Improving the fertilizer value of sugarcane wastes through phosphate rock amendment and phosphate-solubilizing bacteria inoculation

Lopes, Cintia Masuco; Silva, Antônio Marcos Miranda; Estrada-Bonilla, Germán; Ferraz‐Almeida, Risely; Vieira, José Luís Vilela; Otto, Rafael; Vitti, Godofredo César; Cardoso, Elke Jurandy Bran Nogueira

doi:10.1016/j.jclepro.2021.126821

Cited by 35 publications

(21 citation statements)

References 41 publications

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“…B02 allows P fertilizer application rates to be reduced. In previous studies, PSB has been shown to have some potential, allowing a 33-75% reduction in the rate of P mineral fertilizers in several crops (Sahandi et al, 2019;Rosa et al, 2020;Lopes et al, 2021).…”

Section: Discussionmentioning

confidence: 98%

Differential Plant Growth Promotion Under Reduced Phosphate Rates in Two Genotypes of Maize by a Rhizobial Phosphate-Solubilizing Strain

Beltrán-Medina

Romero-Perdomo²,

Molano-Chavez³

et al. 2022

Front. Sustain. Food Syst.

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The biotechnological manipulation of phosphate-solubilizing bacteria (PSB) is gaining prominence to improve the poor phosphorus (P) availability in the soil and maintain crop yields. In this study, we investigated how Rhizobium sp. B02 inoculation influences maize crop development and whether its use reduces phosphate fertilizer rates. We conducted growth promotion assays using P fertilizer doses in two maize genotypes under greenhouse conditions. Morphometric, physiological, and productivity parameters were assessed in three phenological stages: tillering (V5), tassel (VT), and maturity (R6). Maize response was significantly influenced by both inoculation and plant genotype, showing that the plant-promoting effect of inoculation is substantially more prominent in the white endosperm than in the yellow endosperm maize genotype. The development of maize in all phenological stages was promoted by inoculation with Rhizobium sp. B02. The most significant influence of inoculation was observed on shoot dry weight, relative chlorophyll content, shoot P concentration, leaf area, photosynthetic rate, 1,000-grain weight, and grain yield. A 17% gain in grain yield, representing 20 g plant−1, was obtained by inoculation with 50% diammonium phosphate (DAP) compared with the control treatment at the same dose. The complete fertilization control was phenocopied by the white endosperm inoculated at 50% DAP in all productivity parameters. Therefore, half of the P fertilization in white endosperm was replaced by inoculation with Rhizobium sp. B02. Herein, we report the potential of a Rhizobium strain in a non-legume crop to improve P management.

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Section: Discussionmentioning

confidence: 98%

Differential Plant Growth Promotion Under Reduced Phosphate Rates in Two Genotypes of Maize by a Rhizobial Phosphate-Solubilizing Strain

Beltrán-Medina

Romero-Perdomo²,

Molano-Chavez³

et al. 2022

Front. Sustain. Food Syst.

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“…In sugarcane field experiments, the co-inoculation of A. brasilense and B. subtilis also contributed to reducing P fertilization by 75% [12]. Lopes et al [13] concluded that the application of sugarcane by-products enriched with phosphate rocks and PSBs (P. aeruginosa PSBR12, Bacillus sp. BACBR01, BACBR04, BACBR06, and Rhizobium sp.…”

Section: Discussionmentioning

confidence: 99%

“…Fiber (%), purity apparent of the juice (%), soluble solids content (Brix-%), apparent sucrose of juice (Pol-%), and total recoverable sugar (TRS-kg t −1 ; TRS is characterized as the sum of sucrose that can be converted into sugar or alcohol) were determined at Suzanápolis Sugar and Alcohol Mill laboratory. The sequence of technological quality analysis also can be assessed in Lopes et al [13]. The sugar yield (SUY-t ha −1 ) was obtained by the multiplication of stalk yield per hectare and sugarcane pol % of each plot, divided by 100.…”

