Long-term crop diversity improves soil chemical attributes, nutrient cycling and soybean yield Andressa Selestina Dalla Côrt, Leandro Pereira Pacheco, Bruno Moço Tessarolli, Eder Rodrigues Batista, Isabô Melina Pascoalotto, João William Bossolani, Evelyn Custódio Gonçalves, Kamila Silva de Macedo, Thaís Rodrigues Magalhães Guedes, Vinícius Hipólito Lopes de Resende, Fabiano André Petter, Edicarlos Damacena de Souza, Jayme Ferrari Neto, João Paulo Gonsiorkiewicz Rigon, Carlos Alexandre Costa Crusciol Nutrient Cycling in Agroecosystems, 2026 Cover crops have the potential to reduce agricultural inputs, but the long-term impacts of cover crops on soil chemical properties and nutrient cycling in tropical systems are not fully understood. This study evaluated the impact of different cover crop systems under long-term no-tillage on shoot dry mass (SDM) production, nutrient cycling, soil chemical properties, and soybean yield in succession in the Cerrado region of Mato Grosso State, Brazil. The treatments consisted of different second crops after soybean cultivation: MC (soybean monocropped), fallow; CS1, Crotalaria spectabilis ; CS2, Pennisetum glaucum ; CS3, Urochloa ruziziensis ; CS4, Cajanus cajan ; and MIX, C. spectabilis + P. glaucum + U. ruziziensis + C. cajan . SDM was evaluated at 0, 90, 105, 120, 150, 180, and 210 days after chemical desiccation of the cover crop using herbicides in the crop years from 2014/15 to 2020/21. Soil chemical properties were evaluated after the 2019/20 soybean harvest. MIX increased SDM by approximately 22% compared with CS2 and CS3 and 60% compared with MC. In years 6 and 7, soybean yields were significantly higher in MIX, CS3, and CS4 than in MC, increasing by approximately 840 kg ha −1 . MIX resulted in the greatest long-term improvements in soil cation exchange capacity, pH, nutrient release and concentration, organic matter, and soybean yield. Even when grown individually, U. ruziziensis , C. cajan , and C. spectabilis also had positive effects on these parameters. Thus, crop successions with cover crops promote improvements in soil fertility and are a sustainable long-term strategy to enhance soybean productivity in the Brazilian Cerrado.
Oxidation dynamics and leaching behavior of elemental sulfur fertilizers in tropical soils with contrasting textures Murilo de Campos, Isabô Melina Pascoaloto, João William Bossolani, Luiz Gustavo Moretti, Bruno Moço Tessarolli, et al. Soil Science Society of America Journal, 2026 Abstract Sulfate in soil is readily leached in humid tropical environments and sandy soils with low organic matter content. Elemental sulfur (ES), an alternative source of sulfur (S), requires microbial oxidation to sulfate (S‐SO 4 2− ) to become available to plants. Due to its low solubility, ES oxidizes slowly, enabling a gradual S release. Two experiments evaluated the S oxidation dynamics in tropical soils using ES‐based fertilizers. Five fertilizers were tested: ammonium sulfate (AS), UREA‐ES14 (micronized elemental sulfur urea‐based fertilizer 14) (micronized, 14.3% S), UREA‐ES75 (micronized elemental sulfur urea‐based fertilizer 75)‐granulated (75% S), UREA‐ES75‐ground (75% S), and elemental sulfur pastille (ES pastille, 90% S), along with a control. The first assessed S oxidation rates over 180 days of incubation (13 samplings); the second analyzed S‐SO 4 2− distribution in soil after simulated rainfall using polyvinyl chloride columns. In Experiment I, oxidation rates ranged from 22% to 32% for UREA‐ES14, UREA‐ES75‐granulated, and UREA‐ES75‐ground. The ES pastille showed the lowest oxidation rate, ranging from 3% to 9%. In Experiment II, ES‐based fertilizers retained higher S‐SO 4 2− concentration in the upper soil layers, indicating lower leaching than AS. After simulated rainfall of 110 mm, 50%–55% of S‐SO 4 2− from AS remained in the layer 0.00–0.05 m, compared to 58%–83% for ES‐based fertilizers. The results suggest that the rate of ES oxidation is positively influenced by longer incubation periods and offers residual soil effects. However, the oxidation rate to S‐SO 4 2− is limited and concentrated in soil surface layers, affecting long‐term bioavailability to plants. ES‐based fertilizers exhibited lower leaching potential, supporting ES uses as a slow release of S in tropical soils.
Long-term crop diversity improves soil chemical attributes, nutrient cycling and soybean yield ASD Côrt, LP Pacheco, BM Tessarolli, ER Batista, IM Pascoalotto, ... Nutrient Cycling in Agroecosystems 132 (3), 34 , 2026 2026
Oxidation dynamics and leaching behavior of elemental sulfur fertilizers in tropical soils with contrasting textures M de Campos, IM Pascoaloto, JW Bossolani, LG Moretti, BM Tessarolli, ... Soil Science Society of America Journal 90 (1), e70198 , 2026 2026
Cover crop diversity improves the biochemical, physical and microbiological attributes of soil under long-term no-tillage AS Dalla Côrt, LP Pacheco, BM Tessarolli, ÉR Batista, TRM Guedes, ... Applied Soil Ecology 215, 106494 , 2025 2025 Citations: 2
Sustained inoculation is key to maximizing biological nitrogen fixation in fertile soils corrected with lime and phosphogypsum. JW BOSSOLANI, CAC CRUSCIOL, M FONSECA, LG MORETTI, ... 2025
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Cover crop diversity improves the biochemical, physical and microbiological attributes of soil under long-term no-tillage AS Dalla Côrt, LP Pacheco, BM Tessarolli, ÉR Batista, TRM Guedes, ... Applied Soil Ecology 215, 106494 , 2025 2025 Citations: 2
Long-term crop diversity improves soil chemical attributes, nutrient cycling and soybean yield ASD Côrt, LP Pacheco, BM Tessarolli, ER Batista, IM Pascoalotto, ... Nutrient Cycling in Agroecosystems 132 (3), 34 , 2026 2026
Oxidation dynamics and leaching behavior of elemental sulfur fertilizers in tropical soils with contrasting textures M de Campos, IM Pascoaloto, JW Bossolani, LG Moretti, BM Tessarolli, ... Soil Science Society of America Journal 90 (1), e70198 , 2026 2026
Sustained inoculation is key to maximizing biological nitrogen fixation in fertile soils corrected with lime and phosphogypsum. JW BOSSOLANI, CAC CRUSCIOL, M FONSECA, LG MORETTI, ... 2025