in wheat plants, probably due to its high solubility. However, the application method did not produce a significant effect in soybean yields, probably because this crop has a different P requirement and root distribution pattern than wheat. In the case of P fertilizers applied to the soil surface, higher wheat yields were observed with NP and MAP in comparison with TP. Finally, a linear increase was observed in soybean yields while increasing the P rate, finding significant differences between the plants fertilized with the highest P rate and the non-P-fertilized plants (24% yield increase in the first case). Our results highlight the need for specific P fertilization strategies for the different crops grown on subtropical regions where soil mineralogy curbs P availability.

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Crescimento e produção de grãos da soja sob diferentes doses e fontes de fósforo em solos distintos

Cited by 6 publications

References 11 publications

Different Phosphorus Doses in Grain Sorghum Under Cerrado Conditions, Goiás, Brazil

Different Phosphorus Doses in Grain Sorghum Under Cerrado Conditions, Goiás, Brazil

Performance of Cowpea as a function of residues of organomineral fertilizers applied in corn crop

Enhancing Wheat and Soybean Yields in a Subtropical Oxisol Through Effective P Fertilization Strategies

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