Dipping rice seedlings in P-enriched slurry increases grain yield and shortens days to heading on P-deficient lowlands in the central highlands of Madagascar

Rakotoarisoa, Njato Mickaël; Tsujimoto, Yasuhiro; Oo, Aung Zaw

doi:10.1016/j.fcr.2020.107806

Cited by 30 publications

(8 citation statements)

References 35 publications

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“…A similar result was reported by Asai et al (2021) in rice, where farmyard manure application increases spikelet fertility and grain yield on phosphorus-de cient conditions in Madagascar highlands. Other works have highlighted the signi cant contribution of improved P uptake in increasing grain yields (Rakotoarisoa et al 2020; Rakotoson and Tsujimoto 2020).…”

Section: Discussionmentioning

confidence: 99%

Sorghum Agronomic Performance and Soil Chemical and Microbiological Properties as Influenced by Burkina Faso Phosphate Rock-Enriched Composts

Sagnon

Iwasaki

Tibiri

et al. 2022

Preprint

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Purpose The low availability of phosphorus (P) severely limits crop production in sub-Saharan Africa. We evaluated phosphate rock-enriched composts on soil properties and sorghum growth for use as environment-friendly fertilizers. Methods Treatments were sorghum straw, compost (Comp), Phosphate Rock (BPR), BPR-enriched compost (P-Comp), BPR-soil-enriched compost (P-Comp-Soil), nitrogen-phosphorus-potassium (NPK, 60-90-30), and control without phosphorus and organic material (CT). Sorgum straw and composts were applied at 1.34 tons ha-1. The amounts of nitrogen, phosphorus, and potassium in treatments, except in CT, were adjusted to 60, 90, 30 kg ha-1, with urea, BPR, and KCl, respectively. Sorghum vr. Kapelga was cultivated and soil samples were collected on days 52, 93, and 115 (harvest) for analysis. Results NPK and P-Comp-Soil provided the best sorghum yields. Soil available P was less in these treatments. P-Comp-Soil-amended soils recorded higher populations of bacteria (16S rRNA), acid phosphatase (aphA), phosphonatase (phnX), glucose dehydrogenase (gcd) and its cofactor pyrroloquinoline quinone (pqqE) genes. Phosphate-specific transporter (pstS) and arbuscular mycorrhizal fungi (AMF) abundances were generally higher in P-Comp-Soil soils, especially at the early growth stage. This active microbial activity in the P-Comp-Soil added to its initially higher available P justified a better nutrient uptake and yields comparable to NPK. Multivariate analysis also revealed the contribution of nitrogen, carbon, and exchangeable cations in sorghum growth. Conclusion This study demonstrated that direct phosphate rock application is not effective in sub-Saharan African upland cultivation. Alternative to chemical fertilizers, soils may be amended with phosphate rock-enriched composts, a niche of beneficial microbes improving soil health.

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Section: Discussionmentioning

confidence: 99%

Sorghum Agronomic Performance and Soil Chemical and Microbiological Properties as Influenced by Burkina Faso Phosphate Rock-Enriched Composts

Sagnon

Iwasaki

Tibiri

et al. 2022

Preprint

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“…Sorghum biomass and grain yields in the NK were 34 and 27% lower, respectively, than those in the NPK treatment, highlighting the importance of P nutrition in the studied environment, further confirming that P is a limiting nutrient in the soil. Many studies have highlighted the significant contribution of improved P uptake to crop grain yields in Africa 45 , 46 . In addition, we observed 25 and 23% decreases in biomass and grain yield, respectively, in the NK compared to in the P-COMP-SOIL.…”

Section: Discussionmentioning

confidence: 99%

Amendment with Burkina Faso phosphate rock-enriched composts alters soil chemical properties and microbial structure, and enhances sorghum agronomic performance

