Biochar as composite of phosphate fertilizer: Characterization and agronomic effectiveness

2020 ◽  
Vol 743 ◽  
pp. 140604 ◽  
Author(s):  
Denison Pogorzelski ◽  
José Ferreira Lustosa Filho ◽  
Patrícia Cardoso Matias ◽  
Wedisson Oliveira Santos ◽  
Leonardus Vergütz ◽  
...  
Keyword(s):  
Phosphate Fertilizer ◽  
Agronomic Effectiveness

scholarly journals Critical Evaluation of the Agronomic Effectiveness of Recovered Phosphate Fertilizer Produced From Incinerated Sewage Sludge Ash

2021 ◽  
Author(s):  
Le FANG ◽  
Qiming Wang ◽  
Jiang-shan Li ◽  
Chi Sun Poon
Keyword(s):  
Sewage Sludge ◽  
Plant Growth ◽  
Critical Evaluation ◽  
Phosphate Fertilizer ◽  
P Availability ◽  
Agronomic Effectiveness ◽  
Sewage Sludge Ash ◽  
P Recovery ◽  
Sludge Ash ◽  
P Fertilizers

Abstract Phosphorus (P) recovery from incinerated sewage sludge ash (ISSA) has been extensively investigated, and various recovered phosphate fertilizers (RPFs) have been produced. In this study, three RPFs (calcium phosphate compounds (CaP), struvite (SP), and P-loaded biochar (BP)) produced from ISSA were characterized and their agronomic effectiveness were verified by pot experiments with the cultivation of choy sum (Brassica campestris L. ssp. Chinensis var. utillis Tsen et Lee) and ryegrass (Lolium perenne L.). The SP has the highest P purity while the BP has the most complex P species. And the plant growth results showed that the RPFs greatly facilitated plant growth and demonstrated superior/comparable effects to those of MP/CoF. In general, choy sum fertilized with SP showed the best effect due to the Mg involved and the high P purity of SP, while ryegrass fertilized with BP performed the best among all of the groups because of the additional nutritional elements and the high P availability of BP. Additionally, the accumulation of heavy metals in the plants under all conditions did not exceed the limits stipulated in the regulations. These results indicate that recovering P from ISSA is an attractive technology to produce P fertilizers, which can alleviate both the scarcity of phosphate resources and the burden of ISSA management.

scholarly journals A Poultry Litter-Derived Organomineral Phosphate Fertilizer Has Higher Agronomic Effectiveness Than Conventional Phosphate Fertilizer Applied to Field-Grown Maize and Soybean

2021 ◽  
Vol 13 (21) ◽  
pp. 11635
Author(s):  
Joaquim José Frazão ◽  
Vinicius de Melo Benites ◽  
Vitor Mateus Pierobon ◽  
João Victor Schiavon Ribeiro ◽  
José Lavres
Keyword(s):  
Crop Yields ◽  
Poultry Litter ◽  
Dry Weight ◽  
Nutrient Content ◽  
Phosphate Fertilizer ◽  
P Uptake ◽  
Agronomic Effectiveness ◽  
Single Superphosphate ◽  
Soil P ◽  
Shoot Dry Weight

Inadequate disposal of poultry litter (PL) may promote eutrophication of water bodies due to its high nutrient content, including phosphorus (P). Thus, recycling P from PL to produce organomineral fertilizer (OMF), reduces the dependence on finite mineral P reserves, and also reduces P losses from soil. In this context, a field experiment was carried out to assess the agronomic effectiveness of a granular PL-derived OMF applied to maize and soybean in a highly weathered tropical soil. OMF was compared to single superphosphate (SSP) at five P rates between 0 and 70 kg ha−1. The shoot dry weight (SDW) and grain yields of soybean and maize were affected by P rates; however, no difference between OMF and SSP was found. A similar trend was observed for soil P and P uptake. The leaf P content and soil pH were not affected by either P sources or P rates. Although there was no difference between OMF and SSP on the crop yields, OMF had the highest relative agronomic effectiveness based on the SDW. These results show that the production of granular OMF from PL is a viable alternative to conventional P fertilizers and reduces the dependence of mineral P reserves.

Phosphorus: Past History and Contributions to the Global Food Supply

2019 ◽  
Vol 103 (1) ◽  
pp. 6-8 ◽  
Author(s):  
Terry Roberts
Keyword(s):  
Food Security ◽  
Food Supply ◽  
Food Production ◽  
Production Systems ◽  
Past History ◽  
Phosphate Fertilizer ◽  
Global Food ◽  
Global Food Supply

Since its early rudimentary forms, phosphate fertilizer has developed in step with our understanding of successful food production systems. Recognized as essential to life, the responsible use P in agriculture remains key to food security.

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