Otimização da biomassa de flor-de-seda na produção de rúcula em regiões semiáridas

Jailma Suerda Silva de Lima; Francisco  Bezerra Neto; Iron Dhones de Jesus Silva do Carmo; Jéssica Paloma Pinheiro da Silva; Elizangela Cabral dos Santos; Marianne Costa de Azevedo; Gardênia Silvana de Oliveira Rodrigues; Rebeca Monique Silva Frutuoso

doi:10.1590/1983-21252025v3812604rc

Authors

Jailma Suerda Silva de Lima Department of Agronomic and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0001-7584-592X
Francisco Bezerra Neto Department of Agronomic and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0001-9622-206X
Iron Dhones de Jesus Silva do Carmo Postgraduate Program in Plant Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0003-0962-9342
Jéssica Paloma Pinheiro da Silva Postgraduate Program in Plant Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-5078-3125
Elizangela Cabral dos Santos Department of Agronomic and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-7074-3147
Marianne Costa de Azevedo Postgraduate Program in Plant Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0000-0002-9976-5147
Gardênia Silvana de Oliveira Rodrigues Secretaria de Estado de Educação, Cultura, Esporte e Lazer, Mossoró, RN, Brazil https://orcid.org/0000-0003-0980-5561
Rebeca Monique Silva Frutuoso Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil https://orcid.org/0009-0003-0002-0239

DOI:

https://doi.org/10.1590/1983-21252025v3812604rc

Keywords:

Green manuring. Calotropis procera. Eruca sativa. Monocropping. Agro-economic optimization.

Abstract

Enhancing soil fertility in vegetable cultivation presents challenges, notably using green manure from spontaneous species in the Caatinga biome, such as roostertree (Calotropis procera [Ait.] R. Br.). This study aimed to evaluate and optimize the physical and economic efficiencies of monocropped arugula, as influenced by varying amounts of roostertree biomass. We employed a randomized block design with seven treatments and five replications. Treatments involved different quantities of C. procera biomass (20, 40, 60, 80, and 100 t ha^-1 on a dry basis), along with two additional treatments in each block: a control (no fertilization) and one with mineral fertilization. The "Cultivada" arugula cultivar was fertilized for maximum productive efficiency using 63.31 t ha^-1 of C. procera dry biomass, yielding 8.45 t ha^-1. The highest optimized agroeconomic efficiency, reflecting a net income of BRL 111,007.64 per hectare, was achieved with 59.26 t ha^-1 of C. procera dry biomass. The return rate was BRL 4.65 for every real investment, with a profitability index of 77.38%. Thus, using C. procera biomass as green manure is a viable technology for arugula producers in semi-arid regions.

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Author Biography

Jailma Suerda Silva de Lima, Department of Agronomic and Forestry Sciences, Universidade Federal Rural do Semi-Árido, Mossoró, RN, Brazil

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