Sagnon

Iwasaki

Tibiri

et al. 2022

Sci Rep

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Low soil available phosphorus (P) severely limits crop production in sub-Saharan Africa. The present study evaluated phosphate rock-enriched composts as locally available low-cost fertilizers for sorghum production. The treatments consisted of sorghum straw, compost (COMP), phosphate rock (BPR), BPR-enriched compost (P-COMP), BPR-rhizosphere soil-enriched compost (P-COMP-SOIL), nitrogen-phosphorus-potassium treatment (NPK, 60–39–25), and control (NK, 60–25). Sorghum straw and compost were applied at 1.34 tons ha−1. N, P, and K in all treatments, excluding the control, were adjusted to 60, 39, and 25 kg ha−1, with urea, BPR, and KCl, respectively. Sorghum vr. kapelga was cultivated and soil samples were collected at the S5, S8, and S9 growth stages. P-COMP-SOIL and NPK yielded better sorghum yields than the other treatments. The rhizosphere soil of P-COMP-SOIL had high abundance of soil bacteria and AMF, and genes involved in P solubilization, such as: acid phosphatase (aphA), phosphonatase (phnX), glucose dehydrogenase (gcd), pyrroloquinoline quinone (pqqE), phosphate-specific transporter (pstS). The superior performance of the P-COMP-SOIL was associated with its higher available P content and microbial abundance. Multivariate analysis also revealed vital contributions of N, carbon, and exchangeable cations to sorghum growth. Soils could be amended with phosphate rock-rhizosphere soil-enriched composts, as an alternative to chemical fertilizers.

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“…Thus, it is crucial to determine the optimal concentration of P to be applied and the duration of dipping. Several studies have reported that the SRD method can increase transplanted rice grain yield by 10-50% with reduced P application rates compared to broadcasting or incorporating P at transplanting in highly P-xed acidic soil conditions (Balasubramanian et al, 1995;Hooper, 1991;Kalidas-Singh and Thakuria, 2018;Lu and Jiang, 1982;Oo et al, 2020a;Rakotoarisoa et al, 2020;Talukdar et al, 2001). However, there is no research on this method for other transplanted horticultural crops like Chilli (Capsicum Annuum) or in alkaline soil.…”

Section: Introductionmentioning

confidence: 99%

A comparative study of Chilli (Capsicum Annuum) on biomass production by phosphorus application through micro-dose placement, broadcast, and optimized seedling Root-dip in P-enriched slurry

Kalidas-Singh

Swain

Thakuria

et al. 2023

Preprint

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A sustainable method of phosphorus (P) fertilizer application is needed to support crop production, due to the limited P reserves and negative environmental impact caused by excessive P application in agriculture. This study proposes a comparison of P management that enhance P nutrition of Chilli seedlings (variety: Arka Khyati) through seedling root-dipping (SRD) into P-enriched slurry (SSP-amended soil slurry; pH of 8.1), micro-dose placement (MDP; drill and place closer to plant root), and full dose placement by broadcasting (FD). In SRD method, seedlings were dipped in three different P concentrations (0, 50, and 100 mg P2O5 kg-1) for varying durations (0, ½, 1, 2, 3, and 4 hours) and then transplanted into pots, along with the MDP and FD treatments, resulting in 15 total treatments with 5 replications. The amount of P adhered to the seedling roots in the SRD treatments was 21 and 90 times lower than that P applied in MDP and FD treatments, respectively. The best performance in biomass production was observed in seedlings dipped in 100 mg P2O5 kg-1 for 2 hours in SRD, (dipping in higher concentrations with longer durations resulting in plant death). Overall, the comparison showed a 52%, 178%, and 293% increase in biomass production compared to the control for FD, MDP, and SRD, respectively. P-use and -recovery efficiency followed the same trend. Further multilocational trials are necessary to assess this method, and it is recommended to apply a reduced amount of P to maintain a balanced of native P in the soil.

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Dipping rice seedlings in P-enriched slurry increases grain yield and shortens days to heading on P-deficient lowlands in the central highlands of Madagascar

Cited by 30 publications

References 35 publications

Sorghum Agronomic Performance and Soil Chemical and Microbiological Properties as Influenced by Burkina Faso Phosphate Rock-Enriched Composts

Sorghum Agronomic Performance and Soil Chemical and Microbiological Properties as Influenced by Burkina Faso Phosphate Rock-Enriched Composts

Amendment with Burkina Faso phosphate rock-enriched composts alters soil chemical properties and microbial structure, and enhances sorghum agronomic performance

A comparative study of Chilli (Capsicum Annuum) on biomass production by phosphorus application through micro-dose placement, broadcast, and optimized seedling Root-dip in P-enriched slurry

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