2019
DOI: 10.1590/18069657rbcs20180078
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Crop Yield Responses to Sulfur Fertilization in Brazilian No-Till Soils: a Systematic Review

Abstract: Sulfur (S) fertilization recommendations for grain crops in Brazil were formerly established from studies on crops with a low yield potential grown on soils under conventional tillage (CT). However, the subsequent adoption of no-tillage (NT) altered S dynamics in the soil, making it necessary to carefully evaluate the applicability of these S fertilizer recommendations. In addition, the emergence of modern high-yield-potential genotypes, the successive application of concentrated low-sulfur fertilizers, and re… Show more

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Cited by 35 publications
(29 citation statements)
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References 53 publications
(101 reference statements)
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“…SO 4 2− is supplied by the gypsum but is weakly retained in the soil and tends to mobilize deeper into the soil profile, through the action of water and gravity, especially in NT, due to the accumulation of organic matter (OM) in the soil surface layers. Increase in OM results in a greater number of negative charges in the soil, which ends up repelling SO 4 2− , which is the main form of S available in the soil (Pias et al 2019). Up to the 0.6-m depth, a higher SO 4 2− level was observed for 3S splitting than for 1S and 2S levels, showing that the lesser the time lapse after gypsum application, the higher the level of S in the soil.…”
Section: Soil Chemical Attributesmentioning
confidence: 94%
“…SO 4 2− is supplied by the gypsum but is weakly retained in the soil and tends to mobilize deeper into the soil profile, through the action of water and gravity, especially in NT, due to the accumulation of organic matter (OM) in the soil surface layers. Increase in OM results in a greater number of negative charges in the soil, which ends up repelling SO 4 2− , which is the main form of S available in the soil (Pias et al 2019). Up to the 0.6-m depth, a higher SO 4 2− level was observed for 3S splitting than for 1S and 2S levels, showing that the lesser the time lapse after gypsum application, the higher the level of S in the soil.…”
Section: Soil Chemical Attributesmentioning
confidence: 94%
“…This negative effect may increase with the decrease of CEC of the soil. Cereal grain yield increased by 2.4% on average even in soils with Al saturation <5%, possibly because gypsum is a source of SO 4 2− -S for crops and because sulfur is a macronutrient that increases the probability of a positive crop response in tropical and subtropical soils (Kihara et al, 2017;Pias, Tiecher, Cherubin, Mazurana, & Bayer, 2019).…”
Section: (D)mentioning
confidence: 99%
“…However, the declining levels of S are indicative of the negative impacts of continuous cropping which were not mitigated by organic amendments. Binding sites on soil colloids are preferentially bound by P as opposed to S (Pias et al 2019). A plausible explanation for the observed temporal reduction in S could be due to a lopsided competition between these elements and subsequent leaching of unbound S beyond the sampling zone considering that P was several folds higher than S in the soil.…”
Section: Soil Fertilitymentioning
confidence: 97%