Biological N Fixation and N Transfer in an Intercropping System between Legumes and Organic Cherry Tomatoes in Succession to Green Corn

Autor: Gabriela Cristina Salgado, Edmilson Jose Ambrosano, Fabrício Rossi, Ivani Pozar Otsuk, Gláucia Maria Bovi Ambrosano, Cesar Augusto Santana, Takashi Muraoka, Paulo Cesar Ocheuze Trivelin
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Agriculture, Vol 11, Iss 8, p 690 (2021)
Druh dokumentu: article
ISSN: 2077-0472
DOI: 10.3390/agriculture11080690
Popis: The aim of this study was to investigate the transfer of N from different legumes to cherry tomatoes in the intercropping system under residual straw of the previous green corn crop using the 15N natural abundance method. We also investigated the temporal variation in nitrogen transfer to a cherry tomato, the biological nitrogen fixation (BNF) of legumes, and the N concentration of green corn cultivated in the intercrop succession. The experimental design was a complete randomized block with eight treatments and five replications, described as follows: two controls consisting of a monocrop of cherry tomato with or without residual straw, cherry tomato and jack bean, sun hemp, dwarf velvet bean, mung bean, and white lupine or cowpea bean in intercropping system. The BNF was responsible for more than half of the N accumulated in the legumes. The N of legumes was transferred to cherry tomato in similar quantities, and the leaves and fruits of cherry tomato received more N transfer than shoots. It was shown that N transfer increases with the growth/development of cherry tomatoes. The intercropping system with legumes did not affect the 15N natural abundance of leaves and the aboveground biomass of green corn cultivated in succession.
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