Lime and phosphogypsum application management: changes in soil acidity, sulfur availability and crop yield

Besen, Marcos Renan; Ribeiro, Ricardo Henrique; Neto, Michel Esper; Minato, Evandro Antonio; Coneglian, Carolina Fedrigo; Kachinski, Wagner Deckij; Tormena, Cássio Antônio; Inoue, Tadeu Takeyoshi; Batista, Marcelo Augusto

doi:10.36783/18069657rbcs20200135

Cited by 4 publications

(2 citation statements)

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“…The accumulation of

{SO}_{4}^{2 -}

–S from AG initially occurs in the first soil layer (Souza et al, 2012), but it can become evenly distributed throughout the soil profile to a depth of 0.60 m (Soratto & Crusciol, 2008). An increase in the

{SO}_{4}^{2 -}

–S level from gypsum application has been the main chemical factor related to increases in yield of crops such as wheat and maize (Besen et al, 2021; Vicensi et al, 2020).…”

Section: Resultsmentioning

confidence: 99%

“…In order to minimize the limiting factors in these soils, agricultural gypsum (AG) has been used as a soil conditioner, as it rapidly increases concentrations of calcium and sulphate in the soil subsurface and to alleviate toxic levels of Al 3+ (Vicensi et al, 2020), but it cannot decrease the soil acidity (Borgmann et al, 2021). Agricultural gypsum improves the root system (Araújo et al, 2016(Araújo et al, , 2017Pavan et al, 1984) without the need to interrupt the continuous no-tillage system for annual grain crops production (Besen et al, 2021;Nora & Amado, 2013) and, for perennial crops such as coffee (Pavan et al, 1984). Agricultural gypsum (CaSO 4 .2H 2 O) is a by-product of the phosphoric acid industry, which is used in the manufacture of triple superphosphate, monoammonium phosphate and diammonium phosphate (Bossolani et al, 2020;Tayibi et al, 2009;van Raij, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Residual effects of agricultural gypsum on soil chemical and microbiological characteristics

Luiz

Zanão

Ribeiro

et al. 2022

Soil Use and Management

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Agricultural gypsum can improve the chemical quality of low fertility soil, providing calcium and sulphur. In this study, we evaluated the effects of agricultural gypsum application at five dosage rates (0, 3, 6, 9 and 12 Mg ha−1) on the chemical and microbial soil characteristics of an acid oxisol (0–0.1 m and 0.1–0.2 m layers) and the impact on wheat grain yield. Increasing agricultural gypsum dosage rates increased Ca, S as well as the Ca/Mg ratio and microbial biomass of carbon in the 0–01 m soil layer. In the 0.1–0.2 m soil layer, agricultural gypsum affected organic C (Corg), Ca and the Ca/Mg ratio. The microbial biomass of carbon had positive correlations with most chemical and microbial variables. In the 0–0.1 m soil, the microbial biomass of C and N had negative relationships with arylsulphatase and β‐glucosidase, respectively. At 0.1–0.2 m depth, arylsulphatase activity correlated negatively with Corg and positively with Al. Agricultural gypsum soil amendments increased the microbial biomass of carbon, especially at the highest application rate (12 Mg ha−1). The highest biochemical index activity was found in the 3 Mg ha−1 (0–0.1 m) and 9 Mg ha−1 (0.1–0.2 m) treatments. At 70 months after application, we found that maximum wheat grain yield was rendered by an agricultural gypsum application rate close to 3 Mg ha−1.

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“…The accumulation of

{SO}_{4}^{2 -}

{SO}_{4}^{2 -}

–S level from gypsum application has been the main chemical factor related to increases in yield of crops such as wheat and maize (Besen et al, 2021; Vicensi et al, 2020).…”

Section: Resultsmentioning

confidence: 99%