Improving soil organic nitrogen and sulfur pools by cover cropping and crop fertilization in soybean-based cropping systems
- Crespo, Cecilia
- Wyngaard, Nicolás
- Sainz Rozas, Hernan Rene
- Barbagelata, Pedro Aníbal
- Barraco, Mirian Raquel
- Gudelj, Vicente
- Barbieri, Pablo Andres
DOIAbstract
Nitrogen (N) and sulfur (S) define crops productivity, and are currently deficient in most agricultural soils. In agricultural systems, management practices can affect N and S organic pools (Norg and Sorg, respectively). The objective of our study was to assess how intensification practices [use of grasses as cover crops (CC) and/or fertilization] affect Norg and Sorg, anaerobic N (Nan), and carbon (C)/N and C/S ratios as compared with soybean [Glycine max (L.) Merr.] monoculture, in soils under no tillage, with contrasting edaphoclimatic conditions. The experiment was carried out in four long term experiments (> 10 yr), where four treatments were evaluated: control (soybean monoculture (Sb)), soybean monoculture fertilized with phosphorus ...
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