Precrops and N-fertilizer impacts on soybean performance in tropical regions of Brazil

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dc.creatorAnderson Hideo Yokoyama
dc.creatorClaudemir Zucareli
dc.creatorAntonio Eduardo Coelho
dc.creatorMarco Antonio Nogueira
dc.creatorJulio Cezar Franchini
dc.creatorHenrique Debiasi
dc.creatorAlvadi Antonio Balbinot
dc.date2022
dc.date.accessioned2026-07-07T03:52:35Z
dc.descriptionPrecrops have different growth patterns, nitrogen (N) requirements, and production of residues varying in amounts and quality that may affect the N-clycling and the soybean (Glycine max L. Merrill) cropped in succession. This study aimed to evaluate the effect of precrops and N fertilization on soybean performance. An experiment was conducted in Londrina, Paraná State, Brazil, with six precrops treatments: fallow, ruzigrass (Urochloa ruziziensis), showy rattlebox (Crotalaria spectabilis), corn (Zea mays) without or with 80 kg ha−1 of N at topdressing as urea, and wheat (Triticum aestivum). Subplots consisted of two levels of N fertilization at soybean sowing: 0 and 30 kg ha−1 of N as ammonium nitrate at sowing. Urochloa ruziziensis as precrops increased the soybean yield (5,171 kg ha-1) when compared with corn (4,346 kg ha-1) and fallow (4,467 kg ha-1). In 2016/17, N fertilization of soybean with 30 kg ha−1 of N at sowing, although increasing the initial plant growth (745 kg ha-1 with vs. 662 kg ha-1 without), impairs nodulation (100 mg pl-1 with vs. 130 g pl-1 without) and does not increase grain yield. Oil and protein concentrations in soybean grains are not influenced by precrops and N fertilization at sowing. We found that the use Urochloa ruziziensis as cover crop in soybean precrops is a good recommendation option in tropical regions of Brazil, because increasing the yield of soybean grown in succession. N fertilization at in soybean sowing it should not be recommended even in the presence of a large amount of straw.
dc.formatapplication/pdf
dc.identifier1679-9275
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303071489032
dc.identifierhttps://www.redalyc.org/journal/3030/303071489032/
dc.identifierhttps://www.redalyc.org/journal/3030/303071489032/html/
dc.identifierhttps://www.redalyc.org/journal/3030/303071489032/303071489032.epub
dc.identifierhttps://www.redalyc.org/journal/3030/303071489032/movil
dc.identifier10.4025/actasciagron.v44i1.54650
dc.identifier.urihttp://hdl.handle.net/123456789/445737
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3030
dc.rightsActa Scientiarum. Agronomy
dc.sourceActa Scientiarum. Agronomy (Brasil) Vol.44
dc.subjectAgrociencias
dc.titlePrecrops and N-fertilizer impacts on soybean performance in tropical regions of Brazil
dc.typeartículo científico

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Acta Scientiarum. Agronomy - Universidade Estadual de Maringá