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

Gabriela Cristina Salgado, Edmilson Jose Ambrosano, Fabrício Rossi, Ivani Pozar Otsuk, Gláucia Maria Bovi Ambrosano, Cesar Augusto Santana, Takashi Muraoka and Paulo Cesar Ocheuze Trivelin
Additional contact information
Gabriela Cristina Salgado: Nuclear Energy Center (CENA), University of São Paulo (USP), Piracicaba 13416000, Brazil
Edmilson Jose Ambrosano: Southcentral Regional Center, São Paulo Agribusiness Technology Agency (APTA), Piracicaba 13416000, Brazil
Fabrício Rossi: Biosystems Engineering Department, Faculty of Animal Science and Food Engineering (FZEA), University of São Paulo (USP), Pirassununga 13635900, Brazil
Ivani Pozar Otsuk: Southcentral Regional Center, São Paulo Agribusiness Technology Agency (APTA), Piracicaba 13416000, Brazil
Gláucia Maria Bovi Ambrosano: Department of Social Dentistry, Biostatistics, Piracicaba Dentistry College, University of Campinas, Piracicaba 13416000, Brazil
Cesar Augusto Santana: Crop Science Department, Luiz de Queiroz College of Agriculture (ESALQ), University of São Paulo (USP), Piracicaba 13416000, Brazil
Takashi Muraoka: Nuclear Energy Center (CENA), University of São Paulo (USP), Piracicaba 13416000, Brazil
Paulo Cesar Ocheuze Trivelin: Nuclear Energy Center (CENA), University of São Paulo (USP), Piracicaba 13416000, Brazil

Agriculture, 2021, vol. 11, issue 8, 1-15

Abstract: 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 15 N 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 15 N natural abundance of leaves and the aboveground biomass of green corn cultivated in succession.

Keywords: green manure; 15 N natural abundance; N concentration (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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