Silicon Combined with Trichoderma harzianum and Organic Matter as an Environmental Friendly Strategy for Mitigating Salt Stress in Quinoa ( Chenopodium quinoa Willd.)

Edson Moreira de Abrantes, Luiz Guilherme Medeiros Pessoa (), Luiz Filipe dos Santos Silva, Emanuelle Maria da Silva, José Orlando Nunes da Silva, Maria Betânia Galvão dos Santos Freire, Alexandre Campelo de Oliveira and Eurico Lustosa do Nascimento Alencar
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Edson Moreira de Abrantes: Irrigated Agriculture Station of Parnamirim, Federal Rural University of Pernambuco, Parnamirim 56163-000, PE, Brazil
Luiz Guilherme Medeiros Pessoa: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Luiz Filipe dos Santos Silva: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Emanuelle Maria da Silva: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
José Orlando Nunes da Silva: Graduate Program in Soil Science, Federal Rural University of Pernambuco, Recife 52171-900, PE, Brazil
Maria Betânia Galvão dos Santos Freire: Graduate Program in Soil Science, Federal Rural University of Pernambuco, Recife 52171-900, PE, Brazil
Alexandre Campelo de Oliveira: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Eurico Lustosa do Nascimento Alencar: Irrigated Agriculture Station of Parnamirim, Federal Rural University of Pernambuco, Parnamirim 56163-000, PE, Brazil

Sustainability, 2024, vol. 16, issue 7, 1-16

Abstract: Silicon is known to be an effective salt stress attenuator for crops, and evaluating its application effectiveness in combination with other salt stress attenuators is essential for crops and soils. This work aimed to assess whether applying organic matter (OM) and Trichoderma (T) potentiates silicon (Si) in mitigating soil salinization and promoting quinoa growth under salt stress. Quinoa plants were grown in pots under saline irrigation (3.12 dS m −1 ) and subjected to the following treatments: quinoa only; quinoa + Si; quinoa + Si + OM; quinoa + Si + T; and quinoa + Si + OM + T, at two levels of soil moisture—30 and 80% of the available water content (AWC). Sixty days after transplanting, soil and quinoa plants were collected from the pots. At 80% AWC, Si + OM and Si + OM + T promoted the highest fresh mass for quinoa—301.54 and 247.26 g, respectively. Si + OM + T significantly mitigated saline parameters (EC = 9.82 dS m −1 ; ESP = 32.27%). Si combined with OM and T was the most effective way to attenuate salt stress in quinoa and soil salinization and promote a more sustainable way to manage saline irrigation in semiarid regions.

Keywords: sustainable agriculture; saline irrigation; salt stress (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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