| Full text | |
| Author(s): |
Braos, Lucas Boscov
[1]
;
Bettiol, Aline Carla Trombeta
[1]
;
Di Santo, Ludmilla Geraldo
[2]
;
Ferreira, Manoel Evaristo
[1]
;
da Cruz, Mara Cristina Pessoa
[1]
Total Authors: 5
|
| Affiliation: | [1] UNESP Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Solos & Adubos, Via Acesso Prof Paulo Donato Castellane S-N, BR-14884900 Jaboticabal - Brazil
[2] UNESP Univ Estadual Paulista, Fac Ciencias Agr & Vet, Dept Clin & Cirurgia Vet, Jaboticabal - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | SOIL USE AND MANAGEMENT; v. 37, n. 3, p. 449-459, JUL 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Studies of phosphorus (P) behaviour in soils receiving sugar cane filter cake are important for determining doses, its contribution to P nutrition and maximizing fertilizer efficiency, especially in soils with low P availability. This study aimed to assess organic and inorganic forms of P in soils treated with sugar cane filter cake, and the relationship between these and plant available P. Soil inorganic (P-i) and organic (P-o) phosphorus forms, organic carbon, pH and resin P were measured in two soils; a Typic Hapludox with clay texture and an Arenic Hapludult with loamy sand texture, subject to three fertilizer treatments (nil P control and 100 mg P dm(-3)as filter cake and triple superphosphate). Inorganic P was fractionated to soluble/loosely bound, Al-bound, Fe-bound, occluded and Ca-bound P forms. Organic P was fractionated into labile, fulvic, humic and residual P(o)forms. Plant dry matter yield and P uptake were also determined. Both fertilizers increased the Al- and Fe-bound P fractions, with the increases caused by triple superphosphate 14.7 and 7.2 mg kg(-1)higher than filter cake, respectively. Filter cake increased the fulvic P(o)by 40.9 mg kg(-1), while triple superphosphate increased it by 28.5 mg kg(-1), in the fine-textured soil. Al-, Fe-bound and labile P(o)fractions in both soils had significant correlations (p <. 01) with plant absorbed P (r = .75, .84 and .54, respectively). Filter cake resulted in lower P(i)fractions and availability, and it has potential to partially replace mineral P fertilizer in fine-textured soils and, entirely, in coarse-textured soils. (AU) | |
| FAPESP's process: | 14/11466-3 - Organics and inorganics phosphorus forms in soils treated with organic wastes and its relations with availability |
| Grantee: | Lucas Boscov Braos |
| Support Opportunities: | Scholarships in Brazil - Doctorate |