dc.contributor | Universidade Estadual Paulista (Unesp) | |
dc.contributor | Universidade de São Paulo (USP) | |
dc.contributor | Environmental and Soil Sciences | |
dc.date.accessioned | 2018-12-11T16:39:52Z | |
dc.date.available | 2018-12-11T16:39:52Z | |
dc.date.created | 2018-12-11T16:39:52Z | |
dc.date.issued | 2015-10-28 | |
dc.identifier | Communications in Soil Science and Plant Analysis, v. 46, n. 19, p. 2449-2459, 2015. | |
dc.identifier | 1532-2416 | |
dc.identifier | 0010-3624 | |
dc.identifier | http://hdl.handle.net/11449/168125 | |
dc.identifier | 10.1080/00103624.2015.1081926 | |
dc.identifier | 2-s2.0-84946499039 | |
dc.description.abstract | Studies of phosphorus (P) forms in high-weathering soils, after long periods of phosphate fertilizer application associated with organic residues, are important to optimize P fertilization. This study aims to evaluate the effect of filter cake application and other distinct phosphate sources on organic and inorganic P fractions in Red Eutrophic Argisoil cultivated with sugarcane. The experiment was established between 2012 and 2014, in Sao Paulo State, Brazil. The treatments were as follows: control (without P), triple superphosphate, natural phosphate from Araxá, and naturally reactive phosphate Bayóvar on the presence and absence of filter cake at 7.5 t ha−1 (dry mass). The P rate was 90 kg ha−1 of phosphorus pentoxide (P2O5) soluble in citric acid. The experiment was arranged in a randomized block, in a 4 × 2 factorial with three repetitions. After 22 months of treatments, soil samples were collected on sugarcane planting lines and P fractionation was analyzed. The greatest percentage of P is found as nonlabile P fractions, regardless of filter cake application or not. The use of low solubility sources, such as natural phosphate from Araxá, in association with filter cake has promoted greater solubility of P bound to calcium (Ca), which can enhance the crop uses. Filter cake increases most of labile and moderately labile inorganic P forms in the soil (resin; sodium bicarbonate, NaHCO3; and sodium hydroxide, NaOH, 0.1 mol L−1), which characterizes the importance of this source to sugarcane nutrient supply. | |
dc.language | eng | |
dc.relation | Communications in Soil Science and Plant Analysis | |
dc.relation | 0,341 | |
dc.relation | 0,341 | |
dc.rights | Acesso aberto | |
dc.source | Scopus | |
dc.subject | Organic residue | |
dc.subject | phosphorus forms | |
dc.subject | phosphorus sources | |
dc.subject | residual effect | |
dc.title | Phosphorus Fractionation in Soil Cultivated with Sugarcane Fertilized by Filter Cake and Phosphate Sources | |
dc.type | Artículos de revistas | |