Section: Evaluationsmentioning

confidence: 99%

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Inoculation with Plant Growth-Promoting Bacteria to Reduce Phosphate Fertilization Requirement and Enhance Technological Quality and Yield of Sugarcane

et al. 2022

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Phosphorus (P) is a critical nutrient for high sugarcane yields throughout its cultivation cycles, however, a higher amount of P becomes rapidly unavailable to plants due to its adsorption to soil colloids. Some plant growth-promoting bacteria (PGPBs) may be able to enhance P availability to plants and produce phytohormones that contribute to crop development, quality, and yield. Thus, this study aimed to evaluate leaf concentrations of nitrogen (N) and P, yield, and technological quality of sugarcane as a function of different levels of phosphate fertilization associated with inoculation of PGPBs. The experiment was carried out at Ilha Solteira, São Paulo—Brazil. The experimental design was randomized blocks with three replications, consisting of five phosphorus rates (0, 25, 50, 75, and 100% of the recommended P2O5 rate) and eight inoculations, involving three species of PGPBs (Azospirillum brasilense, Bacillus subtilis, and Pseudomonas fluorescens) which were applied combined or in a single application into the planting furrow of RB92579 sugarcane variety. The inoculation of B. subtilis and P. fluorescens provided a higher concentration of leaf P in sugarcane. The P2O5 rates combined with inoculation of bacteria alter technological variables and stalk yield of sugarcane. The excess and lack of phosphate fertilizer is harmful to sugarcane cultivation, regardless of the use of growth-promoting bacteria. We recommend the inoculation with A. brasilense + B. subtilis associated with 45 kg ha−1 of P2O5 aiming at greater stalk yield. This treatment also increases sugar yield, resulting in a savings of 75% of the recommended P2O5 rate, thus being a more efficient and sustainable alternative for reducing sugarcane crop production costs.

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“…Phosphatases catalyse the ester and anhydride hydrolysis and release free phosphate in the soil. Inoculation of biofertilizers improved the sugarcane yield, acid phosphatase activity and P content in soil over control [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of nanophos in agriculture to improve functional bacterial community and crop productivity

Chaudhary

Parveen

et al. 2021

BMC Plant Biol

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Background Since the World’s population is increasing, it’s critical to boost agricultural productivity to meet the rising demand for food and reduce poverty. Fertilizers are widely used in traditional agricultural methods to improve crop yield, but they have a number of negative environmental consequences such as nutrient losses, decrease fertility and polluted water and air. Researchers have been focusing on alternative crop fertilizers mechanisms to address these issues in recent years and nanobiofertilizers have frequently been suggested. “Nanophos” is a biofertilizer and contains phosphate-solubilising bacteria that solubilises insoluble phosphate and makes it available to the plants for improved growth and productivity as well as maintain soil health. This study evaluated the impact of nanophos on the growth and development of maize plants and its rhizospheric microbial community such as NPK solubilising microbes, soil enzyme activities and soil protein under field condition after 20, 40 and 60 days in randomized block design. Results Maize seeds treated with nanophos showed improvement in germination of seeds, plant height, number of leaves, photosynthetic pigments, total sugar and protein level over control. A higher activity of phenol, flavonoid, antioxidant activities and yield were noticed in nanophos treated plants over control. Positive shift in total bacterial count, nitrogen fixing bacteria, phosphate and potassium solubilizers were observed in the presence of nanophos as compared to control. Soil enzyme activities were significantly (P < 0.05) improved in treated soil and showed moderately correlation between treatments estimated using Spearman rank correlation test. Real time PCR and total soil protein content analysis showed enhanced microbial population in nanophos treated soil. Obtained results showed that nanophos improved the soil microbial population and thus improved the plant growth and productivity. Conclusion The study concluded a stimulating effect of nanophos on Zea mays health and productivity and indicates good response towards total bacterial, NPK solubilising bacteria, soil enzymes, soil protein which equally showed positive response towards soil nutrient status. It can be a potential way to boost soil nutrient use efficiency and can be a better alternative to fertilizers used in the agriculture.

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Improving the fertilizer value of sugarcane wastes through phosphate rock amendment and phosphate-solubilizing bacteria inoculation

Cited by 35 publications

References 41 publications

Differential Plant Growth Promotion Under Reduced Phosphate Rates in Two Genotypes of Maize by a Rhizobial Phosphate-Solubilizing Strain

Differential Plant Growth Promotion Under Reduced Phosphate Rates in Two Genotypes of Maize by a Rhizobial Phosphate-Solubilizing Strain

Inoculation with Plant Growth-Promoting Bacteria to Reduce Phosphate Fertilization Requirement and Enhance Technological Quality and Yield of Sugarcane

Impact of nanophos in agriculture to improve functional bacterial community and crop productivity

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