Scholarlink

Aims <p>Salinity limits crop production in arid and semi-arid regions. This study evaluated organic and mineral soil amendments’ effectiveness in mitigating salinity stress and enhancing quinoa (<i>Chenopodium quinoa Willd</i>. cv. Titicaca) yield, physiology, and stress responses.</p> Methods <p>A controlled pot experiment was conducted under open-field conditions with six treatments: unamended control (C), gypsum (G), spent mushroom compost (SMC), humic acid (HA), SMC + G, and HA + G. Plants were irrigated with saline water at electrical conductivities of 4, 8, and 12 dS.m<sup>−1</sup> to simulate low, moderate, and high salinity levels, respectively. Soil properties and plant yield traits, pigments, osmolytes, oxidative stress markers and antioxidant activity measured.</p> Results <p>The soil amendments decreased electrical conductivity and bulk density while enhancing organic carbon and water storage capacity, with SMC and SMC + G showing the strongest effects. Moderate salinity (8 dS.m<sup>−1</sup>) enhanced biomass and yield, while high salinity (12 dS.m<sup>−1</sup>) reduced photosynthetic pigments and induced oxidative stress, as shown by elevated electrolyte leakage, malondialdehyde, hydrogen peroxide, proline, and soluble carbohydrates. SMC preserved chlorophyll and carotenoids, reduced oxidative damage, and stimulated antioxidant enzymes, particularly ascorbate peroxidase. HA improved pigment stability and water status, while combined treatments (SMC + G, HA + G) provided synergistic protection under high salinity. Gypsum alone had relatively limited benefits. The integration of salt-tolerant crops with soil amendments particularly SMC and SMC + G effectively mitigates salinity-induced stress by improving soil quality, preserving photosynthetic pigments and enhancing antioxidant defences.</p> Conclusions <p>These amendments represent practical and sustainable strategies for rehabilitating saline-sodic soils and supporting quinoa production in marginal environments. Although, long term and field scale researches across different conditions are still needed to evaluate the findings.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Spent mushroom compost and its combination with gypsum as superior soil amendments for quinoa production under saline conditions

  • 期刊论文

  • 发表日期：

    2026年7月1日

查看全文
  • Mania Yousefi,
  • Hossein Shariatmadari,
  • Hamid Reza Eshghizadeh

摘要

Aims

Salinity limits crop production in arid and semi-arid regions. This study evaluated organic and mineral soil amendments’ effectiveness in mitigating salinity stress and enhancing quinoa (Chenopodium quinoa Willd. cv. Titicaca) yield, physiology, and stress responses.

Methods

A controlled pot experiment was conducted under open-field conditions with six treatments: unamended control (C), gypsum (G), spent mushroom compost (SMC), humic acid (HA), SMC + G, and HA + G. Plants were irrigated with saline water at electrical conductivities of 4, 8, and 12 dS.m−1 to simulate low, moderate, and high salinity levels, respectively. Soil properties and plant yield traits, pigments, osmolytes, oxidative stress markers and antioxidant activity measured.

Results

The soil amendments decreased electrical conductivity and bulk density while enhancing organic carbon and water storage capacity, with SMC and SMC + G showing the strongest effects. Moderate salinity (8 dS.m−1) enhanced biomass and yield, while high salinity (12 dS.m−1) reduced photosynthetic pigments and induced oxidative stress, as shown by elevated electrolyte leakage, malondialdehyde, hydrogen peroxide, proline, and soluble carbohydrates. SMC preserved chlorophyll and carotenoids, reduced oxidative damage, and stimulated antioxidant enzymes, particularly ascorbate peroxidase. HA improved pigment stability and water status, while combined treatments (SMC + G, HA + G) provided synergistic protection under high salinity. Gypsum alone had relatively limited benefits. The integration of salt-tolerant crops with soil amendments particularly SMC and SMC + G effectively mitigates salinity-induced stress by improving soil quality, preserving photosynthetic pigments and enhancing antioxidant defences.

Conclusions

These amendments represent practical and sustainable strategies for rehabilitating saline-sodic soils and supporting quinoa production in marginal environments. Although, long term and field scale researches across different conditions are still needed to evaluate the findings.