Application of superphosphate complexed with humic acid in an area of
            sugarcane

Zavaschi, Eduardo; Ferraz‐Almeida, Risely; Faria, L. A. G.; Otto, Rafael; Vitti, André César; Vitti, Godofredo César

doi:10.5935/1806-6690.20200010

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…A superior performance of organomineral fertilizer in increasing P stocks in soil was expected owing to the high P content in mineral fertilizer (P 2 O 5 ; 14.0%) and organomineral fertilizer (P 2 O 5 ; 8.0%). Zavaschi et al (2020) monitored the P availability in soil with P fertilizer and humic substances (organic matter), and showed an increase in labile P in the soil. Other studies have also presented a positive effect of organic matter in P fertilizers, which directly affected the crop yield (Maluf et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

Organomineral fertilizer as an alternative for increasing potato yield and quality

Ferreira

Rebouças

Almeida

et al. 2022

Rev. bras. eng. agríc. ambient.

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Organomineral fertilizer has great potential to replace synthetic fertilizers. The goal of this study was to determine an optimal substitution rate of organomineral fertilizer for mineral fertilizer to increase potato yield and quality. The experimental design was a randomized complete block with four replicates and six treatments, namely four substitution rates of organomineral fertilizer application (25, 50, 75, and 100% of mineral fertilizer demand), one rate of mineral fertilizer application (100% of mineral fertilizer demand), and the control (no fertilizer application). The organomineral application rates were tested as an alternative to substitute 25 to 100% of mineral fertilizer. The potato yield (total and in-class) and quality and plant and soil nutrient contents were monitored. The pH and total soluble solid contents had positive correlations with yield. Potatoes accumulated higher contents of K > N > P in the leaves, stems, and tubers. The organomineral fertilizer application rate of 3.7 t ha-1 (equivalent to 100% of mineral fertilizer demand) was the optimal rate to increase potato yield and quality. Organomineral fertilizer is a viable alternative to increase potato quality and yield and to increase plant and soil nutrient contents.

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Section: Resultsmentioning

confidence: 99%

Organomineral fertilizer as an alternative for increasing potato yield and quality

Ferreira

Rebouças

Almeida

et al. 2022

Rev. bras. eng. agríc. ambient.

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“…Rosa et al (2018) reported that HA in P fertilizer was able to reduce P adsorbed in both clayey (Oxisol) and sandy (Arenosol) soils incubated for 60 days; this reduction was explained by the competition/complexation promoted by carboxylic groups of HA (soil-metal-HA and P-metal-HA), where P solubility was not precipitated and/or strongly adsorbed in soil (Guardado et al 2007;Delgado et al 2002). In a field experiment with sugarcane, Zavaschi et al (2020) showed that the application of P complexed with humic acid had an inferior performance on the accumulation of dry matter and P contents in the plant compared with simple superphosphate. However, phosphorus complexed with humic acid presented a higher P assimilation efficiency indicating that P was metabolized more efficiently.…”

Section: Introductionmentioning

confidence: 99%

Dynamic of P Flux in Tropical Acid Soils Fertilized with Humic Acid–Complexed Phosphate

Zavaschi

Faria

Almeida

et al. 2020

J Soil Sci Plant Nutr

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Soils are characterized by high phosphorus (P) immobilization, considering the major limiting factor for agricultural production in Brazil. Phosphate fertilizers complexed with humic acids (HA) have been presented as an alternative to inhibit P immobilization in soils; however, little is known regarding its efficiency or its effect on soil P dynamics when associated with liming. The objective was to investigate labile moderately and non-labile P changes in sandy and clayey soils under application of distinct P sources and liming. Tropical soils were incubated using 200 mg kg −1 of P (simple superphosphate-SSP and SSP + HA), associated or not with calcium oxide. Check-plots were run in both soils without any P addition and/or no liming. After 60, 90, and 180 days of incubation, P contents were fractionated into P inorganic (Pi) and organic (Po), in the following pools: labile (P AER and P BIC), moderately labile (P HCl and P HID-0.1), and non-labile fractions (P HID-0.5 and P residual). There was a P flux between non-labile and labile fractions, controlled by the use of P fertilizer and liming. In sandy soil, the P addition promoted a clear P flux from non-labile to labile fractions; however, in clayey soil, there was a reverse P flux. The lack of P addition promotes a negative balance in soil with a decrease of labile fractions, mainly when associated with liming. Therefore, inputs are necessary to avoid soil P depletion.

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Phosphorus Fertilizer Reapplication on Sugarcane Ratoon: Opportunities and Challenges for Improvements in Nutrient Efficiency

Zambrosi

Fernando²

2020

Sugar Tech

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Application of superphosphate complexed with humic acid in an area of sugarcane

Cited by 7 publications

References 2 publications

Organomineral fertilizer as an alternative for increasing potato yield and quality

Organomineral fertilizer as an alternative for increasing potato yield and quality

Dynamic of P Flux in Tropical Acid Soils Fertilized with Humic Acid–Complexed Phosphate

Phosphorus Fertilizer Reapplication on Sugarcane Ratoon: Opportunities and Challenges for Improvements in Nutrient Efficiency

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