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Grass-legume intercropping pasture system improves physiological activity and yield of postcrop soybeans

Pinaffi, Camila Dias ; dos Santos, Carlos Henrique ; Pacheco, Ana Cláudia ; Mônico Moreira, Ana Carolina ; Mignacca, Flávia Alessandra

European journal of agronomy, 2024-08, Vol.158, p.127222, Article 127222 [Periódico revisado por pares]

Elsevier B.V

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  • Título:
    Grass-legume intercropping pasture system improves physiological activity and yield of postcrop soybeans
  • Autor: Pinaffi, Camila Dias ; dos Santos, Carlos Henrique ; Pacheco, Ana Cláudia ; Mônico Moreira, Ana Carolina ; Mignacca, Flávia Alessandra
  • Assuntos: Amino acids ; Biological nitrogen fixation ; Chlorophyll ; Crop-livestock integration ; Urease enzyme ; Ureides
  • É parte de: European journal of agronomy, 2024-08, Vol.158, p.127222, Article 127222
  • Descrição: Crop-livestock integration with nitrogen (N) fertilizer application result in increases in crop yield and soil conservation. The objective of this work was to evaluate plant physiology and grain yield of soybean crops grown in rotation with pasture systems with grass-legume intercrops or mineral N fertilizer application. The experiment was conducted in a Typic Hapludox (Latossolo Vermelho-Amarelo distrofico argiluvico), evaluating two consecutive soybean crop seasons grown in rotation with the following pasture systems: Mombaça grass (Panicum maximum cv. Mombaça) with application of N; Mombaça grass without application of N; Mombaça grass intercropped with the legume pigeonpea (Cajanus cajan); and Mombaça grass intercropped with the legume java (Macrotyloma axillare cv. Java). Trifoliate leaves were collected from soybean plants at vegetative (V5) and reproductive (R3) stages for physiological analyses, and soybean yield was evaluated at the end of each production cycle. Grass-legume intercropping pasture system, mainly the legume Java, and the system that received N fertilization improved in the soybean physiological response with increase of chlorophyll, amino acid contents, protein contents, total N and urease enzyme activity. The soybean crops were benefited by the preceding pasture systems with grass-legume intercrops, without affecting the biological N fixation. The N fertilizer application to the pasture affected the N biological fixation in soybean plants, with a decrease in formation of ureides in the plant nodules. [Display omitted] •Soybean crops were benefited by the pasture systems with grass-legume intercrops.•Soil C and N increased with grass-legume intercrops system and N fertilizer.•The application of N fertilizer to the pasture affected the BNF in soybean plants.•Grass-legume intercropping pasture improved in the soybean physiological response.•Intense water deficits induce accumulation of TFA and ureides in soybean leaves.
  • Editor: Elsevier B.V
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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