Agronomic performance of common bean in straw mulch systems and topdressing nitrogen rates in no-tillage

Revista Ceres

Tatiana Pagan Loeiro Da Cunha¹  Fábio Luiz Checchio Mingotte¹  Antonio Carlos De Almeida Carmeis Carmeis Filho¹  Fernando Marcelo Chiamolera¹  Leandro Borges Lemos¹  Domingos Fornasieri Filho¹ 

关键词: Phaseolus vulgaris;    Zea mays;    Urochloa ruziziensis;    crop rotation;    nitrogen fertilization;    Phaseolus vulgaris;    Zea mays;    Urochloa ruziziensis;    sucessão de culturas;    adubação nitrogenada;   

DOI  :  10.1590/0034-737X201562050010

来源: SciELO

【 摘 要 】

ABSTRACTIn no-tillage systems, straw coverage on soil surface is the key to success, and the choice of crops for rotation is crucial to achieve the sustainability and quality that conservation agriculture requires. The objective of this study was to evaluate the agronomic performance of the common bean cultivar IAC Formoso sown in succession to three straw mulch systems (corn alone, corn/Urochloa ruziziensisintercrop and U. ruziziensisalone) and topdress nitrogen rates (0; 40; 80; 120 and 160 kg ha-1N), at the four-leaf stage, three years after the implementation of no-tillage. The experiment was arranged in a randomized block split plot design, with three replications. Common bean highest yields were achieved in succession to U. ruziziensisalone and intercropped with corn. The corn/U. ruziziensisintercrop provided both straw and seed production, allowing for quality no-tillage. Topdressed nitrogen influenced the common bean yield when in succession to corn alone, U. ruziziensisalone and corn/U. ruziziensisintercrop in no-tillage.

【 授权许可】

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