Rock phosphate combined with phosphate-solubilizing microorganisms and humic substance for reduction of plant phosphorus demands from single superphosphate

Giro, Validoro Bazoni; Jindo, Keiji; Vittorazzi, C.; Oliveira, Rui S.; Conceição, G.P.; Canellas, Luciano P.; Olivares, Fábio Lopes

doi:10.17660/actahortic.2016.1146.8

Cited by 10 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A combination of PSM and HS resulted in increased grain yield in maize and barley, a result of greater available P release and increased absorption of nutrients by plants [148,149]. Benefits from the combined use of PSM plus HS were also demonstrated in another maize experiment [22], in which treated plants had higher root and shoot biomass in relation to control plants. However, no increase in P concentration was observed, suggesting greater P use efficiency in plants treated with the combination of HS and PSM.…”

Section: Interaction Between Hs and P-solubilizing Microorganismsmentioning

confidence: 99%

Interaction between Humic Substances and Plant Hormones for Phosphorous Acquisition

Jindo

Canellas

Albacete³

et al. 2020

Agronomy

View full text Add to dashboard Cite

Phosphorus (P) deficiency is a major constraint in highly weathered tropical soils. Although phosphorous rock reserves may last for several hundred years, there exists an urgent need to research efficient P management for sustainable agriculture. Plant hormones play an important role in regulating plant growth, development, and reproduction. Humic substances (HS) are not only considered an essential component of soil organic carbon (SOC), but also well known as a biostimulant which can perform phytohormone-like activities to induce nutrient uptake. This review paper presents an overview of the scientific outputs in the relationship between HS and plant hormones. Special attention will be paid to the interaction between HS and plant hormones for nutrient uptake under P-deficient conditions.

show abstract

Section: Interaction Between Hs and P-solubilizing Microorganismsmentioning

confidence: 99%

Interaction between Humic Substances and Plant Hormones for Phosphorous Acquisition

Jindo

Canellas

Albacete³

et al. 2020

Agronomy

View full text Add to dashboard Cite

show abstract

“…Combinatory use of PSB and rock phosphate (RP) that are considered to be natural resources has been successful through a number of applied research investigations that demonstrated an improved agronomic RP efficiency ( Gomes et al, 2014 ; Abbasi et al, 2015 ; Giro et al, 2016 ; Bargaz et al, 2018 ). Exploitation of microbial functional traits related to P solubilization is paramount as to propose microbial-based strategies enabling increased RP use efficiency required in many high P-retention agricultural soils ( Kumar, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Phosphate Solubilizing Rhizobacteria Could Have a Stronger Influence on Wheat Root Traits and Aboveground Physiology Than Rhizosphere P Solubilization

et al. 2020

View full text Add to dashboard Cite

Limited P availability in several agricultural areas is one of the key challenges facing current agriculture. Exploiting P-solubilizing bacteria (PSB) has been an emerging bio-solution for a higher rhizosphere P-availability, meanwhile the above-and below-ground interactions that PSB would trigger remain unclear over plant growing stages. We hypothesized that PSB effects on plant growth may be greater on root traits that positively links with aboveground physiology more than the commonly believed rhizosphere P bio-solubilization. In this study, five contrasting PSB (Pseudomonas spp.) isolates (low "PSB 1 ", moderate "PSB 2 and PSB 4 " and high "PSB 3 and PSB 5 " P-solubilizing capacity "PSC") were used to investigate aboveand below-ground responses in wheat fertilized with rock P (RP) under controlled conditions. Our findings show that all PSB isolates increased wheat root traits, particularly PSB 5 which increased root biomass and PSB 3 that had greater effect on root diameter in 7-, 15-and 42day old plants. The length, surface and volume of roots significantly increased along with higher rhizosphere available P in 15-and 42-day old plants inoculated with PSB 4 and PSB 2. Shoot biomass significantly increased with both PSB 2 and PSB 5. Root and shoot physiology significantly improved with PSB 1 (lowest PSC) and PSB 4 (moderate PSC), notably shoot total P (78.38%) and root phosphatase activity (390%). Moreover, nutrients acquisition and chlorophyll content increased in inoculated plants and was stimulated (PSB 2 , PSB 4) more than rhizosphere P-solubilization, which was also revealed by the significant above-and below-ground inter-correlations, mainly chlorophyll and both total (R = 0.75, p = 0.001**) and intracellular (R = 0.7, p = 0.000114*) P contents. These findings demonstrate the necessity to timely monitor the plant-rhizosphere continuum responses, which may be a relevant approach to accurately evaluate PSB through considering below-and above-ground relationships; thus enabling unbiased interpretations prior to field applications.

show abstract

“…The PL and RP interaction effects were not detected by changes in the P and N concentrations in maize diagnostic leaves (Table 1), suggesting that there was greater efficiency in fresh shoot matter production and the dry matter of leaves + stems and cobs with the application of PL+RP (Figure 1). Giro et al (2016) reported increases in the dry matter of maize shoot and roots without, however, increasing P concentrations in both, were no differences between the treatments in the dry matter yields of the cobs. In the fall treatment applications, PL+RP increased the cob dry matter yields by 12 % compared to the C, 20 % compared to the PL, 28 % compared to the RP and 12 % compared to the PL+RP+M.…”

Section: Times Of Application Of Pl+rp+m To the Maize Silage Cropmentioning

confidence: 76%

Maize yields and carbon pools in response to poultry litter, rock phosphate and P-solubilizing microorganisms

Yagi

Quadros

Martins

et al. 2020

Sci. agric. (Piracicaba, Braz.)

View full text Add to dashboard Cite

Rock phosphate combined with phosphate-solubilizing microorganisms and humic substance for reduction of plant phosphorus demands from single superphosphate

Cited by 10 publications

References 25 publications

Interaction between Humic Substances and Plant Hormones for Phosphorous Acquisition

Interaction between Humic Substances and Plant Hormones for Phosphorous Acquisition

Phosphate Solubilizing Rhizobacteria Could Have a Stronger Influence on Wheat Root Traits and Aboveground Physiology Than Rhizosphere P Solubilization

Maize yields and carbon pools in response to poultry litter, rock phosphate and P-solubilizing microorganisms

Contact Info

Product

Resources

About