Effects of Silicon Alone and Combined with Organic Matter and Trichoderma harzianum on Sorghum Yield, Ions Accumulation and Soil Properties under Saline Irrigation

José Orlando Nunes da Silva (), Luiz Guilherme Medeiros Pessoa (), Emanuelle Maria da Silva, Leonardo Raimundo da Silva, Maria Betânia Galvão dos Santos Freire, Eduardo Soares de Souza, Sérgio Luiz Ferreira-Silva, José Geraldo Eugênio de França, Thieres George Freire da Silva and Eurico Lustosa do Nascimento Alencar
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José Orlando Nunes da Silva: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Luiz Guilherme Medeiros Pessoa: 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
Leonardo Raimundo da Silva: Academic Unit of Serra Talhada, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Maria Betânia Galvão dos Santos Freire: Graduate Program in Soil Science, Federal Rural University of Pernambuco, Recife 52171-900, PE, Brazil
Eduardo Soares de Souza: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Sérgio Luiz Ferreira-Silva: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
José Geraldo Eugênio de França: Graduate Program in Crop Production, Federal Rural University of Pernambuco, Serra Talhada 56909-535, PE, Brazil
Thieres George Freire da Silva: 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

Agriculture, 2023, vol. 13, issue 11, 1-23

Abstract: The action of silicon as a salt stress mitigator has been investigated in isolation, and its combined efficacy with other salt stress mitigators needs to be addressed. This work verified whether silicon, in combination with organic matter and Trichoderma harzianum , enhances the production of forage sorghum under saline irrigation and its effects on soil properties. The field experiment was conducted in Parnamirim (PE), a semiarid region of Brazil. Forage sorghum ( Sorghum sudanense (Piper) Stapf) was irrigated with saline water (3.12 dS m −1 ) and subjected to the application of non-silicon, silicon alone, and silicon combined with Trichoderma and organic matter over three consecutive cuts (every three months after germination). Silicon applied in combination significantly increased the content of nutrient ions K + , P, Ca 2+ , and Mg 2+ in sorghum leaves, stems, and panicles and increased P content in the soil by 170, 288, and 92% for the first, second, and third cuts, respectively. When silicon was applied in combination, sorghum’s dry and fresh matter (total yield for the three cuts) increased to 62.53 and 182.43 t ha −1 , respectively. In summary, applying silicon (Si) combined with Trichoderma and organic matter promotes higher nutrient ion contents in soil and sorghum plants and a higher forage sorghum yield.

Keywords: biosaline agriculture; salt stress attenuators; salt tolerance; sorghum yield (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: 2023
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