Ecophysiology of Soursop Seedlings Irrigated with Fish Farming Effluent under NPK Doses

Francisco Vanies da Silva Sá (), Salvador Barros Torres, Francisca das Chagas de Oliveira, Antônio Sávio dos Santos, Antônia Adailha Torres Souza, Kleane Targino Oliveira Pereira, Tayd Dayvison Custódio Peixoto, Luderlândio de Andrade Silva, Rômulo Carantino Lucena Moreira, Emanoela Pereira de Paiva, Hermes Alves de Almeida, Alberto Soares de Melo, Miguel Ferreira Neto, Pedro Dantas Fernandes and Nildo da Silva Dias
Additional contact information
Francisco Vanies da Silva Sá: Department of Agrarian and Exact, Universidade Estadual da Paraíba, Catolé do Rocha 58884-000, PB, Brazil
Salvador Barros Torres: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Francisca das Chagas de Oliveira: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Antônio Sávio dos Santos: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Antônia Adailha Torres Souza: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Kleane Targino Oliveira Pereira: Plant Biochemistry and Physiology Laboratory, Universidade do Estado do Rio Grande do Norte, Mossoró 59610-210, RN, Brazil
Tayd Dayvison Custódio Peixoto: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Luderlândio de Andrade Silva: Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande 58429-900, PB, Brazil
Rômulo Carantino Lucena Moreira: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Emanoela Pereira de Paiva: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Hermes Alves de Almeida: Department of Agricultural and Environmental Sciences, Universidade Estadual da Paraíba, Lagoa Seca 58117-000, PB, Brazil
Alberto Soares de Melo: Department of Biology, Universidade Estadual da Paraíba, Campina Grande 58429-500, PB, Brazil
Miguel Ferreira Neto: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil
Pedro Dantas Fernandes: Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande 58429-900, PB, Brazil
Nildo da Silva Dias: Department of Agronomic and Forest Sciences, Universidade Federal Rural do Semi-Árido, Mossoró 59625-900, RN, Brazil

Sustainability, 2024, vol. 16, issue 11, 1-19

Abstract: Soursop ( Annona muricata L.) is a tropical fruit grown in the semi-arid region of Brazil, where problems of quantitative and qualitative scarcity of water for irrigation are frequent. Using alternative water sources, such as fish farming effluents, can increase water availability; however, it presents risks due to its high salinity levels. We aimed to evaluate the effect of irrigation with saline fish farming effluent and NPK doses on soursop seedlings’ ecophysiology. We conducted a greenhouse experiment using a randomized complete block design with a 2 × 5 factorial scheme. The factors consisted of two irrigation water sources (local supply water with 0.5 dS m −1 and fish farming effluent with 3.5 dS m −1 ) and five doses of NPK (25%, 50%, 75%, 100%, and 125% of the fertilizer recommendation of 100:300:150 mg dm −3 of N:P 2 O 5 :K 2 O for soil). The soursop seedlings showed the best growth results for plant height, stem diameter, and shoot dry mass when irrigated with low-salinity water at 95% of the recommended NPK dose. However, under saline stress, the soursop seedlings showed optimal growth when fertilized with 69% of NPK dose. We recommend the following NPK fertilization for soursop seedlings: 95:285:143 mg dm −3 of N:P 2 O 5 :K 2 O for those irrigated with low-salinity water and 69:207:104 mg dm −3 for those irrigated with fish farm effluent. Irrigating with fish farm effluent can be a practical option for soursop seedlings as it can help save fertilizers and promote environmental sustainability.

Keywords: Annona muricata L.; effluent; plant nutrition; salinity; seed and seedling technology (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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