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<p>Inland saline shrimp ponds face significant challenges, particularly high seepage problems and potassium nutrient deficiencies, due to the poor soil texture. This leads to the requirement of frequently adding potassium-enriched water to culture ponds. Frequent supplementation of potassium-rich water is often necessary in culture ponds. To investigate a sustainable alternative, a 75-day experiment was conducted to assess the effects of paddy straw biochar (PSB) on both water and sediment quality, as well as the growth performance of <i>Litopenaeus vannamei</i>, with a particular focus on sediment seepage and potassium enrichment. PSB was applied to nursery ponds at two rates: 20&#xa0;kg per 200 m<sup>2</sup> (equivalent to 1 ton/ha) for treatment T<sub>1</sub> and 40&#xa0;kg per 200 m<sup>2</sup> (2 tons/ha) for treatment T<sub>2</sub>. The results indicated a statistically significant (<i>p</i> &lt; 0.05) improvement in key water quality parameters and sediment properties. The overall enhancement in these parameters followed the order: T<sub>2</sub> &gt; T<sub>1</sub> &gt; Control (C). Similarly, the treatment ponds T<sub>1</sub> and T<sub>2</sub>, amended with paddy straw biochar, showed a significant reduction in seepage rates, 2.81% and 6.79%, respectively, compared to the control ponds without biochar. This resulted in water savings of 18,310&#xa0;L and 44,220 L, respectively, for a 200 m<sup>2</sup> pond during the 75-day culture period. Furthermore, using PSB reduced the amount of K (potassium) required for the T<sub>1</sub> and T<sub>2</sub> treatment ponds by 11.58% and 18.47%, respectively, each with an area of 200 m<sup>2</sup>. Our results indicate that paddy straw biochar provides a cost-effective and sustainable approach to enhancing seepage reduction and productivity in inland saline shrimp ponds.</p> Graphical Abstract <p></p>

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Innovative Solutions for Inland Saline Shrimp Pond Management: Paddy Straw Biochar’s Dual Role in Seepage Reduction and Potassium Amendment

  • 期刊论文

  • 发表日期：

    2026年3月9日

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  • Arun Konduri,
  • Vidya Shree Bharti,
  • Sreedharan Krishnan,
  • Saurav Kumar,
  • Ajit Kumar Verma,
  • Ajay Kumar Bhardwaj,
  • Satya Prakash Shukla,
  • Tao Kara,
  • Nisha Chuphal

摘要

Inland saline shrimp ponds face significant challenges, particularly high seepage problems and potassium nutrient deficiencies, due to the poor soil texture. This leads to the requirement of frequently adding potassium-enriched water to culture ponds. Frequent supplementation of potassium-rich water is often necessary in culture ponds. To investigate a sustainable alternative, a 75-day experiment was conducted to assess the effects of paddy straw biochar (PSB) on both water and sediment quality, as well as the growth performance of Litopenaeus vannamei, with a particular focus on sediment seepage and potassium enrichment. PSB was applied to nursery ponds at two rates: 20 kg per 200 m2 (equivalent to 1 ton/ha) for treatment T1 and 40 kg per 200 m2 (2 tons/ha) for treatment T2. The results indicated a statistically significant (p < 0.05) improvement in key water quality parameters and sediment properties. The overall enhancement in these parameters followed the order: T2 > T1 > Control (C). Similarly, the treatment ponds T1 and T2, amended with paddy straw biochar, showed a significant reduction in seepage rates, 2.81% and 6.79%, respectively, compared to the control ponds without biochar. This resulted in water savings of 18,310 L and 44,220 L, respectively, for a 200 m2 pond during the 75-day culture period. Furthermore, using PSB reduced the amount of K (potassium) required for the T1 and T2 treatment ponds by 11.58% and 18.47%, respectively, each with an area of 200 m2. Our results indicate that paddy straw biochar provides a cost-effective and sustainable approach to enhancing seepage reduction and productivity in inland saline shrimp ponds.

Graphical Abstract